JPH01129496A - Connector for terminal pin of printed board - Google Patents

Abstract

PURPOSE:To connect a contact plug for an apparatus case and a printed board positively, and to dismantle the printed board easily by firmly holding a terminal pin, a central contact of the contact plug mounted to the apparatus case by the push-in of a hold-down piece by a screw mechanism, by means of a terminal connecting piece and connecting the terminal pin to the printed board. CONSTITUTION:When a terminal connecting piece 16 is pushed in through a hold-down piece 15 by a screw mechanism 6, a notch hole 17 is narrowed in forked sections 22 and a terminal pin 12 is held strongly from both sides because circular surfaces 23, 23 at the noses of the forked sections are guided by the circular surfaces 4a of a recessed section 4 and fall. When pushing is released, the holding of the terminal pin 12 is released by the restoring force of the forked sections 22. Consequently, a printed board 13 to which a device is installed can be extracted in the axial direction of a slit 14 and the notch hole 17 from an apparatus case 45. The slit 14 and the notch hole 17 are fitted to the terminal pin 12 in a contact plug, and the terminal 12 can be mounted to the apparatus case.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides a built-in printed circuit board of an electronic device, such as a CATV transmission device, with a terminal pin, which is the center contact of a plug attached to a device case that houses the printed circuit board. The present invention relates to a terminal pin connection device for pressure contact connection.

[Conventional technology]

For example, as shown in FIG. 8, a method for connecting a relay connector of CATV transmission equipment to a printed circuit board is to connect a terminal pin 54, which is the center contact of a connector 53 attached to a side wall 52 of an equipment case 51, to a terminal pin 54 inside the equipment case. Arranged printed circuit board 5
5 are connected to each other by soldering 57 and 58 via a common conductor 56. What is shown in Figures 9 and 10 is
One flat plate part 64 of the L carved metal fitting 63 is protruded from the elongated hole 62 of the printed circuit board 61, and one end of the flat metal fitting 66 is inserted into the window hole 65 to form a latching part 67 protruding from one side of the one end. Hooked on the flat plate part 64, this flat metal fitting 66 and the printed circuit board 6
The terminal pin 71 located between the flat plate part 70 and the printed circuit board 61 is tightened by tightening the other flat plate part 7O of the L carving tool 63 with the screw 69 inserted into the other long hole 68 of 1.
is connected to the printed circuit board 61. Figure 11 and 1
What is shown in Figure 2 is the printed circuit board 81 of the equipment case 85.
In the case where the mounting position is in front of the terminal pin 83 of the plug 82, the printed circuit board 81 is fitted to the terminal pin 83 using a bifurcated contact fitting 84 attached to the back surface of the printed circuit board 81, and then mounted to the equipment case 85.

[Problem that the invention seeks to solve]

However, in the case shown in FIG. 8, the terminal pins 54 of each connector 53 are soldered to the printed circuit board 55, which makes the work of replacing the printed circuit board 55 complicated. For example, CATV transmission equipment is attached to a telephone pole or a mesosenger wire 59 as shown in Figure 4, and the CATV transmission equipment is connected to each other by a signal transmission cable 60, so if an abnormality occurs in the equipment, the Since it is difficult to replace the printed circuit board, the printed circuit board is replaced, and at that time, the soldering of each terminal pin 54 and the printed circuit board 55 requires removal at a high place with poor footing, which is inefficient and complicated work. There was an inconvenience. What is shown in FIGS. 9 and 10 is the terminal pin 71.
To remove the printed circuit board 61 from the
Next, the flat metal fitting 66 and the L carved metal fitting 63 are moved using the long holes 62.68 until the L carved metal fitting 63 is removed from the terminal pin 71, and the printed circuit board 61 is moved to the terminal pin 71 in the reverse order. Since the printed circuit board was connected to the terminal pin 71, the printed circuit board must be removed by screw operation.
This requires a troublesome operation of inserting and removing the L carved metal fitting 63 and the flat metal fitting 66 into and out of the case. Furthermore, since a gap is created between the elongated hole 62 and the flat plate part 64, the L carved metal fitting 63 is tilted when the screw 69 is tightened, and the terminal pin 71 is forced to escape to the side, making it impossible to obtain high contact pressure. . In the case shown in FIGS. 11 and 12, the two-pronged contact fitting 84 of the printed circuit board 81 is simply fitted onto the terminal pin 83, so a misalignment between the two-pronged contact fitting 84 and the terminal pin 83 may cause poor contact. Even if contact could be made without any deviation, the power supply capacity would be extremely small because the contact would be a line contact due to the elasticity of the bifurcated contact fittings 84.

The present invention has been made in view of the above-mentioned points, and it is possible to easily replace the printed circuit board connected to the connector of the equipment case, and to provide reliable connection that allows the connector and the printed circuit board to be reliably connected with high contact pressure. [Means for solving the problem] The structure of the present invention for achieving this purpose is shown in Figs. 1 to 6.
This will be explained using figures.

A screw mechanism 6 is provided at one end of the housing l, and a four part 4 whose side wall surface at the other end is an arcuate surface 4a is formed at the middle part, and the other end is inserted into a terminal pin 12 of a plug attached to an equipment case. A slit 14 for removably inserting the printed circuit board 13
A notch hole 17 is formed in the recess 4 in the insertion/removal direction of the printed circuit board, and a notch hole 17 is formed in the recess 4 in the insertion/removal direction of the printed circuit board. 2
3, the terminal connecting piece 16 and the holding piece 15 are interposed to bring the arcuate surface 23 of the terminal connecting piece 16 into contact with the arcuate surface 4a of the recess 4, and the printed circuit board 1 with the housing attached thereto.
3, the terminal contact piece 16 is connected to the arcuate surface 4a of the recess 4.
is formed so that when the presser piece 15 is pushed in by the screw mechanism 6, the terminal pin 12 located between the bifurcated portions 22 of the terminal connecting piece 16 can be clamped.

[For production]

When the holding piece 15 is not pressed by the screw mechanism 6, the terminal connecting piece 16 is in contact with both ends of the arcuate surface 4a of the recess 4,
The terminal pin 12 is loosely fitted into the notch hole 17 of the terminal connection piece 16.

Now, when the terminal connecting piece 16 is pushed through the presser piece 15 by the screw mechanism 6, the terminal connecting piece 16 is pushed into the arcuate surface 23 at the tip of the bifurcated part. ．． 23 is guided down by the arcuate surface 4a of the recess 4, the bifurcated portion 22 is displaced in the direction of narrowing the notch hole 17 as shown by the imaginary line in FIG. As a result, the terminal pin 12 is connected to the terminal connecting piece 16 with high contact pressure, and the terminal connecting piece 16 is now connected to the printed circuit board 13, increasing the power supply capacity to the printed circuit board 13. Moreover, the reliability of the terminal contact portion can be improved.

When the pressure on the holding piece 15 by the screw mechanism 6 is released, the terminal connecting piece 16 pushes the holding piece 15 toward the screw mechanism 6 side by the restoring force of the bifurcated portion 22 and returns to its original position, and the terminal pin 12 is clamped. Solve.

Thereby, the printed circuit board 13 to which the device of the present invention is attached can be taken out from the device case in the axial direction of the slit 14 and the cutout hole 17. In addition, the slit 14 and notch hole 17 of the printed circuit board 13 taken out are inserted into the terminal pin 1 of the plug.
2 and can be attached to the equipment case.

In this way, by mounting the printed circuit board 13 on which the device of the present invention is attached to the equipment case and pressing the holding piece 15 using the screw mechanism 6, the terminal pin 12 of the connector on the equipment case and the printed circuit board 13 can be securely connected. Moreover, the connection can be made with high contact pressure, and when the press of the holding piece 15 is released, the printed circuit board 13 is disconnected from the equipment case, so that it can be immediately removed from the equipment case.

〔Example〕

Embodiments of the present invention will be described based on the drawings. In FIGS. 1 to 6, 1 is a housing part 1a formed of an electrically insulating material such as a synthetic resin material and having the same shape and size;
A housing 2 is a shield case that houses the housing 1. This shield case 2 prevents external interference electromagnetic waves and interference potential, has a high frequency shielding function, and has a ground potential (reference potential) that is the same potential as the device case.

As shown in FIG. 6, the housing parts 1a and lb have an arcuate surface 4a only on the lower side wall surface from approximately the center to the lower part of the mating surface 3.
A rectangular recess 4 is formed, and a recess 4 into which the screw hole 40 of the shield case 2 is fitted is formed between the recess 4 and the upper surface 5.
1 and a long groove 8 with a semicircular cross section into which one half of the shaft portion of the set screw 7 of the screw mechanism 6 is fitted, and a square hole 10 into which half of the hexagonal nut 9 of the screw mechanism 6 is fitted in the middle thereof. A terminal pin 12, which is the center contact of a plug attached to the side wall of the equipment case, is located at a location opposite to the notch hole 17 described later and at a location from this opposing location to the lower end surface 11 of the housing portion 1b.
A slit 14 is formed in the insertion/removal direction of the printed circuit board 13 for inserting and removing it freely. A presser piece 15 that is an electrically insulating material and a terminal connection piece 16 that is a conductor that positions the base 24 on the lower surface side of the presser piece are inserted into the recess 4 . Terminal connection piece 1
6, a notch hole 17 is formed in the direction of inserting and removing the printed circuit board 13, into which the terminal pin 12 is inserted and removed, between the front middle and the lower end of both side pieces 19a and 19b of the U-shaped piece 18, respectively. A circular arc surface 23.23 is formed at the lower end of the bifurcated portion 22, and a protrusion 25 is provided protruding from the center of the tip of the extended portion of the base 24. When the holding piece 15 is not pressed down by the screw mechanism 6, the terminal connecting piece 16 is supported by the upper end of the arcuate surface 4a of the recess 4 and is positioned at the upper limit. Fit the presser piece 15 and the terminal connection piece 16 into the recess 4 of the housing part 1a or 1b so that the arcuate surface 23 thereof is positioned on the arcuate surface 4a, fit the hexagonal nut 9 into the square hole 10, and then attach the other housing 1b or 1b. Fit 1a. When the housing 1 assembled in this way is fitted into the shield case 2 and the housing 1 is internally fixed to the shield case 2 by bending the protrusions 27 provided on the housing insertion side edge of the shield case 2, the setscrew 7 is screwed into the screw hole 40 of the shield case 2, and once the screw hole 40 is screwed into the hexagonal nut 9, the end of the set screw 7 is held down by a piece. 15. The reason why the threaded hole portion 40 is provided is to prevent the set screw 7 from coming out from the shield case 2 even if it comes off the hexagonal nut 9. The device of the present invention assembled in this manner is inserted into the rectangular hole 28 of the printed circuit board 13 and fitted into the printed circuit board 13 using a pair of fitting portions 29 and 29 formed at the middle of both outer surfaces of the shield case 2. , the protrusion 25 of the terminal connection piece 16 protruding from the hole 36 of the housing part 1a and the hole 27 of the shield case 2 is connected to the printed circuit board 13 via the conductor 26, and then the bottom part 30 of the shield case 2 is Attach screws 3 to the metal bottom plate 31 and the top part 32 to the metal cover 33, respectively.
8. Install in 39. With such an assembly configuration, it is possible to eliminate external interfering electromagnetic waves and interfering noise potential, and it is also possible to maintain matching as a high frequency signal line. or,
In this state, the slit 14 of the housing l communicates directly with the notch hole 43 of the shield case 2 and the notch hole 44 of the metal bottom plate 31, so that the printed circuit board 13 can be connected to the CATV with the metal bottom plate 31 as shown in FIG. When attached to the support tube 46, 46 protruding inside the transmission equipment case 45,
The terminal pin 12 of the device case 45 is inserted into the notch hole 44.43.1
4, it can be loosely fitted into the notch hole 17 of the terminal connection piece 16 and positioned at a predetermined position in the notch hole 17. When the holding piece 15 is pushed in by the screw mechanism 6 with the terminal pin 12 positioned at a predetermined position in the notch hole 17, the arcuate surface 23.23 at the tip of the bifurcated part 22 of the terminal connecting piece 16
is guided by the arcuate surfaces 4a, 4a of the concave portion 4 and descends, so the bifurcated portion 22 is displaced in the direction of pinching the notch hole 17, pinching the terminal pin 12 from both sides, and connecting the plug attached to the equipment case. The terminal pins 12 and the printed circuit board 13 are connected.

When the pressure on the holding piece 15 is released, the terminal connecting piece 16 returns to its original position due to restoring force, and the terminal pin 12 is unclamped, so that the printed circuit board 12 disconnected from the terminal pin 12 is connected to the device. Slit 14 and notch hole 1 from the case
7 in the axial direction.

In this embodiment, the terminal connecting piece 16 has two side pieces 19, but it may be one piece or three or more pieces. [Effects of the Invention] As is clear from the above description, according to the present invention, The terminal pin, which is the center contact of the connector attached to the equipment case, is firmly clamped by the terminal connecting piece and connected to the printed circuit board by pushing the retainer piece into the equipment case using a screw mechanism. and the printed circuit board can be reliably connected with high contact pressure, and the multiplicity of the terminal contact portion can be increased. In addition, the printed circuit board can be inserted into and removed from the equipment case by releasing the pressure on the holding piece and moving the printed circuit board in and out of the cutout hole in the axial direction without damaging the terminal pins. It's easy to do.

[Brief explanation of the drawing]

Fig. 1 is a front longitudinal sectional view of an embodiment of the present invention, Fig. 2 is a side longitudinal sectional view of the same, Fig. 3 is a front view of the same, Fig. 4 is a perspective view of the CATV transmission equipment in use, and Fig. 5 is FIG. 6 is an explanatory diagram of how to install and remove the M board etc. of CATV transmission equipment, FIG. 6 is an explanatory diagram of the assembly method of the embodiment of the present invention, FIG. 7 is an explanatory diagram of the operation of the holding piece and the terminal connecting piece with respect to the terminal pin, Fig. 8 is a partially cutaway vertical sectional view of a conventional device, Fig. 9 is a perspective view of another conventional device, Fig. 10 is a sectional view of the same, Fig. 11 is a sectional view of another conventional device, and Fig. 12 is a sectional view of another conventional device. It is a view in the direction of arrow A. ■... Housing, 4... Recess, 4a, 23... Arc surface, 6... Screw mechanism, 12... Terminal pin, 13... Print base material, 14... Slit, 15... Holding piece, 16
...Terminal connection piece, 17..Notch hole, 22..bifurcated part. Figure 5

Claims (1)

[Claims] A screw mechanism is provided at one end of the housing, and a recess is formed in the middle part of the housing, the side wall surface of which is an arcuate surface, and the other end is removably inserted into the terminal pin of a plug attached to the equipment case. A slit is formed in the printed circuit board insertion/removal direction for the purpose of insertion and removal, and a notch hole is formed in the recessed portion in the printed circuit board insertion/removal direction for the terminal pin to be inserted and removed freely. A terminal connecting piece having an arcuate surface and a holding piece are interposed, the arcuate surface of the terminal connecting piece is brought into contact with the circular arc surface of the recess, and the terminal contacting piece is connected to the printed circuit board on which the housing is attached. A terminal pin connecting device for a printed circuit board, characterized in that the arcuate surface of the recess is formed so that the terminal pin located between the bifurcated portions of the terminal connecting piece can be clamped by pressing the holding piece using a screw mechanism. .