JPH01173580A - Terminal pin connection device for printed board - Google Patents

Abstract

PURPOSE:To increase electric power feeding capacity and improve the reliability of terminal contact portions by forcing in a presser member with a screw mechanism to firmly mount and clasp the terminal pin of a contact plug mounted on an apparatus case by a terminal connection member and to connect the contact plug on a printed board. CONSTITUTION:A printed board 13 is installed on an apparatus case. The terminal pin 12 of contact plug of said apparatus case is positioned between the tip 20 of a terminal connection member 16 through a slit 14 and a guide groove 17, the screw mechanism 6 is then forced in a presser member 15. Then the tip 20 of the terminal connection member 16 is pressed and subjected to an elastic displacement at the guide groove 17 of the presser member 15, and firmly clasps and mounts the terminals pin 12 from both sides. For this reason, said terminal pin 12 is connected to the terminal connection member 16 securely with high contact pressure, and is connected to the printed board 13 through the terminal connection member 16. Thus, electric power feeding capacity to the printed board can be greatly increased and reliability to the terminal connection member increases.

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. 9, a connection 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. In the case shown in FIGS. 10 and 11, one flat plate part 64 of the L-carved metal fitting 63 is protruded from the long hole 62 of the printed circuit board 61, and the groove part of one end of the flat metal fitting 66 is inserted into the window hole 65. By hooking the flat plate part 64 with the stopper part 67 and fastening the other flat plate part 70 of the L carved metal fitting 63 with this flat metal fitting 66 and the screw 69 inserted into another elongated hole 68 of the printed circuit board 61, the flat plate part 70 and the printed circuit board 61) M board 6
Connected to 1. In the case shown in FIGS. 12 and 13, the mounting position of the printed circuit board 81 of the equipment case 85 is at the plug 8.
In this case, the printed circuit board 81 is attached to the terminal pin 83 with a bifurcated contact fitting 84 attached to the back surface of the printed circuit board 81, and then attached to the device case 85.

[Problem that the invention seeks to solve]

However, in the case shown in FIG. 9, 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 messenger wire 59 as shown in Figure 4, and CATV transmission equipment is connected to each other by a signal transmission cable 60, so if an abnormality occurs in the equipment, the equipment can be replaced. Since it is difficult to replace the printed circuit board, the soldering of each terminal pin 54 and the printed circuit board 55 requires removal at a high place with poor footing, which is an inconvenient and troublesome work. was there. What is shown in FIGS. 10 and 11 is the terminal pin 7.
To remove the printed circuit board 61 from the terminal pin 71, loosen the screw 69, then move the flat metal fitting 66 and the L carved metal fitting 63 using the long holes 62 and 68 until the L carved metal fitting 63 is removed from the terminal pin 71. In addition, since the printed circuit board 61 was connected to the terminal pin 71 in the reverse order, the printed circuit board can be attached to the terminal pin 71 by removing the screws, as well as using the L carved metal fitting 63 and the flat metal fitting 66 for the terminal pin 71. The troublesome operation of putting in and taking out is required. 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. 12 and 13, the bifurcated contact fittings 84 of the printed circuit board 81 are simply fitted onto the terminal pins 83, so misalignment between the bifurcated contact fittings 84 and the terminal pins 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 has reliability that allows the printed circuit board to be easily attached to and removed from the equipment case and the connector, and also allows the connector and the printed circuit board to be reliably connected with high contact pressure. The purpose of the present invention is to provide a terminal pin connection device for a printed circuit board with high performance.

[Means for solving problems]

The structure of the present invention for achieving this purpose is shown in FIGS. 1 to 6.
This will be explained using figures.

The screw mechanism 6 is attached to one end side of the housing 1 by forming a slit 14 between the middle of the recess 4 formed in the middle part and reaching the other end, and attaching the tip of the screw shaft 7 of the screw mechanism 6 to the recess 4. The holding piece 15 is slidably inserted and the bifurcated piece 19 of the terminal connecting piece 16 supported by the housing 1 is positioned in the guide groove 17 formed in the holding piece 15, and the terminal connecting piece 16 is attached to the housing l. The slit 14 and the guide groove 17 are formed so that they can be inserted into and removed from the terminal pin 12 of the connector attached to the device case in the direction of insertion and removal of the printed circuit board. The groove 17 allows the terminal pin 1 to be positioned at a predetermined position in the recess 4 by pushing the presser piece 15 by the screw mechanism 6.
2 is formed so that it can be clamped between the circular arc surface portions 20° 20 formed on the tip surfaces of the bifurcated pieces of the terminal connecting piece 16.

[For production]

The printed circuit board 13 equipped with the device of the present invention is mounted on the equipment case, and the terminal pin 12 of the connector of the equipment case is inserted into the slit 1.
4. The tip end 20 of the terminal connecting piece 16 passes through the guide groove 17.
1, 2, and 8, when the holding piece 15 is pushed in by the screw mechanism 6, the tip portion 20.20 of the terminal connecting piece 16 is placed between the holding piece 150 and the guide groove 17.
The terminal pin 12 is pushed and elastically displaced, and the terminal pin 12 is clamped more firmly than both sides. Thereby, the terminal pin 12 is reliably connected to the terminal connecting piece 16 with high contact pressure, and is connected to the printed circuit board 13 via this terminal connecting piece 16. Therefore, the power supply capacity to the printed circuit board 13 can be increased, and
The reliability of the terminal contact portion can be improved.

When the holding piece 15 is pulled back by the screw mechanism 6, the bifurcated piece 19 spreads to both sides due to the restoring force, releasing the clamping of the terminal pin 12. Slit 1 can be opened by removing the case connection screw.
4. It can be easily taken out from the device case using the guide groove 17.

In this way, the printed circuit board 13 equipped with the device of the present invention is attached to and detached from the terminal pins by screw operation using the screw mechanism 6.
Since the printed circuit board 13 is inserted and removed in the axial direction of the slit for attachment to and removal from the device case, the printed circuit board 13 can be easily attached to and removed from the device case and the plug.

〔Example〕

Embodiments of the present invention will be described based on the drawings. In FIGS. 1 to 6, reference numeral 1 denotes a housing made of an electrically insulating material such as a synthetic resin material, and in this embodiment, it is a two-split housing portion 1a having the same shape and size.

1b. 2 is a shield case that accommodates the housing 1. This shield case 2 prevents external interference electromagnetic waves and interference potential, and also has a high frequency shield function.
The ground potential (reference potential) is the same potential as the equipment case.

As shown in FIG. 6, the housing parts 1a, lb form a rectangular recess 4.4 from approximately the center to the lower part of the mating surface 3, and a screw mechanism is provided between the recess 4, 4 and the upper surface 5, 5. A long groove 8, 8 with a semicircular cross section into which one half of the shaft portion of the screw shaft 7 of No. 6 is fitted.
A square hole 10, 10 is formed in the middle thereof into which a half of the hexagonal nut 9 of the screw mechanism 6 is fitted, and a printed circuit board 1 is formed between the center of the recess of the housing parts 1a, lb to the lower end surface 11.
3. A slit 14 is provided which is formed in the insertion/removal direction and allows the terminal pin 12, which is the center contact of the plug attached to the side wall of the device case, to be inserted into and removed from the terminal pin 12. In the recess 4, a presser piece 15 made of an electrically insulating material such as a synthetic resin material is attached to the tip of the screw shaft 7 of the screw mechanism 6. In this embodiment, a presser piece 15 consisting of two halves of presser pieces 15a and 15b of the same shape and size is provided. Insert. A tip portion including a flange portion 22 protruding from the tip of the screw shaft 7 is fitted onto the mating surfaces of the holding pieces 15a and 15b.
A guide groove 17.17 is formed which has a groove 23.23 and communicates with the slit 14 from the intermediate center to the lower end, and in which the bifurcated piece 19 of the terminal connection piece 16, which is a conductor, is positioned. The terminal connection piece 16 consists of a bifurcated piece 19 and a support shaft 18 fixed to its base, and this support shaft 18 is connected to the housing part 1a.
, lb hole 30.30. The bifurcated piece 19 has a C-shape and has a circular arc surface portion 2 along the outer peripheral surface of the terminal pin 12 at the tip.
0 is formed. The guide groove 17 of the presser piece 15 has a circular arc surface 20.20 formed at the tip of the guide groove 17 when the presser piece 15 comes into contact with the upper end surface 41 of the recess 4, as shown in FIG. 21 and separates from the terminal pin 12, the presser piece 15 is pushed in, and the slope 21.21 becomes the arcuate surface part 2.
When it passes through 0.20, the terminal pin 12 is formed to snap onto the arcuate surface portion 20.20.

The housing part 1a or 1b has a holding piece 15 with the tip of the screw shaft 7 fitted in the T groove 23, 23 in the recess 4, and a hexagonal nut 9 and the screw shaft 7 screwed thereon in the square hole 10 and the long hole. Fit the holding piece 15 into the hole 8 and then use the screw mechanism 6 to attach the holding piece 15 to the upper end surface 4 of the recess 4.
1, the bifurcated piece 19 of the terminal connecting piece 16 is inserted into the guide groove 17 of the holding piece 15, and one of the supporting shafts 18 is inserted into the hole 30 of the nozzing 1a or 1b.

Next, attach the other housing 1b or 1a to the screw shaft 7, hexagonal nut 9,
The presser piece 15 is inserted into the support shaft 18 of the terminal connection piece 16, and the housings la and 1b are fitted together. The housing 1 fitted in this manner is fitted into the shield case 2, and is internally fixed to the shield case 2 by bending a plurality of projecting pieces 27 provided on the edge of the shield case 2 on the nozzle insertion side.

The thus assembled device of the present invention 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 in the middle of both outer surfaces of the shield case 2. A terminal connection piece 6 protruding from the hole 30 of the housing part 1a and the hole 3 of the shield case 2
The supporting shaft I8 of the shield case 2 is soldered to the printed circuit board 13 via the conductor 26, and then the bottom part 24 of the shield case 2 is attached to the metal bottom plate 32, and the top part 25 is attached to the metal cover 33 with screws 3.
4. Install in 35. 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 1 and the presser piece 1
Since the guide groove 17 of No. 5 communicates straight with the notch hole 36 of the bottom part 24 of the shield case 2 and the notch hole 37 of the metal bottom plate 32, the printed circuit board 13 is connected to the metal bottom plate 32 as shown in FIG. The equipment case 3 is attached to the support tube 39, 39 protruding inside the CATV transmission equipment case 38.
The terminal pin 2 of the plug attached to 8 is connected to the notch hole 37, 3
6. The tip end 20 of the terminal connecting piece 16 through the slit 14.
It will be located between 20 and 20.

In FIG. 8, when the holding piece 15 is pushed downward from the illustrated state by the screw mechanism 6, the arcuate surface portion 20.20 at the tip of the terminal connecting piece 16 is pushed by the holding piece 15 and clamps the terminal pin 12 from both sides. Therefore, the terminal pin 12 of the plug attached to the equipment case is connected to the printed circuit board 13 via the terminal connection piece 16.
connected to. Next, when the holding piece 15 is pulled up using the screw mechanism 6, the terminal connecting piece 16 is separated from the terminal pin 12, so that
The printed circuit board 13 can be taken out from the equipment case 38 immediately after being disconnected from the equipment case 38.

Although the terminal connection piece 16 in this embodiment has a support shaft 18 fixed to the base of the bifurcated portion 19, as shown in FIG.
A metal piece 40 with arcuate surface portions 20 formed at its tips on both sides of the metal piece 40.
40 may be fixed in any suitable configuration.

〔Effect 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 plug attached to the equipment case, is firmly clamped by the tip of the bifurcated piece of the terminal connecting piece by pressing the holding piece using the screw mechanism. Since the connector is connected to the printed circuit board using a holder, the connector of the equipment case and the printed circuit board are reliably connected with high contact pressure. Therefore, the power supply capacity can be increased, and the reliability of the terminal contact portion can be improved. In addition, when installing and removing a printed circuit board from the equipment case, the printed circuit board is moved in and out in the slit axis direction, and the printed circuit board and terminal pins are attached and removed by screw operation of the screw mechanism, so it is difficult to attach or remove the printed circuit board from the equipment case or connector. Printed circuit boards can be easily installed and removed.

[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 printed circuit boards of CATV transmission equipment, FIG. 6 is an explanatory diagram of how to assemble an embodiment of the present invention, FIG. 7 is a perspective view of another embodiment of the terminal connection piece, and FIG. 8 9 is a partially cutaway vertical sectional view of a conventional device, FIG. 10 is a perspective view of another conventional device, FIG. 11 is a sectional view of the same, and FIG. FIG. 12 is a sectional view of another conventional device, and FIG. 13 is a view taken along arrow A in the same. l...housing, 4...recess, 4a, 23...arc surface, 6...screw mechanism, 12...terminal pin, 13...printed circuit board, 14...slit, 15...presser piece, 16...
Terminal connection piece, 17...notch hole, 22...bifurcated part.

Claims (1)

[Claims] (1) A screw mechanism is attached to one end of the housing, and a slit is formed between the middle of the recess formed in the middle part to the other end, and the presser piece attached to the tip of the screw shaft of the screw mechanism is slid into the recess. At the same time, the bifurcated piece of the terminal connecting piece supported by the housing is positioned in the guide groove formed in the holding piece, and the terminal connecting piece is connected to the printed circuit board on which the housing is attached, and the slit and the guide The groove is formed so that it can be inserted into and removed from the terminal pin of the plug attached to the equipment case in the printed circuit board insertion/removal direction, and the guide groove is formed in the recess by pressing the holding piece using the screw mechanism. 1. A terminal pin connecting device for a printed circuit board, characterized in that a terminal pin located at a predetermined position is formed so that it can be clamped by the tip of a bifurcated piece of a terminal connecting piece. (2) The terminal pin connecting device for a printed circuit board according to claim 1, wherein the tip of the terminal connecting piece is a circular arc surface along the outer peripheral surface of the terminal pin.