JPH0424834B2 - - 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 for electronic equipment, such as CATV transmission equipment, with a terminal pin that 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 a CATV transmission device to a printed circuit board is as follows. A common conductor 5 is connected to the installed printed circuit board 55.
6 and are connected by soldering 57 and 58. In the case shown in FIGS. 10 and 11, one flat plate part 64 of an L-shaped metal fitting 63 is protruded from a long hole 62 of a 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-shaped 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 A terminal pin 71 located between 70 and the printed circuit board 61 is connected to the printed circuit board 61. What is shown in Figures 12 and 13 is
In the case where the mounting position of the printed circuit board 81 on the equipment case 85 is in front of the terminal pin 83 of the plug 82, the printed circuit board 81 is fitted onto the terminal pin 83 using the bifurcated contact fitting 84 attached to the back surface of the printed circuit board 81, and then the printed circuit board 81 is attached to the equipment case 85. It is installed.

[Problem that the invention seeks to solve]

However, what is shown in FIG.
Since the terminal pins 54 of each plug 53 are soldered to the connector 5, replacing the printed circuit board 55 becomes complicated. For example, CATV transmission equipment is installed on utility poles or
It is attached to the messenger wire 59 as shown in the figure, and the CATV transmission equipment is connected to each other by the signal transmission cable 60. Therefore, if an abnormality occurs in the equipment, it is difficult to replace the equipment, so the printed circuit board must be replaced. At that time, each terminal pin 54 and the printed circuit board 55 must be attached and detached by soldering at a high place with poor footing, which is inconvenient and results in inefficient and complicated work. What is shown in FIG. 10 and FIG. 11 is from the terminal pin 71 to the printed circuit board 6.
1, loosen the screw 69, then move the flat metal fitting 66 and L-shaped metal fitting 63 using the long holes 62 and 68 until the L-shaped metal fitting 63 comes off from the terminal pin 71, and, Since the printed circuit board 61 was connected to the terminal pin 71 in the reverse order, the terminal pin 71
In addition to screw operations, attaching and detaching the printed circuit board to and from the terminal pins 71 requires the troublesome operation of inserting and removing the L-shaped metal fittings 63 and the flat metal fittings 66 into and out of the terminal pins 71. Furthermore, since a gap is created between the elongated hole 62 and the flat plate part 64, the L-shaped 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 it is possible to easily attach and remove a printed circuit board to and from an equipment case and a plug, and to provide a reliable connection that can reliably connect the plug and the printed circuit board with high contact pressure. The purpose is to provide a terminal pin connection device for expensive printed circuit boards.

[Means for solving problems]

The first configuration of the present invention to achieve this purpose is as follows.
This will be explained using FIGS.

A screw mechanism 6 is attached to one end of the housing 1, and a slit 14 is formed between the middle and the other end of a recess 4 formed in the middle, and a screw mechanism 6 is attached to the tip of the screw shaft 7 of the screw mechanism 6 in the recess 4. The holding piece 15 is slidably inserted into the terminal connecting piece 16, which has a bifurcated piece 19 protruding from the support shaft 18 in a V-shape. The terminal connecting piece 1 is placed in the guide groove 17 formed in the printed circuit board 13 on which the housing 1 is attached.
6, the slit 14 and the guide groove 1
7 is terminal pin 1 of the plug attached to the equipment case
2 so that the printed circuit board can be inserted and removed in the direction of insertion and removal, and the guide groove 17
is formed so that the terminal pin 12 positioned at a predetermined position in the recess 4 by pushing the presser piece 15 by the screw mechanism 6 can be clamped by the tip portions 20, 20 of the bifurcated piece 19 of the terminal connecting piece 16.

[Effect]

The printed circuit board 13 equipped with the device of the present invention is mounted on the equipment case, and the terminal pin 1 of the connector of the equipment case is installed.
2 through the slit 14 and the guide groove 17, and positioned between the tips 20, 20 of the bifurcated piece 19 of the terminal connecting piece 16,
When the presser piece 15 is pushed in by the screw mechanism 6, the tips 20, 20 of the bifurcated piece 19 fit into the guide groove 1 of the presser piece 15.
7 and is elastically displaced, resulting in the terminal pin 12 being 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.

If the presser piece 15 is pulled back using the screw mechanism 6, the bifurcated piece 1
9 expands to both sides due to the restoring force and releases the terminal pin 12 from its grip. As a result, the printed circuit board 13 that has been disconnected from the plug can be easily taken out of the equipment case using the slit 14 and the guide groove 17 by removing the equipment case connecting screw.

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, and the printed circuit board 13 is moved in and out of the slit axis direction for attachment and detachment to and from the device case. The printed circuit board 13 can be easily mounted and removed from the device case and the plug.

〔Example〕

Embodiments of the present invention will be described based on the drawings. 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, two housing parts 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, 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 portions 1a, 1b have rectangular recesses 4, 4 formed from approximately the center to the lower part of the mating surface 3, and a screw mechanism is provided between the recesses 4, 4 and the upper surfaces 5, 5. Long grooves 8, 8 with a semicircular cross section into which one half of the shaft portion of the screw shaft 7 of 6 is fitted, and square holes 10, 1 into which half of the hexagonal nut 9 of the screw mechanism 6 is fitted between them.
0, and a printed circuit board 1 is formed between the center of the recess of the housing parts 1a and 1b and the lower end surface 11.
3. Terminal pin 1, which is the center contact of a plug formed in the insertion/removal direction and attached to the side wall of the equipment case.
A slit 14 is provided for insertion into and removal from 2. In the recess 4, there is a presser piece 15 made of an electrically insulating material such as a synthetic resin material, which is attached to the tip of the screw shaft 7 of the screw mechanism 6, and in this embodiment there is a presser piece 1 that is split into two and has the same shape and size.
A presser piece 15 consisting of 5a and 15b is fitted so as to be vertically slidable. The mating surfaces of the presser pieces 15a and 15b have T-grooves 23 and 23 on the upper part into which the tip end including the flange 22 protruding from the tip of the screw shaft 7 is fitted. Guide grooves 17, 17 are formed that communicate with the terminal 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 the base thereof, and the support shaft 18 is supported in holes 30, 30 of the housing parts 1a, 1b. The bifurcated piece 19 has a square shape, and its distal end forms an arcuate surface portion 20 along the outer peripheral surface of the terminal pin 12 in this embodiment. The guide groove 17 of the presser piece 15 is configured such that 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 2
1 and 21 pass through the arcuate surface portions 20 and 20, the terminal pin 12 is held between the arcuate surface portions 20 and 20.

In the housing part 1a or 1b, a presser piece 15 in which the tip of the screw shaft 7 is inserted into the T grooves 23, 23 is inserted into the recess 4, and a hexagonal nut 9 and the screw shaft 7 screwed therein are inserted into the square hole 10 and the long groove. 8 and then pull back the presser piece 15 using the screw mechanism 6 until it comes into contact with the upper end surface 41 of the recess 4. The bifurcated piece 19 of the terminal connection piece 16 is inserted into the guide groove 17 of the presser piece 15 and the support shaft 18 is inserted. One end is inserted into the hole 30 of the housing 1a or 1b. Next, the other housing 1b or 1a is attached to the screw shafts 7, 6 with its long groove 8, square hole 10, recess 4, and hole 30.
The square nut 9, the holding piece 15, and the support shaft 18 of the terminal connecting piece 16 are fitted into the housings 1a and 1b. 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 housing insertion side edge of the shield case 2.

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, 29 formed in the middle of both outer surfaces of the shield case 2. The support shaft 18 of the terminal connection piece 16 protruding from the hole 30 of the housing part 1a and the hole 31 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 soldered. The upper surface portion 25 is attached to the metal bottom plate 32 and the metal cover 33 with screws 34 and 35, respectively. 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. In addition, in this state, the slit 14 of the housing 1 and the guide groove 1 of the holding piece 15 are
7 is a notch hole 36 in the bottom part 24 of the shield case 2
The printed circuit board 13 is connected to the notch hole 37 of the metal bottom plate 32 in a straight line, so that the printed circuit board 13 can be attached to the support tubes 39, 39 protruding inside the CATV transmission equipment case 38 using the metal bottom plate 32, as shown in FIG. In the attached state, the terminal pin 12 of the plug attached to the equipment case 38 passes through the notch holes 37, 36 and the slit 14, and then connects to the tips 20, 2 of the bifurcated piece 19 of the terminal connecting piece 16.
It will be located between 0.

In FIG. 8, when the holding piece 15 is pushed downward from the illustrated state by the screw mechanism 6, the terminal connecting piece 16
The arc surface portions 20, 20 of the bifurcated piece 19 are the presser piece 15.
The terminal pin 12 of the connector attached to the equipment case is clamped by the terminal pin 12 from both sides.
2 is connected to the printed circuit board 13 via a terminal connection piece 16. Next, when the holding piece 15 is pulled up by 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.

In the terminal connection piece 16 in this embodiment, the support shaft 18 is fixed to the base of the bifurcated piece 19, but as shown in FIG. 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 pushing the holding piece using the screw mechanism. Since the connector is connected to the printed circuit board using a high contact pressure, the connector of the device 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 attaching or removing a printed circuit board to or from an equipment case, the printed circuit board is moved in and out in the axial direction of the slit, and the printed circuit board and terminal pins are attached or removed by screw operation using a screw mechanism. Boards can be easily installed and removed.

[Brief explanation of drawings]

FIG. 1 is a front longitudinal sectional view of an embodiment of the present invention, and FIG.
The figure is a longitudinal sectional view of the same side, Figure 3 is a front view of the same, Figure 4 is a perspective view of the CATV transmission equipment in use, and Figure 5 is a
Figure 6 is an explanatory diagram of how to attach and remove the printed circuit board of CATV transmission equipment, Figure 6 is an illustration of how to assemble the embodiment of the present invention, Figure 7 is a perspective view of another embodiment of the terminal connection piece, and Figure 8 is An explanatory diagram of the operation of the presser piece and the terminal connecting piece with respect to the terminal pin, FIG. 9 is a partially cutaway vertical sectional view of the conventional device, FIG. 10 is a perspective view of another conventional device, FIG. 11 is the same sectional view, and FIG. The figure is a sectional view of another conventional device, and FIG. 13 is a view taken along arrow A in the same figure. 1... Housing, 4... Recess, 6... Screw mechanism, 12... Terminal pin, 13... Printed circuit board,
14... Slit, 15... Holding piece, 16... Terminal connection piece, 17... Guide groove, 18... Support shaft, 19
...Two-pronged piece.

Claims (1)

[Scope of Claims] 1. A screw mechanism is attached to one end of the housing, and a slit is formed between the middle of a recess formed in the middle part to the other end, and a screw mechanism is attached to the tip of the screw shaft of the screw mechanism in the recess. A terminal connecting piece consisting of a two-pronged piece protruding in a C-shape from a supporting shaft is attached to the housing by the supporting shaft, and the two-pronged piece is positioned in the guide groove formed on the holding piece. and connect the terminal connection piece to the printed circuit board with the housing attached, such that the slit and the guide groove can be inserted into and removed from the terminal pin of the connector attached to the equipment case in the direction of insertion and removal of the printed circuit board. In addition, the guide groove is formed so that the terminal pin located at a predetermined position in the recess can be held at the tip of the bifurcated piece of the terminal connecting piece by pushing the holding piece by the screw mechanism. Terminal pin connection device for printed circuit boards. 2. The terminal pin connecting device for a printed circuit board according to claim 1, wherein the tip of the bifurcated piece of the terminal connecting piece is a circular arc surface along the outer peripheral surface of the terminal pin.