JPH0469840B2 - - Google Patents

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. 8, 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. 9 and 10, 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 flat metal fitting 64 is inserted into the window hole 65.
6 is inserted, and a hooking portion 67 protruding from one side of the one end is hooked onto the flat plate portion 64.
6 and the other flat plate part 7 of the L-shaped fitting 63 with the screw 69 inserted into the other elongated hole 68 of the printed circuit board 61.
0, the terminal pin 71 located between the flat plate portion 70 and the printed circuit board 61 is connected to the printed circuit board 61. Figures 11 and 12
The figure shows a 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 connector 82, and the printed circuit board 81 is fitted onto the terminal pin 83 with a bifurcated contact fitting 84 attached to the back side. It is attached to the equipment case 85 from the beginning.

[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. 9 and FIG. 10 is from the terminal pin 71 to the printed circuit board 61.
To remove it, loosen the screw 69, then remove the flat metal fitting 6.
6 and the L-shaped fitting 63 using the long holes 62 and 68.
Since the shaped metal fitting 63 was moved until it came off the terminal pin 71, and the printed circuit board 61 was connected to the terminal pin 71 in the reverse order, in addition to screw operation, the printed circuit board was attached to and removed from the terminal pin 71. A troublesome operation of inserting and removing the L-shaped fitting 63 and the flat fitting 66 into and out of the fitting 71 is required. 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. 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 was developed in view of the above points, and it is possible to easily replace the printed circuit board connected to the connector of the equipment case, and also to provide reliable connection that allows the connector and the printed circuit board to be reliably connected 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 provided at one end of the housing 1, and a recess 4 whose side wall surface at the other end is an arcuate surface 4a is formed in 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 insertion is formed in the insertion/removal direction of the printed circuit board 13,
A notch hole 17 is formed in the recess 4 in the printed circuit board insertion/removal direction to allow the terminal pin 12 to be inserted and removed freely.
The arcuate surface 23 of the terminal connection piece 16 is brought into contact with the arcuate surface 4a of the recess 4 by interposing the terminal connection piece 16 and the presser piece 15, and the terminal contact piece is attached to the printed circuit board 13 to which the housing is attached. 16, and the circular arc surface 4a of the recess 4 is connected to the terminal pin 12 located between the bifurcated portions 22 of the terminal connecting piece 16 by pressing the presser piece 15 by the screw mechanism 6.
It is formed so that it can be clamped.

[Effect]

When the screw mechanism 6 does not press the presser piece 15,
The terminal connection piece 16 is in contact with both ends of the arcuate surface 4a of the recess 4, and 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 holding piece 15 by the screw mechanism 6, the arcuate surfaces 23, 23 at the tips of the bifurcated portions of the terminal connecting piece 16 align with the arcuate surface 4a of the recess 4.
As a result, the bifurcated portion 22 is displaced in a direction that narrows 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 a high contact pressure, and is connected to the printed circuit board 13 via this terminal connecting piece 16, so that the power supply capacity to the printed circuit board 13 becomes large.
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 held in place. Undress.
As a result, the printed circuit board 13 on which the device of the present invention is attached is removed from the equipment case through the slit 14 and notch hole 1.
7 in the axial direction. Further, the printed circuit board 13 taken out can be attached to a device case by fitting the slit 14 and notch hole 17 into the terminal pin 12 of the plug.

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. In addition, it is possible to connect with high contact pressure, and the presser piece 15
When the pressure is released, the printed circuit board 13 is disconnected from the equipment case and 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 made of an electrically insulating material such as a synthetic resin material and is composed of two halves of the same shape and size, and 2 is a shield case that houses the housing 1. be. 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 1b form a rectangular recess 4 with only the lower side wall surface having an arcuate surface 4a from approximately the center to the lower part of the mating surface 3, and between the recess 4 and the upper surface 5. is a long groove 8 with a semicircular cross section into which a recess 41 into which the screw hole 40 of the shield case 2 is fitted and one half of the shaft of the set screw 7 of the screw mechanism 6 are fitted.
A square hole 10 into which half of the hexagonal nut 9 of the screw mechanism 6 is fitted is formed in the middle thereof, at a location opposite to the notch hole 17 described later in the housing portion 1b, 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 into which the terminal pin 12, which is the center contact of the plug attached to the side wall of the equipment case, is removably inserted. 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 16
A notch hole 17 is formed in the insertion/removal direction of the printed circuit board 13 to allow the terminal pin 12 to be inserted and removed freely between the front middle and the lower end of both side pieces 19a and 19b of the U-shaped piece 18, respectively. Arcuate surfaces 23, 23 are 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 portion 24. This terminal connection piece 16 is connected to the screw mechanism 6
When the presser piece 15 is not pressed down by the presser, it is supported by the upper end of the arcuate surface 4a of the recess 4 and is located at the upper limit.

The housing 1 consists of housing parts 1a and 1b, with a recess 4 in one housing part 1a or 1b.
The holding piece 15 and the terminal connecting piece 16 are attached to their circular arc surface 23.
is fitted so that it is located on the circular arc surface 4a, and a hexagonal nut 9 is fitted into the square hole 10, and the other housing 1b or 1a is fitted. 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 after the screw hole 40 is screwed into the hexagonal nut 9, the end of the set screw 7 is secured to the holding piece 15.
comes into contact with. The reason why the screw hole portion 40 is provided is to prevent the set screw 7 from coming out of the shield case 2 even if it comes off from the hexagonal nut 9. The device of the present invention assembled in this way is inserted into the rectangular hole 28 of the printed circuit board 13 and the shield case 2 is inserted into the shield case 28.
When the printed circuit board 13 is fitted into the printed circuit board 13 with a pair of fitting parts 29, 29 formed at the middle of both outer surfaces of the housing part 1a and the shield case 2,
The protrusion 2 of the terminal connection piece 16 protruding from the hole 37 of
5 is connected to the printed circuit board 13 via the conductor 26, and then the bottom part 30 of the shield case 2 is attached to the metal bottom plate 31, and the top part 32 is attached to the metal cover 33 with screws 38 and 39, 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. Also, in this state, the slit 14 of the housing 1 is in direct communication with the notch hole 43 of the shield case 2 and the notch hole 44 of the metal bottom plate 31, so the printed circuit board 13 is inserted into the metal bottom plate 31 as shown in FIG. CATV transmission equipment case 4
5, the terminal pin 12 of the device case 45 loosely fits into the notch hole 17 of the terminal connection piece 16 through the notch holes 44, 43, 14, and the terminal pin 12 of the device case 45 is inserted into the notch hole 17 of the terminal connection piece 16 through the notch holes 44, 43, 14. 17 predetermined positions. When the terminal pin 12 is positioned in the predetermined position of the notch hole 17 and the presser piece 15 is pushed in using the screw mechanism 6,
Arc surface 23 at the tip of bifurcated portion 22 of terminal connection piece 16,
23 is guided down by the arcuate surfaces 4a, 4a of the recess 4, the bifurcated portion 22 is displaced in the direction of sandwiching 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 the 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. It can be taken out from the case in the axial direction of the slit 14 and notch hole 17.

In this embodiment, the terminal connecting piece 16 has two side pieces 19, but it may be one piece or three or more pieces.

〔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 device case, is firmly clamped by the terminal connecting piece by pressing the holding piece using the screw mechanism and connected to the printed circuit board. Therefore, the plug of the device case and the printed circuit board can be reliably connected with high contact pressure, and the reliability of the terminal contact portion can be improved. In addition, the printed circuit board can be inserted 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, making it easy to attach and remove the printed circuit board from the terminal pins. can be done.

[Brief explanation of the drawing]

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
An explanatory diagram of how to attach and remove printed circuit boards of CATV transmission equipment, etc., 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 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 cross-sectional view of another conventional device. This is a perspective view. 1...Housing, 4...Recess, 4a, 23...
...Arc surface, 6...Screw mechanism, 12...Terminal pin,
13...Printed circuit board, 14...Slit, 15
... Pressing piece, 16 ... Terminal connection piece, 17 ... Notch hole, 22 ... Bifurcated part.

Claims (1)

[Claims] 1. 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. A slit for insertion is formed in the direction of insertion and removal of the printed circuit board, and a notch hole is formed in the recess in the direction of insertion and removal of the printed circuit board for the terminal pin to be inserted and removed freely. interposing a terminal connecting piece with a circular arc surface and a holding piece, abutting the circular arc surface of the terminal connecting piece against the circular arc surface of the recess, and connecting the terminal contact piece to a printed circuit board to which a housing is attached; The arcuate surface of the recess is
1. A terminal pin connecting device for a printed circuit board, characterized in that the terminal pin is formed in such a way that the terminal pin located between the two forks of the terminal connecting piece can be clamped by pressing the holding piece using a screw mechanism.