JPH0416384Y2 - - 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, which is the center contact of a plug attached to the equipment 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 signal terminal plug of a CATV transmission device is connected to a printed circuit board using a plug 5 attached to a side wall 52 of a device case 51.
A terminal pin 54, which is the center contact of the device 3, is connected to a printed circuit board 55 disposed inside the equipment case via a common conductor 56 by soldering 57, 58. What is shown in Figures 9 and 10 is
One flat plate part 64 of the L-shaped 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 onto the flat plate part 64, this flat metal fitting 66 and another elongated hole 6 of the printed circuit board 61
The terminal pin 71 located between the flat plate part 70 and the printed circuit board 61 is connected to the printed circuit board 61 by tightening the other flat plate part 70 of the L-shaped metal fitting 63 with the screw 69 inserted in the terminal pin 8 . What is shown in FIGS. 11 and 12 is a case where the mounting position of the printed circuit board 81 of the equipment case 85 is in front of the terminal pin 83 of the connector 82, and the printed circuit board 81 is attached to the bifurcated contact fitting 84 attached to the back surface of the printed circuit board 81. After fitting into the terminal pin 83, it is attached to the device case 85.

[Problem that the invention attempts 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 attached to a telephone pole or a messenger 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 the printed circuit board is difficult to replace, the printed circuit board is replaced. At that time, each terminal pin 54 and the printed circuit board 55 must be attached and removed by soldering at a high place with poor footing, which is an inconvenient and complicated work. It was hot. What is shown in FIGS. 9 and 10 is a connection between the terminal pin 71 and 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 Printed circuit board 61 in reverse order
was connected to terminal pin 71, so terminal pin 7
In addition to screw operations, attaching and detaching the printed circuit board to and from the terminal pin 71 requires the troublesome operation of inserting and removing the L-shaped metal fitting 63 and the flat metal fitting 66 from and into the terminal pin 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. 11 and 12, the bifurcated contact fitting 84 of the printed circuit board 81 is simply fitted onto the terminal pin 83, so the bifurcated contact fitting 84 and the terminal pin 83 are
A contact failure occurs due to a positional shift, and even if contact can be made without any shift, the power supply capacity is extremely small because the contact is a line contact due to the elasticity of the bifurcated contact fitting 84.

The present invention was developed in view of the above points, and is a highly reliable terminal pin contact device for a printed circuit board that allows for easy replacement of the printed circuit board and also enables reliable connection of the plug and the printed circuit board with high contact pressure. For the purpose of providing.

[Means for solving problems]

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

A screw mechanism 6 and an Ω-shaped terminal 16 that is inserted into the hole 4 and opposed to the screw mechanism 6 via a presser piece 15 are provided in the housing 1, and the Ω-shaped terminal 16 is connected to a printed circuit board 13 attached to the housing 1. Ω-shaped terminal 1
A notch hole 14 into which a terminal pin 12, which is the center contact of a plug attached to the equipment case, is removably inserted is provided in the housing part between the center upper part of the housing 1 and the Ω-shaped terminal side end surface 11 of the housing 1. The upper surface portion 39 of the Ω-shaped terminal 16 connecting the constricted portions 38 of the Ω-shaped terminal 16 is connected to the terminal pin 12 by pressing the presser piece 15 in the detachable direction.

[Effect]

When the screw mechanism 6 does not pressurize the presser piece 15,
The Ω-shaped terminal 16 has returned to its substantially original shape, and the presser piece 15 is pressed against the screw mechanism 6 side, and the connection with the terminal pin 12 of the plug located at the center of the interior of the Ω-shaped terminal 16 is released. The minimum gap B of the constricted portion 38 of the Ω-shaped terminal 16 is larger than the diameter of the terminal pin 12.

Here, when the presser piece 15 is pushed in by the screw mechanism 6, the Ω-shaped terminal 16 whose lower end is restrained by the recess 4 has a constricted portion 38 as the upper surface portion 39 is displaced downward, as shown in FIG. Expands inward, presser piece 15
The pushed-in upper surface portion 39 contacts the upper end of the terminal pin 12, and the constricted portion 38 contacts both lower sides of the terminal pin 12, thereby firmly clamping the terminal pin 12 from three sides.
Therefore, the terminal pin 12 of the plug and the printed circuit board 13
The ohm-shaped terminal 16 connected to the 3-point connection is securely connected with high contact pressure, resulting in a large power supply capacity.
Moreover, the reliability of the terminal contact portion can be improved.

When the pressure on the holding piece 15 is released by the screw mechanism 6, the Ω-shaped terminal 16 presses the holding piece 15 against the screw mechanism 6 due to its restoring force, returns to its substantially original shape, and disconnects from the terminal pin 12. Therefore, if the printed circuit board 13 attached to the device of the present invention is inserted into and removed from the equipment case along the axial direction of the notch hole 14, no load is placed on the terminal pins 12 of the connector, and the printed circuit board 13 is attached to the equipment case. 13 can be easily installed and removed.

〔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. This shield case 2 prevents interference electromagnetic waves and fault potentials from the outside, has a high frequency shielding function, and has a ground potential (reference potential) that is the same potential as the equipment case.

The housing portions 1a and 1b form a rectangular recess 4 from the approximate center of the mating surface 3 to the lower end, and between the rectangular recess 4 and the upper surface 5 is a recess 41 into which the screw hole 40 of the shield case 2 is fitted. Screw mechanism 6
A long groove 8 with a semicircular cross section into which half of the shaft of the set screw 7 is fitted, and a square hole 10 into which half of the hexagonal nut 9 of the screw mechanism 6 is fitted are formed in the middle thereof, and a square hole 10 is formed in the middle thereof into which half of the hexagonal nut 9 of the screw mechanism 6 is fitted. Ω from the upper center inside the terminal of the Ω-shaped terminal 16
A cutout hole 14 into which a terminal pin 12 of a plug attached to the side wall of the equipment case is inserted and removed is formed in the housing portion extending to the terminal side end surface 11 in the insertion/removal direction of the printed circuit board 13. An Ω-shaped terminal 16 that is a conductor and a presser piece 15 pressed against the screw mechanism 6 are fitted into the rectangular recess 4 .
The lower end of the Ω-shaped terminal 16 may be connected to the printed circuit board via a conductor, but in this embodiment, the Ω-shaped terminal 16 and the horizontal terminal portion 19 which is connected to the printed circuit board via a conductor are connected at one end. A relay terminal 20 is used, which is made up of a pair of L-shaped plates 18, 18 protruding from the bottom, and a bottom plate part 17 that integrally connects both lower ends of the Ω-shaped terminal 16 and the lower ends of the pair of L-shaped plates 18, 18. There is.

The housing 1 consists of housing parts 1a and 1b.A presser piece 15 and an Ω-shaped terminal 16 for pressing the presser piece 15 against the screw mechanism 6 are fitted into the rectangular recess 4 of one of the housing parts 1a or 1b, and the Ω-shaped terminal 16 is inserted into the square hole 10. 6
After fitting the square nut 9, fitting the other housing 1b or 1a, and fitting the thus assembled housing 1 into the shield case 2,
The housing 1 is fixed to the shield case 2 by bending a plurality of projecting pieces 23 provided on the housing insertion side edge of the shield case 2. Next, the threaded portion 34 of the set screw 7 is screwed into the screw hole 40 of the shield case 2, and when the screwing is completed, the end of the set screw 7 is screwed into the hexagonal nut 9, and the end of the set screw 7 is attached to the holding piece 15. comes into contact with. In this case, the screw hole 40 is provided because the set screw 7 is 6
This is to prevent it from falling out of the shield case 2 even if it comes off the square nut 9. The device of the present invention assembled in this way is inserted into the rectangular hole 24 of the printed circuit board 13 and fitted into the printed circuit board 13 by a pair of fitting parts 25, 25 formed at the middle of both outer surfaces of the shield case 2, and then the housing The horizontal terminal portion 19 of the relay terminal 20 protruding from the hole 36 of the portion 1a and the hole 37 of the shield case 2 is connected to the printed circuit board 13 via the conductor 21, and then the bottom portion 26 of the shield case 2 is connected to the metal Attach the top part 28 to the bottom plate 27 made of metal and the screws 31 and 3 to the metal cover 29, respectively.
Install with 2nd grade. 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, hole 1 of housing 1
4 communicates with the notch hole 43 of the shield case 2 and the notch hole 44 of the metal bottom plate 27, so the printed circuit board 13 is connected to the metal bottom plate 27 as shown in FIG.
When attached to the support tubes 33, 33 protruding inside the case 32 of the CATV transmission equipment, the notch holes 44, 4
3 and 14, the terminal pin 12 can be positioned at a predetermined position in the housing 1.

[Effect of idea]

As is clear from the above explanation, according to the present invention, the terminal pin, which is the center contact of the plug attached to the equipment case, is sandwiched between the Ω-shaped terminals from three directions by pushing the retaining piece using the screw mechanism. Therefore, the terminal pin and the Ω-shaped terminal connected to the printed circuit board can be 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. Furthermore, since 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, the printed circuit board can be easily attached to and removed from the terminal pins.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of an embodiment of the present invention seen from the front, Fig. 2 is a longitudinal sectional view seen from the same side, Fig. 3 is a front view of the same, and Fig. 4 is a perspective view of the CATV transmission equipment in use. Fig. 5 is an explanatory diagram of how to attach and remove printed circuit boards etc. of CATV transmission equipment, Fig. 6 is an explanatory diagram of how to assemble the embodiment of the present invention, and Fig. 7 is an explanatory diagram of the operation of the presser piece and Ω-shaped terminal with respect to the terminal pin. , 8th
9 is a perspective view of another conventional device, FIG. 10 is a sectional view of the same, and FIG.
The figure is a sectional view of another conventional device, and FIG. 12 is a view taken along arrow A in the same figure. DESCRIPTION OF SYMBOLS 1... Housing, 4... Hole, 6... Screw mechanism, 11... Ω-shaped terminal side end surface, 12... Terminal pin, 13... Printed circuit board, 14... Notch hole, 1
5... Pressing piece, 16... Ω-shaped terminal, 38... Narrow portion, 39... Upper surface portion.

Claims (1)

[Scope of utility model registration request] A screw mechanism and an Ω-shaped terminal that is inserted into the hole and opposes the screw mechanism via a holding piece are provided in the housing,
Connect the Ω-shaped terminal to the printed circuit board attached to the housing, and connect the Ω-shaped terminal from the top center of the housing to the Ω
A notch hole is formed in the housing part between the shaped terminal side end surface and into which the terminal pin of the plug attached to the equipment case can be inserted and removed in the direction of insertion and removal of the printed circuit board,
A terminal pin connecting device for a printed circuit board, in which the upper surface of the Ω-shaped terminal connecting the constricted portions is connected to the terminal pin by pressing a holding piece.