JPH039252Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a television terminal that is incorporated into a switchbox via a mounting frame, and more particularly to a support structure for a printed circuit board disposed within a shield case. Here, the term "switchbox" refers to both a type that is embedded in a wall surface, etc., and an outlet box that is used for exposed wiring.

B. Prior art A TV terminal that is incorporated into a switch box via a mounting frame was developed in the 1980s.
There are many examples including those described in Japanese Patent Application Laid-open No. 93371 and Japanese Patent Application Laid-open No. 119087/1987. These TV terminals are electrically connected to a printed circuit board placed in parallel with the cover inside the shield case and each connection terminal, and the printed circuit board is fixed by a small This is achieved by locking with the protrusion.

C. Problems to be solved by the invention In conventional TV terminals, the connection between the output terminal and the printed circuit board is made by either extending the connection side of the output terminal so that it comes into contact with a predetermined connection point on the printed circuit board, or by using a lead wire. must be intervened. Therefore, the work performed in a narrow space inside the shield case is complicated and requires skill. Further, the printed circuit board is supported by small protrusions formed on the inner surface of the shield case, and a short circuit accident in which the conductor portion on the printed circuit board contacts the surface of the shield case is likely to occur.

D. Means for Solving the Problem Therefore, the present invention arranges the printed circuit board perpendicular to the cover and in the center of the shield case, making it possible to connect each terminal directly to the printed circuit board, and at the same time, providing space between the shield case and the printed circuit board. The structure is such that a mounting window is cut out on the surface including the center of the side plate of the shield case, and the terminal fitting is inserted into the insulating terminal plate fitted into the mounting window. Attach the connecting pins to the left and right center of the shield case side panels so that they protrude inward.
Support protrusions are formed on the terminal plates on both sides of the protruding connection pins, separated by the thickness of the printed circuit board, so that the printed circuit board can be disposed perpendicular to the cover and in the center of the shield case.

E Function Inside the shield case, the connection pins of each terminal are located on the plane perpendicular to the cover at the center.
Since the printed circuit board is arranged to match the surface thereof, each terminal pin and the printed circuit board can be directly bonded. In addition, support protrusions are formed on both sides of the connection pin of the terminal fitting that protrudes from the insulating terminal plate section, with support projections separated by the thickness of the printed circuit board.
By inserting the printed circuit board between the support protrusion and the connection pin, the printed circuit board can be fixed and the connection pins of each terminal can be connected to predetermined portions of the printed circuit board with a single touch.

E. Embodiment The drawings show the television terminal of the present invention. In FIGS. 1 and 2, in which each member is separated, 1 is a synthetic resin cover with a TV output terminal 2 formed in the center of the front side. There are locking protrusions 3, 3, 3, 3 formed on the left and right sides of the cover to lock the locking parts of the mounting frame, which will be described later. Hooks 4, 4 for stopping are formed. In the output terminal section 2, the center part of the annular groove 2a is a cylindrical projection 2b into which the cylindrical electrode body 5 is fitted. An expanded needle hole 6 through which the needle can be inserted is bored, and an insulating holding member 7 is provided on the rear side.
A fitting hole 2d for the receiving blade fitting 8 held by the blade is formed. Reference numeral 9 denotes a metal shield case body having a U-shaped cross section;
A cutout window 10 is formed in the center of the back plate part 9a that contacts the back surface of the cover 1 to locate the rear side of the output terminal part, and hooks formed on the cover are formed on both front and rear edges. Locking piece 1 to be locked
1 and 11 are provided protrudingly. Further, at the edge of the cutout window 10, there are contact pieces 12, 12 that contact the connecting pins 5a, 5a that protrude to the back surface of the case 1 when the cylindrical electrode body 5 is fitted onto the cylindrical protrusion 2b, and a circle. A pressure contact piece 13 is integrally formed to contact and press the rear part of the insulating holding member 7 of the receiving blade fitting 8 housed in the columnar projection 2b. Also, the coaxial cable is connected to the side plates 9b, 9b of the shield case main body 9.
It is possible to attach an Ω-shaped holding fitting 14 that is pressed against and fixed to the coaxial cable, and a terminal fitting 15 for connecting the center conductor of the coaxial cable. The insulating terminal plate 17 to which the terminal fittings 15 are attached is fitted into the mounting window 16 . The terminal plate 17 has grooves 18 and 18' formed on one side edge and the upper edge thereof, so that the terminal plate 17 can be reasonably fitted to the inner circumferential edge of the mounting window at two locations. The presser metal fittings 14 and the terminal metal fittings 15 are symmetrical with respect to each side plate 9b, and the connecting pins 15a of the terminal metal fittings 15 are located at the center of the left and right sides of the side plates 9b. Support protrusions 19, 19' are formed on the left and right portions of the contact piece 15a and the printed circuit board, separated by a thickness. Therefore, if the printed circuit board 20 is inserted with one edge between the support protrusion 19 and the connecting pin 15a and the other edge between the connecting pin 15a and the support protrusion 19', both the connecting pins 15a and 15a will be connected to the printed circuit board 20. In addition, the rear end of the receiving blade fitting 8 of the center conductor also comes into contact with a predetermined portion of the printed circuit board 20 . In the drawings, reference numeral 2b denotes a metal cover of the shield case that has a spring force that allows it to be fitted and combined with the shield case main body 9.

The TV terminal configured as above is
First, the cylindrical electrode body 5 is fitted onto the cylindrical projection 2b of the cover 1, and the connecting pins 5a protruded from the lower ends of both sides.
is projected to the back side of the cover 1, and then the receiving blade fitting 8 held by the insulating holding member 7 is inserted into the insertion hole 2d formed on the back side of the cover 1. In this way, the receiving blade fitting 8 reliably grips the center conductor of the coaxial cable inserted through the needle hole 6, thereby enabling electrical connection. Next, the side plate 9b of the shield case body 9
Then, attach the presser metal fitting 14 with screws, fit the groove 18 formed on one side edge of the terminal plate 17 into the inner peripheral edge of the mounting window 16 of the side plate 9b, and then fit the groove 18' formed on the upper edge. Attach by sliding it in the direction it will fit. Then, the hooks 4, 4 of the cover 1 are respectively locked to the locking pieces 11, 11 of the shield case main body 9, and at the same time, the shield case main body 9 and the cover 1 are integrated, and at the same time, the contact pieces of the shield case main body 9 are 12, 12 and the connecting pins 5a, 5a of the cylindrical electrode body 5 are brought into contact, and the receiving blade metal fitting 8 is pressed against the pressure welding piece 13 of the shield case body 9.
It is supported in a pressed state by. Furthermore, insert the printed circuit board between the side plates 9b, 9b of the shield case main body 9, and connect the contact pieces 12, 12, the connecting pins 5a, 5a, the base end of the receiving blade fitting 8, and the connecting pins 15a, 15a of the terminal fitting 15. They are each fixed to a printed circuit board by soldering, and assembly is completed by fitting the metal cover 21 of the shield case.

In the TV terminal formed in this way, support protrusions are provided on both sides of the connection pin of the terminal fitting protruding from the center of the side plate within the shield case, separated by the thickness of the printed circuit board. A one-touch operation of inserting both sides between the connecting pin and the protrusion sets the connecting pin of each terminal and the printed circuit board so that they can be directly joined. Therefore, there is no need to extend the connection side of the output terminal or make an electrical connection between the output terminal and the printed circuit board via a lead wire, and since the printed circuit board is temporarily fixed, it is not necessary to solder it. This eliminates the need to support the printed circuit board by hand. In addition, the printed circuit board has its side edges in contact with the surface of an insulating terminal board, and is supported by the connecting pins and insulating support protrusions of a terminal fitting that protrudes from the terminal board and connects to the printed circuit board. There is no misalignment of the mounting position, and high insulation between the printed circuit board and the shield case is maintained. Furthermore, since the side plates of the shield case are point symmetrical with respect to each other, the input side and the output side can share the terminal board.

In this embodiment, a case for an intermediate branch is described in which coaxial cable connection parts are provided on both sides of the shield case, but the structure of the TV terminal according to the present invention is such that a coaxial cable connection part is provided only on one side. This also applies to terminal branching. Then, as shown in FIG. 5, for example, as shown in FIG. Three TV terminals can be neatly housed in the space.

In the present invention, the support protrusions are not only formed one on each side of the connection pin of the terminal fitting, but also multiple support protrusions can be formed along the printed circuit board. It is sufficient that the printed circuit board can be supported on both sides of the connecting pin by the connecting pin and the support protrusion, and the side surfaces of the shield case can be formed symmetrically.

Effects According to the present invention, the electrical connection between each terminal can be directly attached by simply setting the printed circuit board in a predetermined location. Since the position of the printed circuit board does not shift and the shield case does not come into contact with each other, the occurrence of electrical troubles is extremely reduced. In particular, if three television terminals can be installed in the same switch box, there is no need for detailed work even in a narrow shield box, resulting in high productivity and great benefits.

[Brief explanation of the drawing]

1 and 2 are separated perspective views of the television terminal according to the present invention, FIG. 3 is a perspective view of the same assembled state, FIG. 4 is an explanatory view showing the state in which the printed circuit board is supported, and FIG. It is an explanatory diagram of an example of use. 1... Cover, 2... Output terminal portion, 2a... Annular groove, 2b... Cylindrical projection, 3... Locking projection,
4... Hook, 5... Cylindrical electrode body, 5a... Connection pin, 6... Needle hole, 7... Insulation holding member, 8...
Blade fitting, 9...Shield case body, 9a...
Side plate, 9b... Side plate, 10... Cutout window, 11
... Locking piece, 12 ... Contact piece, 13 ... Pressure contact piece,
14... Presser metal fitting, 15... Terminal metal fitting, 15a...
... Connection pin, 16 ... Mounting window, 17 ... Terminal board, 18, 18' ... Groove, 19, 19' ... Support projection, 20 ... Printed circuit board, 21 ... Cover,
22...Mounting frame, 23...Switch box, 24...Flash plate.

Claims (1)

[Scope of utility model registration request] An output terminal part is formed in the center of the surface of the cover, and the back side of the cover is covered with a shield case, and a connection terminal part that connects and fixes the end of the coaxial cable, which is made up of a holding metal fitting and a terminal metal fitting, to the side surface of the shield case. In a television terminal that can be incorporated into a switchbox via a mounting frame, the terminals are electrically connected via a printed circuit board disposed inside a shield case, and
Cut out and form a mounting window on the surface including the center of the shield case side plate, and connect the terminal fittings to the insulating terminal board fitted in the mounting window so that the connecting pins move inward at the left and right center of the shield case side plate. The printed circuit board is installed in a protruding state, and supporting protrusions are formed on the terminal plates on both sides of the protruding connection pins, separated by the thickness of the printed circuit board, so that the printed circuit board can be arranged in the center of the shield case perpendicular to the cover. A television terminal that is characterized by: