JPH0116292Y2 - - Google Patents

Description

[Detailed explanation of the idea]

INDUSTRIAL APPLICATION FIELD The present invention relates to antenna terminals for various receivers such as radio receivers, and various terminal connecting devices for various other electronic devices. BACKGROUND TECHNOLOGY AND PROBLEMS Conventionally, various receivers such as radio receivers and television receivers have an antenna terminal provided on the receiver body, and an outdoor antenna is connected to the antenna terminal with a lead wire. It is designed so that it can be used in a way that ensures good reception. Conventionally, various structures have been adopted for this type of terminal connection device, but the most commonly used structure uses a terminal made of metal screws, and the lead wire is screwed or the lead wire is This method involves clipping the connected alligator clip onto the head of the terminal. However, the screw-fastening method is troublesome to attach and detach the lead wires and lacks operability. In addition, the method using alligator clips has the disadvantage that when the lead wire is pulled unexpectedly, the alligator clip easily comes off from the terminal, resulting in a lack of connection reliability and an unsightly appearance. was. It should be noted that there are some conventional receivers with a special terminal structure, but in that case there are defects that increase the cost. Purpose of the invention The present invention aims to provide a terminal connection device that can correct the conventional defects as described above. Summary of the invention This invention provides a pair of clamping pieces on a metal plate, each of which is bent approximately at right angles, extends substantially parallel to each other, and is elastically movable in directions away from each other. A connection fitting comprising bent portions protruding in directions facing each other and a stopper piece formed by cutting and raising the metal plate between the two clamping pieces is covered with a protective member made of an insulating material,
By inserting the opening provided in this protective member into a screw-shaped metal terminal consisting of a head and legs having a diameter smaller than that of the head, the bending portions of both of the clamping pieces and the stopper piece can be connected to each other. This terminal connecting device is capable of clamping the head of a metal terminal, and is capable of reliably connecting a lead wire to an existing terminal made of, for example, a metal screw with one touch. Embodiments Hereinafter, embodiments of a connecting device according to the present invention for connecting a lead wire connected to an outdoor antenna to an antenna terminal of a receiver such as a radio receiver will be described with reference to the drawings. First of all, FIGS. 1 to 4 show the first embodiment, in which the receiver main body 1 has a head such as a metal screw and a pair of legs having a diameter smaller than that of the head. Terminal 2 is attached. Next is the outdoor antenna

The connecting device 4 for connecting the lead wire 3 connected to the (not shown) is constructed as follows. First, a protective member or holder 6 made of synthetic resin as an insulating member is composed of a holder main body 7 and a holder cover 8, which are integrally connected by a set screw 9. A pair of terminal insertion openings 10 are provided at the tip of the holder 6, and a pair of connection fittings 11 are installed in both terminal insertion openings 10. The connecting fitting 11 is made of, for example, a phosphor bronze plate plated with nickel or other various metal plates, and is press-worked, and has the shape shown in FIG. 4. That is, a pair of clamping pieces 13 are cut and raised at substantially right angles from both ends of the base plate portion 12 and are integrally formed, and these clamping pieces 13 are substantially parallel to each other. An inwardly bent portion 14 is integrally provided at the tip of each of these clamping pieces 13, and both clamping pieces 13 have elasticity in the near and far directions. Note that the bent portion 14 may have a substantially semicircular arc cross section as shown in the drawings, or may have a substantially V-shaped cross section. Further, a pair of stopper pieces 15 are cut and raised at a substantially right angle from the substantially central portion of the base plate portion 12 and are integrally formed. has been done. It is disposed between both clamping pieces 13 on the opposite side from the tip. Note that this connection fitting 11 has a fitting structure in which it is tightly attached to the inner surface of the inner wall 17 in each terminal insertion opening 11 of the holder 6 by means of its base plate portion 12.

[not shown], or fixed with adhesive or screws. On the other hand, as shown in FIG. 4, a printed circuit board 18 for electrically connecting the lead wire 3 and both connection fittings 11 is installed in the holder 6, and the tip of the lead wire is attached to one end of the wiring pattern 19. It is soldered. Further, a connecting piece 20 formed integrally with the connecting fitting 11 is inserted and soldered to the other end of the wiring pattern 19. By the way, as shown in FIG. 2, the head 2a of the terminal 2
The end surface 1 of both stopper pieces 15 for the thickness A of
5a and the base portion 14a of the bent portion 14 of both clamping pieces 13
The relationship between the distance B between them and the distance C between both end surfaces 15a and the tops 14b of both clamping pieces 13 is B
<A<C. In addition, as shown in FIG. 3, the maximum width in the left and right direction of the terminal insertion opening 10 is set such that the maximum width E in the left and right direction of both connecting fittings 11 can be larger than the maximum width D in the left and right direction between the heads 2a of both terminals 2. F
is sufficiently large. According to the connecting device 4 configured as described above, when it is inserted into both terminals 2 through both terminal insertion openings 10 as shown by the imaginary lines in FIG. 1, both terminals will be connected as shown in FIGS. Both clamping pieces 13 of both connecting fittings 11 are clamped to both heads 2a of terminals 2, and lead wires 3 are connected to both terminals 2.
You can connect to it with just one touch. That is, by the above-mentioned insertion, the head of the terminal 2 is bent while the two clamping pieces 13 are bent in the directions of arrows a and b in FIG. 2a is inserted between both clamping pieces 13 in the direction of arrow c in FIG. Then, the head 2a comes into contact with the tip surfaces 15a of both stopper pieces 15 and stops, but just before that, both clamping pieces 13 return in the directions of arrows d and e in FIG. 2 due to their elastic repulsive force. The edge portion 2c of the head 2a is elastically clamped from both sides by these bent portions 14.
In the clamped state, the arcuate surfaces 14c formed on the inner surfaces of both bent portions 14

[If the bent portion is formed into a V-shape, it becomes a tapered surface.] In Fig. 2, the pressing force in the directions of arrows d and e acts in the direction of arrow f in Fig. 2. Therefore, with the head 2a pressed relatively strongly against the tip surfaces 15a of both stopper pieces 15, both clamping pieces 13 clamp the head 2a relatively strongly from both sides, and the connecting device 4 connects both terminals. 2, and its state is maintained stably. As described above, according to this connecting device 4, the lead wire 3 can be reliably connected to both terminals 2 with one touch, and even if the lead wire 3 is pulled to some extent in the connected state, it can be It will not fall off. In addition, when removing the lead wire 3 from both terminals 2, it is sufficient to pull the connecting device 4 a little forcefully in the direction of arrow c in FIG. 2. Furthermore, according to this connecting device 4, due to the relationship D<E shown in FIG.
Even if the pitch P is slightly different, the desired connection can be made without any problem. Next, FIG. 5 shows a second embodiment,
In this case, both stopper pieces 15 are made to have elasticity in the direction of arrow g, and in this case, even if the thickness A of the screw head 2a of the terminal 2 is slightly different,
Desired connections can be made without any problems. Application Examples Although the embodiments of the present invention have been described above, the present invention is not limited to devices for connecting lead wires to antenna terminals, but can be applied to various types of devices, such as devices for connecting lead wires to speaker terminals of stereo equipment. It can be widely applied to terminal connection devices in electronic equipment. Effects of the Invention As described above, the present invention allows lead wires to be connected to existing terminals made of, for example, metal screws with one touch, and is easy to attach and detach, providing very good operability. In addition, the connection is secure and difficult to accidentally disconnect, the connection is highly reliable, and it looks good. Further, since the connecting fitting is integrally formed from a single metal plate by press working or the like, the structure and manufacture are simple, the number of parts and the number of assembly steps are small, and the cost is extremely low.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and
Figures 1 to 4 show the first embodiment.
The figure is a perspective view showing the terminal and the connecting device, FIG. 2 is a cross-sectional view of the main part with the connecting device connected to the terminal, FIG. 3 is a view taken along the line shown in FIG. 2, and FIG. A perspective view of the connecting fitting, and FIG. 5 is a sectional view similar to FIG. 2 showing the second embodiment. In addition, in the symbols used in the drawings, 1... Receiver body, 2... Terminal, 2a... Terminal head, 3
... Lead wire, 4 ... Connection device, 6 ... Holder, 10 ... Terminal insertion slot, 11 ... Connection fitting, 1
2... Base plate portion, 13... Clamping piece, 14... Bent part, 15... Stopper piece.

Claims (1)

[Scope of utility model registration request] A pair of clamping pieces are provided on the metal plate, each of which is bent approximately at right angles, extends substantially parallel to each other, and is elastically movable in directions away from each other, and both clamping pieces protrude in directions facing each other. The connecting fitting is provided with a stopper piece made by cutting the metal plate between the two clamping pieces, and is covered with a protective member made of an insulating material, and the opening provided in the protective member is The head of the metal terminal is clamped between the respective bending parts of both clamping pieces and the stopper piece by inserting it into a screw-shaped metal terminal consisting of a leg part and a leg part having a smaller diameter than the head part. Terminal connection device designed to obtain.