JPH0815102B2 - Terminal block - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block used for connecting electric wires to various electric devices.

[0002]

2. Description of the Related Art Conventionally, as a terminal block of this type, a terminal plate and a body for accommodating a locking spring for holding an electric wire between the terminal plate and the terminal body are installed, and the terminal plate is electrically connected to the terminal plate. There is provided one in which an electrically connected terminal piece is projected and an electric wire insertion hole for introducing an electric wire into the body is provided on the other surface of the body (Japanese Utility Model Laid-Open No. 58-177974). The electric wire introduced through the electric wire insertion hole is sandwiched between the terminal plate and the locking spring.

This terminal block is constructed so that the body is housed in the recess provided in the instrument body.
There is a problem that a recess having a special shape must be formed on the instrument body side. Further, when electrically connecting the outer conductor to the terminal piece, there is no means for fixing the positional relationship between the body and the outer conductor, so that contact failure may occur.

As a solution to such a problem, a device disclosed in Japanese Utility Model Laid-Open No. 61-6276 has been proposed.
A terminal block in which a locking piece that engages in a shape inserted through a mounting hole provided in a mounting plate is provided on the body, and the terminal piece is provided on one surface of the body on which the locking piece is projected. There is.

[0005]

By the way, the above terminal block has a structure in which three terminal plates are installed in the body and two locking springs are provided for each terminal plate. ing. That is, two electric wires can be connected to each terminal board, and feed wires can be formed.

If this terminal block is used, it is possible to connect the electric devices in parallel by repeating the feed wiring between the electric devices.
Only the pair of feed wires can be pulled out.
That is, when the electric devices are arranged in one row, the wires can be connected in a straight line, so that the wiring work can be easily performed. However, when the electric devices are not arranged in one line, the electric wires are routed. This causes a problem that the total length of the electric wire becomes long.

An object of the present invention is to solve the above-mentioned problems, and to stabilize the electrical connection between the outer conductor and the terminal piece as a structure for mechanically connecting the body to the mounting plate. Moreover, it is an object of the present invention to provide a terminal block in which the entire length of the electric wire is relatively short regardless of the arrangement state of the electric device.

[0008]

According to a first aspect of the present invention, in order to achieve the above object, a container made of an insulating material, three terminal plates installed substantially parallel to each other inside the container, and a container. A terminal block provided with a locking spring that holds an electric wire inserted through an electric wire insertion hole formed in one surface of the body between each terminal board, and a mounting plate separately provided on the other surface of the body. Engaging legs that engage in a form of being inserted into a mounting hole punched in are projectingly provided, and at least three terminal pieces electrically connected to the respective terminal plates project from the other surface of the body, At least three locking springs are provided for each terminal plate.

According to a second aspect of the present invention, the mounting plate is a printed wiring board, and the terminal piece is formed in a shape capable of being connected to the printed wiring board by soldering. In claim 3,
The terminal piece is formed in a flat plate shape so that it can be removably inserted into an insertion hole of a conductive member having an insertion hole having a rectangular cross section. According to a fourth aspect of the invention, in the device body, three connecting pieces electrically connected to the respective terminal plates protrude on a surface different from the surface on which the terminal piece and the wire insertion hole are provided,
The terminal piece is formed in a shape so that it can be connected to a printed wiring board by soldering, and the connection piece is a flat plate so that it can be removably inserted into an insertion hole of a conductive member having an insertion hole with a rectangular cross section. It is formed into a shape.

[0010]

According to the structure of the first aspect of the present invention, the engaging leg that engages while being inserted into the mounting hole formed in the mounting plate is projectingly provided on one surface of the body, and the surface on which the engaging leg projects in the body. Since three terminal pieces that are electrically connected to the three terminal plates that are installed inside the body project from the body, insert the engagement legs that are provided on the body into the mounting holes that are provided on the mounting plate. By doing so, the body can be fixed to the mounting plate.If the outer conductor that is electrically connected to the terminal piece is fixed to the mounting plate, the body can be fixed to the mounting plate by fixing the body to the mounting plate. The conductor is positioned and the electrical connection is stable.

Further, three terminal plates are installed in the body so as to be substantially parallel to each other, and at least three locking springs for sandwiching the electric wires with the terminal plates are provided for each terminal plate. Since it is provided, two or more sets of feed wiring can be drawn out, and even if the electric devices to be connected are not arranged in a row, the wiring can be performed efficiently and the total length of the electric wire can be increased. Can be relatively short.

The configurations of claims 2 to 4 are preferred embodiments of the present invention.

[0013]

EXAMPLE 1 In this example, as shown in FIG. 1, a terminal plate 2 made of a conductive sheet metal was formed into a shape that could be soldered to a conductive pattern of a printed wiring board. An example in which the terminal pieces 3 are integrally provided is shown.

The body 1 is a body 1 having an open upper surface in FIG.
1 and a cover 12 that is coupled to the body 11 by assembling screws 13 that are screwed together to close the opening of the body 11. Here, it is desirable that the body 11 and the cover 12 are synthetic resin molded products, and at least the cover 12 is made of heat-resistant synthetic resin. Inside the body 11, three terminal housing chambers 15 are formed by being partitioned by partition walls 14 that are substantially parallel to each other, and the terminal boards 2 are housed in the respective terminal housing chambers 15. That is, the terminal boards 2 are arranged substantially parallel to each other. On the other hand, the cover 12 is formed in a flat plate shape, and the engaging legs 4 are projectingly provided at four corners.
A groove 16 is formed around the base of the engagement leg 4 in the cover 12 so as to extend over the entire circumference. Engagement hooks 4a are formed at the tips of the engagement legs 4, and the printed wiring board 5 serving as a mounting plate is formed.
When the engaging leg 4 is inserted into the mounting hole 6 formed in the mounting hole 6, the engaging hook 4a engages with the peripheral portion of the mounting hole 6 and the cover 12 is fixed to the printed wiring board 5.

The terminal plate 2 is formed by processing a conductive metal plate, and the terminal plate 2 is integrally provided with a pair of terminal pieces 3. Further, each terminal piece 3 is provided with three locking springs 7 and two release buttons 8 correspondingly. One of the release buttons 8 is two of the three locking springs 7.
And the other release button 8 is the remaining one locking spring 7
It is arranged corresponding to. The locking spring 7 has a spring force toward the terminal plate 2 and holds the electric wire between the locking spring 7 and the terminal plate 2. Further, by operating the release button 8 to separate the locking spring 7 from the terminal plate 2, the electric wire held between the terminal plate 2 and the locking spring 7 can be pulled out. As shown in FIG. 3, the body 1 has an electric wire insertion hole 9 for inserting an electric wire clamped between the terminal plate 2 and the locking spring 7, and a driver button for operating the release button 8. A button operation hole 10 for inserting a tip or the like is formed. The electric wire insertion holes 9 are bored corresponding to the respective locking springs 7. Since the three terminal plates 2 correspond to the three locking springs 7, there are nine electric wire insertion holes. 9 are arranged in a grid pattern. The terminal piece 3 integrally provided on the terminal plate 2 projects to the outside of the body 1 through the extraction hole 17 (see FIG. 1) formed in the cover 12. Therefore, as shown in FIG.
The terminal piece 3 projects on the same surface as the engaging leg 4.

According to the above configuration, the body 1 can be mechanically fixed to the printed wiring board 5 by engaging the engaging legs 4 with the mounting holes 6 formed in the printed wiring board 5, and The terminal piece 3 can be electrically connected to the conductive pattern 18 formed on the printed wiring board 5 by soldering. By thus positioning the body 1 with respect to the printed wiring board 5, the electrically connected state of the terminal piece 3 is also stabilized. Moreover, when connecting the terminal piece 3 to the printed wiring board 5, the solder bath is simply passed through,
The electrical connection of the terminal piece 3 is facilitated, and the groove 16 is formed around the base of the engagement leg 4, so that the solder is prevented from being sucked between the body 1 and the printed wiring board 5. Of. Further, when the electric devices are not arranged in one row, as shown in FIG. 4, the feed wiring can be branched in two directions from one terminal block A, so that only one set of feed wiring is provided. Compared to a terminal block that cannot be used, wiring is easier and the overall length of the wire is shorter.

(Embodiment 2) This embodiment is based on FIG. 5 and FIG.
As shown in FIG. 2, the terminal piece 3a protruding from the terminal plate 2 is formed into a flat plate shape that can be removably inserted into an insertion hole of a conductive member (so-called faston terminal) having an insertion hole with a rectangular cross section. is there. According to this configuration, the electric wire whose one end is connected to the conductive member can be connected to each of the terminal pieces 3. For example, as shown in FIG. Even if the length of each electric wire 19 connecting between the electric device B and the electric device B is different, it can be easily coped with. Further, as shown in FIG. 7 (b), in the case of the electric device B in which different speakers are used for normal broadcasting and for emergency contact, one terminal board 2 is used for common connection,
The remaining two terminal boards 2 can be used for normal broadcasting and for emergency contact, respectively.

The other structure is similar to that of the first embodiment, and the description thereof is omitted. (Embodiment 3) In this embodiment, as shown in FIGS. 8 and 9, in addition to the construction of Embodiment 1, the terminal plate 2 is integrally provided with a connecting piece 3a. The connection piece 3a is the second embodiment.
Similar to the terminal piece 3 in FIG. 3, it is formed in a flat plate shape that can be removably inserted into an insertion hole of a conductive member having an insertion hole having a rectangular cross section. The connection piece 3a projects from the body 1 on a surface different from the surface on which the terminal piece 3 projects and the surface on which the wire insertion hole 9 is formed.

According to this structure, an electric device B such as a speaker for normal broadcasting is connected as shown in FIG. 10 (a), and an electric device B such as a speaker for emergency communication is connected. As a result, the attenuator 20 can be used to make the connection as shown in FIG. Here, N is a terminal for normal broadcasting, R is a terminal for emergency contact, and C is a common terminal.

The other structure is similar to that of the first embodiment, and the description thereof is omitted.

[0021]

As described above, according to the present invention, the engaging legs that engage with each other by being inserted into the mounting holes formed in the mounting plate are projectingly provided on one surface of the body, and the engaging legs project in the body. Since three terminal pieces electrically connected to the three terminal plates installed in the body project from the surface, the engaging legs provided on the body can be attached to the mounting holes provided on the mounting plate. When inserted, the body can be fixed to the mounting plate.If the outer conductor electrically connected to the terminal piece is fixed to the mounting plate, the body can be fixed to the terminal plate by fixing the body to the mounting plate. Positioning with the outer conductor is performed, and there is an advantage that the electrical connection state is stable.

Further, three terminal plates are installed inside the body so as to be substantially parallel to each other, and at least three locking springs for sandwiching the electric wire with the terminal plates are provided for each terminal plate. Since it is provided, two or more sets of feed wires can be drawn out, and even if the electric devices to be connected are not arranged in a row, the wiring can be performed efficiently and the total length of the electric wire can be increased. The effect is that it can be made relatively short.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment.

FIG. 2 is a perspective view showing a first embodiment.

FIG. 3 is a rear perspective view of the first embodiment.

FIG. 4 is an explanatory diagram showing a connection example of the first embodiment.

FIG. 5 is an exploded perspective view showing a second embodiment.

FIG. 6 is a perspective view showing a second embodiment.

FIG. 7 is an explanatory diagram showing a usage example of the second embodiment.

FIG. 8 is an exploded perspective view showing a third embodiment.

FIG. 9 is a perspective view showing a third embodiment.

FIG. 10 is an explanatory diagram showing a usage example of the third embodiment.

[Explanation of symbols]

 1 Body 2 Terminal board 3 Terminal piece 3a Connection piece 4 Engaging leg 5 Printed wiring board 6 Mounting hole 7 Locking spring 9 Wire insertion hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasumori Kokubun 3-12 Moriya-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Japan Victor Company of Japan, Ltd. (56) References: Kaihei 3-118585 (JP, U)

Claims (4)

[Claims] 1. A body made of an insulating material, three terminal plates installed substantially parallel to the inside of the body, and an electric wire inserted through an electric wire insertion hole formed in one surface of the body. In a terminal block having a lock spring that is sandwiched between the terminal plate and the terminal plate, engaging legs that engage with the other surface of the body by being inserted into a mounting hole formed in a mounting plate separately provided At least three terminal pieces electrically connected to the respective terminal plates project from the other surface of the body, and at least three locking springs are provided for each terminal plate. Terminal block characterized by being composed of 2. The terminal block according to claim 1, wherein the mounting plate is a printed wiring board, and the terminal piece is formed in a shape that can be connected to the printed wiring board by soldering. . 3. The terminal piece is formed in a flat plate shape so as to be removably insertable into an insertion hole of a conductive member having an insertion hole having a rectangular cross section. Terminal block. 4. In the above body, three connecting pieces electrically connected to each terminal plate are projected on a surface different from the surface on which the terminal piece and the wire insertion hole are provided, and the terminal piece is The printed wiring board is formed in a shape so as to be connectable by soldering, and the connection piece is formed in a flat plate shape so as to be detachably attachable to an insertion hole of a conductive member having an insertion hole having a rectangular cross section. The terminal block according to claim 1, wherein