JPS5847661Y2 - Plug type terminal device - Google Patents

Description

[Detailed description of the invention] This invention relates to a plug-type terminal device, and more specifically, the wiring on the insertion frame side and the wiring on the plug side can be separated and organized by a partition wall, and can be attached and detached. The present invention relates to a simple and improved plug-type terminal device.

BACKGROUND ART Plug-type terminal devices are used to connect and relay control circuit cables that are drawn into a switchboard from the outside, and to relay and branch wiring between each other.

This type of plug-type terminal board is capable of: ■ being able to reliably connect and relay electric wires and cables, etc., ■ being easy to connect and disconnect wiring, and ■ ensuring safety during maintenance and inspection. Generally required.

Furthermore, if it is necessary to bring in electrical wires from the outside into a distribution board and relay them, a relay terminal board is installed on a bulkhead that defines compartments within the distribution board, but in this case, it is necessary to connect wires between each other and between the compartments. In order to prevent accidents from spreading between the two, it is required that the wiring and compartments be separated from each other by this terminal board.

This separation function is particularly required as an essential feature in terminal boards used in closed switchboards.

However, in the terminal board according to the prior art, as described in, for example, Japanese Utility Model Publication No. 51-6684, the plug terminal block is inserted and fixed above the plug side terminal block fixed to the board of the switchboard etc. Therefore, it is difficult to separate the wiring on the spigot side from the wiring on the plug socket, and almost no measures have been taken to prevent accidents from spreading.

Therefore, 1. As a result of various studies to overcome all the problems of the conventional device mentioned above, the inventor bent a flat conductive metal plate into an L shape and used a part for wiring connection. A predetermined number of plug-in terminals each formed as a terminal and the other part as a plug-in tab are arranged in pairs and fixed to a plug terminal block so as to protrude from one side of the plug terminal block; A predetermined number of pairs of receptacle terminals each having one end of the conductive metal plate formed as a contact portion that engages with the insertion tab and the other end configured as a wire crimping connection portion are arranged and fixed to the socket terminal block. The plug terminal block is fixed to the negative side of the partition plate, and the insertion tab of the plug terminal of the plug terminal block is made to penetrate and protrude from the opening provided in the partition plate. By connecting the plug terminal block to the insertion tab on the other side of the bulkhead plate so as to fit into the receptacle terminal that is housed and fixed in the opening, the bulkhead plate securely connects the wiring connection parts and between the wires. It has been found that the above-mentioned problems can be solved all at once, since the wires can be separated from each other, are easily attached and detached, and the wiring can be easily maintained and inspected.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a plug-type terminal device that can prevent the spread of accidents by completely separating the terminals by a partition wall, allows easy and safe maintenance and inspection work, and can be easily attached and detached.

According to the present invention, the purpose is to symmetrically arrange pairs of plug-in terminals each of which is formed by bending a conductive plate material into an L shape and forming one part as a screw tightening part and the other part as a plug-in tab. A plug terminal block in which each screw tightening part is arranged and fixed to a terminal block having spaced apart terminal accommodating parts, and one end of a conductive plate material is formed as a contact engagement part, and the other end is formed as a crimp connection part. a terminal block for a socket, in which pairs of receptacle terminals arranged and fixed in the terminal block are arranged and fixed in the terminal block for a socket; A terminal block is fixed to one side of the bulkhead plate, and the insertion tab of the plug terminal of the plug terminal block is made to penetrate and protrude through an opening provided in the bulkhead plate, while the other side of the bulkhead plate is fixed to the other side of the bulkhead plate. This is accomplished by connecting the plug terminal block to the insertion tab so as to fit into the receptacle terminal housed and fixed in the opening thereof.

Next, a preferred embodiment of the plug-type terminal device according to the present invention will be described in detail with reference to the accompanying drawings.

The frame-type terminal device 10 according to the present invention basically comprises a plug terminal block 12 and a socket terminal block 14, as shown in FIG.

As clearly seen from FIGS. 2 to 4, the plug terminal block 12 is a rectangular parallelepiped base made of an electrically insulating material.

That is, on the surface of the base 12, there are vertical ribs 16 that extend upright in the longitudinal direction of the center and separate the terminals in the same row, and the vertical ribs 16.
A large number of horizontal ribs 18 arranged at a predetermined distance apart so as to be perpendicular to the ribs 6 are integrally formed.

The section defined by the vertical ribs 16 and the respective horizontal ribs 18 is recessed from the surface of the base 12 by a predetermined depth to form a terminal accommodating section 20, and furthermore, a cylindrical blind hole is formed in this terminal accommodating section 20. 22 is bored to form a female threaded hole for fixing the crimp terminal.

Further, in the center of the bottom of the base 12, as shown in FIGS. 3 and 4, openings 24 having a rectangular cross section and communicating with each terminal accommodating section 20 are correspondingly bored. A plug-in terminal 26, which will be described later, protrudes from the terminal accommodating portion 20 toward the back surface of the base 12 through the opening 24.

This plug-in terminal 26 is formed by bending a highly conductive metal plate into an L shape, and as shown in FIG. It is attached so as to protrude through the rectangular opening 24.

The terminal 26 is fixed to the base 12 by fitting the tongue-like protrusion 28 formed on the terminal 26 into the vertical rib 16, and the terminal piece protruding from the back surface of the base 12 is , is formed as an insertion tab so that it can be inserted into a terminal block 14 for a socket, which will be described later.

Further, in the terminal 26 accommodated in the terminal accommodating portion 20, a tightening screw 30 for a crimp terminal (not shown) is screwed into the female screw hole 22 via a flat washer 32 and a spring washer 34.

Therefore, it can be understood from FIGS. 3 and 4 that a large number of insertion tabs in each village protrude from the back surface of the base 12 in a comb-like shape corresponding to the number of terminals.

Next, Fig. 5, Fig. 6, and Fig. 8 show the terminal block 14 for the socket.
Show details.

This socket terminal block 14 is made of an electrically insulating material as a base material,
It consists of a rectangular parallelepiped base that is smaller overall than the plug terminal block 12.

This terminal block 14 has a large number of square holes 36 drilled in a harmonica shape in a single line, and inside each square hole 36 is a receptacle terminal 3 made of a highly elastic and highly conductive metal plate.
Accommodates 8.

In one embodiment, the receptacle terminal 38 is the seventh
As shown in the figure, the top of the support stem 40 is substantially T-shaped and extends left and right, and then curved into a crescent shape to form the contact and retention part 42, and the base of the support stem 40 is also formed into a crescent shape. After branching and extending to the left and right, it is curved into a substantially C shape to form a crimp connection portion 44 for the electric wire.

To fix the receptacle terminal 38 into the corner corner 36 of the terminal block, in the same way as fixing the plug terminal 26, attach a tongue-shaped protrusion (not shown) provided on the side surface of the receptacle terminal 38 to the corner corner 36.
This is done by fitting 6.

The drilling position dimensions of the square holes 36 and the degree of expansion of the receptacle terminal retaining portion 42 are such that the insertion tabs of the many terminals 26 that protrude neatly from the plug terminal block 12 come into contact with the receptacle terminals 38. Settings are made in advance so that they can be reliably inserted into the respective retaining portions 42 with appropriate elastic friction.

FIG. 8 shows the surface of the terminal block 14 for a socket configured as described above.

Next, the actual usage of the plug-type terminal device according to the present invention will be explained.

As shown in FIGS. 1 and 9, for example, a closed switchboard (
The bulkhead plate 46, which is disposed in a compartment (not shown) and defines a compartment, has a substantially rectangular shape having a diameter slightly smaller than the back side of the plug terminal block 12 and a slightly larger diameter than the plug terminal block 14. A shaped opening 48 is bored, and the plug terminal block 12 is fixed to one side of the partition plate 46 with screws 50.

Next, the square holes 3 exposed on the surface of the socket terminal block 14, each of which has a large number of external wirings crimped and connected to the receptacle terminals 38, are connected.
6 (see FIG. 8) is forcibly pressed into the insertion tab protruding into the opening 48.

At this time, the insertion tab is securely elastically locked by the contact engagement portion 42 of the receptacle terminal 38, and eventually the plug terminal block 1
4 is held on the opposite side of the plug terminal block 12 via a partition plate 46.

Therefore, the wiring on the insertion frame side and the wiring on the plug side are connected to the bulkhead plate 4.
6, which effectively prevents accidents from spreading between the wirings and between the compartments.

In addition, FIG. 10 shows a modification in which only the receptacle terminal 38 is used without using the terminal block for the socket.

As described above, according to the present invention, a plug terminal block for intercepting a plug type terminal device is fixed to a mounting plate (partition plate), and a screw for connecting a crimp terminal is provided at one end of the plug terminal. Since the terminal block for the socket is located in the direction opposite to the tightening side of this screw and is configured to engage with the plug-in terminal, the wiring on the plug-in frame side and the socket side is securely attached. They can be separated from each other by a board (partition board), and safety is improved by preventing accidents from spreading between wirings and between compartments.

Furthermore, according to the device of the present invention, the installation area is approximately the same as that of the terminal device according to the prior art, and the volume can be significantly reduced, so that the installation area per number of terminal poles is approximately It can be ÷.

Therefore, there is an advantage that the terminal portion of the switchboard can be designed to be reduced in size.

Further, unlike a sealed connector, one end of the wiring connection part is a screw terminal, so maintenance and inspection of the wiring can be easily performed, and maintainability and electrical safety are further improved.

The plug-type terminal device according to the present invention has been described above with reference to a preferred embodiment, but the present invention is not limited to this embodiment, and many improvements and changes can be made within the spirit of the invention. It's something you get.

[Brief explanation of drawings]

Fig. 1 is a cutaway perspective view of an embodiment of a plug-type terminal device according to the present invention, Fig. 2 is a plan view of a plug terminal block used in the present invention, and Fig. 3 is a terminal shown in Fig. 2. A bottom view of the base, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2, FIG. 5 is a bottom view of the terminal block for the socket used in the present invention, and FIG. 7 is a perspective view of a receptacle terminal used in the terminal block for a socket shown in FIG. 5, FIG. 8 is a plan view of the terminal block shown in FIG. 5, and FIG. 9 is a plug according to the present invention. FIG. 10 is a cross-sectional view showing a state in which the mold terminal device is used, and FIG. 10 is a cross-sectional view showing a modification of the device of the present invention. 10...Plug type terminal device, 12...Terminal block for plug (base), 14...Terminal block for plug (
base), 16... vertical rib, 18... horizontal rib, 20... terminal accommodating section, 22......
Blind hole (female threaded hole), 24... Opening, 26...
・・・・・・Plug-in frame terminal, 28 ・・・・Language-like protrusion,
30...Screw, 32...Flat washer, 34
... Spring washer, 36 ... Square eye, 38.
... Receptacle terminal, 40 ... Support trunk,
42... Contact engagement part, 44... Crimp connection part, 46... Partition plate, 48... Opening part, 50... screw.

Claims (1)

[Scope of utility model registration request] A conductive plate material is bent into an L shape, and one part is a screw tightening part and the other part is a plug-in tab. Pairs of plug-in terminals are arranged symmetrically, and the terminals are accommodated with each screw tightening part separated. A terminal block for a plug, which is arranged and fixed on a terminal block having a part, and a receptacle terminal in which one end of a conductive plate material is formed as a contact engagement part and the other end is formed as a crimp connection part. A plug terminal block is provided, which is housed and fixed in pairs in the opening of the terminal block in correspondence with the plug terminals arranged and fixed on the terminal block, and the plug terminal block is arranged and fixed on one side of the bulkhead plate. At the same time, the insertion tab of the plug terminal of the plug terminal block is made to penetrate and protrude through the opening provided in the partition plate, and the insertion tab is received on the other side of the partition plate. A plug-type terminal device characterized in that a plug terminal block is fitted and coupled to a receptacle terminal housed and fixed in an opening of the plug terminal block.