JPH097664A - Line wire terminal block - Google Patents

Abstract

PURPOSE: To attain the improvement in efficiency and space saving of internal wiring work commonly, regardless of whether the inputted and outputted voltage signal is digital or analog. CONSTITUTION: A line wire terminal block 10 is formed of a terminal block body 1 having a bulkhead 1a line on the upper stage side and a groove-like recessed part 1b on the lower stage side, and each terminal metal fitting 2, 3 arranged in two vertical stages. The terminal metal fittings 3 have a common conductor part 3a, tongue piece tubs 3a protruded in a line on external line side, and a terminal part 3c protruded on the reverse side which are integrally molded, and the tubs 3b are situated in the inner part of the recessed part 1b and exposed. When the number of voltage signals is changed on the basis of a specification change, the portion of a change such as addition and reduction of the internal wiring work related to the line wire terminal base can be substantially halved by the common conductor part 3a of the terminal metal fittings 3, compared with a conventional case. Since the terminal metal fittings on the lower stage side are inserted and connected through each tub 3a, the space can be saved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external line terminal block which is commonly used for inputting / outputting digital voltage signals and analog voltage signals, and which particularly improves efficiency of internal wiring work and saves space. Here, the notation of “digital voltage signal” will be described. Originally, the digital signal means only the voltage type, so before the "signal", the "voltage" together with the "digital"
Need not be described again. However, since the analog signal here is limited to only the voltage type, in order to correspond to this, the same expression format is adopted to make it a digital voltage signal (hereinafter, this applies).

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIG. FIG. 7 is a schematic diagram showing a connection when a digital voltage signal is output to the outside, and is shown as a typical example. The conventional external line terminal block 21 includes a terminal block body (not shown) and terminal fittings 22 and 23. That is, each of the terminal fittings 22 and 23 is embedded in the terminal block body with both ends thereof exposed, and arranged in the lateral direction with the pair of members facing each other in the upper and lower stages. The terminal fittings 22, 23 are
In some cases, the cells are arranged in a row instead of two rows above and below.
In the figure, each terminal metal fitting 22 is replaced by a corresponding terminal metal fitting 2
3, the row of the terminal fittings 22 and the row of the terminal fittings 23 are arranged vertically in two stages by being shifted upward by about a half pitch with respect to FIG. Although the terminal fittings 22 and 23 are the same parts, each of the upper terminal fittings 22 is connected via the contact portions 7A, 7B, 7C ...
The terminal metal fittings 23 on the lower side are connected to the 0V potential line. In addition, each terminal fitting 2
The circles on both ends of 2, 23 are
Indicates that external wiring is connected. In addition, each contact portion 7A, 7
B, 7C ... Are included in the control circuit 11 of the electronic device, and O
Depending on the contact state of N, OFF, each terminal fitting 22, 23
To 24V and 0V digital voltage signals are output to the outside through the corresponding external cable 5. That is, each external cable 5 has two crimp terminals 9 attached to the terminal portion.
The terminal portions of are fixed and connected to the outer wire side end portions of the respective terminal fittings 22 and 23 with terminal screws.

[0003]

In the wiring of the conventional example, the extension-side end of each terminal fitting 23 needs to be connected to the 0V power supply line, so that the internal connection line is the control circuit of the electronic device. Corresponding contact parts 7A, 7B, 7C included in 11
When there is a change in the number of ..., there is a need to change it accordingly. In other words, depending on the specifications, changes such as addition or reduction of wiring work related to extension lines may occur, and the efficiency of internal wiring work may be reduced accordingly. there were. Also, each terminal fitting 2
When 2 and 23 are arranged in two steps, it is necessary to slightly shift the positions to facilitate wiring work, which hinders space saving. It should be noted that arranging the terminal fittings in a row should be avoided as much as possible from the viewpoint of space saving unless there is a technical reason.

The problem to be solved by the present invention is to solve the above problems of the prior art, and to provide an external wire terminal block which improves the efficiency of internal wiring work and saves space.

[0005]

SUMMARY OF THE INVENTION According to the present invention, two terminal rows, one and the other, are arranged in parallel so that the ends on the outside line side of the terminals belonging to each other are made to correspond to each other, and one of the terminals is arranged. The row is formed by arranging a plurality of rod-shaped individual terminals whose both ends are the outer wire side end and the inner wire side end in a direction perpendicular to the respective longitudinal directions, and the other terminal row is the outer wire side end. , Which are formed as plug-in contacts and are located in recesses engraved on the outer wire side end surface of the terminal block body, and are commonly connected to the ends on the opposite side to the outer wire sides. It is composed of a conductor portion.

Here, the individual terminals of one of the terminal rows are in the shape of a strip plate, and the other terminal row is in the form of a plate formed by integrally molding a plurality of strip plate-shaped individual terminals and a strip plate-shaped common conductor portion. It is preferably a member.

[0007]

According to the present invention, in both cases of inputting and outputting a digital voltage signal or an analog voltage signal, the external line side end of each other terminal is a plug-in contactor (tongue tab). An external cable in which a plug-in contactor (a sheath-shaped receptacle that fits in a tab) is attached to a terminal is used. Moreover, since the other terminals are commonly connected via the common conductors that are connected to each other, when the number of voltage signals is changed in either digital or analog, the addition / reduction of internal wiring work for the external line terminal block etc. The change of is almost half.

Further, according to the present invention, when the analog voltage signal is input / output and the signal cable is grounded at the same time, the input signal external lines corresponding to two adjacent terminals of one terminal row are connected, The shield of the external cable can be connected to one terminal of the other terminal row and grounded via the integrated common conductor portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an outside wire terminal block according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view including an external cable, and FIG. 1B is a perspective view of a terminal fitting on a lower stage side, regarding an embodiment. In FIG. 1 (a), an external line terminal block 10 is composed of a terminal block body 1, a row of upper and lower terminal fittings 2 and a terminal fitting 3. Here, the terminal block body 1 is a molded block of an insulating material, and has a row of partition walls 1a on the upper stage side and a groove-shaped recess 1b which is carved on the right end surface on the lower stage side and extends in the longitudinal direction. The terminal fittings 2 are strip-shaped components, which are provided with terminal screws 2a for wiring connection at both ends, are arranged so as to be placed between adjacent partition walls 1a, and are embedded with both ends exposed. Although the detailed structure of the terminal fitting 3 will be described later with reference to FIG. 1B, the tab 3b vertically facing the terminal fitting 2 is embedded in the recess 1b. Further, the external cable 5 is provided with crimp terminals 9 and 4 at its terminal portion. The crimp terminal 9 includes a crimp portion 9a and a terminal portion 9b that is screwed to the terminal fitting 2, and the crimp terminal 4 includes a crimp portion 4a and a sheath-shaped receptacle 4b that fits into the tab 3b of the terminal fitting 3. Become.

In FIG. 1 (b), the terminal fitting 3 is connected to a strip-shaped common conductor portion 3a, a tongue-shaped tab 3b which is arranged side by side on the right side thereof, and a left side of the common conductor portion 3a. It is a plate-shaped member integrally press-molded with a terminal portion 3c having a screw hole for an end. In FIG. 1 (a), the tab 3b is exposed inside the concave portion 1b of the terminal block body 1, and the terminal portion 3c is hidden and invisible, but is exposed on the other side of the terminal block body 1.

FIG. 2 is a schematic diagram showing the connection of the embodiment when outputting a digital voltage signal. In the figure, an external wire terminal block 10 according to an embodiment includes a row of terminal fittings 2 and a pair of terminal fittings 3 which are vertically arranged in two steps with respect to a terminal block body (not shown). In the figure, the terminal fittings 2 are shifted upward from the terminal fittings 3 by about half a pitch to show that the rows of the terminal fittings 2 and the terminal fittings 3 are arranged in upper and lower two stages. There is. Each of the terminal fittings 2 on the upper side is connected to the 24V potential line via the contact portions 7A, 7B, 7C, ...
Is connected to the 0 V potential line by a terminal screw marked with a circle at the terminal portion 3c. Here, each of the contact portions 7A ... Is included in the control circuit 11 of the electronic device, and digital voltage signals of 24V and 0V are indicated by arrows via the terminal fittings 2 and 3 according to the ON and OFF contact states. To output to the outside. By the way, the external cable 5 has two crimp terminals 4 and 9 attached to its end portion (see FIG. 1 (a)). Here, when the number of digital voltage signals is changed based on the specification change, the addition / reduction of the internal wiring work for the external line terminal block is almost half that of the conventional example shown in FIG. Further, the pair of terminal fittings 2 and 3 for the digital voltage signal to be output are arranged side by side so as to face each other in the upper and lower stages, and the terminal fitting 2 on the upper stage side is connected by a terminal screw, and the lower stage is connected. The terminal fitting 3 on the side is inserted through each tab 3b.
Since the connection is made, space can be saved and the external line can be surely and quickly connected.

FIG. 3 is a schematic diagram showing the connection of the embodiment when a digital voltage signal is input. The difference between this figure and Fig. 2 is that the digital voltage signal is input from the outside as shown by the arrow and the part that receives it is indicated by a circle in the circle.
Each relay coil portion 8A, 8B, which is indicated by marking C,
8C ... The external cable 5 for input signals is the same as in FIG. The operation is the same as that in FIG. 2, and thus the description is omitted.

FIG. 4 is a schematic diagram showing the connection of the embodiment when outputting an analog voltage signal. In the figure, the generator of the analog voltage in the device is the distributor 13
A, 13B, 13C ..., and the voltage fluctuation range is 1 to 5
V. Each of the terminal fittings 2 on the upper side is connected to one of the output terminals of each of the distributors 13A, ... The other output terminal of each distributor 13A ... Is connected to the 0V reference potential line 16, and
It is connected to the terminal portion 3c of the terminal fitting 3 on the lower side by means of terminal screws marked with a circle. Here, the external cable 5 that outputs each analog voltage signal (1 to 5 V) to the outside is the same as that in FIG.

FIG. 5 is a schematic diagram showing the connection of the embodiment when inputting an analog voltage signal. This drawing is different from FIG. 4 described above in that instead of the respective distributors 13A ..., the respective converters 15A .. Each converter 15A ... Inputs an analog voltage signal with a fluctuation range of 1 to 5 V from the outside and converts it into a predetermined signal,
The data is transmitted to another block in the device (not shown). Here, the external cable 5 for inputting each analog voltage signal (1 to 5 V) from the outside is the same as that in FIG.

FIG. 6 is a schematic diagram showing the connection of the embodiment when the analog voltage signal is shielded and input. In the figure, an analog voltage signal is externally input to each converter 17A, 17B, 17C, ... In the device via an external cable 20, and in order to prevent the input analog voltage signal from electromagnetic influence, The cable 20 is provided with a shield 19 so as to surround the signal line. Therefore, the two crimp terminals 9 relating to the analog voltage signal in the external cable 20 have the two adjacent crimp terminals 2 on the upper side.
In addition, the crimp terminal 4 related to the shield 19 is on the lower side, and the tab 3 of the terminal fitting 3 is located between the two terminal fittings 2.
b. In addition, the terminal portion 3 of the terminal fitting 3
c is grounded and connected to the ground bar 17. Therefore,
The shield 19 is commonly connected to the ground bar 17 via the crimp terminal 4 and the terminal fitting 3, and is connected to the ground bar 17 each time the external cable 20 is added or reduced based on the specifications. There is no need to add or reduce internal wiring. Although not shown here, even when the analog voltage signal is shielded and output, if a transmitter is used instead of the converter, the same connection schematic diagram is shown.

[0016]

According to the present invention, the following excellent effects can be expected. (1) When a digital voltage signal or an analog voltage signal is input / output, it is possible to improve the efficiency of internal wiring work related to the external terminal block and save space. The reason is that for improving the efficiency of the internal wiring work, each of the other terminals is connected in common through the connecting common conductor section, and when the number of voltage signals changes, the internal wiring work for the external line terminal block This is because the amount of changes such as additions and reductions can be reduced to almost half, and space saving can be achieved by comparing the two ends of the screw connection as in the conventional example with each end of the other terminal row on the external wire side. Is a plug-in contactor. (2) Furthermore, at the same time when the analog voltage signal is input / output,
Even when the signal cable is grounded by shield, the external wiring terminal block can be used to simplify the internal wiring work for grounding. That is, the corresponding input signal external wire is connected to two adjacent terminals of one terminal row, the shield of the external cable is connected to one terminal of the other terminal row, and the integrated common conductor part This is because it can be grounded via. (3) One terminal row and the other terminal row are arranged in parallel so that the external wire end portions of the terminals belonging to each other are aligned in parallel, so that the external wire end portions of each terminal are visually distinguished. Therefore, the external line connection related to the signal can be made accurately and quickly. (4) Since the individual terminals and the common conductor portion of the other terminal row are integrally formed with, for example, a punching die of a press, the production is easy and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment according to the present invention, in which (a) is a perspective view including an external cable, and (b) is a perspective view of a lower terminal fitting.

FIG. 2 is a schematic diagram showing a connection of an embodiment when outputting a digital voltage signal.

FIG. 3 is a schematic diagram showing a connection of an embodiment when a digital voltage signal is input.

FIG. 4 is a schematic diagram showing the connection of the embodiment when outputting an analog voltage signal.

FIG. 5 is a schematic diagram showing the connection of the embodiment when inputting an analog voltage signal.

FIG. 6 is a schematic diagram showing the connection of the embodiment when shielded and inputting an analog voltage signal.

FIG. 7 is a schematic diagram showing a connection of a conventional example when outputting a digital voltage signal.

[Explanation of symbols]

 1 Terminal block body 1a Partition wall 1b Recess 2 Terminal fitting 2a Terminal screw 3 Terminal fitting 3a Common conductor part 3b Tab 3c Terminal part 4 Crimp terminal 4a Crimp part 4b Receptacle 5 Outer cable 7A, 7B, 7C Contact part 8 Relay coil part 9 Crimp terminal 9a Crimp section 9b Terminal section 10 External wire terminal block 11, 12 Control circuit 13 Distributor 14 Converter 15 Transmitter 16 Reference potential line 17 Converter 18 Ground bar 19 Shield 20 External cable

Claims (2)

[Claims] 1. Two terminal rows, one and the other, are arranged in parallel so that the terminals on the outside line side of the respective terminals correspond to each other, and one terminal row is provided with the terminals on the outside line side and the inside line. A plurality of rod-shaped individual terminals having side end portions as both end portions are arranged side by side in a direction perpendicular to their respective longitudinal directions, and the other terminal row has outer wire side end portions formed as plug-in contacts. It is characterized by comprising a plurality of rod-shaped individual terminals located in a concave portion engraved on the outer wire side end surface of the terminal block body, and a common conductor portion commonly connected to the respective end portions on the opposite side to the outer wire side. External line terminal block. 2. The terminal block according to claim 1, wherein one terminal row has a strip plate-shaped individual terminal, and the other terminal row has a plurality of strip plate-shaped individual terminals and a strip plate shape in common. An outside wire terminal block, which is a plate-shaped member integrally formed with a conductor portion.