JP2910479B2 - 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 a signal line to a field device in an industrial control device or the like.
In particular, it relates to an improvement that can be manufactured at low cost by promoting the sharing of parts.

[0002]

2. Description of the Related Art The present applicant has disclosed, for example, Japanese Utility Model Laid-Open No. 56-154.
No. 778 and Japanese Utility Model Laid-Open No. 63-70673 propose terminal mechanisms. Various types of terminal blocks are prepared according to the signal lines to be connected. For example, when handling a contact signal, two terminals of a plus terminal and a minus terminal are assigned as one set for one input / output.
In the case of a thermocouple input, a circuit for compensating for a cold junction is additionally provided. If you want to input more signals,
The negative terminal is shared.

[0003]

However, since terminal blocks are separately designed to cope with various input / output signals, a large number of molds for resin molding are required, and the initial investment in manufacturing is reduced. As the number of parts increases, the number of parts increases, and there is a problem that parts management becomes complicated. In addition,
As disclosed in Japanese Patent No. 91169, a light emitting element is provided for each terminal to display the state of a signal to be handled. However, it is more difficult to prepare such a display device for display. There was a problem to worsen. An object of the present invention is to solve such a problem and to provide a terminal block having an optimal terminal group according to various signal lines, and having a small number of parts and a small number of mold dies.

[0004]

Means for Solving the Problems Claims for solving the above problems
Item 1 is a terminal board 10 in which a plurality of terminals to which signal lines are connected are arranged in a plurality of rows, and a back board 2 having a pattern connected to each terminal provided on the bottom surface of the terminal board.
0, the terminal block has a ready display chamber 16 and a substrate accommodating chamber 18 in the column direction of the terminal arrangement. In the ready display chamber, the operation state of the terminal board mounted on the backboard is determined. The light emitted from the light emitting element 22 to be displayed is guided to the upper surface of the terminal block, and the display substrate 40 on which the light emitting element 42 that turns on and off according to the signal state of each terminal is accommodated. the separated light guide portion 44 for displaying separated for each light-emitting element light a terminal block upper surface to the column direction of the terminal arrangement which is provided on the board housing chamber, the
The signal status of each terminal of the terminal block is indicated by a light emitting element.
It is characterized in that that. Claim 2 for solving the above problem
The terminal block described has multiple rows of terminals connected to signal lines
Terminal block 10 and each of the terminals provided on the bottom surface of the terminal block.
A back board 20 having a pattern connected to the terminal;
Wherein the terminal blocks are arranged in a row in a terminal arrangement.
A ready display room 16 and a substrate accommodation room 18
In the display room, the terminal block mounted on the backboard
The light emitted by the light emitting element 22 indicating the operation state of the
Lead to the top of the table and make thermal contact with the terminal to which the thermocouple is connected
Before the temperature compensation unit 60 for measuring the temperature of the terminal.
The thermocouple input signal of the terminal block is provided in the board accommodation room.
It is characterized by a degree compensation.

[0005]

According to the first aspect of the present invention, the ready display chamber displays the operation state of the terminal block. Since any type of terminal block is required, the light emitting element mounted on the backboard in advance is required. Of light. Board housing chamber in a region which is optionally utilized in accordance with the type of the terminal block, the display substrate Ru housed the kind that displays the status of each terminal of the terminal block. display
On the substrate, the lighting state of each light emitting element by the separate light guide
Can be displayed separately so that the signal status of individual terminals can be visually checked.
The property becomes good. According to claim 2, the terminal block has a thermocouple input.
The temperature compensation unit is installed in the substrate chamber.
You. The terminal block handles general analog signals, and each terminal
When the status is set to the final display, the substrate accommodating chamber is empty.
You.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. 1A and 1B are configuration diagrams showing one embodiment of the present invention, wherein FIG. 1A is a top view and FIG. 1B is a side view. In the figure, terminal block 1
Numeral 0 denotes a lower terminal 1 formed of an insulating material such as resin.
Seventeen terminals are provided in each of the first and upper terminals 12. The ready display chamber 16 and the substrate storage chamber 18 divided into four chambers are arranged in a row parallel to the lower terminal 11 and the upper terminal 12, and each chamber of the substrate storage chamber 18 is separated by the substrate guide 19. . The back board 20 is provided on the bottom surface of the terminal block 10 and has a wiring pattern connected to each terminal. The connector 30 is provided on the bottom side of the back board 20 and transmits signals of signal lines connected to each terminal by a connector (not shown) connected to an external device. The display substrate 40 is housed in the substrate housing chamber 18, and here, the one on which the light emitting element 42 is mounted is shown. However, when various extended functions such as a temperature compensation unit are added, Is mounted.

FIGS. 2A and 2B are explanatory views of an extended function mounted in the substrate accommodating chamber. FIG. 2A shows a display function, and FIG. 2B shows a case of a temperature compensation unit. In the case of a display function, a display substrate 40 is used. The display substrate 40 has light emitting elements 42 arranged in four sets corresponding to the substrate accommodating chambers 18 divided into four chambers, and corresponds to the substrate guide 19 between the light emitting elements 42 of each set. Gaps are provided. The board guide 19 also has a function of restraining the display board 40 at a predetermined position. The separation light guide section 44 is a light-shielding resin-molded member, which is mounted on the upper surface of the substrate guide 19 and has a light guide hole 4.
5 accommodates each light emitting element 42. The display sheet 52 is affixed to a cover 50 attached to the upper surface of the terminal block, and displays a terminal number corresponding to each light emitting element 42 turned on / off by the light guide hole 45.

The temperature compensating unit 60 measures the temperature by contacting the terminal, and is required when the temperature is accurately measured by a thermocouple. Here, one unit is composed of four terminals to be accommodated in each of the substrate accommodation chambers 18. As such a temperature compensating unit 60, for example, the one disclosed in Japanese Utility Model Application No. 3-85114 proposed by the present inventors may be used. The cover sheet 68 is attached to the terminal-side surface of the temperature compensation unit 60. A window is formed on the surface facing each terminal, and the temperature sensor is pressed. The ready sheet 54 is affixed to the cover 50 attached to the upper surface of the terminal block and corresponds to the display in the ready display room 16, and there is no special display for the portion of the substrate storage room 18.

FIG. 3 is a sectional view of a terminal block having a display function. Although the respective chambers of the lower terminal 11 and the upper terminal 12 are not shown in the terminal structure, for example, a terminal having a screw drop prevention mechanism disclosed in Japanese Utility Model Laid-Open No. 4-102568 proposed by the present inventor. It is good to use. The main body 13 is a main structural material of the terminal block 10 and is formed of resin. Back plate 1
A cover 4 covers the back board 20 and is mounted on the bottom surface of the terminal block 10.

The connection cable 22 connects the back board 20 and the display substrate 40, and supplies a signal for controlling lighting of each lighting element 42 from the back board 20 side.
The light-emitting element 42 that is bent and mounted in the direction of the end surface of the display substrate 40 is housed in the separation light guide unit 44. The cover 50 opens and closes around a hinge portion 51 provided on the terminal block 10. Opening the cover 50 facilitates the work of connecting signal lines to each terminal, and closing the cover 50 allows the display sheet 52 to separate and guide the light. The operator can easily determine which terminal of each light emitting element 42 is displayed on the section 44.

FIG. 4 is a sectional view of a terminal block having a temperature compensation unit 60. The details of the temperature compensation unit 60 will be described. The temperature compensation unit 60 has a case portion 61 having an outer shape suitable for being inserted into the substrate accommodating chamber 18, and a printed circuit board 62 is accommodated therein. The spring 63 is mounted between the case section 61 and the printed board 62, and presses the printed board 62 toward the terminal to bring the temperature sensor 64 into contact with the terminal. The holding bracket 65 is entirely fixed to the printed circuit board 62, and the temperature sensor 64 is integrally attached thereto. The cable 66 converts the signal measured by the temperature sensor 64 into an electric signal on the printed circuit board 62 and sends the electric signal to the backboard 20 via the compensation connector 67. Here, the connection operation of each signal line is performed smoothly by using a flexible cable for the cable 66. Since the temperature compensation of the thermocouple is a basic knowledge of measurement engineering, the description is omitted.

FIG. 5 is a cross-sectional view for explaining the details of the ready display chamber 16, and is partially cut away. A light emitting element 22 is mounted on an end of the back board 20, and the operating state of the terminal block 10 is displayed by the light emitting element 22. A light guide 24 is accommodated in the ready display room 16, and guides light emitted from the light emitting element 22 to the RDY section of the display sheet 52.
This function is a necessary function of the terminal block, and is provided commonly to various terminal blocks.

FIGS. 6A and 6B are top views showing a state in which the cover 50 display sheet is adhered. FIG.
(C) shows the display of only the ready signal. When the display function has 16 points, the corresponding terminals of the lower terminal 11 and the upper terminal 12 are used as a pair of a plus terminal and a minus terminal. Therefore, the display of the contact signal is also performed using the signals of the terminals that form a group. On the display sheet 52, the ready signal RDY and the terminal numbers 1 to 16 of the respective contacts are displayed to make it easy to visually recognize which terminal the corresponding light emitting element 42 accommodated in the substrate accommodation chamber 18 is.

When the number of display functions is 32, independent signal lines are connected to the lower terminal 11 and the upper terminal 12, respectively.
The surplus terminals in the lower terminal 11 and the upper terminal 12 are used as respective negative terminals. On the display sheet 52, the ready signal RDY and the terminal numbers 1 to 32 of the respective contacts are displayed. Next, when the temperature compensation unit 60 is accommodated in the substrate accommodating chamber 18 or when the display substrate 40 is not mounted, the ready sheet 54 for displaying only the ready signal RDY among the display sheets 52 is attached. . Since the ready signal RDY is necessary for all types of terminal blocks, the operation state of the terminal blocks can be confirmed by this.

[0015]

As described above, according to the first aspect of the present invention ,
According to the terminal block, the operation state of the terminal block is displayed in the ready display room, so that the operation states of all types of terminal blocks can be confirmed, the common use of the terminal block 10 can be promoted, and the number of molds can be reduced. It has the effect of saying. Also, add
The display board 40 for displaying the state of each terminal of the sub-unit is accommodated.
Then, the lighting state is divided for each light emitting element by the separated light guide section.
Display, so that the visibility of the signal status of individual terminals is good.
It will be good. According to the second aspect, the temperature compensation unit 60 is mounted in the substrate accommodating chamber. As described above, by accommodating units having optional functions corresponding to the types of signal lines in the substrate accommodating chamber, various functions can be realized with a small number of components.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram of an extended function installed in a substrate storage chamber.

FIG. 3 is a sectional view of a terminal block having a display function.

FIG. 4 is a sectional view of a terminal block having a temperature compensation unit 60.

FIG. 5 is a sectional view illustrating details of a ready display room 16;

FIG. 6 is a top view of a state where a cover 50 display sheet is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Terminal block 16 Ready display room 18 Board accommodation room 20 Backboard 30 Connector 40 Display board 50 Cover 52 Display sheet 60 Temperature compensation unit

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-290079 (JP, A) JP-A-60-148074 (JP, A) Fully open 1987-102279 (JP, U) Really open 1988 191579 (JP, U) Japanese Utility Model Application No. 54-161895 (JP, U) Japanese Utility Model Application No. 58-4865 (JP, U) Japanese Utility Model Application No. 5-36329 (JP, U) (58) Field surveyed (Int. ⁶ , DB name) H01R 9/00 H01R 9/15-9/28 G01K 7/12 G05B 19/05

Claims (2)

(57) [Claims] 1. A terminal board (10) in which terminals to which signal lines are connected are arranged in a plurality of rows, and a back board (20) having a pattern connected to each terminal provided on a bottom surface of the terminal board. The terminal block has a ready display chamber (16) in the column direction of the terminal arrangement.
And a substrate accommodating chamber (18). In the ready display chamber, light emitted from the light emitting element (22) for displaying the operation state of the terminal block mounted on the backboard is guided to the upper surface of the terminal block. A display substrate (40) on which a light emitting element (42) that is turned on and off according to the signal state of the terminal is accommodated, and the light emitted from the light emitting element is emitted from the upper surface of the terminal block in the column direction of the terminal arrangement. A separate light guide section (44) for separating and displaying each light emitting element is provided in the substrate accommodating chamber, and the signal state of each terminal of the terminal block is displayed by the light emitting element.
Terminal block, characterized in that the Shimesuru. 2. A terminal board (10) in which terminals connected to signal lines are arranged in a plurality of rows, and a back board (20) having a pattern connected to each terminal provided on a bottom surface of the terminal board. The terminal block has a ready display chamber (16) in the column direction of the terminal arrangement.
And a substrate accommodating chamber (18). In the ready display chamber, light emitted from the light emitting element (22) for displaying the operation state of the terminal block mounted on the backboard is guided to the upper surface of the terminal block, and a thermocouple is provided. A temperature compensating unit (60) for measuring the temperature of the terminal by being in thermal contact with the terminal to be connected to the substrate accommodating chamber, and temperature-compensating the thermocouple input signal of the terminal block. Terminal block.