JPH04111403A - Resistance array - Google Patents

Abstract

PURPOSE:To prevent wrong mounting of a resistance array by arraying a pin for common connection at the center and arranging pins for connection at regular intervals on both sides of the pin for common connection so that the resistance array can be mounted in either direction. CONSTITUTION:The main body l of this resistance array contains four resistance elements (r) and pins P1-P4 for connection are planted on the lower surface of the main body 1 on both sides of a pin P0 for common connection planted at the center. One ends of the four elements (r) are commonly connected to the basic end of the pin P0 for common connection after they are commonly connected to each other and the other ends are respectively connected to basic ends of pins P1-P4 for connection. The pins are arrayed at regular intervals (a) in the order of P1, P2, P0, P3, and P4 from the left to the right. Therefore, the pins of this resistance array are arrayed symmetrically to the pin P0 for common connection at the center. Since the one pin for common connection is positioned to the center, the pin for common connection is always inserted into the inserting hole at the center.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a resistor array, and more particularly to a resistor array incorporating a plurality of resistive elements.

[Prior art] Conventionally, in electronic components, space savings and wiring efficiency have been achieved by using a resistor INO, which has multiple built-in resistance elements, in locations where the same resistance value is used in the circuit configuration. The gender is planned.

FIG. 7 is a circuit configuration diagram of the conventional resistor array R. In the figure, r is a resistor element, and there are 4 resistor elements r having the same resistance value.
The four resistive elements r are arranged in parallel, and one end of the four resistive elements r is connected to a common connecting pin P. The other end is connected to the connecting pin P.

-P, is connected to.

FIG. 8 is an external view of this conventional resistor array R. In the figure, 1 is its main body, and this main body 1 has an insulator exposed.
The four resistance elements r explained in FIG. 7 are housed inside.

One end of each of these four resistive elements is reduced to one in the main body 1, and a common connection pin P protrudes outside the main body 1. connected to.

Further, the other ends of each of the four resistance elements r are internally connected to connection pins PI to P4 which respectively protrude 1° outside the main body.

Wj common connection pin P. The external appearance is similar to that of other connection pins P.
1 to P4, a pin mark 2 is attached to the side surface of the main body 1 near the common connection pin P0. and other pins.

[Problems to be Solved by the Invention] However, as shown in FIG. 9, the conventional resistor array R was symmetrical on the left and right with the pin spacing and the insertion hole spacing a being the same. Hole■. -B1・B2
・■,・When inserting into Hl, the resistor array R can also be installed in the opposite direction to the left and right as shown in Figure 10, and there is a problem that the resistor array R may not be noticed by the pin mark 2 and may be accidentally inserted incorrectly. Ta.

The present invention aims to solve such problems.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides the following resistor array.

That is, the present invention has a plurality of built-in resistance elements, each connection pin and one common connection pin protruding from the plurality of resistance elements, and each of these pins is inserted into a corresponding insertion hole of a board. A resistor array insertable into a resistor array, characterized in that the respective connection pins are arranged symmetrically, and the common connection pin is arranged at the center of the symmetrically arranged pins. be.

[Function] In the above configuration, the - common connection pins are arranged at the center position, so when the resistor array is inserted into the board, the common connection pins are always inserted into the center insertion hole.

[Example] Regarding an example of the present invention, how the configuration of the present invention is actually embodied will be described below with reference to the drawings, along with its operation.

FIG. 1 is a circuit configuration diagram of a resistor array R according to an embodiment of the present invention. In the figure, r is a resistor element, and four resistor elements r having the same resistance are arranged in parallel.

One end of the four resistance elements r'r"r"r is combined into one and connected to the common connection pin P0, and the other end is connected to the connection pins P and -P4, respectively.

The common connection pin PO appears at the center of the other four connection pins PI-p<.

FIG. 2 is a perspective view of the same embodiment, and in the figure, 1 is the main body of the resistor array R, and this main body 1 is formed of an insulator.

The four resistive elements r are built into the main body 1, and connection pins P1 to P4 are protruded from the lower part of the main body 1 to the left and right of the common connection pin P0.

The four resistance elements r each have one end connected in common within the main body 1, and are connected to the base end of the common connection pin P0.

Further, the other ends of the four resistance elements r are respectively connected to the base ends of the connection pins P1 to P.

The arrangement of these pins is Pl, B2, Pa' from the left side.
The order is Ps and B4, and the intervals between each pin are equal intervals a.

This resistor array R has - common connection pins P in the arrangement of each pin. is located in the center, and other connecting pins P1 and B2 as well as P and B4 are arranged symmetrically.

Below this resistor array R, there is a board 3 for mounting, and this board 3 has insertion holes 1, B2, and 2.・■、・B
4 are bored in a straight line at equal intervals a, and correspond to each of the pins.

The pins P1, B2, Po, B3, and P correspond to the corresponding insertion holes, B2, and ■.・■, ・B4 can be inserted, so that the resistor array R can be correctly inserted into the board 3.

FIG. 3 is an explanatory diagram for preventing incorrect insertion of the same embodiment, and is an explanatory diagram for a case where the orientation of the resistor array R is inadvertently reversed from left to right with respect to the board 3 for insertion.

In this case, the negative common connection pins P0 are arranged in the center, so even if the resistor array R is inserted in the opposite direction,
The above-mentioned common connection pin P. is always inserted into the central insertion hole tio of the insertion holes of the board 3.

+1-7 and other connecting pins IL to ■4 have the same resistance value r and are all 5 values, so there is compatibility in the circuit. Insert left and right in reverse (
7, there is no problem at all and it will not be installed incorrectly, resulting in a structure that prevents incorrect installation. 9, '541BX
FIGS. 1 to 6 are diagrams showing application examples of the resistor array of the same embodiment, and will explain how the resistor array R is used.

-t Figure 4 shows a display switching circuit of an image forming apparatus.
The resistor array R is indicated by a broken line near the center of the circuit diagram, and each of the four resistor elements r'' forming the resistor array R is shown by a broken line near the center of the circuit diagram.
r"r"r, one end is connected in common (2 to 5V power supply 5 side,
The other ends are respectively connected to a changeover switch 6 called a dip switch and an inverter IC 7 which is an integrated circuit.

Switching switch is for each contact S1, B2, S, ・B
4 and commonly connected to ground 8.

That is, the pin P is connected from the resistor array R to the 5V power source 5 side. is the common connection pin, and the changeover switch 6
Pins P, -P, or other connection pins connected to the side.

Further, the inverter IC7 receives a signal (1 or O) configured by the switching switch 1 at the input terminal B.

-B!・B, ・B, is input from the side, this Beka signal is reversed (O or 1-) in the inverter 7, and output terminal A
. Output to -A1・A,・A, side.

Next, the operation of this circuit will be explained.

First, each contact 81-8 of the changeover switch 6. If it is open as shown in the figure, the 5V of the emphysema is directly passed through each resistor element r of the resistor array R to the Burke IC.
7 input terminal B. -B1・B2・Old example (': Appears and is input as signal 1, respectively.

The inputs of this signal 1 are each inverted to an inverse signal within an inverter IC7 and output to an output terminal A. "At" A2・A
.

Each side is output as a signal O.

Conversely, when the contacts S1, B2, S, and B4 of the changeover switch 6 are closed, the zero level of the ground 8 is the input terminal B of the inverter IC7. −
It appears on the B1, B, and B3 sides and inputs the signal O to each side.

Therefore, the output terminal A of inverter IC7. -A1・
Inverted signals 1 are output to the A2, ^, and sides, respectively.

In this way, each contact S, ・B2・ of the changeover switch 6
By setting S+ and S to either on or off, the resistor array R of the present invention forms a signal of either 1 or 0 and inputs it to the inverter IC7.
C7 can invert and output the signal.

FIG. 5 is a rough and concrete explanatory diagram of an application example of the same embodiment, and in order to avoid redundancy, only the points different from the above-mentioned FIG. 4 will be mainly explained.

First, contact S of changeover switch 6! Also, close B2 and set the other two contacts S3 and S to the open state.

With this set, input terminal Bo- of inverter IC7
B1・B2・B, O1I! are respectively 0-0-1.
A signal like -1 is input, and this input (z) is inverted in the inverter ICT and sent to the output terminal A. -A,
- Outputs 1, 1, 0, 0 signals to A2 and A3 sides.

Figure 6 shows the output signals of the display switching circuit and the correspondence table for each language, and shows the output terminals A, ・A1, and A2 of the inverter JC7.
・This is a correspondence table between the signals output to A and each language.

That is, if the output signal is 1.0.0.0, it will be displayed in Japanese, and in the case shown in FIG. 5, it will be 1.1.0.0 and displayed in English.

Therefore, when the present invention is applied to an image forming apparatus, the apparatus structure may be completely the same, and the Japanese language display mode may be set respectively.

In other words, for products sold in Japan, the selector switch 6 should be set so that the output signal of the inverter IC 7 becomes 1, 0, 0, 0. For an image forming apparatus for export to a foreign country, if the changeover switch 6 is set so that the inverter IC 7 output signal is 1, 1, 0, 0, the display will be in English mode and the li
Ru.

Furthermore, for those destined for export to China, the output signals of inverter IC7 should be 1, 0, 1, 0.
It is sufficient to set the changeover switch 6.

As described above, resistor arrays have an extremely wide range of applications and are useful, such as being used in display devices that can flexibly respond to diversification and internationalization.

As described above with respect to the embodiments, the present invention is a resistor tray containing a plurality of resistor elements, each connecting pin corresponding to one end of each resistor element, and one common connection with the other end commonly grouped together. The resistor array R has compatibility in the left and right directions, with the common connection pin at the center and the connection pins arranged at equal intervals on the left and right. Since it can be attached in either the left or right direction, incorrect attachment can be prevented.

Because it is placed in the center of each pin array, when inserting the resistor array into the board, the common connection pin is always inserted correctly into the center insertion hole, regardless of whether the resistor array is in the right or wrong direction. There is no risk of erroneous insertion with each connection pin, and there are effects such as being able to prevent erroneous circuit connections.

[Brief explanation of drawings]

Fig. 1 is a circuit configuration diagram of a resistor array R according to an embodiment of the present invention, Fig. 2 is a perspective view of the embodiment, Fig. 3 is an explanatory diagram for preventing incorrect attachment of the embodiment, and Figs. 4 to 6. The figure is an explanatory diagram of an application example of the same embodiment, and FIGS. 7 to 10 are explanatory diagrams of a conventional example. DESCRIPTION OF SYMBOLS 1... Main body, 3... Board, Pa... Common connection pin, P1-P4... Connection pin, r... Resistance element, R... Resistance array. [Effect of the invention]

Claims (1)

[Claims] A resistor that has multiple built-in resistive elements, each connecting pin and one common connecting pin protruding from the multiple resistive elements, and each of these pins can be inserted into a corresponding insertion hole on a board. 1. A resistor array, wherein the respective connection pins are arranged symmetrically, and the common connection pin is arranged at the center of the symmetrically arranged pins.