KR910005400Y1 - Conductor formed potentiometer on resistance - Google Patents

Abstract

No content.

Description

Potentiometer with a conductor line formed on a resistance path

1 is a plan view of the present invention.

2 is a front configuration diagram of FIG.

3 is a plan view of a conventional one.

4 is a front configuration diagram of FIG.

* Explanation of symbols for main parts of the drawings

2, 2 ': Conductor pad 3: Resistance track

5: conductor line

The present invention converts a positional change amount into a change amount therein and detects a fuel amount of a vehicle, or in a potentiometer that detects various physical positions, and a conductor line on a resistance path of a potentiometer. The present invention relates to the improvement of potentiometers in which conductor lines are formed. In particular, conductor lines are formed to reduce contact resistance of ruthenium dioxide (Ru O ₂ ) -based resistance tracks formed on alumina (Al ₂ O ₃ ) ceramic substrates. However, it is intended to provide a potentiometer formed in a pattern in which the resistance track is gradually reduced so that the resistance value increases with the earth's function according to the moving angle of the probe.

In general, the potentiometer uses a principle that draws a predetermined voltage across both ends of the resistive medium, draws a voltage divided by the middle tap, and converts a physical change into a change in electrical resistance through a change in the resistance value. Widely used to operate the instrument for displaying the physical quantity, the existing potentiometers which perform the functions as described above are also shown in u, s PATENT 4,318,075, i.e., as shown in the third degree, alumina oxide (Al ₂ O ₃ A plurality of conductor lines 11 are formed adjacent to each other on the cera film substrate 10 of the C), and a resistance track 12 of a resist composition is formed on a part of the conductor line 11, or only outside the conductor line 11. Formed and probed onto the resistance track 12, each of these problems was inherent.

In the former case, when probing on a resistance track, a large contact resistance is required and a strong pressure is required, and thus the performance of the potentiometer is degraded because the probe cannot be easily moved due to the change in physical position. In the latter case, when the comb-patterned conductor line is formed outside the resistance track, the space required for conductor line formation is required separately. Problem occurred (that is, the distribution of resistance values is wide).

Therefore, the present invention is to improve the disadvantage of the existing potentiometer to solve the above problems.

Its main feature is to form a pattern that gradually reduces the width of the resistance track, which causes the resistance value to increase exponentially with the angle of movement of the probe. When described with reference to the accompanying drawings, as follows.

1 is a planar configuration diagram of the present invention, which has a predetermined resistance value between the conductive pads 2 and 2 on the left and right sides, which can be soldered on an alumina oxide (Al ₂ O ₃ ) ceramic substrate 1. The track 3 is patterned, and a plurality of conductor lines 5 having a sliding contact track of the probe 4 described above are patterned at a small equal interval, while the conductor lines 5 are curved. (Curve line), the right side is narrow and the left side is wide patterned, the lower end of the secondary resistance (6) for adjusting the resistance value is formed, the oxidation prevention on the substrate (1) except the conductor line (5) Insulation coating is applied.

The resistive track 3 and the conductor line 5 of the present invention configured as described above are patterned on a substrate 1 with a thin film, and the probe 4 rotates and the conductor line 5 moves according to a change in a certain physical quantity. The physical quantity is converted into a resistance value between the contact point of the probe moving along the contact track per slice and the conductive pad 2 ', thereby converting the physical position change into an electrical change.

In addition, the resistance value is set evenly and accurately between the plurality of conductor lines 5 patterned at a small equal interval, so that accurate measurement results can be obtained, and pattern processing is performed on the substrate 1 in the form of a thick film. In addition, since the substrate 1 is a ceramic material of alumina oxide (Al ₂ O ₃ ), the substrate 1 is excellent in durability, and thus the reliability of the substrate 1 can be guaranteed because it is not worn or affected by the rotational contact of the probe 4.

Since the present invention does not need to form a conductor line outside the resistance track, it is possible to reduce the size of the potentiometer, and the resistance value depends on the angle of the probe moving on the plurality of conductor lines having the sliding contact track. It increases exponentially and forms a conductor line on the resistance track, so that the distribution of resistance values according to the conductor thickness is stabilized during manufacturing, and it is a very practical design that can perform the function of potentiometer perfectly.

Claims (1)

In an alumina oxide (Al ₂ O ₃ ) ceramic substrate 1 having solderable conductive pads 2 and 2 ′ formed on the left and right sides thereof, a resistance track having a predetermined resistance value on the ceramic substrate 1 ( 3) is patterned, and a plurality of conductor lines 5 having a sliding contact track of the probe 4 described above are patterned at a small equal interval, but the conductor lines 5 are formed as curved lines. Potentiometer that forms a conductor line on a resistance path, characterized in that the right side is narrow and the left side is patterned broadly.