JPH0733182Y2 - Magnetic sensor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a magnetic sensor, and more particularly to a magnetic sensor having a plurality of ferromagnetic thin film resistance elements on an insulating substrate.

(Prior Art) Usually, in a ferromagnetic thin film resistance element for a magnetic sensor, as shown in, for example, Japanese Patent Publication No. 54-41335, resistance elements are connected in series on a substrate, and its output terminal is connected via a connecting lead wire. It is electrically connected to the FPC wiring copper by soldering.

Further, another conventional ferromagnetic thin film resistance element for a magnetic sensor is the third one.
As shown in the figure, 4 formed on the substrate 1 by a ferromagnetic thin film
When connecting the magnetoresistive effect elements 2 to the bridge,
The terminal 3 of the magnetoresistive element is 3-
1, 3-2, 3-3, 3-4, 3-5, 3-6 are formed, and 3-2 and 3-3 are included in the above 6 terminals.
, 3-5 and 3-6 are arranged close to each other, and 5-2 of the wiring copper 5 of the FPC 4 adjacent to the external circuit is connected to terminals 3-2 and 3
It is arranged so as to straddle -3, and 5-4 has terminals 3-5 and 3
It is arranged so as to straddle −6, and the wiring copper 5 and the terminal 3 are soldered.
And are connected.

That is, the wiring copper 5-2 and the wiring copper 5-4 are connected at the same time as the adjacent terminals connected to each other to form a bridge and are connected to an external circuit.

(Problems to be solved by the invention) However, with the configuration shown in FIG. 3, when connecting the wiring copper 5 of the FPC 4 to the terminal, the wiring copper 5-2 and 5-4 are connected to the terminal 3- 2 and 3-3 and 3-5 and 3-6 must be arranged and soldered so as to overlap with each other, but as shown in FIG. 4, the positions of the wiring coppers 5-2 and 5-4 are right. When the position is shifted to, the terminals 3-3 and 3-6 only overlap and the terminals 3-2 and 3-5 do not overlap, so that a bridge cannot be formed. As described above, there is a problem that the yield of products is low because the tolerance value of the error in the relational position between the terminal and the wiring copper is small and it is difficult to keep the relational position within the tolerance value.

The present invention is intended to improve the reliability deterioration of these FPC connections and to easily realize a highly reliable connection without particularly tightening the dimensional accuracy.

(Means for Solving the Problems) A magnetic sensor according to the present invention is a magnetic sensor having a plurality of ferromagnetic thin film resistance elements on an insulating substrate, wherein lead wires for connecting output terminals adjacent to each other of the resistance elements are provided. A zigzag pattern, such as a comb shape that interleaves with each other, is used, and the connection of the wiring copper to this adjacent terminal is ensured.

(Function) Since the output terminals of the magnetic sensor of the present invention have a zigzag pattern such as a comb shape in which the output terminals are interdigitated with each other, the output terminals and the wiring of the FPC are always connected to each other even if the relative position dimensions deviate to the left or right. .

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In the present invention, as shown in FIG. 1, the output terminals of the resistance element for the magnetic sensor are arranged adjacent to each other 3-2 and 3-.
The shapes of 3 and 3-5 and 3-6 are formed in zigzag in the direction perpendicular to the extending direction of the wiring copper 5 of the FPC to be connected so that the zigzags of the terminals arranged adjacent to each other enter each other. Form.

Then, the wiring side 5 is arranged and soldered on the zigzag shape in which the terminals 3-2 and 3-3 and 3-5 and 3-6 are inserted.

(Effect of the Invention) Since the magnetic sensor of the present invention has the above-described configuration, even if the position of the wiring copper 5 is shifted to the left or right as shown in FIG. 2, the wiring copper is placed on the zigzag shape of the adjacent terminals. Since 5 will overlap, the tolerance of the error of the related position becomes large, and even if the left and right positions of the wiring copper are not accurately aligned, the bridge is formed by connecting the adjacent terminals and the FP connecting to the external circuit
This has the effect of facilitating the connection of C wiring to copper and improving the product yield.

[Brief description of drawings]

1 and 2 are explanatory views of electrical connection of a magnetic sensor of the present invention, and FIGS. 3 and 4 are explanatory diagrams of electrical connection of a conventional magnetic sensor. 1 ... Board, 2 ... Resistor element, 3 ... Output terminal, 4 ...
FPC, 5 ... Wiring copper.

Claims (1)

[Scope of utility model registration request] 1. In a magnetic sensor having a plurality of ferromagnetic thin film resistance elements on an insulating substrate, a lead wire for connecting output terminals adjacent to each other of the resistance elements is formed in a zigzag pattern such as a comb shape, and the lead wires for connecting the output terminals are adjacent to each other. A magnetic sensor characterized by reliable connection of wiring copper to terminals.