JPH073510Y2 - Magnetic head support mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a magnetic stripe reader for a bankbook such as a bank, and more particularly to a support mechanism for a magnetic head for reading the same.

[Conventional technology]

FIG. 4 shows a support mechanism for a magnetic head of a conventional magnetic stripe reader. In the figure, a magnetic head 1 is rotatably attached to an arm 2 supporting the magnetic head about an axis 3. The arm 2 receives the external power (not shown; the direction of the carriage is perpendicular to the paper surface in the figure) for carrying the magnetic head supporting mechanism in the direction of reading the magnetic stripe 9 of the passbook 10.
It is mounted rotatably around the shaft 5 and is urged clockwise by a spring 6. A roller 7 is attached to the arm 2, and the roller 7 swings up and down in accordance with the shape (change in the vertical direction) of the lower surface of the lift cam 8 fixed in the longitudinal direction, which is the direction in which the carriage frame 4 carries. Therefore, the vertical movement of the magnetic head 1 is controlled by the lift cam 8 whose predetermined lift is set corresponding to the carriage position of the carriage frame 4. When the passbook is taken in and out, the carriage frame 4 is moved to a position outside the width of the passbook, and at the same time, the lift cam 8 retracts the magnetic head 1 from the surface of the magnetic stripe 9 of the passbook. Next, when the passbook is inserted and the reading is started, the carriage frame 4 is carriage within the width range of the passbook, and at the same time, the lift cam 8 raises the magnetic head 1 so as to come into contact with the surface of the magnetic stripe 9 of the passbook and makes close contact therewith. . At this time, since the magnetic head 1 is freely rotatable with respect to the axis 3, even if the surface of the magnetic stripe 9 is slightly inclined or wavy, a close contact state is maintained and complete reading and writing are performed. .

[Problems to be solved by the device]

However, in this conventional structure, when the magnetic head 1 rotates about the axis 3 and rises so as to contact the surface of the magnetic stripe 9 while the magnetic head 1 remains tilted, deformation of the passbook and surface conditions (friction, The inclination of the magnetic head 1 is not restored due to foreign matter adhered to the magnetic stripe 9 without changing its posture.
When the reading or writing operation is started in contact with the surface of the, the reading error or the writing error may occur.

The present invention solves such a problem, and when the magnetic head 1 approaches the surface of the magnetic stripe 9,
It is an object of the present invention to provide a magnetic head support mechanism which has a structure in which the magnetic head 1 is perpendicular to the surface of the magnetic stripe, and in which a stable read or write operation is performed.

[Means for Solving the Problems]

In order to solve the above problems and achieve the object, the magnetic head support mechanism of the present invention is constructed as follows.

In a magnetic head supporting mechanism for supporting a magnetic head for writing information on a magnetic stripe or reading information recorded on the magnetic stripe, a carriage frame that moves in the longitudinal direction of the magnetic stripe and the carriage frame. A base end of which is pivotally supported and a tip of which is pivoted so as to move toward and away from the surface of the magnetic stripe, and an end of the arm which is pivotally supported so that the tip end surface is on the surface of the magnetic stripe. A magnetic head provided so as to be in close contact with each other, a spring for imparting a rotational force to the arm so as to bring the magnetic head into close contact with the surface of the magnetic stripe, and the magnetic head at the specific moving position of the carriage frame. A lift cam that regulates the rotation position of the arm so that it moves away from the surface of the stripe. A short shaft projecting from the carriage frame and a restricting groove provided at a tail end portion of the magnetic head so as to be loosely engaged with the short shaft, and the magnetic head moves in accordance with the rotation of the arm. When displacing, the relative displacement locus of the short axis at the tail end portion of the magnetic head is set so that the relative displacement between the magnetic head and the short axis is allowed and the swing range of the magnetic head is restricted. And a regulation groove provided along the regulation groove.

[Action]

Since such a mechanism is incorporated, in the process in which the magnetic head approaches the surface of the magnetic stripe, it approaches perpendicularly to the surface of the magnetic stripe. The head adheres perpendicularly to the surface of the magnetic stripe. Also, when the magnetic head is in close contact with the surface of the magnetic stripe, the magnetic head is allowed to rotate slightly with respect to its rotation axis, so the surface of the magnetic stripe is slightly inclined or wavy. Even if it is, the close contact state can be maintained. Therefore, the reading operation and the writing operation can be surely performed.

〔Example〕

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

In FIG. 1, the magnetic head 11 is rotatably supported by a shaft 13 at the tip of an arm 12. The arm 12 in FIG. 2 is rotatably supported by a carriage frame 14 by a shaft 15 and is rotated in a clockwise direction by a spring 16 (magnetic head 11).
It is biased toward the magnetic stripe 9).
The carriage frame 14 is guided and driven so that the magnetic head 11 reads and writes the magnetic recording on the magnetic stripe 9 so as to carry in the magnetic recording direction of the magnetic stripe 9, but these mechanisms are not shown.

A roller 17 is fixed to the arm 12, and the roller 17 is in contact with a lift cam 18 fixed in the carriage direction of the carriage frame 14. The lift of this cam causes the tip of the arm 12, that is, the magnetic head 11 to cause the magnetic stripe 9 to move.
The close contact and release operations are performed. This is because the arm 12 oscillates due to the predetermined lift of the position of the lift cam 18 at the destination moved by the carriage operation.

A short shaft 19 is fixed to the carriage frame 14, and the short shaft 19 is engaged with a restriction groove 20 formed at a slight angle with respect to the carriage frame direction of the magnetic head 11. The assembled state is shown in FIG. The vertical relative position of the carriage frame 14 with respect to the magnetic stripe 9 is
It does not change even if the carriage is operated. Because of this arm 12
When the lift cam 18 swings following the lift of the lift cam 18, the fixing shaft 20 fixes the short shaft 19 so that the magnetic head 11 approaches the surface of the magnetic stripe 9 vertically as shown in FIG. As shown in the figure, a slight rotation with respect to the shaft 13 is allowed at a position in close contact with the surface of the magnetic stripe 9.

That is, in FIG. 3a, the width of the restriction groove 20 swings with a fit of about the clearance fit with the outer diameter of the short shaft 19, and the restriction groove 20 tilts the magnetic head 11 counterclockwise with respect to the upward movement. , The magnetic head 11 rises vertically.

Further, in FIG. 3, if the width dimension A of the restriction groove 20 is set to be, for example, about 1.6 mm wider than the outer diameter of the minor axis, the magnetic head 11 is located at this position.
Is rotatable with respect to the shaft 13 and its amount is about 1.0 mm.

It should be noted that the passbooks have different thicknesses depending on the types, and even the same type has different thicknesses when the opened pages are different. Therefore, the position where the magnetic head 11 comes into close contact with the surface of the magnetic stripe 9 varies depending on the thickness of the passbook at that time.

[Effect of device]

 According to the present invention, the following effects are achieved.

(1) Since the magnetic head is swingably supported on the tip of the arm and the tip surface of the magnetic head can contact the surface of the magnetic stripe with some space, the surface of the magnetic stripe is slightly inclined or wavy. Also, a good adhesion state is secured, and stable writing or reading can be performed.

(2) Since the restricting groove provided at the tail end portion of the magnetic head is loosely engaged with the short shaft protruding from the carriage frame, the magnetic head is held in a swingable state and the magnetic The head end surface is always kept substantially in direct contact with the magnetic stripe surface. For this reason, the magnetic head does not have a large inclination with respect to the surface of the magnetic stripe in the process of the magnetic head approaching the surface of the magnetic stripe at the beginning of operation, and the magnetic head operates in such an inclined state. It is possible to avoid problems such as starting.

[Brief description of drawings]

FIG. 1 is a support mechanism diagram of a magnetic head according to an embodiment of the present invention, FIG. 2 is a support mechanism diagram in which an arm is rotatable by an axis of a carriage frame, and FIG. 3 is a magnetic head closely attached to a passbook magnetic stripe. Shows the state. FIG. 3a shows a state in which the magnetic head rises vertically to the passbook magnetic stripe. FIG. 4 shows a conventional magnetic head support mechanism. 9 ... magnetic stripe, 10 ... passbook, 11 ... magnetic head, 12 ... arm, 13 ... axis, 14 ... carriage frame, 15 ... axis, 16 ... spring, 17 ... roller, 18 ...
… Lift cam, 19 …… Short shaft, 20 …… Proper groove.

Claims (1)

[Scope of utility model registration request] 1. A magnetic head supporting mechanism for supporting a magnetic head for writing information on a magnetic stripe or reading information recorded on the magnetic stripe, comprising a carriage frame moving in a longitudinal direction of the magnetic stripe. An arm which is pivotally supported by the carriage frame at its base end and rotates so that its tip is brought into contact with and separated from the surface of the magnetic stripe; and an arm which is pivotally supported by the tip of this arm and whose tip surface is A magnetic head provided so as to be in close contact with the surface of the magnetic stripe, a spring for imparting a rotational force to the arm so as to bring the magnetic head into close contact with the surface of the magnetic stripe, and a magnetic head at a specific moving position of the carriage frame. The rotation position of the arm is regulated so that the magnetic head is moved away from the surface of the magnetic stripe. A lift cam, a short shaft protruding from the carriage frame, and a restricting groove provided at a tail end portion of the magnetic head so as to be loosely engaged with the short shaft. When the magnetic head is displaced, relative displacement of the short axis at the tail end portion of the magnetic head is allowed so that relative displacement between the magnetic head and the short axis is allowed and the swing range of the magnetic head is restricted. A magnetic head support mechanism comprising: a regulating groove provided along a different displacement locus;