JP3132327B2 - Fixed structure of magnetic head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head fixing structure provided in a magnetic card reader or the like.

[0002]

2. Description of the Related Art Generally, in this type of fixed structure of a magnetic head, in order to accurately read magnetic data written on a magnetic card with a magnetic head, the magnetic card is transported in a direction perpendicular to the direction of transport. The magnetic head needs to be adjusted and fixed with high accuracy in the thickness direction of the magnetic card and the inclination angle (hereinafter, referred to as azimuth angle) of the magnetic data in the magnetic card.

For example, Japanese Patent Laid-Open Publication No. 4-274587 discloses an adjustment method for a magnetic head fixing structure of this type. The one disclosed herein includes a head bracket to which a magnetic head is attached by adjusting means including a plurality of setscrews, and another bracket that supports a touch roller or the like. It is mounted on another bracket while adjusting the distance between the head and the touch roller.

[0004]

However, the above-described conventional magnetic head fixing structure requires an adjustment to the head bracket when the magnetic head is mounted on the head bracket. When mounting to another supporting bracket, adjustment is required, so that the operation is complicated and requires skill, and there is a problem that a long operation time is required.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a magnetic head which does not require position adjustment, and which can easily and shorten the work time for mounting. To provide a fixing structure.

[0006]

In order to achieve this object, a magnetic head fixing structure according to the present invention has a composite structure in which a touch roller in contact with a magnetic head is supported and a magnetic card transport path is formed. Equipped with a plastic bracket,
A rectangular fitting hole for fitting the magnetic head is provided on the transport path surface of the bracket, and a mounting surface for attaching one of the front and rear surfaces of the magnetic head in the card transport direction is formed on one side surface of the fitting hole. A pair of opposed projections for sandwiching both sides of the magnetic head in the card transport direction are integrally provided on each of both sides adjacent to the mounting surface of the fitting hole,
In addition, a regulating member that contacts the bottom surface of the magnetic head is integrally formed on the back side of the fitting hole.

[0007]

According to the present invention, positioning in the card conveying direction and adjustment of the azimuth angle are performed by the mounting surface provided on one side surface of the fitting hole, and the mounting hole is provided on both side surfaces adjacent to the mounting surface of the fitting hole. The protrusions perform positioning in a direction orthogonal to the card transport direction, and the regulating members perform positioning in the card thickness direction.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a magnetic card reader adopting the magnetic head fixing structure according to the present invention, FIG. 2 is a plan view of the same transport unit, FIG. 3 is a cross-sectional view taken along line III-III in FIG.
4 is a sectional view taken along the line IV-IV in FIG. 2, FIG. 5 is an exploded perspective view seen from the back of the transport unit, and FIG. 6 is a rear view of the transport unit. In these figures, the magnetic card reader indicated by reference numeral 1 as a whole includes a long rectangular base 2 made of a synthetic resin extending in the left-right direction in FIG. The base 2 is formed by a bottom portion 3 serving as a card transport path and side portions 4 and 4 having an interval substantially equal to the width of the magnetic card P erected on both sides of the bottom portion 3, and substantially at the center of the bottom portion 3. , A substantially trapezoidal through hole 6 is formed.

On both side surfaces 4 corresponding to the through holes 6, flange portions 7, 8 located on the back side of the drawing in FIG.
Are integrally formed. In the flange parts 7 and 8,
Two mounting holes 9, 9 and 11, 11 are formed in each case, and positioning dowels 10, 12 are protruded. Reference numeral 15 denotes a transport unit, which includes a bracket 16 formed entirely of a synthetic resin as a base as shown in FIG. Bracket 1
Reference numeral 6 denotes a bottom portion 17 which forms a part of a card transport path having substantially the same outer shape as the through-hole 6, and the same interval as the interval between the side plates 4 and 4 erected on both sides of the bottom portion 17. It is formed by side plates 18 and 19 erected.

A motor mounting portion 20 is formed integrally with the side plate 18 so as to be orthogonal to the side plate 18, and a flange portion 21 is formed integrally. Flange part 21
Is the bottom portion 1 obtained by subtracting the thickness of the flange portion 21 from the portion where the flange portion 8 is located on the back side of the paper surface with respect to the bottom portion 3.
7 is located on the back side of the paper surface. In the flange portion 21, mounting holes 22, 22 corresponding to the mounting holes 11, 11 are provided.
And a hole 23 corresponding to the positioning dowel 12 is formed. A flange portion 24 is formed integrally with the side plate 19. The flange portion 24 is located on the back side of the paper surface of the bottom surface portion 17 by the thickness obtained by subtracting the thickness of the flange portion 24 from the back surface portion of the flange portion 7 on the paper surface side of the bottom surface portion 3. In the flange portion 24, mounting holes 25, 25 corresponding to the mounting holes 9, 9 are formed, and holes 26 corresponding to the positioning dowels 10 are formed.
Are drilled.

A rectangular head mounting hole 28 having an inner side surface of the side surface portion 18 as one side is formed in the bottom surface portion 17, and a direction AB, that is, a transfer of the magnetic card P, is provided on the side surface portion 19 side. A rectangular window 29 is formed along the direction. Dowels 30 project from both sides of the head mounting hole 28 so as to face each other, and an inner surface of the rear surface portion 31 forms an abutment surface 31a against which a rear end surface 53a of a magnetic head 53 described later abuts. As shown in FIG. 5, an elongated mounting hole 32 is formed in the rear surface portion 31 in the vertical direction. Abutment surface 31
a is formed so as to be orthogonal to the AB direction which is the transport direction of the magnetic card P. On the back surface side of the head mounting hole 28, a mounting piece 33 as an L-shaped regulating member integrally formed so as to be bridged between the edge of the head mounting hole 28 and the back surface of the flange portion 21. Is provided, and FIG.
As shown in the figure, a mounting portion 33a for mounting the bottom portion 53c of the magnetic head 53 is formed on the upper end surface of the mounting piece 33.

As shown in FIG. 5, a concave fitting portion 34 is formed around the rear surface of the window 29. The front and rear of one side of the window 29 on the bottom surface of the concave fitting portion 34 are staggered in plan view. The formed three protruding pieces 35a, 35b, and 35c are erected, and a portion surrounded by the three protruding pieces 35a, 35b, and 35c is a rear surface direction that supports one end of a shaft of a driven roller 56 described later. That is, a bearing portion 35 having an opening in the C direction is formed. Reference numeral 36 denotes a protruding piece that is provided upright with a slight gap between the protruding pieces 35a. Two protrusions 37a and 37b are provided upright on the bottom surface of the recess 34 on the other side of the window 29, and the recess 35 corresponding to the space between the protrusions 37a and 37b. Is provided with a recessed portion 38, and a portion surrounded by the protruding pieces 37a, 37b and the recessed portion 38 serves as a bearing for the other end of the shaft of the driven roller 56 described later.
A bearing portion 37 having an opening in the direction is formed. A U-shaped groove 3 in a side view is formed on the upper wall of the standing wall before and after the concave fitting portion 34.
A pair of spring receiving portions 39 formed with 9a are integrally formed. A screw hole 40 is provided between the spring receiving portions 39 at the upper end edge of the concave fitting portion 34.

Reference numeral 41 denotes a motor in which a worm 42 is mounted on the drive shaft of the worm 42. The motor 41 is mounted on the motor mounting portion 20 by screws 43. Reference numeral 44 denotes a worm wheel which meshes with the worm 42. The worm wheel 44 is integrally formed with a collar portion 44a, and is axially mounted on a shaft 45 which is suspended between the both side plates 18 and 19 of the bracket 16. Shaft 45
The E-ring 46 fitted at one end and a screw 47 screwed into the other end so as to engage with the side surface of the worm wheel 44 prevent axial removal from the side plates 18 and 19. Have been. Reference numeral 48 denotes a touch roller which is formed of a flexible plastic, is positioned in the X direction on the shaft 45 and is axially attached thereto, and is in contact with a magnetic head 53 described later. Reference numeral 49 denotes a driving roller which is axially attached to the shaft 45 so as to face the window 29. Reference numeral 50 denotes a driven roller rotatably supported by a shaft 51 which is cantilevered by the side plate 19 and faces the window 29.

Numeral 53 denotes a magnetic head having a screw hole 54 formed in a rear end face 53b. Reference numeral 56 denotes a pair of pinch rollers rotatably supported by the shaft 57, and reference numeral 58 denotes a driven belt stretched between the pinch rollers 56. Reference numeral 60 denotes a pressing spring, which is a curved portion 60a formed at a central portion, a shoulder portion 60b connected to the curved portion 60a and extending left and right, and connected to the shoulder portion 60b and downward from the shoulder portion 60b. It is formed by a pair of arms 60c which are bent and further extended rearward. Reference numeral 61 denotes a stopper plate provided with a mounting hole 61a.

Next, a method of assembling the magnetic card reader thus configured will be described. As shown in FIG. 5, the magnetic head 53 is inserted into the head mounting hole 28 from the back side of the transport unit 15. The inserted magnetic head 53 has both side surfaces 53a sandwiched and fixed by the dowels 30 as shown in FIG.
The positioning in the X direction is performed with respect to the head mounting hole 28. Further, as shown in FIG. 4, the bottom surface 53c of the magnetic head 53 is mounted on the mounting portion 33a of the mounting piece 33, and is positioned in the Z direction with respect to the head mounting hole 28.
Then, the magnetic head 53 is attached to the rear surface portion 31 with the screws 55 by abutting the rear surface 31b against the abutment surface 31a of the rear surface portion 31.

The magnetic head 53 thus mounted is positioned with respect to the head mounting hole 28 in the X, Y, and Z directions. The touch roller 48 in contact with the magnetic head 53 is positioned on the shaft 45 in the X direction and is axially attached thereto. The shaft 45 is positioned between the side plates 19 in the Y and Z directions.
8 is positioned in the X, Y, and Z directions. Since the side plate 18 and the head mounting hole 28 are formed in the same bracket 16, the touch roller 48 and the magnetic head 53 are connected to each other by the bracket 16, which is one member.
Positioning in the Z direction is performed. Therefore, as compared with the conventional case in which two or more members are interposed between the magnetic head and the touch roller, no assembly error occurs between the members, so that adjustment after assembly is not required.

In this embodiment, the abutting surface 3 of the rear surface 31 is used.
1a is formed so as to be orthogonal to the direction AB of the card transport direction, and the azimuth angle θ of the magnetic head 53 is set to 0 °. However, the present invention is not limited to this. Needless to say, a predetermined azimuth angle θ can be obtained in the magnetic head 53 by forming the abutting surface 31a to be inclined in accordance with the azimuth angle θ.

Next, a method of assembling the driven belt 58 will be described with reference to FIG.
It will be described based on. Shaft 57 of pinch roller 56
Are inserted into the bearings 35 and 37 from the openings of the bearings 35 and 37 in the direction opposite to the arrow C direction. After a while
The shoulder 60b of the presser spring 60 is inserted into the groove 3 of the spring receiving portion 39.
9a, and the arm 60c is inserted between the protruding pieces 35a and 36 and between the protruding piece 37a and the upright wall of the concave fitting portion 34. The inserted arm portion 60c contacts both ends of the shaft 57. Then, the stopper plate 61 is applied to the arm portion 60a, and the screw 62 is inserted into the mounting hole 61a and screwed into the screw hole 40, thereby restricting the retaining spring 60 from coming off.
Due to the arm 60c, both ends of the shaft 57 are
37 is prevented from falling out of the opening.

The driven belt 58 attached so as to face the window 29 from the back side of the bracket 16 in this manner.
And the drive belt 52 attached so as to face the window 29 from the surface side of the bracket 16, the shafts 45, 51 and the shaft 56 are separated by the bracket 16, which is a single member without passing through other members. 3, the distance d between the shafts of the two belts shown in FIG. 3 is always kept constant, and there is no need to adjust the distance d. In addition, the contact pressure between the two belts is kept constant. Card running is obtained. Further, when the pinch roller 57 of the driven belt 58 is assembled to the bearings 35 and 37, the pinch roller 57 is inserted from the openings of the bearings 35 and 37. Becomes easier.

The transport unit 1 assembled as described above
The holes 26 and 23 of the base 5 are aligned with the dowels 10 and 1
1 and the transfer unit 15 is fitted into the through hole 6 of the base 2 as shown in FIG.
Stack 4,21. At this time, the flange portion 21 is located on the back side of the paper surface of the bottom surface portion 17 by the thickness obtained by subtracting the thickness of the flange portion 21 from the portion of the flange portion 8 located on the paper back side of the bottom surface portion 3. Further, the flange portion 24 is located on the back side of the paper surface of the bottom surface portion 17 by an amount obtained by subtracting the thickness of the flange portion 24 from the back surface of the flange portion 7 on the paper surface side of the bottom surface portion 3. Therefore, the transport unit 15
The surface of the bottom portion 17 is located at the same surface position as the surface of the bottom portion 3 of the base 2. The transport unit 15 is connected to the base 2 by inserting screws (not shown) into the holes 25 of the flange portion 24 and the holes 9 of the flange portion 7 and from the holes 22 of the flange portion 21 to the holes 11 of the flange portion 8, respectively. Attach to

Next, the operation of the magnetic card reader thus assembled will be described. As shown in FIG. 1, when the magnetic card P is inserted from the card insertion slot 5 and the detection means (not shown) detects that the magnetic card P is inserted, the motor 41 starts normal rotation. The rotation of the motor 41 rotates the shaft 45 via the worm 42 and the worm wheel 44 to cause the drive belt 52 to travel and the driven belt 58 to follow. When the leading end of the magnetic card P comes into contact with the drive belt 51 of the transport unit 15, the magnetic card P
Is transported in the direction A while being sandwiched between the driving belt 51 and the driven belt 58, and the magnetic head 53 reads and writes magnetic data. When reading and writing are completed, the motor 41 rotates in the reverse direction, and the magnetic card P is transported in the direction B and ejected from the card insertion slot 5.

[0022]

As described above, according to the present invention, there is provided a synthetic resin bracket which supports a touch roller in contact with a magnetic head and has a magnetic card conveying path formed thereon. A rectangular fitting hole for fitting the magnetic head is provided on one side of the fitting hole, and one side surface of the fitting hole is formed with a mounting surface for attaching one of the front and rear surfaces of the magnetic head in the card transport direction, and the fitting hole is formed. A pair of opposing projections for sandwiching both sides of the magnetic head in the card transport direction are integrally provided on both sides adjacent to the mounting surface, and abut against the bottom surface of the magnetic head on the back side of the fitting hole. By integrally forming the regulating member, positioning in the card conveying direction and adjustment of the azimuth angle are performed by the mounting surface provided on one side surface of the fitting hole, and the card is provided by the projections provided on both side surfaces of the fitting hole. The positioning in the direction perpendicular to the transport direction is performed, and the positioning in the thickness direction of the card is performed by the ribs. Therefore, the magnetic head is positioned only by fitting it into the fitting hole and fixing it to the mounting surface. This eliminates the need for adjustment, thereby facilitating the mounting of the magnetic head and shortening the operation time.

[Brief description of the drawings]

FIG. 1 is a plan view of a magnetic card reader employing a magnetic head fixing structure according to the present invention.

FIG. 2 is a plan view of a transport unit in a magnetic card reader employing a magnetic head fixing structure according to the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is an exploded perspective view of the transport unit in the magnetic card reader employing the magnetic head fixing structure according to the present invention, as viewed from the back of the transport unit.

FIG. 6 is a rear view of the transport unit in the magnetic card reader employing the magnetic head fixing structure according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Magnetic card reader, 2 ... Base, 3 ... Bottom part, 6 ...
Through hole, 15: transport unit, 16: bracket, 17
.., Bottom surface, 28 head mounting hole, 30 dowel, 31 rear surface, 31a abutment surface, 33 mounting plate, 33a mounting portion, 53 magnetic head, 53a side surface, 53b rear end surface, 53c ... Bottom surface.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 5/48 G11B 21/20 G06K 13/02

Claims (1)

(57) [Claims] 1. A bracket made of synthetic resin, which supports a touch roller in contact with a magnetic head and has a magnetic card transport path formed therein, and a rectangular fitting for fitting the magnetic head to the transport path surface of the bracket. the provided Goana, to form a mounting surface for mounting either side of the front and rear of the card conveying direction of the magnetic head on one side of the fitting hole, the respective side surfaces adjacent to the mounting surface of the fitting hole <br/> provided integrally with a pair of opposed projections for pinching both sides of the card conveying direction of the magnetic head, and to form a regulating member for abutting the bottom surface of the magnetic head on the back side of the fitting hole together to A magnetic head fixing structure, characterized in that: