JPS6364806B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic card reader that simplifies the installation of a magnetic-electric transducer.

In this type of device, the transducer, such as the magnetic head, is generally fixed using adhesives, screws, or other methods, making assembly work complicated and time-consuming. Moreover, the workability of removal was similarly poor.

Therefore, an object of the present invention is to facilitate the installation of a transducer.

Therefore, the present invention is characterized in that the transducer is press-fitted into a hollow part provided in a resin holding frame, and at that time, the transducer is compressed and held by the projections formed on the inner wall of the hollow part. shall be.

According to a preferred embodiment, a metal plate is used with the transducer, which has protrusions for electrically connecting its outer periphery with external electrical means.

In FIGS. 1 and 2 showing an embodiment of the present invention, reference numerals 10 and 11 are guide members formed by pressing a metal plate, and are fixed with screws (not shown) with a metal plate 12 of a constant thickness interposed therebetween. ), forming a card passage 13 through which the magnetic card 14 can pass. The card passage 13 has a certain gap that is approximately twice as large as the wall thickness of the card 14, and the magnetic card 14
is in contact with the end surface of the metal plate 12 and can move smoothly in the direction of the arrow 15.

In one guide member 10, the magnetic head 16
A holding device 17 for holding the is configured. The holding device 17 includes a movable part 18 that is integrally constructed with the magnetic head 16, and two support members 19 cut and raised from the guide member 10 to support the movable part 18.
20.

As shown in detail in FIGS. 3 and 4, the movable member 18 is made of resin (for example, ABS resin) provided with a hollow portion 21 for press-fitting and holding the magnetic head 16.
A holding frame 22 made of metal, a plate spring 23 made of metal (stainless steel spring material, phosphor bronze spring material, beryllium copper spring material, etc.) extending left and right from this holding frame,
The main elements are rod-shaped parts 24 and 25 made of resin (for example, ABS resin) with a circular cross section attached to each end of this leaf spring, and these parts are integrally molded by insert molding.

Specifically, the holding frame 22 holds the metal plate 26 and the magnetic head 16 in a press-fitted state in the direction of arrow 35 (see FIG. 3). In this case, as shown in FIG. 9, a protrusion 36 is integrally molded inside the holding frame 22, and when the magnetic head 22 and the metal plate 26 are press-fitted, they are held by pressing them inward. Desirable for simplifying workability. The holding frame has a stepped portion 27 for determining the press-fitting position of the magnetic head 16. The protrusion 36 is provided over the entire length or a portion of the hollow portion 21.

As shown in FIG. 5, the metal plate 26 has several protrusions 26a formed by press working to ensure good electrical contact with the outer plate of the magnetic head 16. The terminal portions of the metal plate 26, together with the terminals of the magnetic head 16, protrude into the opening of the holding frame 22 and are connected to the electric circuit portion through lead wires (not shown). This metal plate 26 is useful, for example, for grounding the outer plate of the magnetic head. Also, the metal plate 26
Before press-fitting the head 16 into the holding frame 22, insert the claw portion 26b into the small groove provided inside the holding frame 22.
This simplifies the press-fitting work of the head.

The holding strength of the magnetic head 16 may be such that the press-fitting operation can be performed manually.

The holding frame 22 has a protrusion 28 extending in the left-right direction, and works in cooperation with a positioning member 29, which will be described later, to act as a stopper against incorrect insertion of the card.

The leaf springs 23 extend in the left and right direction, and each elastic member 3
0, 31, and a cylindrical first rod-shaped portion 24 is integrated at one end by insert molding, and a cylindrical first rod-shaped portion 24 is formed at the other end.
The second rod-shaped portion 25 having a hook-like shape having 5a is also integrated. These two rod-like parts have the same central axis and are rotatable about the central axis.

The first support member 19 is vertically cut and raised from the guide member 10 by press working, and the first rod-shaped portion 24 is fitted into the circular hole portion 19a to rotatably and slidably support the first support member 19. do. On the other hand, the second support member 20 is cut and raised perpendicularly from the guide member 10, and has a cut groove 20a whose inner periphery is shaped like an inverted J,
The constricted portion 25a of the second rod-shaped portion 25 is rotatably (but not slidably) supported. In addition, in order to further strengthen the support of the constricted part 25a, the cut groove 20a may be configured with a hole and a passage slightly narrower than the constricted part 25a for pushing the constricted part 25a into the hole, if necessary. .

In the guide member 10, the remaining hole 32 in which the second support member 20 is cut and raised is larger in the direction of the cut groove 20a than the projected area of this support member. This helps improve the workability of fitting the rod-shaped portion 25.

Two positioning members 29 are vertically cut and raised from the guide member 10. The remaining cut-out hole is larger than the projected area of both positioning members 29, and forms an opening 33 through which the head of the magnetic head 16 is exposed.

When the movable body 18 is attached, the positioning member 29 is arranged so that each of the elastic members 30 and 31 is aligned with the holding frame 22.
The contact portion and the guide member 10
Determine the minimum distance between the magnetic head 16 and the reference plane.
The offset position of the reading surface 16a is determined. Furthermore, the height of the positioning member 29 is set so that both support members 1
The central axes of the rod-shaped parts 24 and 25 supported by the guide members 9 and 20 are set slightly higher than the height from the guide member reference plane. For this reason, the elastic members 30, 31
is slightly biased in the direction of arrow 34 in the vicinity of the magnetic head, with each end thereof being pivoted at rod-shaped portions 24, 25.

As a result, the elastic member is given an initial load that urges the magnetic head 16 in the opposite direction of the arrow 34, and the reading surface 16a of the magnetic head is applied to the magnetic card 14.
This also prevents the position of the magnetic head 16 from being displaced due to vibration or external pressure.

The positioning member 29 also has a flat portion 29b (see FIG. 6) parallel to the reference plane of the guide member 10 to provide a stop position for the rotation of the movable body 18 and to ensure smooth rotation. are doing.

In the assembly process, the magnetic head 1 is attached to the movable body 18.
6 and a metal plate 26 are press-fitted and held, and separately punched out by press working,
A guide member 10 provided with support members 19 and 20 as cut-and-raised portions formed by bending and a positioning member 29 and another guide member 11 are assembled. First, the first rod-shaped portion 19 of the movable body 18 is inserted into the hole of the first support member 19, and then the constricted portion 25a of the other second rod-shaped portion 25 is inserted into the cut in the second support member 20. Groove 2
It is inserted into 0a. In this process, the taper 29a provided on the positioning member 29
0 and 31 are smoothly accommodated in the flat portion 29b. Moreover, the hole 32 does not interfere with the movement of the rod-shaped portion 25 when the rod-shaped portion 25 is fitted into the second support member 20, and allows the rod-shaped portion to move smoothly.

With the magnetic head 16 held in this way,
The head 16 is connected to the card passage 1 as shown in FIG.
Stands out against 3. The position of the reading surface 16a is kept constant by a positioning member 29.

When the magnetic card 14 is manually moved along the card path 13 as shown in FIG.
The magnetic head 16 is moved by the arrow 34 (second
(see figure). Therefore, the magnetic head 16 is further urged by the restoring force of the elastic members 30 and 31, and comes into closer contact with the magnetic card 14. The horizontal contraction of the elastic members 30 and 31 caused by the upward displacement of the magnetic head 16 appears as sliding of the first rod-shaped portion 24 with respect to the support member 19.

6 and 7 show the case where the magnetic card 14 is inserted at an angle. If the contact surface of the card with the magnetic head 16 is not parallel to the card path, as in these cases, the magnetic head 16 will tilt when lifted due to the thickness of the card. Thus, the movable body 18 is rotatably supported and rotates smoothly so that the head reading surface 16a comes into close contact with the card 14. Therefore, even in these cases, the recorded information on the magnetic card can be read accurately.

FIG. 8 shows a case where the insertion direction of the magnetic card 14 is perpendicular to the normal direction and the card cannot be read at all. In response to such insertion, the magnetic head 16 is tilted by pressure from the end of the card 14, and the movable body also rotates. However, the two protrusions 28 provided on the holding frame 22 of the movable body come into contact with the positioning member 29 and prevent the movable body from rotating any further. This prevents the movable body from rotating to a restorable angle and also prevents pressure from being applied to the electrical leads.

Although one embodiment of the present invention has been described above, the embodiment is applicable not only to the case of manually moving a magnetic card but also to the case of automatically moving the card by driving a motor or the like.

Further, instead of the protrusions 36, an appropriate number of small protrusions may be provided.

Note that even if only one of the resin protrusion 36 and the metal plate 26 is used, the magnetic head can be held by adjusting the protrusion dimensions; however, when the outer periphery of the magnetic head is grounded, at least the metal Preferably, a plate 26 is used. This is because, although the outer periphery of a normal magnetic head has poor soldering workability, the metal plate 26 can be easily soldered by selecting the material. Further, if necessary, two metal plates 26 can be stacked and used, which has the advantage of being able to adjust the press-fitting strength.

The present invention can also be applied to a case where the magnetic head is fixed to a guide member (for example, made by resin molding).

As described above, in the present invention, the workability of assembling the transducer is significantly improved.

[Brief explanation of drawings]

1 to 8 show one embodiment of the present invention, FIG. 1 is a perspective view, FIG. 2 is a partially cutaway front view, FIG. 3 is a front view of the movable body 18, and FIG. 4 is a bottom view of the metal plate 26, and FIG. 5a is a front view of the metal plate 26.
Figure b is a sectional view taken along the line AA in Figure 5a, Figure 5c is a bottom view of the metal plate, and Figures 6 and 7 are explanatory diagrams showing the rotation of the magnetic head depending on the card insertion mode. 8 is an explanatory view showing the stopper action against incorrect card insertion, and FIG. 9 is a top view showing the movable body before the magnetic head is press-fitted. DESCRIPTION OF SYMBOLS 10, 11... Guide member, 13... Card passage, 14... Magnetic card, 15... Card movement direction, 16... Magnetic head, 17... Holding device,
18...Movable body, 19...First support member, 20
...Second support member, 20a... Cut groove, 22...
...Holding frame, 23... Leaf spring, 24... First bar-shaped part, 25... Second bar-shaped part, 26... Metal plate, 2
6a...Protrusion, 28...Protrusion, 29...Positioning member, 29a...Tapered part, 29b...Flat part,
30, 31...Elastic member, 32...Hole, 33...
...Opening, 36...Protrusion (protrusion).

Claims (1)

[Claims] 1.In order to guide the movement of the magnetic card, a guide member is provided which forms a card passage having a gap larger than the wall thickness of the magnetic card, and the guide member is provided with a card recorded on the magnetic card at a mounting position facing the passage. A holding device for positioning a transducer for reading information while moving relative to a magnetic card includes a resin holding frame provided with a hollow portion for press-fitting and holding the transducer, and the hollow portion. protruding means located on the inner wall of the magnetic card reader.