JP2549523Y2 - Magnetic head opposing gap adjustment mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a magnetic head for reading or writing magnetic data of a ticket, for example, provided in a ticket issuing apparatus. More specifically, the present invention makes it possible to easily finely adjust a facing gap between the magnetic heads. The present invention relates to an opposing gap adjusting mechanism for a magnetic head.

[0002]

2. Description of the Related Art Generally, the facing gap between a magnetic head and a pad roller opposed to each other with a transporting path interposed therebetween is very difficult because it is set to a small facing gap smaller than the ticket thickness of a transporting medium such as a ticket. In order to set the slight opposing gap, usually, a gap adjusting device is arranged around the magnetic head, or after mounting, a predetermined opposing gap is set by interposing a gap adjusting member such as a shim or a spacer. ing.

[0003]

However, with such a gap adjusting means, the entire magnetic head becomes large and complicated, and the gap adjusting operation requires skill and advanced techniques.
In addition, it takes time to adjust the gap by removing and adjusting each part, thereby lowering the efficiency of assembly and hindering the replacement work of the magnetic head. Therefore, the present invention aims to provide a magnetic head opposing gap adjusting mechanism having an adjusting mechanism that can easily and minutely adjust the gap with a simple structure without requiring skill or advanced technology when adjusting the gap between the magnetic heads.

[0004]

According to the present invention, a gap between a magnetic head and a pad roller opposed to each other with a conveyance path of a conveyance medium interposed therebetween is adjusted to a predetermined size, and a magnetic head mounted on a fixed member is opposed to the magnetic head. A gap adjusting mechanism, wherein one end of the one end is rotatably engaged with the fixing member, and the eccentric shaft portion of the other end is rotatably engaged with at least one of the magnetic head and the pad roller; Opposing gap adjustment of a magnetic head having an eccentric adjustment shaft for eccentrically rotating an eccentric shaft portion of the other engagement portion with the engagement portion as a rotation fulcrum and moving one of the magnetic head and the pad roller in the opposite direction. It is a mechanism.

[0005]

According to the present invention, when adjusting the opposing gap of the magnetic head, the eccentric adjustment shaft is set in a state in which one of the magnetic head or the pad roller engaged with the eccentric adjustment shaft is loosened from the fixed member so that the gap can be adjusted. With this rotation operation, the eccentric adjustment shaft is eccentrically rotated about the one end engaging portion with the fixed member and the eccentric shaft portion of the other end engaging portion is eccentrically rotated. Alternatively, one of the pad rollers is moved in the facing direction, and when the facing gap between the magnetic head and the pad roller has a predetermined size, the side engaged with the eccentricity adjusting shaft is fixed to the fixing member to adjust the gap. .

[0006]

As described above, the eccentricity adjusting shaft is rotated, and the magnetic head or pad roller is smoothly moved in the gap adjusting direction by this eccentricity to adjust the gap. A simple structure that allows fine adjustment while each mounting part is still attached to the fixing member allows the adjustment mechanism to be small and simple, and requires no skill or advanced technology, and shortens the gap adjustment with high accuracy. It can be easily performed in a short time, thereby improving the assembling efficiency and the magnetic head replacement operation.

[0007]

An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a ticket issuing device used in a station service. The ticket issuing device 11 arranges the roll paper 13 fed from the ticket issuing unit 12 in the middle of the transport of the roll paper feeding path 14. Cut to the ticket length with the cutter 15
Subsequently, the ticket data is printed by the print head 16, and the printed ticket is converted into valid data of the ticket by the magnetic head 18 for writing of the magnetic data processing unit disposed on the ticket discharge conveyance path 17. The written ticket data is read and confirmed by the magnetic head 19 for reading. At this time, a badly read ticket or a canceled ticket whose purchase has been canceled is collected by the waste ticket collection unit 21 through the waste ticket collection passage 20. The normal ticket is discharged to the discharge port 22 through the ticket discharge conveyance path 17.
By the way, each of the magnetic heads 18 and 19 described above has the configuration shown in FIG.
As shown in FIG. 3, a facing head gap adjusting mechanism 23 for the magnetic head is provided to easily adjust the facing gap L between the magnetic head 18 and the pad roller 24 to a predetermined size when the position of the magnetic head 18 is set. An example in which the writing magnetic head 18 is provided with the facing gap adjusting mechanism 23 will be described below. In this method, the pad roller 24 and the magnetic head 18 are fixedly installed at the upper and lower positions of the fixed side plate 25 provided vertically, and the pad roller 24 on the upper side protrudes from the fixed side plate 25. The pad roller 24 is rotatably and pivotally mounted on the roller holding member 26, and the roller contact surface 24a and the head contact surface 18a opposed thereunder have a ticket 13a.
The ticket data is magnetically processed in contact with the pinching state. On the other hand, the lower magnetic head 18 is equipped with a slide guide 27 as an opposing gap adjusting mechanism 23 and an eccentricity adjusting shaft 28 so that the magnetic head 18 can be finely adjusted in the direction facing the pad roller 24. The slide guide portion 27 is provided with a vertically long slide projection 29 protruding at the upper center of the head rear side, and the slide projection 29 is vertically slid into a vertically long hole 30 opened in the fixed side plate 25. The magnetic head 18 is restricted from moving in the left-right direction, and only vertical sliding movement is permitted. The eccentricity adjusting shaft 28 has a small-diameter shaft portion 28a at an inner end, a large-diameter eccentric shaft portion 28b at an intermediate portion, and a groove portion 28c at an outer end surface. And the small diameter shaft portion 28
a is rotatably engaged with an engagement hole 25a opened in the fixed side plate 25, and the eccentric shaft 28b at the intermediate portion is
The eccentricity adjustment shaft 28 is turned into a small-diameter shaft portion 28a at the inner end by rotating the hollow opening portion 18b formed at the inner end portion of the small-diameter shaft portion 28a by rotating the groove portion 28c of the outer end surface with a driver touching the tip of a driver. At the rotation fulcrum, and at this time, the eccentric shaft portion 28b at the intermediate portion eccentrically rotates, and pushes the inner wall surface of the hollow opening 18b corresponding to the eccentric shaft portion 28b in the up-down direction to push the magnetic head 18 Is moved up and down. Also,
The magnetic head 18 is fixed to the fixed side plate 2 with the left and right head fixing screws 31, 31 with the head contact surface 18a facing upward.
5, when adjusting the opposing gap L, the eccentricity adjusting shaft 28 is rotated to adjust the gap between the magnetic heads 18 with both head fixing screws 31, 31 slightly loosened. After this adjustment, the two screws 31, 31 are fixed again.

When adjusting the opposing gap of the magnetic head using the opposing gap adjusting mechanism 23 of the magnetic head constructed as described above, first, the head fixing screws 31 on both sides are slightly loosened, and the magnetic head 18 is moved up and down. To allow movement in the direction
The eccentric adjustment shaft 28 is rotated in this movement allowable state to move the magnetic head 18 gently in the gap adjustment direction, and the magnetic head 1 corresponding to this gently moves.
8 is gradually displaced in the gap adjusting direction, and stops rotating when the facing gap L between the magnetic head 18 and the pad roller 24 is set to a predetermined size. In this state, the two head fixing screws 31, Fixing the gap 31 completes the gap adjustment.

As described above, since the magnetic head is smoothly moved in the gap adjusting direction by adjusting the eccentricity by rotating the eccentricity adjusting shaft to adjust the gap, fine adjustment can be performed in a stepless manner. The simple structure that allows fine adjustment with the head fixing screw attached allows the adjustment mechanism to be smaller and simpler, and requires no skill or advanced technology, making it easy to adjust gaps with high precision in a short time. This can improve the assembly efficiency and the magnetic head replacement operation.

In the correspondence between the present invention and the configuration of the above-described embodiment, the transport medium of the present invention uses the ticket 1 of the embodiment.
3a, and similarly, the transport path corresponds to the ticket release transport path 17, the fixed member corresponds to the fixed side plate 25, and the one-end engaging portion corresponds to the small-diameter shaft portion 28a. The invention is not limited to the configuration of the above-described embodiment.

[Brief description of the drawings]

FIG. 1 is an internal configuration diagram showing a ticket issuing device of the present invention.

FIG. 2 is a longitudinal sectional side view showing a facing gap adjusting mechanism of the magnetic head of the present invention.

FIG. 3 is a front view showing the opposing gap adjusting mechanism of the magnetic head of the present invention.

[Explanation of symbols]

 13a ... Tickets 18, 19 ... Magnetic head 23 ... Magnetic head facing gap adjusting mechanism 24 ... Pad roller 25 ... Fixed side plate 28 ... Eccentricity adjusting shaft 28a ... Small diameter shaft portion 28b ... Eccentric shaft portion L ... Opposing gap

Claims (1)

(57) [Scope of request for utility model registration] 1. An opposing gap adjusting mechanism for a magnetic head, wherein an opposing gap between a magnetic head and a pad roller opposed to each other with a conveyance path of a conveyance medium interposed therebetween is adjusted to a predetermined size and attached to a fixed member. One end is rotatably engaged with the fixing member, and the eccentric shaft portion at the other end is rotatably engaged with at least one of the magnetic head and the pad roller. And an eccentric adjustment mechanism for eccentrically rotating an eccentric shaft portion of the other end engaging portion to move one of the magnetic head and the pad roller in the opposite direction.