JPH04132636U - Magnetic head opposing gap adjustment mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To have an adjustment mechanism that allows fine adjustment with a simple structure and without requiring skill or advanced technology when adjusting the gap between magnetic heads. [Structure] A facing gap adjustment mechanism for a magnetic head that adjusts the facing gap between a magnetic head and a pad roller that are disposed opposite to each other across a conveyance path for a conveyance medium to a predetermined dimension and is attached to a fixing member, the mechanism comprising: allow one end to rotate and engage.
The eccentric shaft portion of the other end is allowed to rotate and engage with at least one of the magnetic head or the pad roller, and the eccentric shaft portion of the other end engaging portion is eccentrically rotated using the one end engaging portion as a rotation fulcrum. The present invention is characterized in that it is a magnetic head opposing gap adjustment mechanism that includes an eccentric adjustment shaft that moves either the magnetic head or the pad roller in opposing directions.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea can be installed, for example, in a ticket issuing device to read the magnetic data on the ticket, or Regarding the magnetic head for writing processing, for more details, please refer to the gap between the opposing magnetic heads. The present invention relates to an opposing gap adjustment mechanism for a magnetic head that can be finely adjusted.

0002

[Conventional technology]

Generally, the gap between a magnetic head and a pad roller, which are placed opposite each other across a conveyance path. is set to a slight opposing gap that is smaller than the thickness of the transport medium such as a ticket, so it is non-trivial. It is always difficult to set up this small opposing gap, which is usually done around the magnetic head. Install a gap adjustment device, or install gap adjustment members such as shims and spacers after installation. A predetermined opposing gap is set by interposing them.

0003

[Problem that the idea aims to solve]

However, with such gap adjustment means, the entire magnetic head becomes larger and more complex. The work becomes complicated, requires skill and advanced technology to adjust the gaps, and requires careful adjustment of each part one by one. It takes time to adjust the gap by attaching and detaching, reducing assembly efficiency and replacing the magnetic head. It was interfering with my work. Therefore, this idea requires skill and advanced technology when adjusting the gap between magnetic heads. The opposing gap between the magnetic heads has a simple structure and an adjustment mechanism that allows for easy minute adjustments. The purpose is to provide an adjustment mechanism.

0004

[Means to solve the problem]

This idea consists of a magnetic head and a pad roller that are placed opposite each other across the transport path for the transport medium. The facing gap of the magnetic head that is attached to the fixed member by adjusting the facing gap with the magnetic head to the specified dimension. A space adjustment mechanism that engages with the fixed member by allowing rotation of one end, and adjusts the eccentricity of the other end. The shaft portion is engaged with at least one of the magnetic head or the pad roller by allowing rotation thereof. and eccentrically rotating the eccentric shaft portion of the other end engaging portion using the one end engaging portion as a rotation fulcrum, Equipped with an eccentric adjustment shaft that moves either the magnetic head or pad roller in the opposite direction. The present invention is characterized in that it is an opposing gap adjustment mechanism for magnetic heads.

[0005]

[Effect]

According to this invention, when adjusting the facing gap of the magnetic head, the eccentric adjustment shaft and the Loosen one of the magnetic head or pad roller from the fixed member so that the gap can be adjusted. Rotate the eccentric adjustment shaft in the state that the eccentric adjustment shaft is fixed. The eccentric shaft portion of the other end engaging portion rotates eccentrically using the one end engaging portion with the member as a rotation fulcrum, and the magnetic Move one of the heads or pad rollers in opposite directions to separate the magnetic head and pad roller. When the facing gap with the roller has formed the specified dimension, the side that engages with this eccentric adjustment shaft Fix it to the fixed member and adjust the gap.

[0006]

[Effect of the idea]

In this way, by rotating the eccentricity adjustment shaft, you can adjust the magnetic head or pad according to this amount of eccentricity. Stepless fine adjustment is possible to adjust the gap by smoothly moving the drawer in the gap adjustment direction. Moreover, it has a simple structure that allows fine adjustment while each attachment part is attached to the fixed member. Therefore, the adjustment mechanism can be made smaller and simpler, and it does not require skill or advanced technology. High-precision gap adjustment can be easily performed in a short time, improving assembly efficiency and magnetic Head replacement work can be improved.

[0007]

【Example】

An embodiment of this invention will be described in detail below based on the drawings. FIG. 1 shows a ticket issuing device used for station service, and this ticket issuing device 11 is The roll paper 13 fed out from the ticket issuing unit 12 is transported along the roll paper feeding path 14. The ticket is cut to length using a cutter 15 installed during transportation, and then the print head 16 is used to cut the ticket into length. The ticket data is printed, and the printed ticket is placed on the ticket discharge conveyance path 17. The valid data of the ticket is written by the magnetic head 18 for writing in the magnetic data processing section. The ticket data is read and confirmed by the magnetic head 19 for reading. Badly read tickets or canceled tickets whose purchase has been canceled are returned to the discarded ticket collection path 20. The normal tickets are collected by the waste ticket collection unit 21, and the normal tickets are passed through the ticket discharge conveyance path 17 to the discharge port 2. 2 is released. By the way, as shown in FIGS. 2 and 3, each of the magnetic heads 18 and 19 described above has a is equipped with a magnetic head facing gap adjustment mechanism 23 to set the position of the magnetic head 18. At times, the opposing gap L between the magnetic head 18 and the pad roller 24 can be easily adjusted to a predetermined dimension. It is configured to allow minute adjustments, and the gap facing the magnetic head 18 for writing is as follows. An example equipped with the adjustment mechanism 23 will be described. This means that pad rollers 24 are installed at the upper and lower positions of a fixed side plate 25 provided in the vertical direction. The magnetic head 18 is fixedly installed vertically facing each other, and the upper pad row is The pad roller 24 is attached to a roller holding member 26 protruding from the fixed side plate 25. is mounted so as to be rotatably supported, and is opposed to this roller contact surface 24a and its lower part. When the ticket 13a is held between the head contact surface 18a and the ticket 13a is held, the ticket data is read. Treat magnetically. On the other hand, the magnetic head 18 on the lower side has a slot as the facing gap adjustment mechanism 23. Equipped with an ID guide section 27 and an eccentric adjustment shaft 28, the magnetic head 18 is mounted on a pad. The slide guide part 27 is for fine adjustment in the direction opposite to the roller 24. A vertically elongated slide protrusion 29 is provided at the top center of the rear side of the pad, and this slide protrusion 2 9 is allowed to slide vertically into a long hole 30 opened in the fixed side plate 25 in the vertical direction. This engagement action restricts the movement of the magnetic head 18 in the left and right direction. Only vertical sliding movement is allowed. The eccentric adjustment shaft 28 has a small diameter shaft part 28a at the inner end and a large diameter eccentric shaft part 28 at the middle part. b has a groove 28c on the outer end surface. Then, the small diameter shaft portion 28a is attached to the fixed side plate 2. 5, the eccentric shaft portion 28b in the middle portion is engaged with the engaging hole 25a opened in the The outer end surface is interposed in a hollow opening 18b formed in the magnetic head 18 to allow rotation. The eccentric adjustment shaft is adjusted by the staff member placing the tip of the screwdriver in the groove 28c and turning it. 28 rotates around the small diameter shaft portion 28a at the inner end, and at this time, the eccentric shaft portion at the intermediate portion 28b rotates eccentrically to form a hollow opening that contacts the eccentric shaft portion 28b in the vertical direction. The magnetic head 18 is moved and adjusted in the vertical direction by pressing the inner wall surface of the portion 18b. In addition, the magnetic head 18 has left and right sides with the head contact surface 18a facing upward. The head is fixed to the fixed side plate 25 with fixing screws 31, 31, and the opposing gap L can be adjusted. When adjusting, turn the eccentric adjustment shaft 28 with both head fixing screws 31, 31 slightly loosened. Adjust the gap between the magnetic heads 18 by moving the screws 31 and 31 again after this adjustment. 31 is fixed.

[0008] Using the magnetic head facing gap adjustment mechanism 23 configured as described above, the magnetic head When adjusting the opposing gap, first slightly loosen the head fixing screws 31, 31 on both sides. , the magnetic head 18 is provided to be allowed to move in the vertical direction, and the eccentricity is adjusted in this movement allowed state. Rotate the shaft 28 to gently move the magnetic head 18 in the gap adjustment direction, In accordance with this gradual movement, the opposing surface side of the magnetic head 18 corresponding to this gradually moves. The opposing gap L between the magnetic head 18 and the pad roller 24 is displaced in the gap adjustment direction. When it is set to a predetermined dimension, it stops rotating, and in this state, both head fixing screws 31, By fixing 31, the gap adjustment is completed.

[0009] As mentioned above, rotate the eccentricity adjustment shaft to adjust the gap of the magnetic head using this amount of eccentricity. Smooth movement in the same direction to adjust the gap allows stepless fine adjustment, and even on the fixed side The simple structure allows for fine adjustments with the head fixing screws attached to the plate, making it easy to adjust. The mechanism can be miniaturized and simplified, and high accuracy can be achieved without requiring skill or advanced technology. Adjustments can be made easily in a short time, improving assembly efficiency and reducing magnetic head replacement work. can be improved.

0010 In the correspondence between this invention and the configuration of the above-mentioned embodiment, The conveyance medium of this invention corresponds to the ticket 13a of the embodiment, and similarly below, The conveyance path corresponds to the ticket release conveyance path 17, The fixed member corresponds to the fixed side plate 25, Although the one end engaging portion corresponds to the small diameter shaft portion 28a, this invention differs from the structure of the above-mentioned embodiment. It is not limited only to

[Brief explanation of drawings]

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

FIG. 2 is a longitudinal sectional side view showing the opposing gap adjustment mechanism of the magnetic head of this invention.

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

[Explanation of symbols]

13a...Ticket 18, 19...Magnetic head 23...Magnetic head opposing gap adjustment mechanism 24...Pad roller 25...Fixed side plate 28...Eccentric adjustment shaft 28a...Small diameter shaft part 28b...Eccentric shaft part L...Opposing gap

Claims (1)

[Scope of utility model registration request] 1. A magnetic head facing gap adjustment mechanism for adjusting a facing gap between a magnetic head and a pad roller, which are disposed opposite to each other across a conveyance path for a conveyance medium, to a predetermined dimension and then attaching the magnetic head to a fixed member, the mechanism comprising: One end is allowed to rotate and is engaged with the fixed member, the eccentric shaft portion of the other end is allowed to be rotated and engaged with at least one of the magnetic head or the pad roller, and the one end engaging portion is used as a rotation fulcrum. A magnetic head opposing gap adjustment mechanism includes an eccentric adjustment shaft that eccentrically rotates an eccentric shaft portion of the other end engaging portion to move either the magnetic head or the pad roller in the opposing direction.