JP2536237Y2 - Magnetic head fixing mechanism - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a magnetic head fixing mechanism incorporated in an automatic ticket gate device, a ticket vending machine, and the like installed at a station or a stop of transportation such as a railway.

(Prior Art) In a mechanism that uses a magnetic head to write and read information to and from a magnetic medium, an elastic body is usually used on the opposite side of the magnetic head across the transport path of the magnetic medium. A method is employed in which a pinch roller is provided so that the magnetic medium is brought into close contact with the magnetic head, and the driving force is reliably transmitted to the magnetic medium even during recording.

Further, the distance between the magnetic head and the pinch roller needs to be set to be equal to or slightly smaller than the thickness of the magnetic medium in order to achieve the above object.

However, it is impossible in this state to deal with dirt or magnetic media clogging adhered to the magnetic head, so that either the magnetic head or the pinch roller is moved to insert a cleaning tool or the like. In general, a mechanism for removing a magnetic medium or the like that has been sandwiched or for visually checking the degree of contamination or clogging has been incorporated (JP-B-57-29750, JP-A-61-61676).

(Problem to be solved by the invention) However, the conventional mechanism used for this purpose has the following disadvantages.

In other words, the mechanism that provides the pinch roller shaft on the movable lever (Japanese Patent Publication No. 57-29750) has a bearing on the sliding part between the support shaft and the boss of the movable lever to ensure the positioning accuracy of the pinch roller with respect to the head. It is necessary to take some countermeasures such as intervening, so that the number of parts is increased and the precision of the parts is required, which is expensive.

Further, when removing dirt or clogging of the magnetic medium attached to the magnetic head, the recording surface of the magnetic head cannot be exposed unless the pinch roller is held against the action of the biasing spring.

In the case of a mechanism using a method of removing the pinch roller in the axial direction (JP-A-61-61676), it is necessary to disassemble and remove each part, and the removed parts (knobs, pinch rollers) are cleaned. Must be temporarily stored in a suitable place, but in practice it is cumbersome to work while temporarily storing the removed parts at various installation locations, which is not efficient, and there is a risk that parts may be lost. there were.

Furthermore, as a problem common to the above conventional mechanisms,
In visually checking the state of the recording surface of the magnetic head mounted downward, it was very difficult to visually check the position of the mounting height.

In view of the above object, the present invention exposes the recording surface of the magnetic head at a position where it can be visually confirmed at the time of release, and also removes dirt attached to the magnetic head and the pinch roller and clogging of the magnetic medium by removing the individual components. An object of the present invention is to provide a magnetic head fixing mechanism that can be easily reassembled without disassembly and that can reproduce, with a single touch, a delicate positional relationship of the pinch rollers matched during initial adjustment when resetting.

Further, another problem of the present invention also exists in the following points.
That is, in an automatic ticket gate and the like, a plurality of belts that enable high-speed transport of tickets are stretched over the entire path in the transport device, and it is necessary to move the magnetic head so as not to interfere with it when performing maintenance or the like. is there. However, none of the prior arts satisfy the use under such a stretched condition.

(Means for Solving the Problems) In order to achieve the above object, in the magnetic head fixing mechanism of the present invention, an opening / closing shaft is provided on a head base, and the magnetic head can be displaced with the opening / closing shaft as a fulcrum.

Further, in a state in which the rotation knob and the hold block are engaged and the hold block is fitted to the adjustment screw screwed to the head base, the head base is pressed against the guide surface, so that no play occurs in any of up, down, left and right directions. The configuration was adopted.

(Operation) With the above configuration, in the set state, the magnetic head is fixed to the guide surface via the head base without any play.

Further, by turning the rotary knob, the above-mentioned fixed state is released and the head base can be lifted to the front, so that the recording surface of the magnetic head is exposed.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of the present embodiment in a set state, and FIG.
FIG. 1 is a partial sectional view taken along the line II of FIG. 1, FIG. 3 is a front view of the present embodiment, and FIG. 4 is a side view of the present embodiment in an open state.

1 to 3, reference numeral 1 denotes a magnetic head.
The head base 2 is screwed with a screw 3. The head base 2 has a structure rotatable about a head base shaft 4 fixed parallel to the guide surface 11.
An adjustment screw 5 is provided on the head base 2 and its height is variable.

Reference numeral 6 denotes a rotary shaft, which is a knob shaft fixed to the guide surface 11.
It is pivoted on. Reference numeral 8 denotes a hold block which is also supported by the knob shaft 7. The hold block 8 has a connection adjusting screw 9 on the opposite side of the guide surface 11. The connection adjusting screw 9 abuts a round hole (shown by a dotted line in FIG. 3) provided on the guide surface 11 side of the rotary knob 6, and its head is fitted, that is, fitted. On the other hand, the hold block 8 is pressed in a direction away from the guide surface 11 by a spring 10 so that the connection between the connection adjusting screw 9 and the rotary knob 6 is not released by the action of the spring 10. . Thus, whenever the rotary knob 6 is turned, the hold block 8 is also rotated accordingly. The abutment screw 12 is provided so as to be fixed by rotation to a predetermined position when the hold block 8 rotates about the knob shaft 7 as described above. As can be seen from FIG. The rotation knob 6 is disposed at a position where the rotation knob 6 is turned clockwise and abuts.

Reference numeral 13 denotes a pinch roller, which is rotatably stopped by a pinch roller shaft 14 fixed to the guide surface 11 via a bearing (not shown), and is driven by a conveyor belt 15 to make contact therewith.

Next, each state will be described. First, FIGS.
In the state shown in the drawing, that is, in the set state, the head base 2 is fixed and does not move because the hold block 8 overlaps and presses the head base 2 via the adjustment screw 5 attached thereto. The automatic ticket gates and the like are operated in this state.

When the rotary knob 6 is turned counterclockwise during maintenance cleaning or the like, the hold block 8 is disengaged from the adjustment screw 5 on the head base 2 so that the head base 2 can be opened and closed.
As a result, the magnetic head 1 can be lifted together with the head base 2 as shown in FIG. 4, and cleaning and visual confirmation can be performed.

To return to the set state, the operation may be performed in reverse, as can be seen from the description so far. That is, if the head 1 is returned to a predetermined position and the rotary knob 6 is turned clockwise in this state, the hold block 8 stops against the abutment screw 12 and stops, and the head base 2 is fixed. Is fixed constantly.

(Effects of the Invention) The present invention is configured as described above, and has the following effects.

By rotating the rotary knob, the fixed state of the head can be easily released, so that it is possible to easily insert a cleaning tool or remove a clogged magnetic medium or the like.

In addition, even if maintenance work such as cleaning is performed, the operable state can be easily restored without breaking the delicate positional relationship between the magnetic head and the pinch roller, and the accuracy of each unit is maintained.

Further, the pinch roller may have a structure in which the pinch roller is simply attached via a bearing to a pinch roller shaft screwed into a frame with a nut, and other parts can be turned except for some block parts. Screws that are distributed in the market at a unit price of less than 1 yen are frequently used, and the number of parts is small, so that it can be inexpensive and simple.

Further, since there is no need to disassemble and remove individual parts, there is no risk of parts being lost.

[Brief description of the drawings]

1 is a side view of the present embodiment in a set state, FIG. 2 is a partial cross-sectional view of FIG. 1-II, FIG. 3 is a front view of the present invention, and FIG. It is a side view in an open state. 1 ... magnetic head, 2 ... head base, 4 ... head base shaft, 5 ... adjustment screw, 6 ... rotary knob, 7 ... knob shaft, 8 ... hold block, 10 ... spring.

Claims (1)

(57) [Scope of request for utility model registration] 1. A guide surface (11) for guiding a magnetic medium by contacting an end surface of the magnetic medium, and a knob shaft (7) vertically mounted on the guide surface (11).
A rotary knob (6) rotatably mounted on the knob shaft (7); a hold block (8) rotatably provided on the knob shaft (7); and the knob shaft (7). And a spring (10) for urging the hold block (8) in the direction of the rotary knob (6); and a screw (8) screwed into the hold block (8). A connection adjusting screw (9) for adjusting the distance between the rotation knobs (6) and locking the hold block (8) and the rotation knob (6) together; and transporting the magnetic medium to the guide surface (11). A head base shaft (4) provided in parallel with the direction, a head base (2) rotatably mounted on the head base shaft (4), and a head base (2) mounted on the head base (2) to store information. Write to or read information from magnetic media And Mutame of the magnetic head (1), a pinch roller provided in parallel to the knob shaft (7) (1
3) an adjusting screw (5) screwed to the head base (2) to eliminate a gap with the hold block (8) when writing information to or reading information from the magnetic medium; When the magnetic head (1) writes information on the magnetic medium or reads information recorded on the magnetic medium, the magnetic head (1) includes the pinch roller (13) and the magnetic medium. The holding block (8) locked by the rotation knob (6) and the connection adjusting screw (9) by rotating the rotation knob (6) with a gap capable of holding the ) Is the magnetic head base (2)
A magnetic head fixing mechanism, wherein the fixing of the magnetic head (1) is released and the fixed magnetic head (1) is rotatable.