JP3235433B2 - Head position adjustment device and automatic ticket gate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head position adjusting device and an automatic ticket gate for adjusting a head gap between a magnetic head and a pad roller opposed thereto, for example.

[0002]

2. Description of the Related Art Conventionally, as a head position adjusting device for performing a minute slide by combining a linear motion bearing (so-called linear way) and a feed screw, there is a device having a structure shown in FIGS. That is, a magnetic head 60 having an eight-track structure for reading and / or writing magnetic recording information on a medium is provided, and a head gap G2 between the magnetic head 60 and a pad roller 61 disposed opposite to the magnetic head 60 is adjusted. The mounting bracket 62 is fixed to a surface 60a of the magnetic head 60 which is perpendicular to the medium transport direction (see the direction of arrow b in FIG. 6).
A tongue piece 62a is integrally formed on the upper portion of the base member, and a base member 63 fixed to the frame side is provided.
A linear way 64 is provided between the mounting bracket 3 and the mounting bracket 62 described above.

A screw portion 66 is screwed into a screw hole 65 formed in the base member 63, and a projection 67 integral with the screw portion 66 abuts against the lower surface of the tongue piece 62 a of the mounting bracket 62. The shaft body 6 integrated with the above-described screw portion 66
A driven gear 69 is fitted to the lower end of the gear 8, and a driving gear 72 is fitted to the rotating shaft 71 of the pulse motor 70 mounted on the motor mounting seat 63 a of the base member 63.
9, 72 are always engaged.

Further, two pin-shaped spring retainers 73, 73 extending downwardly of the mounting bracket 62 are provided on the lower side surface of the base member 63 (however, only one of them is shown in FIG. 5 for convenience of illustration). ), And a tension spring 74 is provided between each of the spring retainers 73 and 73 and the lower surface of the mounting bracket 62 described above.
And the lower surface of the tongue piece 62 a of the mounting bracket 62 is always in contact with the upper end of the protruding piece 67, so that the mounting bracket 62 follows the vertical movement of the shaft body 68.

According to this conventional apparatus, when a pulse signal is applied to the pulse motor 70 when the head gap G2 shown in FIG. 6 is variably adjusted, the shaft 68 is rotated via the rotating shaft 71, the driving gear 72, and the driven gear 69. Is rotated, the entire shaft body 68 is slightly slid upward or downward by the upward or downward screwing of the screw portion 66 screwed into the screw hole 65,
Since the magnetic head 60 follows the minute vertical movement of the shaft 68 via the linear way 64 and the mounting bracket 62, the above-described head gap G2 can be variably adjusted.

Here, in the above-described adjustment position of the magnetic head 60, when the medium enters the head gap G2 of the magnetic head 60, a load variation is applied to the magnetic head 60. It is necessary to always maintain a stable state with respect to fluctuations. For this reason, as the above-mentioned linear motion bearing, the above-described linear way 64 having extremely little backlash and having strength is used. When used, the space becomes large, which hinders the miniaturization of the head position adjusting device, and the cost of the head position adjusting device increases because the linear way 64 is expensive.

[0007]

According to a first aspect of the present invention, there is provided a moving member for moving a head in a specific direction, a movement of the head in a plane normal to the specific direction, and An object of the present invention is to provide a head position adjusting device in which an adjusting device is constituted by both an elastic member that allows movement of a head in a specific direction and the entire device can be made inexpensive and small while having a reliable adjusting function. I do.

According to a second aspect of the present invention, in addition to the object of the first aspect of the present invention, the above-mentioned moving member is set on a screw portion, so that a small micro-slide can be obtained with a simple structure. It is an object of the present invention to provide a head position adjusting device capable of obtaining an operation.

According to a third aspect of the present invention, in addition to the object of the first aspect, the above-mentioned elastic member is constituted by a leaf spring attached between the base member and the head. Although having a simple and inexpensive configuration, it is possible to reliably achieve the two functions of restricting the movement (prevention of movement) of the head in a plane whose normal line is the specific direction and permitting the movement of the head in the specific direction. It is intended to provide a position adjusting device.

According to a fourth aspect of the present invention, in addition to the object of the second or third aspect, the above-mentioned elastic member is constituted by a leaf spring attached so as to surround the above-mentioned screw portion. Accordingly, an object of the present invention is to provide a head position adjusting device capable of reliably laying out this elastic member even if the entire device is miniaturized and the arrangement space is narrowed.

A fifth object of the present invention is to provide an automatic ticket gate capable of achieving the object of the first, second, third or fourth invention.

[0012]

According to a first aspect of the present invention, there is provided a moving member for moving a head in a specific direction with respect to a base member, and a moving member for moving the head in a plane normal to the specific direction. An elastic member that regulates movement and allows the head to move in the specific direction is provided.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, there is provided a head position adjusting device in which the moving member is set to a screw portion.

According to a third aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the head has a structure in which the elastic member is constituted by a leaf spring attached between the base member and the head. It is a position adjusting device.

According to a fourth aspect of the present invention, in addition to the configuration of the second or third aspect of the present invention, the elastic member is a head position formed by a leaf spring attached so as to surround the screw portion. It is an adjusting device.

According to a fifth aspect of the present invention, there is provided an automatic ticket gate provided with the head position adjusting device according to the first, second, third or fourth aspect.

[0017]

According to the first aspect of the present invention, the moving member moves the head with respect to the base member in a specific direction, and the elastic member moves when the head is moved by the moving member. In addition, the movement (so-called co-rotation) of the head in a plane having the above-described specific direction as a normal line is restricted (prevented), and the movement of the above-mentioned head in the above-described specific direction is allowed. Since the head position adjusting device is constituted by the moving member and the elastic member as described above, the entire device is inexpensive as compared with a device using a conventional linear way (linear motion bearing) while providing a reliable adjusting device. In addition, there is an effect that the size can be reduced.

According to the invention described in claim 2 of the present invention,
In addition to the effect of the first aspect of the present invention, since the above-described moving member is set to the screw portion, when the screw portion is rotated once,
The distance by which the screw thread moves in the axial direction (that is, the lead represented by the product of the pitch and the number of threads) can be set to an arbitrary minute amount, and it is possible to obtain a reliable minute sliding operation with a simple structure. There is an effect that can be done.

According to the third aspect of the present invention,
In addition to the effect of the first aspect of the present invention, the above-mentioned elastic member is constituted by the leaf spring attached between the base member and the head, so that the above-mentioned leaf spring has a simple and inexpensive configuration. Because of the configuration extending between the two (the base member and the head), the head does not bend in a plane whose normal line is the above-described specific direction, so that the movement of the head in this plane can be regulated. Since the head is bent in a specific direction due to the configuration extending between the (base member and the head), the movement in the specific direction can be allowed. In other words, there is an effect that the two functions of restricting the movement of the head (preventing co-rotation) and permitting the movement of the head in a predetermined direction can be reliably achieved with a simple and inexpensive configuration.

According to a fourth aspect of the present invention, in addition to the effect of the second or third aspect, the elastic member is constituted by a leaf spring attached so as to surround the screw portion. Even if the entire head position adjusting device is reduced in size and the space for disposing the elastic member is reduced, the above-described leaf spring can be laid out without interference with other members.

According to the invention described in claim 5 of the present invention,
Since the head position adjusting device according to the first, second, third or fourth aspect is provided, an automatic ticket gate having the effects of the invention described in the first aspect can be obtained.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawings show an automatic ticket gate equipped with a head position adjusting device of the present invention. In FIGS. 1 and 2, the automatic ticket gate 11 includes a magnetic recording medium such as a commuter pass or a ticket inserted from a ticket slot 12, Ticket arranging section 1 having width adjusting roller 13
4, after the magnetic head 16 disposed in the magnetic processing unit 15 of the next stage performs reading or writing of magnetic recording information or both magnetic processing, A magnetic recording medium such as a commuter pass or a ticket is conveyed in a carry-out direction by a conveying line 17 and discharged from a ticket discharge port 18.

The pad roller 1 is attached to the magnetic head 16 described above.
9, a head position adjusting device 20 for adjusting a head gap G1 (see FIG. 4) between the magnetic head 16 and the pad roller 19 is configured as shown in FIGS.

That is, the tongue pieces 21a, 21b are vertically arranged on the surface 16a of the magnetic head 16 which is orthogonal to the direction of transport of the magnetic recording medium (see the direction of arrow a in FIG. 4).
, And a base member 22 fixed to the frame side is provided.

The base member 22 includes an upper piece 22a and a lower piece 2
2b and a vertical wall 22 connecting these pieces 22a and 22b in series.
c, and a screw portion 24 (so-called feed screw) is screwed into the screw hole 23 formed in the upper piece 22a. Also, the protrusion 25 integral with the screw portion 24 abuts against the concave portion 21c formed on the lower surface of the tongue piece 21a of the mounting bracket 21, while the shaft 26 integral with the screw portion 24 is attached to the tongue piece 21b.
The lower gear 22b is penetrated and extends downward, and a driven gear 27 is fitted to the extended end.

Further, the lower piece 22b of the base member 22 described above.
A pulse motor 28 is mounted on the upper surface, and its rotating shaft 29 is extended to the lower surface side of the lower piece 22b, and a driving gear 30 is fitted into the extended portion, and the driving gear 30 and the driven gear 2 described above are fitted.
7 is always meshed.

In addition, the upper piece 22 of the base member 22
a and the lower tongue piece 2 of the mounting bracket 21
A coil spring 31 is stretched between the upper surface of the shaft 1b and the protrusion 21 at the upper end of the shaft 26 so that the recess 21c on the mounting bracket 21 side is always in contact with the protrusion 21c. And the mounting bracket 21 follows the mounting bracket 21.

Further, between the base member 22 and the magnetic head 16 side, more specifically, between the top deck surface of the upper piece 22a of the base member 22 and the mounting bracket 21, a U-shape as viewed from a plane. Further, a leaf spring member 32 formed in an inverted L shape when viewed from the side is attached.

The leaf spring member 32 is provided in a plane whose normal line is the moving direction (vertical direction) of the magnetic head 16 by the screw portion 24 (that is, in a plane perpendicular to the axis of the shaft body 26). The leaf spring member 32 is a resilient member for regulating the movement of the head 16, that is, the co-rotation, and for allowing the movement of the magnetic head 16 in a specific direction (vertical direction). 24 and protruding piece 2
5 so as to exert an even co-rotational control function in both forward and reverse rotations of the screw portion 24, and the leaf spring member 32 rotates the screw portion 24. It is configured to prevent rattling of time.

In this embodiment, the base end of the above-described leaf spring member 32 bent in an inverted L-shape is fixed to the mounting bracket 21 by a stop block 33, and both legs are formed by stop blocks 34, 34. The base member 22 is fixed to the upper piece 22a.

In the automatic ticket gate configured as described above,
When a magnetic recording medium, such as a commuter pass (large ticket) or a ticket (small ticket), is inserted from the ticket slot 12 shown in FIG. The magnetic head 1 is then transported to the magnetic processing unit 15 at the next stage and
After the magnetic recording information is read or written or both magnetic processes are performed at 6, the information is conveyed in the unloading direction by driving the conveying line 17 and is discharged from the ticket discharge port 18.

Incidentally, the head position adjusting device 20 described above is used.
When adjusting the head gap G1 shown in FIG. 4 by applying a pulse signal to the pulse motor 28, the rotating shaft 29 rotates in either the forward or reverse direction in accordance with the applied signal. The screw 26 rotates through the driven gear 27 and the shaft 26 in the upward or downward screwing direction, causing the shaft 26 to move slightly up and down. Since the magnetic head 16 similarly moves up and down minutely via the bracket 21, the head gap G1 described above can be variably adjusted.

When the screw portion 24 rotates, the mounting bracket 21 and the magnetic head 16 try to rotate together, but the rotation can be reliably prevented by the leaf spring member 32 described above. In addition, the leaf spring member 32 is connected to the head gap G1 between the mounting bracket 21 and the magnetic head 16.
Movement in the variable adjustment direction is allowed due to its flexibility.

In short, the above-described moving member (screw portion 2)
4) moves the magnetic head 16 in a specific direction (vertical direction) with respect to the base member 22, and the above-mentioned elastic member (see the leaf spring member 32) moves the magnetic head 16 by the moving member (see the screw member 24). Sometimes, the movement (so-called co-rotation) of the magnetic head 16 in a plane whose normal line is the above-described specific direction is restricted (prevented), and the movement of the magnetic head 16 in the above-described specific direction is allowed. As described above, since the head position adjusting device 20 is constituted by the moving member (see the screw portion 24) and the elastic member (see the leaf spring member 32), the conventional linear way (linear motion) can be provided while providing a reliable adjusting device. This has the effect that the whole device can be made inexpensive and small in size as compared with a device using a bearing).

Further, since the above-mentioned moving member is set to the screw portion 24, when the screw portion 24 is rotated once, the distance by which the screw thread moves in the axial direction (that is, the lead represented by the product of the pitch and the number of threads). ) Can be set to an arbitrary minute amount, and there is an effect that a reliable minute slide operation can be obtained with a simple structure.

Further, the base member 22 and the magnetic head 16
The above-described elastic member is constituted by the leaf spring member 32 attached between the base member 2 and the base member 2 while having a simple and inexpensive configuration.
2. Due to the configuration extending between the magnetic heads 16), the magnetic head 16 does not bend in a plane normal to the above-described specific direction, so that the movement of the magnetic head 16 in this plane can be restricted, and the above-described leaf spring member The structure 32 extends between the two (the base member 22 and the magnetic head 16), so that the magnetic head 16 bends in a specific direction, so that movement in the specific direction can be allowed.

That is, while having a simple and inexpensive configuration, it is possible to reliably achieve the two functions of restricting the movement of the magnetic head 16 (preventing co-rotation) and permitting the movement of the magnetic head 16 in a predetermined direction. effective. In addition, since the elastic member is constituted by the leaf spring member 32 attached so as to surround the screw portion 24, the head position adjusting device 20 is provided.
Even if the whole is reduced in size and the space for disposing the elastic member is narrowed, the above-mentioned leaf spring member 32 can be laid out reliably without interfering with other members.

In correspondence between the configuration of the present invention and the above-described embodiment, the head of the present invention is the same as the magnetic head 1 of the embodiment.
6, the moving member corresponds to the screw portion 24, the elastic member corresponds to the leaf spring member 32, and the leaf spring corresponds to the leaf spring member 32. However, the present invention is not limited only to the configuration of the embodiment. For example, a DC motor with an encoder may be used instead of the pulse motor 28 described above.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an automatic ticket gate incorporating a head position adjusting device of the present invention.

FIG. 2 is an internal side view of the automatic ticket gate shown in FIG.

FIG. 3 is a perspective view showing a head position adjusting device of the present invention.

FIG. 4 is a longitudinal sectional view of a main part of the head position adjusting device.

FIG. 5 is a perspective view showing a conventional head position adjusting device.

FIG. 6 is a longitudinal sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 16 ... Magnetic head 22 ... Base member 24 ... Screw part 32 ... Leaf spring member

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 5/56 G07B 15/00 G07B 11/00 G07B 5/00

Claims (5)

(57) [Claims] A moving member for moving a head in a specific direction with respect to a base member, a movement of the head in a plane normal to the specific direction, and a movement of the head in the specific direction are allowed. And a head position adjusting device provided with an elastic member. 2. The apparatus according to claim 1, wherein said moving member is set to a screw portion.
The head position adjusting device as described in the above. 3. The head position adjusting device according to claim 1, wherein said elastic member comprises a leaf spring attached between said base member and said head. 4. A head position adjusting device according to claim 2, wherein said elastic member is constituted by a leaf spring attached so as to surround said screw portion. 5. An automatic ticket gate provided with the head position adjusting device according to claim 1, 2, 3, or 4.