JPH02215629A - Card carrying device - Google Patents

Abstract

PURPOSE:To reduce number of parts and assembling man/day, and enable to be superlight weighted and thin shaped, by constituting the device to be given a multi-mode vibration of primary vibration in the radial direction and vibration in non-axial-symmetry plane through supply of a driving signal to a piezoelectric element, and generating an elliptic motion on a mass point contacted with a motion transmitting face. CONSTITUTION:When alternating voltage of phase difference phi=90 degree is applied to a piezoelectric element 9, the piezoelectric element 9 generates multi-mode vibration of primary vibration in the radial direction and vibration in non-axial-symmetry plane, and generates elliptic motions of two mass points P1, P2 on the outer circumferential face mutually in the opposite rotating direction. When these mass points P1, P2 are contacted with motion transmitting faces 4a, 4b of a card carrying table 2, the card carrying table 2 is moved in the same direction as the rotating direction of elliptic motion at contacting by mutual friction between them. Meanwhile, at voltage of phase phi=-90 degree, the deforming direction of the piezoelectric element 9 is turned reversely, the rotating direction of elliptic motion at contacting is turned reversely, and the card carrying table 2 is moved in the reverse direction.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a card conveying device suitable for application to a card league such as a card-type vending machine, and particularly to a card conveying device that uses a linear ultrasonic motor as its drive source. Regarding the new card transport device used.

[Conventional technology]

Traditionally, card leagues built into card-type vending machines, etc., take in magnetic cards inserted into the card insertion slot, process them, and return them from the card return slot after the service is completed. Generally, a magnetic card is composed of a drive motor and a conveying means such as a roller or a conveyor belt that operates in response to rotational transmission from the drive motor and moves the magnetic card.

[Problem that the invention attempts to solve]

However, such a conventional card conveyance device includes a drive motor, a conveyance means, a bearing member for pivotally supporting the conveyance means, a gear for transmitting rotation of the drive motor to the conveyance means,
Rounding requires a rotation transmission mechanism such as a pulley, which requires a large number of parts and assembly man-hours, making it expensive. In addition, when gears are used, bank lash prevents highly accurate feeding and positioning, and motors and rollers Because of the size constraints, there was a limit to how thin and lightweight the device could be.

Therefore, the present invention solves the problems of the above-mentioned 1 to 3 conventional methods, and by using a linear ultrasonic motor as a driving means, it can significantly reduce the number of parts and assembly man-hours, and achieve ultra-lightweight and thin design. The object of the present invention is to provide a card transport device that enables the following.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a card carrier that holds cards, a guide that guides and holds the card carrier, and a part of the outer peripheral surface of which is attached to a motion transmission surface provided on the lower surface of the card carrier. A ring-shaped piezoelectric element is provided below the card carrier so as to be in contact with the card carrier, and all drive signals are supplied to the piezoelectric element. It is designed to give money.

[Effect]

In the present invention, when an AC voltage with a phase difference φ=90° is applied to the piezoelectric element button, the piezoelectric element arouses multi-mode vibration of radial first-order vibration and non-axisymmetric in-plane vibration, and two Generates an elliptical motion in which the rotational force direction is opposite to the mass point. Therefore, when it comes into contact with the motion transmission surface of the card carrier with the mass point, the mutual frictional force causes the card carrier to move in the same direction as the rotational direction of the elliptical motion at the time of contact, and the voltage phase difference φ = - When the angle is set to 90 degrees, the direction of strain of the piezoelectric element is also reversed, and the direction of rotation of the elliptical motion at the time of contact becomes the opposite direction, causing the card conveyance table to be transported backwards.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

Fig. 1 is a plan view showing an embodiment of a card conveying device according to the present invention, Fig. 2 is a sectional view, and Figs. 3 (-) and (b) are pressure points. It is a figure showing the vibration of an element. In these figures,
1 is a magnetic card such as a telephone card, 2 is a magnetic card 1
This card carrier 2 is a plate-shaped card carrier that holds
A card storage groove 3 for accommodating a magnetic card 1 is formed on the upper surface over the entire length in the longitudinal direction, and on the lower surface, opposing surfaces are motion transmission surfaces 4a, 4b & a pair of left and right protrusions 5A, 5B forming a card conveyance table. 2 in the longitudinal direction, i.e., the card transport direction (
They are arranged oppositely at an appropriate interval fif: so as to extend to both ends in the input direction). Reference numeral 6 denotes a base, and on this base 6, a pair of left and right guides 7A and 7B that extend long along the card conveying direction (direction A) are provided oppositely.
Guide grooves 8A and 8B are formed on the inner surface of the upper end of the card carrier 2 to guide and hold the opposite ends 2m and 2b of the card carrier 2 freely.
Between A and 7B, a ring-shaped piezoelectric element 9 made of PZT or the like, which constitutes the driving means of the card conveyance table 2, is used as a stator of a linear ultrasonic motor. The holding member 11 is disposed therebetween. This piezoelectric element 9 is inserted into a piezoelectric element storage groove 11 formed in a pair of left and right protrusions 5A and 5B on the lower surface of the card carrier 2, and two mass points Pl+PI located at symmetrical positions on the outer peripheral surface They are in line contact with the motion transmission surfaces 4m and 4b of the protrusions 5A and 5B, respectively, and are spaced apart from the lower surface of the card carrier 2. The surface of the piezoelectric confectionery 90 is divided into two in the circumferential direction, resulting in two regions B1+ Bg tlK
L, the collerano areas Bt and B2 are fan-shaped with an opening angle of 18o0, in other words, a square shape, the straight line part of the core area B1+Bl is perpendicular to the card conveyance direction, and both ends thereof are connected to the movement transmission surfaces 4a and 4b. Contacting mass point PhP!
It is said that

In the card conveying device having such a configuration, the bottom surface of the piezoelectric element 9 is grounded, and a frequency of 30 KHz is applied to the region J, 13.
~40KHz alternating voltage sin QJt, eos
When ωt is applied to each, pressure! When the inner diameter/outer diameter of the element 9 is a certain value (0, 27), the piezoelectric cable 9 experiences primary vibration in the radial direction (R, 1) and non-axisymmetric in-plane vibration (1° 1)).
multimode vibrations occur simultaneously. The primary vibration (R, 1) in the radial direction is indicated by the arrow DI'+D in Figure 3 (,),
When extending in the direction of the arrow D1, the mass points p, , pR come into contact with the motion transmission surfaces 4a, 4b, and the arrow D! When it contracts in the direction of force,
The mass point P 1 *P 1 is separated from the motion transmission surface 14b. Non-axisymmetric in-plane vibration ((l, l)) is a standing wave that expands and contracts in the same direction as the card transport direction A and in the opposite direction, as shown by the arrow E1E in FIG. 3(b), and the vibration direction E , is tuned to Dl, and E, is tuned to B3. When these standing waves interfere with each other and are combined, multi-mode imaging with different amplitudes occurs at each point on the outer circumferential surface, and this vibration causes contact between the piezoelectric element 9 and the card carrier 2. The frictional force caused by this is converted into the conveying force of the card conveying table 2.

That is, among the mass points on the outer circumferential surface of the piezoelectric element 9, two mass points P 1 + P are in contact with the motion transmission surfaces 48 and 4b.
Focusing on the winnow, these mass points P1+P1 become mass points Pi due to the multi-mode vibration of the piezoelectric element 9 itself.

Elliptical motion Fl rotating in the same direction as the vibration direction E1 of Pl
(See Figure 4). Two mass points p1. (P, as described above) When the piezoelectric element 9 extends in the direction of arrow D1, it contacts the motion transmission surface 4b, and when it contracts in the direction of arrow D2, it contacts the motion transmission surface 48, 4b.
In order to separate from the card carrier 2, the frictional force between them at the time of contact causes the card carrier 2 to move a small amount in the rotational direction of the elliptical motion F1 of the mass point P1+Pl (direction A in FIG. 4), and as time passes, the card carrier 2 moves in the direction D8. When the material point P1+P1 is separated from the motion transmission surfaces 4a and 4b, the card transport table 2
By repeating such an operation, the card conveyance table 2 can be moved in a fixed direction at a fixed speed.

As a result, the magnetic card 1 is moved to the desired position along the guides 7A and 7B together with the card transport table 2.
If the phase difference of the voltage applied to the piezoelectric element 9 is completely reversed, the periods of the radial primary vibration and the non-axisymmetric in-plane vibration will be in the opposite direction to the above, so the mass point P.

When P8 is in elliptical motion in the direction of Fig. 4F, the nuclear mass point P
1+Pj contacts the motion transmission surfaces 4m and 4, and moves the card carrier 2 in the direction opposite to the direction of arrow A, allowing the skeleton card carrier 2 to reciprocate.

〔Effect of the invention〕

As described above, the card conveying device according to the present invention has a ring-shaped pressure 1! The element 1c is used as a driving source, and multimode vibration is generated by combining the primary vibration in the radial direction of this piezoelectric element and the non-axisymmetric in-plane vibration, and the two mass points on the outer circumferential surface move in an ellipse. , the card carrier is moved along all the guides by the frictional force between the mass point and the card carrier due to this elliptical motion,
Drive motors and rollers that were previously considered indispensable
In addition, there is no need for conveyance means such as conveyor belts, reducing the number of parts.
It is possible to make the card significantly lighter and thinner, and there is no effect of bank crash caused by gears, so cards can be moved with high precision.
It can be positioned easily and the car reader can be made lighter and thinner.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing embodiments of a card conveyance device according to the present invention, Fig. 2 is a sectional view, Figs. -), O)) are diagrams for explaining the driving principle of the present invention. 1 $11+1・Magnetic card, 2 a s * e-card transfer platform, 4b...Motion transmission surface, 7A, 7B
... e-guide, 9-... piezoelectric element, PhP 2-
...Material point. Figure 1

Claims (1)

[Claims] A card carrier that holds a card; a guide that guides and holds the card carrier; and a guide that guides and holds the card carrier; A ring-shaped piezoelectric element is provided, and a drive signal is supplied to the piezoelectric element to provide multi-mode vibration of primary vibration in the radial direction and non-axisymmetric in-plane vibration, thereby transmitting the motion of the outer circumferential surface. A card conveying device that generates elliptical motion in a mass point in contact with a surface, the rotational direction of which is the same as the card movement direction.