JPH03166143A - Motor mounting structure for card reader - Google Patents

Abstract

PURPOSE:To prevent poorly performed writing and reading of magnetic information due to error in motor installation and accomplishing high density recording by furnishing the basis for fixation with an aligning hole for fitting of the peripheral surface of a locational boss or the bearing of a transmission shaft. CONSTITUTION:In the sub-assembly process a motor 25 is installed to the mounting part 51B of a bracket 50. In the following general assembly process, an aligning hole 53 provided in the basis of the bracket 50 is fitted on a locational boss or the bearing 21b of a transmission shaft, and now the angle of intersection of a motor output shaft 26 with the transmission shaft and the span between the two shafts are determined.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a card reader that reads magnetic information recorded on a magnetic card such as a telephone card, and writes and confirms information on the magnetic card. In particular, it relates to a mounting structure for a drive motor used as a drive means for a card transport means. [Prior Art] In general, this type of force-reader that reads magnetic information recorded on each M&11 card such as a telephone card, and records and confirms information on a magnetic card uses a conveyor belt, etc. is used as a card transport means, and is operated by a drive motor. The most common mounting structure for such a drive motor is to fix it to a bracket attached to the device housing using a set screw. [Problems to be Solved by the Invention] By the way, magnetic information recorded on general magnetic cards such as telephone cards is written at a recording density of 0.12 m, so the rotation of the motor is not constant and the magnetic information is recorded on the magnetic card. When speed fluctuations occur, writing and reading errors, that is, jamming and loss of recorded information, occur, causing the problem that high-density writing cannot be performed. In other words, if a fluctuation of, for example, 0.3 degrees occurs due to speed fluctuations, this cannot be ignored because it corresponds to writing or reading failure for 2 bits, and high-density recording on IC cards, credit cards, etc. This is a big problem, especially if the card is One of the major causes of such writing errors is assembly error of the drive motor. These assembly errors include ■ error in the same distance between the output shaft and the transmission shaft, ■ error in mounting the motor to the bracket, and ■ angle error between the output shaft and the transmission shaft. If these errors are large, the rotation will not be transmitted properly. Since gear pack lash is greatly affected, assembly and adjustment work is troublesome, requires time and manpower, and is difficult to assemble automatically. Therefore, the present invention has been made in view of the above-mentioned conventional problems, and its purpose is to be able to assemble the motor without adjustment in the overall assembly process, shorten the assembly work, and realize automatic assembly. The purpose is to provide a motor housing structure for a card reader that makes it possible. [1,000 Steps to Solve the Problems] In order to achieve the above object, the present invention provides a drive motor that is attached via a motor mounting bracket to one side plate that forms the housing of the card reader, and a drive motor that is mounted between the side plate of the direct writing housing. A transmission shaft that is rotatably mounted horizontally via a bearing or a positioning boss and is perpendicular to the output shaft of the motor, and a transmission shaft that is provided on the transmission shaft and the output shaft, and that transmits the rotation of the output shaft to the transmission shaft. The motor mounting bracket integrally includes a fixed base fixed to one side plate of the housing, and a motor mounting part perpendicular to the fixed base to which the drive motor is fixed, The base is provided with a centering fitting hole into which the outer peripheral surface of the bearing or positioning boss is fitted. [Function] In the present invention, the drive motor is attached to the motor accommodating part of the motor accommodating bracket in the subassembly process, and in the overall assembly process, the centering fitting hole provided in the fixed base of the bracket is connected to the bearing of the transmission shaft. Or, when fitted to the positioning boss, the intersection angle between the motor output shaft and the transmission shaft and the distance between the shafts are determined. [Example] The present invention will be described in detail below based on an example shown in the drawings. FIG. 1 is an exploded perspective view showing an embodiment of the motor mounting structure according to the present invention, FIG. 2 is a plan view showing the inside of the card reader with the cover removed, and FIG. 3 is a schematic cross-sectional view of the card reader. Fig. 4 is a sectional view taken along line fV-IV in Fig. 2 of the same card league, and Fig. 5 is an exploded perspective view showing the mounting structure of the magnetic head. In these figures, 1 is a base that is long in the front-back direction, and 2 is a cover that covers the top surface of the base 1, which together constitute a box-shaped housing 3 that is long in the front-back direction. Said base 1
The system is integrally equipped with a bottom plate 4 and a pair of left and right side plates 5 and 6 which are provided at both ends of the bottom plate 4 and extend upwardly and downwardly, and which face each other in parallel. It forms a card guide surface 8 for guiding. Base white 1 and cover 2
A slit-shaped card insertion/return slot 9 into which the magnetic card 7 can be inserted is formed between the front end surfaces of the card at the same height as the card guide surface 8. Inside the housing 3, a card receiving passage IO communicating with the card insertion/returning port 9 and a card processing conveyance passage 11 provided continuously at the far end of the card receiving passage 10 are provided. Multiple sensors 12 for detecting cards
(12a to 12f), 1,000-stage card transport l3 that takes in the magnetic card 7 inserted into the card insertion/return slot 9 and moves it back and forth along the card processing transport path 11, and a shutter mechanism 14 that prevents insertion of the second card. , a magnetic head 1 that reads, writes, and confirms magnetic information on a magnetic card 7.
5. Touch roller 16 that presses the magnetic card 7 against the magnetic head l5; Punch machine side 1 that punches small holes in the magnetic card 7;
7 etc. W mechanisms and parts are incorporated. The card conveying means 13 includes a total of four card conveying means 13, each of which is arranged oppositely in the upper and lower directions, with one pair in the front and the rear across the card processing conveyance path l1.
rollers 20a to 20d, and bearings 2 on the base l, respectively.
1 (21a, 2lb, 21C-...), and a conveyor belt 23 stretched between upper rollers 20a, 20b. ．． The lower rollers 20c and 20d are the bottom plate 4 of the base 1.
The upper roller 2 is disposed on the lower surface side of the upper roller 2, and a part of the circumferential surface thereof protrudes from the opening 24 provided in the bottom plate 4 to the upper surface side of the bottom plate 4.
0a and 20b via a conveyor belt 23. The shaft 22b serves as a transmission shaft for transmitting the rotation of the drive motor 25 to the card conveying means 13, and one end of the shaft 22b protrudes outside the right side plate 6. A worm wheel 28 that meshes with a worm 27 provided on the output shaft 26 of 25 is housed. The shutter machine ml4 is located immediately after the card insertion/return slot 9 and opens the normal card intake passage 10.
When the first card is loaded, the power card insertion detection sensor 1
When operated by the card insertion detection signal from 2a, the card intake passage 10 is closed and the insertion of the second card is prevented. 30 and a sheet magnet 31 embedded in the lower surface of the cover 2, facing the magnet 30. The movable core 32 of the solenoid 30 is at the lowest position in the de-energized state and opens the card intake passage 10. When the solenoid 30 is energized and energized, it is pulled up and held by the sheet magnet 31, and the card is Close the intake passage 10. The punch mechanism 17 includes a punch stand 34 and a solenoid 35 that are arranged vertically opposite to each other with the card receiving passage 10 interposed therebetween.
It is a well-known method that is created in the past, and when the service ends,
By punching a small hole in the magnetic card 7, approximate information on the remaining balance is displayed depending on the position of the hole. Note that a bunch bin (not shown) is integrally provided at the upper end of the movable iron core 36 of the solenoid 35. The magnetic head 15 is attached to the inner surface of the center portion of the right side plate 6 of the base 1 via a head bracket 41. As shown in FIG. 5, the head bracket 41 is formed into a U-shape in plan view by bending a metal plate, so that the head fixing parts 42a, 42 facing each other in the front and rear are
b, and a connecting base 42c that connects one end of these head fixing parts 42a and 42b, and this connecting base 42
C is fixed to the inner surface of the side plate 6 with a set screw (not shown).A fitting hole 43 is formed at the upper end of the connecting base 42c, and this fitting hole 43 is connected to the transmission shaft. Bearing 2lb that pivotally supports one end of 22b (Figures 2 and 4)
It fits into a part of the outer circumferential surface of. The magnetic head 15 is inserted between the pair of head fixing parts 42a and 42b,
It is fixed with multiple setscrews 44. The rotation of the magnetic head 15 in the longitudinal direction and in the horizontal plane, that is, the inclination with respect to the transmission shaft 22b, is adjusted by means of a set screw 44 so that the center line in the longitudinal direction coincides with the transmission shaft 22b. Such installation and adjustment work for the magnetic head 15 is performed in the subassembly process, and after adjustment, resin is filled and solidified between the magnetic head 15 and the bracket 4l, making adjustment impossible, and completing the entire assembly process. In the side plate 6
It is installed together with bracket 4■. Note that the bearing 2lb is inserted into the bearing hole 45 provided in the side plate 6.
(FIG. 1, FIG. 2), and its both ends protrude inside and outside of the side plate 6.The drive motor 25 is mounted on a motor mounting bracket along the outer surface of the rear end of the side plate 6. As shown in FIG. 1, the bracket 50 is formed into an L-shape by bending a metal plate, and has a fixed base 51A perpendicular to each other and a motor mounting portion. 51B, and a direct fixation base 51A is fixed to the side plate 6 by a plurality of setscrews 52.
A centering fitting hole 53 that fits into a part of the outer peripheral surface of the bearing 2lb is provided in the upper part of the fixed base 51A. The drive motor 25 is fixed to the rear surface of the motor mounting portion 51B with a pair of setscrews 55, and its output shaft 26
is inserted into the insertion hole 56 provided in the center of the motor mounting portion 51B, and the worm 27 is positioned on the front side of the motor mounting portion 51B, whereby the worm 27 and the worm wheel 28 are engaged with each other. The adjustment work for mounting the drive motor 25 on the bracket 50 is performed using a mounting jig in the subassembly process. At this time, the center line of the centering fitting hole 53 and the output shaft 2
The intersecting angle (90 degrees) with the axis line of 6, the distance between the axes, and the distance from the output shaft 26 to the fixed base 51A are adjusted. Then, in the overall assembly process, the centering fitting hole 53
is fitted into the bearing 2lb, and the fixed base 51A is fixed to the side plate 6 with the setscrew 52. As a result, the drive motor 25
is positioned and fixed with high precision with respect to the transmission shaft 22b, eliminating the need for adjustment work in the overall assembly process. That is, as described above, the intersection angle between the center line of the centering fitting hole 53 and the axis of the output shaft 26, the distance between the axes, and the distance from the output shaft 26 to the fixed base 51A are determined in advance by ':JRW
If the bracket 50 is fixed to the side plate 6 so that the drive motor 25 is horizontal, the bearing 22b will fit into the centering fitting hole 53 and their axes will align, so the output shaft will be aligned. This is because the intersection angle between the transmission shaft 26 and the transmission shaft 22b and the distance between the shafts are correct, and the distance from the side plate 6 as a reference plane to the output shaft 26 is also set correctly. Therefore, it is possible to prevent failures in writing and reading magnetic information due to assembly errors in the drive motor 25, and there is no need to adjust the drive motor 25 in the overall assembly process, making it possible to achieve automatic assembly. In addition, although the above-mentioned embodiment explained the case where the centering fitting hole 53 of the motor housing bracket 50 is fitted to the bearing 2lb, the present invention is not limited to this. Of course, it is also possible to fit them together. [Effects of the Invention] As explained above, according to the motor mounting structure of the card reader according to the present invention, the drive motor can be mounted to the housing without adjustment, and assembly and adjustment work can be shortened and automatic assembly can be performed. It also has excellent effects such as preventing writing and reading errors in magnetic information due to motor assembly errors and enabling high-density recording.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the motor mounting structure according to the present invention, Fig. 2 is a plan view showing the inside of the card reader with the cover removed, and Fig. 3 is a schematic sectional view of the card reader. FIG. 4 is a sectional view taken along the line IV-fV in FIG. 2 of the same card reader, and FIG. 5 is an exploded perspective view showing the horizontal mounting structure of the magnetic head. 3... Housing, 5, 6... Side plate, 7... Magnetic card, 2lb... Bearing, 22b... Transmission shaft, 2
5... Drive motor, 26... Output shaft, 27... Worm, 28... Worm wheel, 50... Motor mounting bracket, 51A... Fixed base, 51B.
...Motor housing part, 53...Centering fitting hole 53. Figure 1

Claims (1)

[Scope of Claims] A drive motor is attached via a motor mounting bracket to one side plate forming a casing of the card reader, and a drive motor is rotatably mounted horizontally between the side plates of the casing via a bearing or a positioning boss; The motor mounting bracket is provided with a transmission shaft perpendicular to the output shaft of the motor, and a gear provided on the transmission shaft and the output shaft to transmit the rotation of the output shaft to the transmission shaft, and the motor mounting bracket is attached to the housing. It integrally includes a fixed base fixed to one side plate and a motor mounting part perpendicular to the fixed base to which the drive motor is fixed, and the outer peripheral surface of the bearing or positioning boss is fitted into the fixed base. A motor mounting structure for a card reader, characterized in that a centering fitting hole is provided.