JP2002236880A - Carriage moving mechanism and operation method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply a carriage moving mechanism to a small device. SOLUTION: The carriage moving mechanism 29 is constituted by installing moving objects 5 (5a and 5b) on carriages 13 by arranging the carriages 13 (13a and 13b) for moving in the prescribed direction in a loop-shaped member 12 driven by a motor 10 with the motor 10 as a driving source. Here, the loop- shaped member 12 is extended between two rollers 14a and 14b, and is rotated by the motor 10. A loop having two parallel parts 12x and 12y is constituted. The carriage 13a is fixed to one (for example, 12x) among the two parallel parts 12x and 12y for constituting the loop. The carriage 13a is extendedly formed up to the other parallel part 12y. A movement of the carriage 13a is guided by the other parallel part 12y.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a carriage moving mechanism and a method of operating the same. More specifically, the present invention relates to an improvement in the structure of a carriage moving mechanism that moves a carriage provided on a loop-shaped member in a predetermined direction.

[0002]

2. Description of the Related Art Conventionally, a table capable of moving in a predetermined direction by mounting or mounting an information recording medium or a recording head (in this specification, such an object is mounted or moved by mounting a certain object) The table is referred to as a “carriage”).

[0003] Such a carriage moving mechanism for moving the carriage is generally employed in the apparatus disclosed in Japanese Patent Publication No. 5-42068, for example, as shown in FIG.
, A guide member 103 for regulating the rotation of the carriage 101, and the drive belt 10
4.

[0004] In addition, as in an apparatus described in Japanese Patent Publication No. 7-31867, for example, the carriage 1 is driven by two shafts.
01 and the drive belt 10 while controlling the rotation.
In some cases, the carriage 101 is reciprocated by rotating the carriage 101 in one direction.

[0005]

However, the above-described carriage moving mechanism cannot be used for a small device because the slide shaft 102, the guide member 103, the drive belt 104, and the like require a large space. is there. In particular, if the slide shaft 102 and the guide member 103 are arranged on both sides of the carriage 101 as shown in FIG. 16, a larger space may be required, and downsizing is difficult.

Accordingly, an object of the present invention is to provide a carriage moving mechanism applicable to a small apparatus and an operation method thereof.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a motor is used as a drive source, and a carriage that moves in a predetermined direction is provided on a loop-shaped member driven by the motor. In a carriage moving mechanism configured to attach a moving body to a loop, a loop-shaped member is looped over two rollers, rotated by a motor, and forms a loop having two parallel portions, thereby forming a loop. The carriage is fixed to one of the two parallel portions, and the carriage is extended to the other parallel portion so that the movement of the carriage is guided by the other parallel portion.

Accordingly, when the loop-shaped member is rotated by the motor, the one parallel portion and the other parallel portion move in opposite directions, and the carriage moves in one direction together with the one parallel portion. At this time, the parallel part on the other side guides the extension forming part of the carriage while moving in the opposite direction,
Prevents the carriage from rotating around one parallel part. For this reason, the carriage moves in parallel in a predetermined direction without rotating around the axis of the parallel portion.

In this case, the loop-shaped member has a function of a drive belt for driving the carriage and a function of a guide shaft and a slide member for guiding and rotating the carriage. For this reason, the carriage moving mechanism can be configured without separately providing the guide shaft, the slide member, and the like, and the size can be reduced. In addition, the cost can be easily reduced.

According to a second aspect of the present invention, in the carriage moving mechanism according to the first aspect, two carriages are provided, and when one of the carriages is fixed to one of two parallel portions forming a loop, the other of the two parallel portions constitutes a loop. The carriage is fixed to the other of the two parallel portions.

In this case, since the carriage is provided in each of the upper and lower parallel portions of the loop-shaped member, the two carriages can be simultaneously moved in different directions by rotating one drive source (motor) in a single direction. . Therefore, a structure in which the space is reduced and the cost is reduced can be realized. Moreover, like the carriage on one side, the carriage on the other side is guided by the parallel portion of the loop-shaped member.
Translate parallel without rotating about the axis of the parallel part.

According to a third aspect of the present invention, in the carriage moving mechanism according to the second aspect, the carriage is a moving member to which a foreign object detecting member for detecting a foreign object inserted into the inside of the card reader is attached, and the motor is a stepping motor. When the foreign object detecting member is moved in a direction transverse to the card travel path, the carriage moves about half of the card travel path.

In this carriage moving mechanism, when the stepping motor is driven, the carriage (moving member)
Moves in the transverse direction together with the foreign matter detection member. The foreign object detection member detects a foreign object in the card reader by being hooked during the movement. In this case, a plurality of carriages are provided,
By setting the moving distance of the carriage to about half of the card travel path, the time required for foreign object detection can be shortened.

According to a fourth aspect of the present invention, in the carriage moving mechanism according to any one of the first to third aspects,
The carriage is a carriage on which the card is placed,
Either a carriage to which a magnetic head is attached, or a moving member to which a foreign substance detecting member for detecting a foreign substance inserted into the inside of the card reader is attached. According to the present invention, it is possible to reduce the size and cost of the carriage moving mechanism regardless of the mode of the carriage.

According to a fifth aspect of the present invention, in the carriage moving mechanism according to the third aspect, the foreign matter detecting member includes a foreign matter engaging portion that engages with a foreign matter in both directions in which the foreign matter detecting member moves. In this case, the foreign object detecting member can engage the foreign object when moving in any direction.
Therefore, by detecting foreign substances that could not be detected by scanning in one direction during rescanning in the reverse direction, detection omissions can be reduced. In addition, detection omission when the foreign matter is in the form of a wide sheet is reduced.

According to a sixth aspect of the present invention, in the carriage moving mechanism according to the fifth aspect, a home for detecting that the foreign object detection member is located at the home position via an intermediate member with which the tip end side of the foreign object detection member abuts. It has a position sensor. In this case, the home position sensor can detect whether the foreign matter detection member is located at the home position and also determine whether the distal end side of the foreign matter detection member is missing.

According to a seventh aspect of the present invention, in the operation method of the carriage moving mechanism, the loop-shaped member is extended between the two rollers.
Forming a loop having two parallel portions, and fixing one moving member attached with a foreign object detection member for detecting a foreign object inserted inside the card reader to one of the two parallel portions forming the loop, One moving member is formed to extend to the other parallel portion, the movement of the moving member is guided by the other parallel portion, the other moving member is fixed to the other of the two parallel portions, and a pair of foreign object detecting members is formed. The card is reciprocated so as to approach and separate from each other in a direction transverse to the card travel path.

Therefore, when the loop-shaped member is rotated, one parallel portion and the other parallel portion move in opposite directions, one moving member moves in one direction together with the one parallel portion, and the other moving member moves. Moves in the opposite direction with the other parallel part. That is, the pair of moving members move so as to approach or separate from each other. At this time, the parallel portion on the other side guides the extended portion of one moving member while moving in the opposite direction, and prevents this moving member from rotating around the one parallel portion. Therefore, one of the moving members moves in parallel in a predetermined direction without rotating around the axis of the parallel portion. The same is true for the other moving member, and there is no rotation around one parallel portion.

In this case, the loop-shaped member has a function of a drive belt for driving the moving member, and a function of a guide shaft and a slide member for guiding and rotating the moving member. For this reason, the carriage moving mechanism can be configured without separately providing the guide shaft, the slide member, and the like, which is advantageous in reducing the size of the mechanism employing this operation method. In addition, the cost can be easily reduced.

According to an eighth aspect of the present invention, in the operating method of the carriage moving mechanism according to the seventh aspect, the foreign matter detecting member includes a foreign matter engaging portion for engaging with foreign matter in both directions in which the foreign matter detecting member moves. I have. In this case, the foreign object detecting member can engage the foreign object when moving in any direction. Therefore, by detecting foreign substances that could not be detected by scanning in one direction during rescanning in the reverse direction, detection omissions can be reduced. In addition, detection omission when the foreign matter is in the form of a wide sheet is reduced.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail based on an example of an embodiment shown in the drawings.

1 to 10 show a carriage moving mechanism according to the present invention. The carriage moving mechanism 29 includes a motor 10
Is provided as a drive source, and a carriage 13 that moves in a predetermined direction is provided on a loop-shaped member 12 driven by a motor 10,
The moving body 5 is attached to the carriage 13. In the present embodiment, the loop-shaped member 1
2 is wound between two rollers 14 and rotated by the motor 10 to form a loop having two parallel portions 12x and 12y, and the two parallel portions 1 forming the loop are formed.
The carriage 13a is fixed to one of the 2x and 12y, and the carriage 13a is connected to the other parallel portion 12y.
And the other parallel portion 12y guides the movement of the carriage 13a.

In the following, as a preferred embodiment of the present invention, the present invention is applied to a foreign substance detecting mechanism 1 of a card reader,
1 shows a carriage moving mechanism 29 for moving a member for detecting the movement of the carriage. The card reader shown in this embodiment is provided with a foreign object detection mechanism 1 for detecting a foreign object 3 other than the card 2 on a card running path 4 on which the card 2 runs, as shown in FIGS. The foreign matter detection mechanism 1 includes a moving body 5 having a foreign matter engaging portion 6 (hereinafter referred to as a “foreign matter detection member 5”), a moving mechanism 7 for moving the foreign matter detection member 5, and a foreign matter 3 Detecting means 8 for detecting the presence or absence
It is composed of

Here, in order to perform the foreign substance detection, it suffices if one set of the foreign substance detection mechanism 1 is provided (in this specification, the constituent units of the foreign substance detection mechanism 1 are represented as a set). It is preferable that a plurality of foreign matter detecting mechanisms 1 are provided to detect a direction transverse to the card travel path 4 by a plurality of foreign matter detecting mechanisms 1. In the present embodiment, two sets of the foreign substance detection mechanism 1 are provided as a pair. Therefore, the carriage 13 is also 2
Are provided. In the present embodiment, a pair of members (for example, the foreign object detection member 5 and the detection unit 8) are provided with a suffix a or b to indicate a pair.

The card reader has a shutter plate 22 for opening and closing the card travel path 4. Although the shutter plate 22 will not be described in detail in this specification, the shutter plate 22 is rotatably supported at both ends by, for example, links, and moves up and down as shown in FIG. ing. Then, the foreign substance detection mechanism 1
Is provided behind the shutter plate 22 as shown in FIG. 4, and detects foreign matter 3 in an area deeper than the shutter plate 22.

The moving mechanism 7 is a mechanism for moving the foreign object detecting member 5 in a direction transverse to the card travel path 4, and in the present embodiment, a stepping motor (hereinafter, referred to as "stepping motor 10") as the motor 10, Gear train 11,
A wire as the loop-shaped member 12 (hereinafter referred to as “wire 1
2), a carriage 13 and a roller 14, and are provided separately from a card transport mechanism (not shown). The rotational force of the stepping motor 10 is transmitted to one roller 14a via the gear train 11.

The wire 12 has rollers 14a, 1 at both ends.
4b, it is stretched in a loop in the cross direction of the card, and rotates in any direction by receiving a rotational force. In this case, the wire 12 is connected to the rollers 14a and 14b as shown in FIG.
Two parallel portions 12x and 12y are formed between them.

A pair of carriages 13a and 13b are attached to the wire 12. The carriages 13a and 13b are moved in opposite directions. For example, one of the carriages 13a is located on the upper parallel portion 12x of the wire 12 at a fixed portion indicated by reference numeral 27a, and the other carriage 13b is located below the wire 12 at the fixed portion 27b. Each is fixed to the side parallel part 12y. in this case,
When the wire 12 rotates counterclockwise as shown in FIG. 1, the carriage 13a moves leftward in FIG.
Moves to the right.

The carriages 13a and 13b have guide portions 28a and 28b for guiding the carriage itself. The guide portions 28a and 28b are provided on the carriage 13 main body as illustrated in order to penetrate the parallel portion 12y (or 12x) opposite to the wire parallel portion 12x (or 12y) fixed by the fixing portion 27, for example. It is a through hole. The carriage 13 provided with such guide portions 28a and 28b can move along the wire 12 without rotating in the twisting direction of the wire 12.

The carriages 13a and 13b are provided with foreign matter detecting members 5 (5a and 5b) for detecting foreign matter 3 inserted into the card reader. The foreign object detecting member 5 has a foreign object engaging portion 6, and is rotatably attached. These foreign object detecting members 5a and 5b are urged by a torsion coil spring 15 as shown in FIG.
It is possible to advance and retreat with respect to the card travel path 4. As a result, the foreign object detecting members 5a and 5b move in the transverse direction while being located up to the card travel path 4 when there is no card 2, and move in the transverse direction at the position where they come into contact with the card 2 when there is the card 2. A scan is made to see if there is any foreign substance 3 on the traveling path 4.

The foreign substance engaging portions 6a and 6b provided on the foreign substance detecting members 5a and 5b are formed so as to catch the foreign substance 3 and move it to the side when the foreign substance 3 exists in the card travel path 4. ing. In the present embodiment, the foreign matter engaging portions 6a and 6b are formed of plate-like portions 24 having a predetermined thickness, and are formed in a hook shape as shown in FIG. 3 so that the foreign matter 3 is easily hooked when the foreign material 3 is in a thread shape. ing. The plate portion 24 is a sheet metal or a resin plate, and has a laminated structure in which a middle sheet metal is sandwiched between two resin plates as shown in FIG.

Further, in the present embodiment, the foreign matter engaging portions 6a,
6b, which is in contact with the card 2 (indicated by reference numeral 19 in the figure)
Is formed into a gentle curve as shown in FIG. 3, and the protruding end portion 16 is rounded so as not to be caught on the bent surface of the card 2 or the embossment of the card 2.
Alternatively, although not particularly shown, a roller or the like may be provided on the protruding end portion 16 instead of being rounded, or a surface treatment for making it slippery may be performed.

As shown in FIG. 3, each of the foreign material engaging portions 6a and 6b includes a cutting blade 17 (17a and 17b) and a guide 18 (18a and 18b) for guiding the foreign material 3 to the cutting blade 17. preferable. In the present embodiment, the cut surface is exposed by shifting the cut of the foreign matter engaging portion 6 left and right by shearing, and the cutting edges 17a and 17b are formed by the unevenly opened shear surfaces (or shear edges), thereby forming a thread-like shape. A part of the foreign matter 3 is hooked and moved reliably, and when the foreign matter 3 is thin, it can be cut. Guide section 1
8a and 18b are inclined edges connected to the cutting blades 17a and 17b provided at the valleys of the foreign matter engaging portions 6a and 6b.

Further, the thread-like foreign matter 3 is utilized by utilizing the card conveying force.
May be cut. That is, when the card 2 is conveyed, the thread-like foreign material 3 can be pressed against the cutting blade portion 17 by the tension generated when the card 2 hooks and pulls the thread-like foreign material 3, thereby cutting the card. In this case, the position of the foreign object detecting member 5 is maintained by the holding force of the stepping motor 10 so as not to be retracted due to the tension of the thread-like foreign object 3.

In this embodiment, as described above, two sets of foreign object detecting mechanisms 1 are provided, and as shown by imaginary lines in FIG. 1, the center position where the left and right foreign object detecting members 5a and 5b abut each other is set to these positions. The home position of the foreign object detecting members 5a and 5b is set. Whether or not the foreign object detection members 5a and 5b are located at the home position can be detected by the home position sensor 20 including, for example, an optical sensor. Further, the foreign object detecting members 5a and 5b abut against each other at the home position, and the abutting portions 23 (23) for rotating the foreign object engaging portions 6a and 6b so as to retreat from the card travel path 4.
a, 23b), it is retracted at the home position with the foreign matter engaging portions 6a, 6b crossing each other (see FIG. 1).

Further, the foreign object detecting members 5a and 5b
As shown in the figure, the protruding restricting portions 25 (25a, 25b)
Is provided. The restricting portion 25 abuts on the protruding portions 26 (26a, 26b) provided on the carriage 13 to maintain the rising ranges of the foreign substance detecting portions 5a, 5b within an appropriate range.

The pair of foreign substance detecting members 5a and 5b
In the direction transverse to the card travel path 4, the card travel path 4
From the center (home position) to the outside (card path 4
Side). At this time, the scanning strokes of the foreign object detecting members 5a and 5b are adjusted to be wider than the card width so that a range larger than the card width is detected. In this case, if the two sets of foreign object detection mechanisms 1 perform overlapping scanning at the central portion, there is no detection omission. In the present embodiment, each of the foreign substance detecting members 5a and 5b (and the carriages 13a and 13b) only needs to scan about half the width of the card travel path 4, so that the time required for detection is short.

Further, the foreign substance detecting mechanism 1 is located outside the card travel path 4 and detects the presence or absence of the foreign substance 3 at the end of the scanning stroke of the foreign substance detecting members 5a and 5b.
(8a, 8b). In this embodiment, the detecting means 8 is constituted by the optical sensor 21 (21a, 21b), and the concave portion 9 (9a, 9b) into which the plate-shaped portion 24 of the foreign substance detecting members 5a, 5b enters is provided. The width of 9b is formed to be larger than the width of the plate portion 24 in a range smaller than the size of the foreign material 3 to be detected (see FIG. 10). In such a case, if the foreign matter 3 is thicker than the gap width between the concave portion 9 and the plate-like portion 24, the foreign matter detecting members 5a and 5b which have caught the foreign material 3 do not fit into the concave portion 9, so that the foreign matter detection in the protruding state is prevented. The members 5a and 5b can be detected by the detecting means 8. On the other hand, the foreign material 3 thin enough to be able to enter between the concave portion 9 and the plate-like portion 24 can be cut by the above-described cutting blade 17.

Next, the operation of the foreign object detecting mechanism 1 of the present embodiment will be described.

In the card insertion waiting state, the foreign object detecting members 5a and 5b are located at the home positions and are retracted from the card running path 4.

When the card 2 is inserted, the card 2 is temporarily stopped after the insertion, and the stepping motor 10 is driven to drive the carriages 13a and 13b right and left. Specifically, as shown in FIG. 1, the wire 12 is rotated counterclockwise to move the carriages 13a and 13b in a direction away from each other. At this time, the movement of the card 2 by the card transport mechanism and the foreign matter 3 by the
The card 2 is located at the position of the foreign matter detecting member 5 in order to perform the cutting. Foreign object detecting members 5a, 5b
Moves away from the home position and tries to raise the foreign matter engaging portions 6a and 6b. However, since the card 2 is on the upper side, the protruding end portion 16 contacts the card 2 and the rising is regulated.
Is scanned left and right from the home position to the outside while in contact with the back surface of the camera.

Here, when the thread-like foreign matter 3 is set on the card reader, the thread-like foreign matter 3 is caught on the foreign matter engaging portions 6a, 6b of the foreign matter detection members 5a, 5b. When the foreign matter 3 is short, the foreign matter 3 can be detected by scanning the foreign matter detecting members 5a and 5b as they are, thereby hindering the carriage operation. On the other hand, when the thread-like foreign matter 3 is long, the foreign matter detecting members 5a and 5b that have caught the thread-like foreign matter 3 are detected by the detection means 8a and 8b without entering the recesses 9a and 9b. When the foreign object 3 is detected, the processing of the card 2 is interrupted and the card 2 is returned to the user.

The above is the case where the thread-like foreign material 3 is thicker than the gap of the concave portion 9. Conversely, when the thread-like foreign material 3 is thinner than the gap of the concave portion 9, as shown in FIG. Can enter the recess 9. In such a case, the thin thread-like foreign matter 3 can be cut by the cutting blade 17 of the foreign matter detection member 5.

It is needless to say that scanning and detection can be performed by the foreign object detecting members 5a and 5b even when the card 2 is not inserted, contrary to the above case. In this case, since there is no standing regulation by the card 2, the foreign matter detecting members 5a and 5b can scan the entire area of the card running path 4 in the card thickness direction.

As described above, in the carriage moving mechanism 29 of the present embodiment, when the foreign object detecting member 5 does not have the card 2, the foreign matter detecting member 5 scans the entire area of the card traveling path 4 as in the conventional case. In some cases, it retracts to a position where it contacts the card surface, and scans at least all areas other than the area blocked by the card 2. In other words, even when the card 2 is present, since at least one area where the card 2 is partitioned is scanned, the foreign matter 3 even after the card is inserted, particularly a thread-like foreign matter that straddles both sides of the card 2 as shown in FIG. 3 can be detected.

Therefore, even if, for example, the thread-like foreign matter 3 enters the card travel path 4 when the card is inserted, the foreign matter 3 can be detected by scanning after inserting the card. In addition, when the foreign matter 3 is in the form of a thread, it can be detected whether the thread is stretched or loosened, and a high detection ability is exhibited, so that the security of the card reader can be further enhanced.

In addition, the cutting edge 17 is provided on the foreign matter engaging portion 6 of the foreign matter detecting member 5, and the foreign matter detecting member 5 is moved in the transverse direction so that the other than the cutting edge 17 is brought into contact with the card surface. Since the card 2 is moved, the foreign matter 3 can be
Can be detected. Moreover, the recess 9 and the plate-like portion 24
When the thread-like foreign matter 3 that cannot be detected by the detection means 8 is hooked and can be cut off in the middle, it can be cut in the middle. Can be prevented.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the carriage 13 has been described as a moving member to which the foreign substance detecting member 5 for detecting the foreign substance 3 inserted into the card reader is attached. 2 can be used as the carriage 13 or the carriage 13 to which the magnetic head is attached.

In the detecting means 8 of this embodiment, when the foreign substance 3 does not enter the recess 9 because the foreign substance 3 is in the way, the foreign substance 3 is detected by detecting the foreign substance detecting member 5 with the optical sensor 21. However, the configuration of the detection means 8 is not limited to such a configuration. Although not described in detail here, for example, the presence of the foreign matter 3 may be detected by a mechanical sensor that moves with a tension lower than the tension of the thread-like foreign matter 3. Alternatively, the moving lever that scans just before the concave portion 9 may be operated to mechanically detect the position depending on whether or not the foreign material detecting member 5 that has not entered the concave portion 9 comes into contact. Further, a pair of metal pieces are arranged to face each other, and when the thread-like foreign matter 3 is sandwiched between them, the metal piece cannot be brought into contact with each other, and whether or not there is the thread-like foreign matter 3 is electrically detected from a change in capacitance. Is also good.

Further, the carriage moving mechanism 2 of the present embodiment
In FIG. 9, the foreign matter detection member 5 is moved by using the wire 12, but another loop-shaped member such as a belt may be used instead of the wire 12. Also, wire 1
A DC motor or the like may be used instead of the stepping motor 10 as the driving source such as 2.

Up to this point, two sets of the foreign substance detection mechanisms 1 have been provided, and the pair of foreign substance detection members 5a and 5b have been simultaneously moved from the center to the outside. However, only one set of the foreign substance detection mechanisms 1 has been used. The whole area may be scanned by one foreign matter detecting member 5. In this case, it is necessary to move the foreign object detecting member 5 from one end to the other end by lengthening the scanning stroke, but since the foreign object detecting mechanism 1 can be constituted by one member, it is simpler than the foreign object detecting mechanism 1 of the present embodiment. Configuration.

In this embodiment, the guide portions 28a, 28
As an example of 8b, a wire through-hole provided in the carriage 13 has been described, but the invention is not limited to this. For example, the guides 28a and 28b may be formed by an engagement groove having a stopper for preventing the wire 12 from coming off.

In the above-described embodiment, an example in which the carriage 13 is applied to the foreign matter detection mechanism 1 has been described.
The present invention can be applied to a carriage moving mechanism that moves a card or the like in a predetermined direction.

Next, a second embodiment of the present invention will be described. In the present embodiment, as shown in FIG. 13, a foreign substance engaging portion is provided for each of the foreign substance detection members 5a and 5b in both directions in which the foreign substance detection members 5a and 5b move. When two foreign substance engaging portions are provided as described above, the two foreign substance engaging portions 6 described in the first embodiment may be formed as a pair, but in the present embodiment, as shown in FIG. The foreign matter engaging portion 6 and the foreign matter engaging portion 30 formed of a projection are combined.

In this case, the foreign substance 3 can be engaged and detected even when the foreign substance detecting member 5 moves in any direction. For example, even if the thread-like foreign material 3 cannot be completely detected by the foreign material engaging portion 6 (see FIG. 11), if the foreign material detecting member 5 is moved in the reverse direction, the foreign material 3 is hooked by the foreign material engaging portion 30. It is possible to detect. Further, the foreign matter 3 is in a sheet shape as shown in FIG. 11, and is not caught by the foreign matter engaging portion 6 when the foreign matter detection member 5 is changed from the standby state shown in FIG. 15 to the upright state shown in FIG. Even if the sheet is wide, if the foreign object detecting member 5 is moved in the opposite direction, the edge of the sheet-like foreign object 3 can be hooked and detected by the foreign object engaging portion 30. Therefore, according to the carriage moving mechanism of the present embodiment, the detection omission of the foreign matter 3 is small.

In the present embodiment, the foreign matter detecting member 5
home position sensors 20a, 20a,
20b is provided. Further, in the present embodiment, the moving member 13 is controlled by the home position sensors 20a and 20b.
a, 13b are not directly detected, and the mediation members 31a, 31b
It is made to detect through.

As shown in FIG. 12, the intermediary members 31a and 31b are plate-shaped members provided rotatably about the fulcrums 32a and 32b, and are normally urged by urging means (not shown), Position sensors 20a, 20b
(See FIG. 12). Further, the mediating members 31a and 31b include contact portions 33a and 33b with which the foreign object detecting members 5a and 5b abut, respectively.
The movements a and 5b are interlocked. The contacted portions 33a and 33b are formed by bending a part of the plate-like intermediary members 31a and 31b, for example.

The operation of the foreign matter detecting mechanism 1 will be described.

Each foreign substance detecting member 5 which has completed detection of the foreign substance 3
a and 5b move to the most separated positions shown in FIG. 12, and can be detected by the detecting means 8a and 8b. At this time, as described above, the intermediate members 31a, 31b
Is the home position sensor 20 by the action of the urging means.
a and 20b are retracted to a position where they do not block.

Subsequently, the moving members 13a and 13b and the foreign object detecting members 5a and 5b are moved in the approaching direction to return to the home position (FIG. 13). During this movement, the foreign object detection members 5a and 5b scan the card travel path 4 once again, and remove the existing foreign object 3 from the other foreign object engaging portions 30a and 30b.
b and can be detected.

When the moving members 13a and 13b and the foreign object detecting members 5a and 5b are further approached, the foreign object detecting member 5a
(5b) receives a reaction force from the contact portions 23a (23b) abutting on the moving member 13b (13a) (FIG. 14), and rotates so as to retreat from the card travel path 4. At this time, FIG.
As shown in FIG. 5, a part of the foreign object detecting member 5a (5b) comes into contact with the contacted portion 33a (33b), and the intermediate member 31a (31).
b) to rotate the home position sensor 20a (20
b) is blocked. Thereby, the foreign object detecting members 5a, 5b
Is indirectly detected by the home position sensors 20a and 20b.

Here, if the distal end side of the foreign matter detecting member 5 including the foreign matter engaging portions 6 and 30 is lost and cannot be brought into contact with the contacted portion 33 of the intermediate member 31, the foreign matter detecting member 5 Even if is moved to the end, the intermediary member 31 does not rotate from the retracted position, so that it is not possible to detect the arrival at the home position. In this case, it is possible to determine that the tip side of the foreign object detecting member 5 is missing from the above-described situation without using the detecting means 8. Therefore, even if the foreign object detection member 5 is intentionally destroyed, it is possible to confirm the loss state at the home position.

The contact portion 23 on the foreign matter detecting member 5 may be a simple protrusion. In this embodiment, as shown in FIG. 15 and the like, the contact portion 23 is formed by two symmetrical protrusions having an arc surface. 23. In this case, during the rotation of the foreign object detecting member 5, the contact portion changes from one projection to the other projection (see FIGS. 14 and 15).

[0064]

As is apparent from the above description, according to the carriage moving mechanism of the first aspect, the carriage is
While being guided by the parallel portion on the other side while moving in one direction together with one parallel portion of the loop-shaped member, the loop-shaped member moves in parallel in a predetermined direction without rotating around the axis of the parallel portion. According to this, since the carriage moving mechanism can be configured without separately providing the guide shaft, the slide member, and the like, the size can be reduced. In addition, the cost can be easily reduced.

According to the carriage moving mechanism of the present invention, two carriages are provided, and one of the carriages is fixed to one of two parallel portions forming a loop,
Since the other carriage is fixed to the other of the two parallel portions, the rotation of one drive source (motor) in one direction is
One carriage can be moved simultaneously in different directions. Therefore, a structure in which the space is reduced and the cost is reduced can be realized.

Further, according to the carriage moving mechanism of the third aspect, the carriage (moving member) can be moved in the transverse direction by driving the stepping motor, and foreign matter in the card reader can be detected by being caught in the middle of the movement. Further, by providing a plurality of carriages and making the moving distance of the carriage about half of the card travel path, the time required for foreign object detection can be shortened.

According to the carriage moving mechanism of the present invention, the carriage may be a carriage on which a card is mounted, a carriage on which a magnetic head is mounted, or a foreign substance detecting member for detecting a foreign substance inserted inside the card reader. The present invention is implemented as one of the attached moving members, and the size and cost of the card reader and the like can be reduced according to the embodiment.

According to the carriage moving mechanism of the present invention, since the foreign object engaging portions are provided in both directions of the foreign object detecting member, the foreign objects can be engaged when moving in any direction. Therefore, it is possible to perform bidirectional scanning, and it is possible to reduce detection omissions by detecting foreign substances that could not be detected by scanning in one direction during rescanning in the opposite direction. In addition, it is possible to reduce detection omission when the foreign matter has a wide sheet shape. Thereby, the scanning performance can be improved.

According to the carriage moving mechanism of the present invention, it is possible to detect whether or not the foreign object detecting member is located at the home position, and it is also possible to detect whether or not the tip of the foreign object detecting member is missing.

According to the operation method of the carriage moving mechanism of the present invention, the carriage moving mechanism can perform a predetermined operation without separately providing a guide shaft, a slide member, and the like. This is advantageous in reducing the size of the adopted mechanism. In addition, the cost can be easily reduced.

According to the operation method of the carriage moving mechanism according to the eighth aspect, it is possible to reduce detection omissions by detecting foreign substances that could not be detected by scanning in one direction during rescanning in the reverse direction. it can. In addition, it is possible to reduce detection omission when the foreign matter has a wide sheet shape.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of a foreign object detection mechanism according to an embodiment of the present invention.

FIG. 2A is a front view showing one embodiment of a foreign matter detection member,
(B) is a side view, (C) is a rear view.

FIGS. 3A and 3B are a front view and a side view, respectively, showing the vicinity of a protruding end of a foreign matter detection member and the shape of a cutting edge.

FIG. 4 is a cross-sectional view from the right side showing a structural example from a gate port (card insertion port) to a foreign substance detection mechanism.

FIG. 5 is a front view of the card reader.

FIG. 6 is a plan view of the card reader.

FIG. 7 is a bottom view of the card reader.

FIG. 8 is a left side view of the card reader.

FIG. 9 is a right side view of the card reader.

FIG. 10 is a schematic diagram simply showing the relationship between the thickness of a foreign object detection member and the width of a concave portion.

FIG. 11 is a view around a foreign matter engaging portion of a foreign matter detection member according to a second embodiment of the present invention.

FIG. 12 is a front view of a main part of a foreign object detection mechanism according to a second embodiment of the present invention.

FIG. 13 is a front view of a main part of the foreign matter detection mechanism.

FIG. 14 is a front view of a main part of the foreign matter detection mechanism.

FIG. 15 is a front view of a main part of the foreign matter detection mechanism.

FIG. 16 is a schematic view showing a conventional carriage moving mechanism.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 foreign matter detection mechanism 2 card 3 foreign matter 4 card traveling path 5 foreign matter detection member (moved object) 6 foreign matter engagement portion 7 moving mechanism 8 detecting means 9 concave portion 10 stepping motor (motor) 12 wire (loop-shaped member) 12x, 12y Parallel part 13 Carriage 14 Roller 29 Carriage moving mechanism 30 Foreign matter engaging part 31 Intermediate member

Claims (8)

[Claims] 1. A carriage moving mechanism comprising a motor as a driving source, a carriage that moves in a predetermined direction provided on a loop-shaped member driven by the motor, and an object to be moved attached to the carriage. When the loop-shaped member is wound between two rollers and rotated by the motor and forms a loop having two parallel portions, and the carriage is fixed to one of the two parallel portions forming the loop. A carriage moving mechanism, wherein the carriage is extended to the other parallel part, and the movement of the carriage is guided by the other parallel part. 2. When two carriages are provided and one carriage is fixed to one of the two parallel portions constituting the loop, the other carriage is fixed to the other of the two parallel portions. 2. The carriage moving mechanism according to claim 1, wherein: 3. The carriage according to claim 1, wherein the carriage is a moving member to which a foreign substance detecting member for detecting a foreign substance inserted into the card reader is attached, the motor is a stepping motor, and the foreign substance detecting member is moved with respect to the card traveling path. 3. The carriage moving mechanism according to claim 2, wherein the carriage moves about half of the card travel path when moving in the transverse direction. 4. The carriage according to claim 1, wherein the carriage is a carriage on which a card is placed, a carriage on which a magnetic head is mounted, or a moving member on which a foreign substance detecting member for detecting a foreign substance inserted inside the card reader is mounted. The carriage moving mechanism according to any one of claims 1 to 3, wherein the carriage moving mechanism is any one of: 5. The carriage moving mechanism according to claim 3, wherein said foreign matter detecting member has foreign matter engaging portions for engaging with said foreign matter in both directions in which said foreign matter detecting member moves. 6. A home position sensor for detecting that the foreign object detecting member is located at a home position via an intermediary member with which the front end side of the foreign object detecting member contacts. The carriage moving mechanism according to any one of the preceding claims. 7. A moving member to which a loop-shaped member is stretched between two rollers to form a loop having two parallel portions, and a foreign object detecting member for detecting a foreign object inserted into the inside of the card reader is attached. Is fixed to one of the two parallel portions constituting the loop, the one moving member is formed to extend to the other parallel portion, and the movement of the moving member is guided by the other parallel portion. A carriage moving mechanism, wherein a moving member is fixed to the other of the two parallel portions, and the pair of foreign object detecting members reciprocate so as to approach and separate from each other in a direction crossing the card travel path. How it works. 8. The operating method of a carriage moving mechanism according to claim 7, wherein said foreign matter detecting member includes foreign matter engaging portions for engaging with said foreign matter in both directions in which said foreign matter detecting member moves. .