KR19980053447A - Scan driver of image input device for copier - Google Patents

Abstract

The present invention relates to a scan driving apparatus of an image input apparatus for a copying machine, comprising: a driving pulley integrally mounted to a drive shaft of a motor, the first and second drums integrally formed, and a pair of vertical pulleys formed in the same shape as the driving pulley; Is installed in the vertical direction to be rolled on the bottom surface of the housing, and two support drums are installed on one side of the housing corresponding to each of the pulleys, and a guide rail formed between the support drum and each pulley has a light source. The lamp member and the reflecting mirror member are mounted to slide, and one cable of a drive belt type is wound around the driving pulley and a pair of vertical pulleys, and then wound around each end of the light source lamp member and the reflecting mirror member, respectively. It is to be rolled to perform one operation to move the light source lamp member and the reflection mirror member with a single cable Therefore, both ends of the light source lamp member and the reflecting mirror member are adjusted to move in the same manner without being eccentric to one side, and the number of parts can be simplified to reduce the mounting space of the driving mechanism, thereby reducing the cost. will be.

Description

Scan driver of image input device for copier

The present invention relates to a driving apparatus of an image input apparatus for a copier, and more particularly, to a scan driving apparatus of an image input apparatus for a copier for driving so as not to be eccentric when the image input apparatus for a copier is moved. .

In general, a copier is a control having a document table 12 on which an original is placed and a plurality of buttons 14 to perform various functions according to copying, as shown in FIG. 1. The panel 16 is mounted, and one side of the document table 12 is coupled with the hinge member 20 so that the document cover member 18 for pressing the document rotates in a predetermined direction.

In addition, FIG. 2 shows AA of FIG. 1. First, at one side of the housing 22 installed inside the copier 10, a support shaft 28 having the first and second pulleys 24 and 26 coupled to both sides is provided. A pulley 30 is attached to one end of the support shaft 28, and a pulley 34 is provided at one end of the rotation shaft 32 at a portion spaced apart from the pulley 30 by a predetermined distance. A reverse drive motor 36 is provided, and a cable 38 is wound between the pulleys 30 and 34.

In addition, the inner surfaces of the housings 22 corresponding to the first and second pulleys 24 and 26 are provided with pulleys 42 each having a hinge member 40, and are separated from the pulleys 42 by a predetermined distance. The guide rails 44 are fixed to the inner portions of the guide rails 44, and the guide members 44 are inserted in the guide rails 44 so as to slide the lens members 48 having the lenses 46 at one center thereof.

In addition, the reflective mirror member 54 and the light source lamp member 56 provided by the fixing members 50 and 52 with the cable 58 are spaced apart from each other at a predetermined distance from the lens member 48. The cable 58 is wound around the first and second pulleys 24 and 26 and the pulleys 42 corresponding to the first and second pulleys 24 and 26.

In the conventional copier image input apparatus configured as described above, when the user first sits on the upper surface of the document table 12 to copy an original, and then sets the desired copy state function, and then presses the copy button 14, At the same time, the forward and reverse drive motors 36 installed on one side of the housing 22 of the copier 10 operate to rotate the pulleys 34 interlocked with the support shafts 28 and the support shafts 28 horizontally corresponding to the pulleys 34. Since the mutual cable 38 is wound between the pulleys 30), the rotational force is transmitted.

Then, the rotational force is transmitted as described above, and the support shaft 28 rotates, and at the same time, the fixing shaft 60 is engaged. The fixed first and second pulleys 24 and 26 rotate in the same direction. Will be.

In addition, when the first and second pulleys 24 and 26 are rotated, the light source lamp member 56 horizontally corresponds to the first and second pulleys 24 and 26 as shown in FIG. And the cable 58 is fixed to the fixing members 50 and 52 with the cables 58 on both sides of the mirror mirror member 54 and the pulleys 42 as the cable 58 moves. By rotating), the light source lamp member 56 and the reflecting mirror member 54 are eventually moved.

At this time, the light source lamp member 56 and the reflective mirror member 54 is moved by a predetermined distance according to the function already set by the user and the size of the document placed on the platen glass 12, the light source from the light source lamp member 56 The radiated image is passed through the reflecting mirror member 54 and the lens 46, so that the image is irradiated to the mounted photosensitive drum (not shown) inside the copier 10.

However, the driving mechanism of the conventional image input apparatus for a copier as described above has a disadvantage in that the first and second pulleys must be installed by securing a separate space for mounting the lamp unit. Moreover, each cable is connected to the first pulley. If the outer diameters of the first and second pulleys are different because they are wound on the second pulley, the desired image is copied onto the paper by reading the image of the original at an angle because the lamp unit and the mirror unit are moved inclined instead of horizontally. In addition, in the process of horizontally wound on the first and second pulleys, the cable is composed of two coils, which are wound as the gap between the cables is widened or eccentrically wound to one side, resulting in unbalance of both cables. The member and the reflection mirror member are copied in a twisted state to reduce the image It was.

In order to compensate for these shortcomings, there was a technique of fixing the first and second pulleys to the support shaft as accurately as possible by using separate jigs, but the lamp unit and the lens unit could not be prevented from moving inclined due to the different outer diameters of the pulleys. However, there was a disadvantage that a separate space for mounting the motor must be secured as it is.

Accordingly, the present invention has been made to solve the above problems, and since the movement of the light source lamp member and the reflecting mirror member with one cable guides both ends of the light source lamp member and the reflecting mirror member without being eccentric to one side. It is an object of the present invention to provide a scan driving apparatus of an image input apparatus for a copying machine which can be adjusted so as to be moved, and also to simplify the number of parts, thereby reducing the mounting space of the driving mechanism.

In order to achieve the above object, the present invention has a drive pulley integrally mounted to the drive shaft of the motor and the first and second drums integrally formed, and a pair of vertical pulleys formed in the same shape as the drive pulley has a bottom surface of the housing. It is installed in the vertical direction so as to be rolled on, and is installed so that two support drums are rolled on one side of the housing corresponding to each pulley, the guide rail formed between the support drum and each pulley has a light source lamp member and a reflection mirror The member is mounted so as to slide, and one cable of a driving belt type is wound around the driving pulley and a pair of vertical pulleys, and then rolled on each end of the light source lamp member and the reflective mirror member and rolled on each support drum. In this case, the cable is a pair of vertical pulley and drive pulley formed of the first and second drum When winding, it passes through the first drum of the first vertical pulley and passes through the second drum of the driving pulley and is then wound on the second drum of the second vertical pulley so that each one end and the second of the light source lamp member and the reflective mirror member are wound. After passing through the supporting drum again via the first drum of the second vertical pulley and passing through the first drum of the driving pulley, it is again wound on the second drum of the first vertical pulley and the other ends of the light source lamp member and the reflecting mirror member, respectively. It is characterized in that the integral configuration connected to the first drum of the first vertical pulley via one supporting drum.

In addition, a plurality of buffer rollers may be mounted on a cable between the first drum of the first vertical pulley and the second drum of the driving pulley.

1 is a perspective view showing a conventional general copier

2 is a cross-sectional view taken along the line A-A of FIG.

Figure 3 is a cross-sectional view A-A line according to the present invention

4 is a perspective view of FIG. 3 schematically showing a scan driving device according to the present invention;

5A is a cross-sectional view taken along line B-B schematically showing a state at the time of operation of the scan drive device according to the present invention, and FIG.

Explanation of symbols on the main parts of the drawings

1: Scan driving device 70: Drive motor

70a: bracket 72: drive shaft

74: driving pulley 74a, 80a, 82a: the first drum

74b, 80a, 82b: second drum 80: first vertical pulley

82: second vertical pulley 80c, 82c: drive bearing

84: first support drum 86: second support drum

90 cable 92 first cable

92a, 94a: Upper cable 92b, 94b: Lower cable

94: second cable 96: buffer roller

98: bracket

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The same components as those in the prior art are denoted by the same reference numerals, and repeated descriptions of the components are omitted.

3 and 4 show the configuration of the scan drive device 1 according to the present invention, the drive motor 70 is mounted to the bracket 70a so as to be rotatable in the center of one side of the bottom surface of the housing 22, The drive pulley 74 and the drive pulley (1), which are integrally mounted to the drive shaft 72 of the motor 70 and in which the first drums 74a, 80a, 82a and the second drums 74b, 80b, 82b are integrally formed. A pair of vertical pulleys 80 and 82 formed in the same shape as 74 is inserted into the bearings 80c and 82c so as to be rolled on the bottom surface of the housing 22 and installed in the vertical direction. 80,

Two support drums 84 and 86 are installed on one side of the housing 22 corresponding to 82, and are rolled between the support drums 84 and 86 and the pulleys 74, 80 and 82. The light source lamp member 56 and the reflective mirror member 54 are mounted on the guide rails 44 so as to slide, and one cable 90 having a drive belt type is provided with the drive pulley 74 and a pair of vertical pulleys 80. It is wound around the 82, and is fixed to each end of the light source lamp member 56 and the reflecting mirror member 54 while being rolled to each of the support drum (84, 86) to perform one operation.

In this case, the cable 90 is wound around a pair of vertical pulleys 80, 82 and the driving pulley 74 formed of the first drum (74a, 80a, 82a) and the second drum (74b, 80b, 82b) After passing through the first drum (80a) of the first vertical pulley (80) via the second drum (74b) of the drive pulley (74), the winding again to the second drum (82b) of the second vertical pulley (82) And the driving pulley 74 through the first drum 82a of the second vertical pulley 82 again through each end of the light source lamp member 56 and the reflective mirror member 54 and the second support drum 86. After passing through the first drum (74a) of the first vertical pulley 80 is wound around the second drum (80b) of the other end and the first support of the light source lamp member 56 and the reflective mirror member 54 The drum 84 has an integral configuration connected to the first drum 80a of the first vertical pulley 80.

At this time, the cable 90 is integrally divided into first and second cables 92 and 94, and the first cable 92 is the driving pulley 74 when the driving pulley 74 rotates clockwise. The second cable 94 is moved in the opposite direction to the driving pulley 74, and if the reverse rotation of the driving pulley 74 counterclockwise, the second cable 94 The two cables 94 are moved in the same direction as the drive pulley 74, and at this time, the first cable 92 is moved in the opposite direction to the drive pulley 74, and the first and When the second cables 92 and 94 are wound around the support drums 84 and 86, the second cables 92 and 94 are divided into upper and lower portions 92a and 94a and lower portions 92b and 94b in the vertical direction. And upper ends 92a and 94a of the first and second cables 92 and 94 are wound at both ends of the reflective mirror member 54.

In addition, a plurality of buffer rollers 96 are provided on the first cable 92 between the first drum 80a of the first vertical pulley 80 and the second drum 74b of the driving pulley 74. 98) to guide the direction of the first cable (92).

As illustrated in FIG. 5A, when the copier 10 is operated, the scan driving device 1 configured as described above is at the same time a forward / reverse drive motor 70 installed at one side of the housing 22 of the copier 10. ) Operates to rotate the drive pulley 74 interlocked with it in a clockwise direction, while the first cable 92 wound around the drive pulley 74 moves in the same direction as the drive pulley 74 rotates. The first and second vertical pulleys 80 and 82 are rotated in the same direction about the bearings 80c and 82c, and the second cable 94 is opposite to the rotational direction of the driving pulley 74. Will be moved to.

In this case, upper portions 92a and 94a of the first and second cables 92 and 94 are wound while being tensioned by the first drums 80a and 82a of the first and second vertical pulleys 80 and 82. The lower portions 92b and 94b are loosened while being relaxed in the second drums 80b and 82b. The light source lamp member 56 and the reflecting mirror member 54 are first and second cables 92 and 94, respectively. Since it is connected to the upper (92a, 94a) of the light source lamp member 560 and the reflecting mirror member 54 when the clockwise rotation of the drive pulley 74 is riding the guide rail 44, each vertical pulley (80, 82).

On the contrary, when the operation of the copier 10 is completed, as shown in FIG. 5B, the driving pulley 74 rotates counterclockwise to rotate in the counterclockwise direction. In this case, the first and second cables Lower portions 92b and 94b of 92 and 94 are wound while being tensioned by second drums 80b and 82b of the first and second vertical pulleys 80 and 82, and upper portions 92a and 94a. Is loosened in the first drum (80a, 82a) is released, the light source lamp member 56 and the reflective mirror member 54 is the relaxation of the upper (92a, 94a) of the first and second cables (92, 94) The guide rails 44 are moved by the support drums 84 and 86 by the guide rails 44.

In this case, the buffer roller 96 is mounted on the first cable 92 between the first vertical pulley 80 and the driving pulley 74 to guide the position of the first cable 92. When winding from one vertical pulley 80 to the driving pulley 74, the vertical height difference therebetween is greater than the other parts to prevent the rolling overlaps each drum (80b, 74a).

As described above, in the present invention, the cable is composed of one, and is wound around both ends of the light source lamp member and the reflective mirror member, and thus, the rotation of the driving pulley prevents unstable winding and eccentricity of the cable, thereby accurately correcting the image of the paper according to the copy. In addition, since the configuration of the scan driving device is simple, the cost is reduced.

Claims (4)

The first and second pulleys are fixed to both sides of the support shaft installed at one side of the copier housing through the fastening screw, and at the portions spaced apart from the first and second pulleys by a predetermined distance, the reflection mirror member having the pulleys at both sides and In the driving device of the image input device for a copier, in which a light source lamp member is provided, and two cables are extended between each of the pulleys corresponding to the first pulley, the center of the bottom surface of the housing 22 rotates. The drive motor 70 is mounted so that the first motor 74a, 80a, 82a and the second drum 74b, 80b, 82b are integrally mounted to the drive shaft 72 of the motor 70. Drive pulley 74 and a pair of vertical pulleys (80,82) formed in the same shape as the drive pulley 74 is installed in the vertical direction to be rolled on the bottom surface of the housing 22, each of the pulleys Two supports on one side of the housing 22 corresponding to (74, 80, 82) The rum (84, 86) is installed to roll, the guide rail 44 formed between the support drum (84, 86) and each pulley (74, 80, 82), the light source lamp member 56 and the reflection mirror The member 54 is mounted to slide, and one cable 90 of a driving belt type is wound around the driving pulley 74 and the pair of vertical pulleys 80 and 82, and the light source lamp member 56 and the reflection mirror are again. A winding driving device of an image input apparatus for a copier, characterized in that the winding is fixed to each end of the member (54) and rolled on the support drums (84,86) to perform one operation. The method of claim 1, wherein the cable (90) comprises a first drum (74a, 80a, 82a) and a second drum (74b, 80b, When wound around the pair of vertical pulleys 80 and 82 and the driving pulley 74 formed of 82b, the second drum of the driving pulley 74 is passed through the first drum 80a of the first vertical pulley 80. After passing through 74b), it is wound around the second drum 82b of the second vertical pulley 82 to each one end of the light source lamp member 56 and the reflective mirror member 54 and the second support drum 86. Extends to the first cable 92 of the first cable 92 and through the first drum 82a of the second vertical pulley 82 via the first drum 74a of the driving pulley 74. The second cable is wound around the second drum 80b of the first vertical pulley 80 to the other ends of the light source lamp member 56 and the reflective mirror member 54 and the first support drum 84. 94, the first cable 92 moves in the same direction as the drive pulley 74 when the drive pulley 74 rotates clockwise, and the second cable 94 is To move in the opposite direction to the driving pulley (74) Scan drive device of a copying machine image input apparatus, characterized in that. The upper and lower portions 92a and 94a and 92b and 94b of the first and second cables 92 and 94, respectively, when the first and second cables 92 and 94 are wound around the support drums 84 and 86, respectively. The driving pulley 74 is formed by winding upper portions 92a and 94a of the first and second cables 92 and 94 at both ends of the light source lamp member 56 and the reflective mirror member 54. The upper portions 92a and 94a of the first and second cables 92 and 94 are tensioned to the first drums 80a and 82a of the first and second vertical pulleys 80 and 82 when the clockwise rotation of the It is wound while receiving, the lower portion (92b, 94b) of the scan drive device of the image input device for a copier, characterized in that the second drum (80b, 82b) to be released while being relaxed. 2. The plurality of buffer rollers (96) according to claim 1, wherein the first cable (92) between the first drum (80a) of the first vertical pulley (80) and the second drum (74b) of the driving pulley (74) is provided. ) Is mounted on a bracket (98) to guide the position of the first cable (92).