KR200265787Y1 - Apparatus for driving multi functional machine - Google Patents

Abstract

The present invention relates to a drive device of a multifunction machine, the driving force of the drive motor is transmitted to the gear train, the first gear for transmitting power to the photosensitive drum, the photosensitive drum in the printing mode, the heat roller and the discharge roller on the axis of the first gear The power transmission gear is coupled to the idler, and the second gear transmission gear for driving the white roller is idlely mounted on the shaft of the second gear, and the third gear has a pickup roller fixed to the same shaft. And a fourth gear engaged with the second power transmission gear on the shaft of the third gear so as to be idled, the first gear and the first power transmission gear, the second gear and the second power transmission gear, and the third gear. Spring clutches are respectively provided between the fourth gear and the fourth gear.

According to the present invention configured as described above, the driving force is not transmitted to the components of the print mode by the spring clutch when the scanning mode is driven. On the contrary, the driving force is not transmitted to the components of the scanning mode when the printing mode is driven.

As a result, the load of the driving motor can be reduced to save power, and the size of the device can be reduced.

Description

Driving device of multifunction device {APPARATUS FOR DRIVING MULTI FUNCTIONAL MACHINE}

The present invention relates to a drive device for a multifunction device, and more particularly, to a drive device for a multifunction device to independently drive only a selected mode of a scanning or printing mode.

Today, office automation devices such as printers and fax machines are widely used. Each office automation device is being developed with high performance to expand its unique functions, resulting in more expensive products. On the other hand, by developing the printer and the facsimile, which was used independently, as a product has been produced to reduce the economic burden on the user, this is a multifunction device.

In more detail, the all-in-one can be described by not only a printing function for printing data input from a computer, but also a scanning function for reading the original data, a function for printing the data of the scanned original, and the scanned data through a communication line. A multifunction performing apparatus that performs a facsimile function for printing and outputting transmitted or received data, and includes a printing apparatus, a scanning apparatus, a modem, and the like for performing the above functions.

The recently developed multifunction device has a structure in which a scanning device and a printing device are partitioned up and down inside the main body forming the external appearance of the multifunction device, which will be described below with reference to FIG. 1.

The scanning apparatus 10 and the printing apparatus 20 are respectively partitioned up and down inside the main body 1 which forms the external appearance of the multifunction apparatus.

The scanning device 10 is formed on the upper side of the main body 1 and includes a document feed path 11 for guiding the conveyance of an original (here, the document means a paper having a data surface written on one surface), and the main body. Read data recorded in the document feeding plate 12 and the document to be transferred along the document feed path 11, which is installed at the document feeder in (1) and guides the documents to be stacked and smoothly enters the document feeder. It comprises a reading device 13 to be taken, and a white roller 14 for bringing the document into contact with the reading device 13.

On the other hand, the printing apparatus 20 is formed in the lower side of the main body 1, and the paper conveying path 21 for guiding the conveyance of the paper (where the paper is in a state where no data is recorded on the printing surface); A paper feed cassette 22 for stacking a plurality of sheets, a conveying roller (not shown) for conveying sheets, and a developing unit 23 for forming an image on the upper surface of the sheet; And a heat roller 24 and a compression roller 25 for fixing the image formed on the paper by the developing unit 23 with heat and compression force, and a discharge roller 26 for discharging the printed paper to the outside of the main body 1. Consists of.

In the scanning apparatus 10 and the printing apparatus 20, a pickup roller 30 is employed to feed paper into each of the apparatuses 10 and 20, and the document feeder 12 and the paper cassette 22 are employed. ) And a specification for feeding the original and the paper through the method of controlling the rotation of one pick-up roller 30, and the specification to be fed by each pickup roller which is independently driven. Then, the friction pads 31 and 32 are in contact with the pickup roller 30 at a predetermined pressure, respectively, to separate the original and the sheet into sheets by the frictional force with the pickup roller 30.

The scanning apparatus 10 and the printing apparatus 20 are driven using one drive motor as a drive source, and the driving force of the drive motor is transmitted by each gear train.

However, according to the driving apparatus of the conventional multifunction apparatus configured as described above, the scanning apparatus 10 and the printing apparatus 20 are driven by using one driving motor as the driving source, and the driving force of the driving motor is each device 10 (20). Bar is configured to be delivered at the same time, there is a problem that unnecessary drive is generated to increase the capacity of the drive motor.

In addition, since the driving force of the drive motor is transmitted through each gear train, the structure becomes complicated, and the device becomes large.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a driving device of the multifunction apparatus in which power is transmitted only to a selected mode of a scanning mode and a printing mode.

Another object of the present invention is to reduce the size of the device by simplifying the structure for transmitting the power of the driving force of the drive motor.

1 is a schematic view showing a system of a typical multifunction apparatus.

2 and 3 is a configuration diagram of an embodiment according to the present invention.

<Description of the code used in the main part of the drawing>

14: white roller 23a: photosensitive drum

24: heat roller 26: discharge roller

30: pickup roller 40: drive motor

50: gear train

In order to achieve the object as described above, the driving device of the inventive multi-function device includes a driving motor, a gear train rotated using the drive motor as a driving source, and a driving force of the driving motor transmitted through the gear train is in a scanning mode. It characterized in that it comprises a clutch means for transmitting power to be transmitted to any one side of the print mode.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of a drive device for a multifunction device according to the present invention will be described in detail.

2 and 3 is a configuration diagram of an embodiment according to the present invention, as shown in Figures 1 to 3, the drive device of the inventive multi-function device, the drive motor 40, the driving force of the drive motor 40 scanning And a gear train 50 for transmitting to the components of the mode and the print mode, and spring clutches 60, 61 and 62 for restraining rotation of the components of the scanning mode and the print mode.

The connection structure of each device will be described in more detail. A first power transmission gear 52 is installed on the same axis as the first gear 51 of the gear train 50, and the first power transmission gear 52 is printed. The mode photosensitive drum 23a, the heat roller 24, and the discharge roller 26 are geared together, and the first spring clutch 60 is disposed on the axis of the first gear 51 and the first power transmission gear 52. Installed to block the rotational force from being transmitted to the first power transmission gear 52 in the scanning mode.

In addition, a second power transmission gear 54 is installed on the same axis as the second gear 53 of the gear train 50, and the white roller 14 of the scanning mode is geared to the second power transmission gear 54. The second spring clutch 61 is installed on the shaft of the second gear 53 and the second power transmission gear 54 to stop the second power transmission gear 54 in the printing mode.

In addition, the pickup roller 30 is fixed on the shaft of the third gear 55 of the gear train 50, and the fourth gear 56 engaged with the second power transmission gear 54 is idled therebetween. The third spring clutch 62 is coupled between the third gear 55 and the fourth gear 56.

Referring to the operating state of the drive device of the multifunction apparatus according to the present invention configured as described above are as follows.

The driving apparatus of the multifunction apparatus according to the present invention is characterized in that the components of the scanning mode and the printing mode are not driven at the same time. In more detail, the driving force of the driving motor 40 is driven when the scanning mode is driven. It is transmitted to the gear 40a, and the gear train 50 is driven by this rotational force.

Gears for driving the pickup roller, the white roller 14 in the scanning mode, and the photosensitive drum 23a, the heat roller 24, and the discharge roller 26 in the print mode by the driving force transmitted to the gear train 50. It is transmitted to the (51) 53, 55, the power is not transmitted to the first power transmission gear 52 by the first spring clutch 60 during the driving of the scanning mode.

The driving force of the driving motor 40 is transmitted to the third gear 55 through the second gear 53, and the rotation direction of the second gear 53 is not restrained by the second spring clutch 61. Therefore, it is transmitted to the second power transmission gear 54 to drive the white roller gear 14a, and at the same time, the driving force of the second power transmission gear 54 is transmitted to the fourth gear 56 in the idle state through the idle gear 57. Is delivered). The rotational force of the fourth gear 56 is transmitted to the third gear 55 by the third spring clutch 62 to pick up the original while the pickup roller 30 rotates in the pickup direction of the original. That is, the driving force of the drive motor 40 is transmitted along the B path when driving in the scanning mode.

On the contrary, when the print mode is selected, the drive motor is rotated as opposed to that in the scanning mode, and the gear train is rotated by this rotational force.

Each device is driven by the rotational force of the gear train. In the printing mode, the first spring clutch 60 transmits the rotational force to the first power transmission gear 52 by the rotational direction of the first gear 51, thereby reducing the photosensitive drum. The gear 23b, the heat roller gear 24a, and the discharge roller gear 26a are driven, and the second spring clutch 61 is actuated by the rotational direction of the second gear 53 so that the second power transmission gear 54 The white roller 14 is not driven because it restricts the rotation. That is, the driving force of the drive motor 40 is transmitted along the A path when driving in the print mode.

In the pickup operation of the print mode, the third gear 55 is rotated through the second gear 53, and the pickup roller 30 is rotated by the rotational force of the second gear 53 to pick up the print paper. At this time, since the fourth gear 56 is not rotated by the third spring clutch 62, the rotational force is not transmitted to the second power transmission gear 56.

Therefore, the device for printing mode is not driven during scanning for the transmission or copying of an original, and on the contrary, the device for scanning mode is not driven during printing, and unnecessary loss of power is prevented as in the prior art.

In addition, since the scanning mode and the printing mode receive power through one gear train, the structure is simpler than before.

As described above, according to the driving apparatus of the inventive multi-function device, since only a selected mode of the scanning mode and the printing mode is driven, the load of the driving motor may be reduced to save power.

In addition, since the structure of the driving device is simplified and the size of the device is reduced, the installation space is less restricted and the customer satisfaction can be increased.

Claims (1)

A drive motor, a gear train rotated using the drive motor as a drive source, and clutch means for transmitting power so that driving force of the drive motor transmitted through the gear train is transmitted to either one of a scanning mode and a printing mode. A driving apparatus for a multifunction apparatus comprising: a first gear to which an idle force is coupled to a first power transmission gear for transmitting power to a photosensitive drum, a photosensitive drum in a printing mode, a heat roller, and a discharge roller; A second gear in which a second power transmission gear for driving the white roller is idlely installed; A third gear meshed with the second gear and having a pickup roller fixed thereto; A fourth gear that is idlely coupled to the axis of the third gear and meshes with a second power transmission gear; And first, second and third spring clutches provided between the first gear and the first power transmission gear, the second gear and the second power transmission gear, and the third and fourth gears. Drive of multifunction machine.