JPH0225795Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a facsimile machine that allows an automatic sheet feeding function to be easily added.

Recently, as transmission speeds have increased, some facsimile machines have been equipped with automatic sheet feeding devices to enable automatic electronic transmission of sheets such as original documents one after another. However, depending on the use of the facsimile device, there are cases where it is not necessary to continuously transmit documents, but only to transmit single sheets. In such cases, purchasing a facsimile machine equipped with the above-mentioned automatic sheet feeding device would be a big burden for the user, as this type of device is more expensive than one without an automatic sheet feeding device. . Therefore, it is preferable for such users to purchase a facsimile machine that does not have an automatic sheet feeding device.

However, with this type of facsimile machine, if it becomes necessary to continuously transmit documents due to changes in usage after purchase, etc., it is not possible to add an automatic sheet feeding function, and even if it could be added, it is not possible to add an automatic sheet feeding function. Since the automatic sheet feeding device is attached externally, the device becomes large and expensive, and the user's needs cannot be met.

This invention was made with attention to the above circumstances,
The purpose of this is to make it possible to add an automatic sheet feeding function by making use of the existing mechanism without changing the configuration of the current device, to easily change the function, and to create a small and inexpensive facsimile machine. Our goal is to provide the following.

An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1a and 1b show only the portions of the facsimile apparatus of the same embodiment that are related to the present invention, with a being a front sectional view and b being a side sectional view. In the figure, 1a and 1b are frames, and a transport mechanism main body 2 is attached between these frames 1a and 1b. This transport mechanism main body 2
The apparatus has a drive shaft 21 and an auxiliary shaft 22 that form a pair with each other, and a conveyor belt 25 is installed between pulleys 23 and 24 fitted to each of these shafts 21 and 22. The conveyor belt 25 is rotated in the direction of arrow A by transmitting the driving force of a drive source (motor) not shown to the drive shaft 21. Furthermore, of the frames 1a and 1b, the frame 1a is provided with a bearing hole 11 as one of the second engaging parts for pivotally supporting a drive shaft of an automatic sheet supply addition part to be described later. There is. On the other hand, a pin 12, which also serves as a second engaging portion, is provided on the outer surface of the frame 1b. This pin 12 is used for positioning when attaching an automatic sheet supply addition section to be described later. The installation positions of these bearing holes 11 and positioning pins 12 are determined so that the reversing roller of the automatic sheet supply adding section comes into contact with the conveyance belt 25 of the conveyance mechanism main body 2. On the other hand, a sheet pressing plate 3 is arranged on the upper surface of the conveying belt 25 of the conveying mechanism main body 2. This pressing plate 3 presses the original 5 introduced while being guided by the guide plates 4a and 4b against the conveying belt 25, thereby stably conveying it to a reading section (not shown).

By the way, the automatic sheet supply adding section is, for example, the second
It is configured as shown in the figure. That is, the driving force of the driving source (motor) 61 is transferred to the torque limiter section 62.
The signal is transmitted to the drive shaft 63 via the drive shaft 63, thereby rotating the roller 64 fitted to the drive shaft 63. Here, the torque limiter section 62 is
The gear 65 is connected to the drive source 61 by pressing the drive plate 68 with a constant pressure using a compression spring 67, and is connected to the drive shaft 63 via the gears 65 and 66. On the other hand, one end of the drive shaft 63 is fixed to the side plate 69 via a bearing 63b. This side plate 69 mechanically integrates the drive shaft 63 and the drive source 61.
A through hole 70 serving as one of the first engaging portions is bored on the side opposite to the drive source 61 with respect to the three-axis support position. This through hole 70 is used for positioning when the automatic sheet supply addition section is attached to the transport mechanism main body 2 by fitting with the pin 12 of the transport mechanism main body 2. Note that a bearing 63a serving as one of the first engaging portions is also attached to the other end of the drive shaft 63.

Therefore, in order to attach this automatic sheet supply addition section to the transport mechanism main body 2, first, with the automatic sheet supply addition section facing the transport mechanism main body 2, the bearing 63a of the drive shaft 63 (the first engagement section ) is fitted into the bearing hole 11 (second engagement part) of the frame 1a, and the through hole 70 (first engagement part) provided in the side plate 69 is fitted into the pin protruding from the frame 1b. 12 (second engaging portion). Then, in this state, screws 8 as fixing members are screwed into screw holes (not shown) previously provided in the frame 1b through screw holes provided in the side plate 69, and automatic sheet feeding is added. Finish installing the parts. Third
Figures a and b show the state after the installation is completed.

In addition, when removing the automatic sheet supply adding section, it is sufficient to perform the procedure in the reverse order of the above-mentioned installation procedure.

The operation of the apparatus configured as above will be explained.
First, when the automatic sheet feeding addition unit is not installed (FIGS. 1a and 1b), when the original 5 is inserted, the original 5 is pressed against the conveyor belt 25 by the pressing plate 3, and as the conveyor belt 25 rotates. It is transported to the reading section. Therefore, in such a state, it is possible to electronically transmit the original 5 by manually inserting the original 5 sheet by sheet.

Next, when the automatic sheet feeding addition section is attached, the operation is as follows. That is, the leading ends of a plurality of documents 5, 5, . rotate in the opposite direction (direction of arrow B). Then, the conveyor belt 2
5. The coefficient of friction between the document and the roller 64 is as follows: between the conveyor belt and the document > between the roller and the document > between the documents;
The original 5 in contact with the original 5 is pressed against the conveyor belt 25 by the roller 64, and is sent to the reading section as the conveyor belt 25 rotates. However, the other documents 5, 5, . . . that are not in contact with the conveyor belt 25 are returned by the reverse rotation of the roller 64 and are not conveyed to the reading section. Then, when the rear end of the first original 5 passes through the contact area between the transport belt 25 and the roller 64, the second original 5 comes into contact with the transport belt 25, and is similar to the first original 5. is sent to the reading section. Thereafter, similarly, the documents 5, 5, . . . are sequentially sent one by one to the reading section in the order in which they are stacked. In this way, multiple documents are automatically fed.

Note that if the originals 5, 5, etc. are not set, the load when the roller 64 comes into direct contact with the conveyor belt 25 exceeds the allowable amount of the torque limiter section 62, so the roller 64 moves in the direction of the arrow along the conveyor belt 25. Rotate in direction B′.

As described above, according to this embodiment, since the shaft support hole 11 of the automatic sheet supply addition section and the through hole 70 for positioning are provided in the conveyance mechanism main body 2, the automatic sheet supply addition section can be simply attached. , an automatic sheet feeding function can be added while making full use of the transport mechanism main body 2 for feeding single sheets and without changing any other configuration. Therefore, compared to conventional automatic sheet feeding devices that are externally attached or machines that are modified, it is possible to provide a device that is smaller and cheaper. Furthermore, when changing the configuration from one for feeding single sheets to one capable of automatic sheet feeding, there is an advantage that the change can be made with an extremely simple operation of simply screwing in the screw 8 after performing the prescribed mating operation. .

Note that the present invention is not limited to the above embodiments. For example, as shown in FIG.
The same implementation is possible even when the conveyance roller 30 is provided instead of the roller 5. Further, a bearing for pivotally supporting the drive shaft of the automatic sheet supply adding section may be provided in advance on the conveyance mechanism main body side. In addition, the configuration of the automatic sheet feeding addition section, its attachment means, etc. can be modified in various ways without departing from the gist of the present invention.

As described in detail above, the present invention provides a sheet conveying mechanism main body that transmits the driving force of a first drive source to a conveying body through a drive shaft to rotate this conveying body in the sheet conveying direction, and a sheet conveying mechanism of the conveying body. In addition to a monofilament supply mechanism having a pressing member that is disposed in a state of being pressed against a surface and that presses the sheet against the sheet transportation surface of the rotating transport body to convey the sheet to the reading section, an automatic sheet supply system is also provided in conjunction with this monofilament supply mechanism. an automatic sheet feeding additional section comprising a mechanism and having a mechanism for transmitting the rotational force of a second drive source to a reversing roller via a torque limiter to rotate the reversing roller in a direction opposite to the rotational direction of the conveying body; A first engagement portion provided on a shaft support member that pivotally supports the reversing roller shaft of the automatic sheet feeding addition unit, and a second engagement portion provided on a shaft support member that pivotally supports the drive shaft of the single leaf supply mechanism. and a fixing member, and when changing from a monolayer feeding mechanism to an automatic sheet feeding mechanism, the mounting position of the automatic sheet feeding adding section with respect to the monolayer feeding mechanism is set to the first position of the positioning section. and positioning the second engaging portion so that the drive shaft and the reversing roller shaft are parallel to each other and the circumferential surface of the reversing roller is in contact with the sheet conveying surface of the conveying body, In this state, the fixing member is configured to structurally integrate the shaft support member of the automatic sheet supply addition section and the shaft support member of the single leaf supply mechanism in a detachable manner. In addition, in this state, the reversing roller of the automatic sheet feeding addition unit of the present invention rotates in the reverse direction when a sheet is interposed between it and the conveying body, and rotates following the conveying body when no sheet is interposed between it and the conveying body. It is configured as follows. Therefore, according to the present invention, an automatic sheet feeding mechanism can be added while making use of the existing mechanism without changing the configuration of the current device.
Moreover, the functions can be easily changed, and a small and inexpensive facsimile device can be provided.

[Brief explanation of the drawing]

Figures 1a, b to 3a, b show an embodiment of the present invention, and Figure 1a is a front cross-sectional view showing the main parts of the facsimile machine without the automatic sheet feeding section installed. Fig. 1b is a side sectional view of Fig. 1b, Fig. 2 is a front sectional view showing the automatic sheet feeding addition section, and Fig. 3a is a main part of the facsimile machine after the automatic sheet feeding addition section is installed. 3b is a side sectional view of FIG. 3a,
FIG. 4 is a side sectional view showing the main parts of a facsimile apparatus according to another embodiment of the present invention. 1a, 1b...Frame, 2...Transportation mechanism main body, 3...Press plate, 11...Bearing hole, 12...
Pin, 21... Drive shaft, 22... Auxiliary shaft, 23,
24...Pulley, 25...Transport belt, 61...
Drive source, 62...torque limiter section, 63...drive shaft, 64...roller, 63a, 63b...bearing, 69...side plate, 70...through hole.

Claims (1)

[Scope of utility model registration request] A sheet conveying mechanism body that transmits the driving force of a first drive source to a conveying body through a drive shaft to rotate this conveying body in the sheet conveying direction; and a sheet conveying mechanism body that is disposed in a state in which it is pressed against the sheet conveying surface of the conveying body. a single sheet feeding mechanism having a pressing member that presses the sheet against the sheet conveying surface of the rotating conveyance body and transporting the sheet to the reading unit; and a single sheet feeding mechanism that constitutes an automatic sheet feeding mechanism together with this single sheet feeding mechanism, and a rotational force of a second drive source. an automatic sheet feeding section having a mechanism for transmitting the torque to a reversing roller through a torque limiter and rotating the reversing roller in a direction opposite to the rotational direction of the conveying body; a plurality of first engaging portions provided on a shaft supporting member that pivotally supports the drive shaft of the single leaf feeding mechanism; When the first and second engaging portions engage with each other, the automatic sheet feeding addition portion and the single sheet feeding mechanism are arranged so that their drive shafts and reversing rollers are parallel to each other, and the circumferential surface of the reversing roller is aligned with the sheet conveyance of the conveying body. A positioning part that positions the part in contact with a surface, and a shaft support member of the automatic sheet supply addition part and a shaft support member of the monofilament supply mechanism in a state where they are positioned by this positioning part are removably integrated structurally. and a fixing member, the reversing roller of the automatic sheet feeding addition unit rotates in the reverse direction when a sheet is interposed between the automatic sheet feeding unit and the conveying body, and rotates following the conveying body when no sheet is interposed. A facsimile device featuring: