JPH01247331A - Transmission gear for driving attachment of copying machine or the like - Google Patents

Abstract

PURPOSE:To enable a connecting gear to be easily stored in a main unit, when an additional attachment is not equipped, and to be easily set in a gear meshing condition, when the attachment is equipped, by providing the connecting gear through a link between an intermediate gear and a transmitting gear of the attachment. CONSTITUTION:An additional attachment 2C provides a transmitting gear 21 driving a paper feed roller or the like and being supported to a fixed shaft 22, and by connecting the gear 21 to a driving mechanism in a main unit device 1, paper feed action is performed from the attachment 20. While a stopper arm 12 provides its lever 15 through a stopper part 17 for a stopper hole 3 of a main unit frame 2, and a stopper 16 is provided in the lever 15 protruded to the inner side from the stopper part 17 so as to enable the stopper arm 12 of a link 10 to be stopped. The attachment 20, when it is not mounted to the main unit device 1, can be maintained in a stopped condition by swiveling the link 10 in the counterclockwise direction for a fixed shaft 7a stopping the stopper arm 12 of the link 10 to the stopper 16 of the lever 15.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a method for transmitting driving force from the main body to a copying machine or the like when an additional paper feeding device or the like is installed. The present invention relates to a device that facilitates the fixing of gear transmission means, in particular to a device that facilitates the fixing of gear transmission means without additional devices being provided.

(Prior Art) In a device such as a copying machine, a plurality of paper feed cassettes or paper trays are provided inside the main body of the copying machine, and paper stored in the paper feed cassette etc. is arranged according to the size of the document. The paper is fed by automatically selecting paper of an appropriate size, and conveyed toward the image transfer section.
It is common practice to create a copy.

On the other hand, if the copying machine is a very high-performance device and the paper stored in the paper cassette cannot handle the speed of copying, or if the copying machine needs to copy a large number of copies. In addition to the paper feeding device provided in the main body of the copying machine, an additional paper feeding device is combined so that thousands of sheets of paper stored in the additional paper feeding device can be supplied sequentially for copying. There is.

As mentioned above, when an additional device is provided to the main device, the additional device is not equipped with a driving means such as a motor, so in order to drive the paper feed roller of the additional device, the main device must be It is necessary to connect a transmission means such as a gear to a drive mechanism provided in the apparatus to drive the paper feed roller.

Therefore, in conventional additional devices, connecting gears are rearranged between the main body drive gear provided in the main device and the transmission gear of the additional device, and driving force is transmitted through these multiple gear devices. A method is used.

For example, in a conventional device as shown in FIG. A method is used in which the device is attached to the device and the driving force is transmitted between the two devices.

When using the drive transmission method as described above, after attaching the additional device 20 to the main device 1, by attaching the connecting gear 8 to the gear portions of both devices,
It becomes possible to transmit driving force between those gears.

In addition, in the conventional example shown in FIG. 4, instead of separately providing a connecting gear for the above-mentioned purpose, the connecting gear 8 is supported on the frame of the main unit via a link 10, and an additional If the device is not equipped, the connecting gear 8
is provided so as to be covered by a gear cover 25.

When attaching the additional device 20 to the main device 1, the gear cover 25 housing the connecting gear 8 inside the main body 2 is removed by removing the fixing screws 26.26a. is set in a free state, and the link 10 supporting the connecting gear 8 is engaged by the spring 11 with the gears assigned before and after it, so that the paper feeding device etc. provided in the additional device @20 can be driven. It is being done.

(Problems to be solved by the invention) However, in the conventional device as described above,
For example, in the case of the device shown in Figure 3, when installing additional devices, it is necessary to install the connecting gear using a tool, and this work is relatively flat. In addition, it is necessary to accurately set the meshing of the gears.

Further, in the conventional example shown in FIG. 4, the gear cover is removed and the connecting gear is swung, so there is a problem that operations such as removing the gear cover are time-consuming. .

In the case of the configuration as described above, each gear must be accurately positioned when the gear members are engaged.
If the paper feeding operation is not performed normally and the meshing is not set well, there are problems such as damage to the gears and generation of noise.

(Object of the Invention) The present invention solves the drawbacks of the conventionally used devices as described above, and makes it possible to easily store the connecting gear in the main body frame when no additional device is installed. It is an object of the present invention to provide a device that allows the gears to be easily set in mesh when an additional device is installed.

(Means and effects for solving the problem) The drive transmission device for an accessory device such as a copying machine of the present invention transmits drive from a main body drive gear provided in the main device to a transmission gear of an additional device via an intermediate gear A7. In a device configured to transmit data, a connecting gear is provided via a link between the intermediate gear and a transmission gear of the additional device, and the connecting gear is engaged with the transmission gear to drive the main body. Provision is made such that the driving force of the gear can be transmitted, a means is provided for fixing a link supporting the connecting gear to the main body frame, and the connecting gear is housed inside the main body frame by the fixing means when the additional device is not used. This device is configured so that it can be set to a state in which

The drive transmission device for an accessory device such as a copying machine according to the present invention is as follows:
Since it is constructed as described above, when no additional device is used, the connecting gear can be easily stored within the main body frame, and the stored state can be ensured.

Further, when an additional device is installed, it can be easily set to the transmission position from inside the main body frame, and the meshing relationship of each gear can be maintained well.

(Embodiment) The configuration of a drive transmission device for an accessory device such as a copying machine according to the present invention will be described according to an illustrated example.

In the embodiment shown in FIGS. 1 and 1a, an intermediate gear 7 is disposed with respect to the main body drive gear 5 of the main body device 1 via a fixed shaft 7a, and a connecting gear 8 is engaged with the intermediate gear 7. It is set up to match.

The connecting gear 8 of the present invention is supported via a support@8a at one end of a link 10 that is swingably supported with respect to a fixed shaft 7a, and the link 10 is supported by a spring 11. It is provided so as to be biased toward the transmission gear 21 of the additional device 20.

Further, a locking arm 12 is provided at the other end of the link 10, and a lever 15 is provided in the body frame 2 in a swingable state corresponding to the locking arm 12. By locking the locking arm 12 of the link 10 with the stopper 16 provided at the stopper 15, the connecting gear 8 is prevented from protruding from the lower part of the main body frame 2.

In the illustrated embodiment, the additional device 20 is provided with a transmission gear 21 supported by a fixed shaft 22 in order to drive a paper feed roller etc. provided in the device, and the transmission gear 21 is connected to the main body. By connecting it to the drive mechanism of the device 1, it is possible to feed paper from the additional bag @20.

Further, a lever 15 provided on the locking arm 1 of the present invention
is the locking part 1 for the locking hole 3 of the main body frame 2.
A stopper 16 is provided on a lever 15 that is provided through a lever 7 and protrudes inward from the locking portion 17, and the locking arm 12 of the link 10 can be locked by the stopper 16. I will be able to do it.

When the additional device 20 is not attached to the main body bag @1, the locking arm 12 of the link 10 is moved to the stopper 16 of the lever 15 by swinging the link 10 counterclockwise with respect to the fixed shaft 7a. It is possible to lock it in place and maintain it in that locked state.

The relationship between the links, levers, and gears of each mechanism shown in FIG. 1 is as shown in FIG. It is stored inside and is not exposed to the outside.

The example shown in FIGS. 2 and 2a shows an example in which the additional device 20 is attached to the main device 1 of the present invention, and after the additional bag M 20 is attached to the main device 1. Then, by swinging the upper portion of the lever 15 in the direction of the arrow as shown in FIG. 1, the engagement of the stopper 16 with the locking arm 12 is released.

Then, by releasing the locked state of the link 10, the link 10 is swung clockwise, and the connecting gear 8 supported at the end of the link is connected to the transmission gear 21 by the force of the spring 11. As a result, the rotation of the main body drive gear 5 and the intermediate gear 7 is transmitted to the transmission gear 21.

Furthermore, in the gear meshing state of the present invention described above, the connecting gear 8 is pressed against the transmission gear 21 by the force of the spring 11, so that the meshing state is good in the initial setting state. Even if it is not, the gears will rotate slightly and their meshing will be normal.

As described above, in the device of the present invention, the connecting gear of the main device can be easily housed inside the main body frame, and the connecting gear can be easily connected to an additional device.

Note that the drive connection device of the present invention can easily connect the gears provided in each device when an additional paper feed device such as a paper tray is provided separately to the copying machine. However, the mechanism of the present invention can also be applied when a copying machine body is equipped with a sorter, a paper folding machine, and a binding device.

Furthermore, the gears, links, levers, and other R structures shown in the embodiments of the present invention described above are not necessarily limited to those shown in the drawings. The locking relationship between the link and the lever is as follows.
It can be formed arbitrarily depending on the structure of the main device.

(Effect of the invention) The drive transmission device for an accessory device such as a copying machine according to the present invention is as follows:
Since it has the above-mentioned configuration, if no additional device is installed, the connecting gear can be held in a state where it is not exposed from the main body, and the holding state of the connecting gear can be maintained reliably. You can do it.

Furthermore, in the device of the present invention, when setting the meshing state of the gears, the locking state of the coupling gear can be easily released, and the operation can be easily performed.

[Brief explanation of the drawing]

Figure 1 shows the configuration of the device of the present invention, showing a side view with the connecting gear housed in the main body, Figure 1a is its front view, and Figure 2 shows the connecting gear in the meshed state. FIG. 2A is a side view of the set state, FIG. 2A is a front view thereof, FIG. 3 is a side view of a conventional example, and FIG. 4 is a side view when the connecting gear A7 is held by a gear cover. Reference numerals in the figure 1...Main device, 2...Main frame, 5...Main body drive gear, 7...Intermediate gear, 8... ...Connection gear, 70...Link, 11...Spring, 12...Locking arm, 15.Old...Lever, 16... Stopper, 17... locking part, 20... additional device, 21... transmission gear, 25... gear cover. Figure 1 Figure 1a Figure 2 Figure 2cL Figure

Claims (1)

[Scope of Claims] A device configured to transmit drive from a main body drive gear provided in the main device to a transmission gear of an additional device via an intermediate gear, wherein the intermediate gear and the transmission gear of the additional device A connecting gear is provided between the frames via a link, and by meshing the connecting gear with a transmission gear, the driving force of the main body driving gear can be transmitted, and the link supporting the connecting gear is connected to the main body frame. A drive for an accessory device such as a copying machine, characterized in that a means for fixing to the main body frame is provided, and the fixing means allows the connecting gear to be set in a state housed inside the main body frame when the additional device is not in use. conduction device.