JPH04138052U - Fax machine drive mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] We propose a drive mechanism for a facsimile machine that can perform the necessary sending, receiving, and copying operations using a single motor. [Structure] Includes a transmission gear 5 driven by a motor 1, a feed gear 9 that transmits power to the feed roller 2, and a platen gear 10 that transmits power to the platen roller 3. It is provided so as to be swingably displaceable (arrow A) between a neutral position where it engages with both the feed roller 9 and a feed roller drive position where it engages only with the feed gear 9 and a platen roller drive position where it engages only with the platen gear 10.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention uses a single motor to perform document feeding and recording paper ejection. The present invention relates to a drive mechanism for a facsimile machine.

0002

[Conventional technology]

A facsimile machine has a drive for performing three operations: sending, receiving, and copying. A mechanism is provided. In other words, when sending, the feed slot installed in the document feeding path is The controller is rotated to feed the original to be sent, while the recording paper is ejected during reception. The recording paper is ejected by rotating a platen roller provided in the path, and further, During copying, the original is fed by the rotation of the feed roller and the platen roller is rotated. The recording paper ejecting operation by rotational drive is performed at the same time. Therefore, conventionally facsimile machines include a motor (transmission motor) to rotate the feed roller. motor) and a motor (receiving motor) for rotating the platen roller. It was necessary to install it on the .

0003

[Problem that the idea aims to solve]

However, current facsimile machines equipped with two drive motors However, it has been pointed out that the disadvantage is that the number of parts is large and the cost is high. The motor occupies a large space in the pace, reducing the overall size of the device. It is also a factor that prevents weight reduction.

0004 In order to solve these current problems, the present invention utilizes one drive motor. Driving a facsimile machine that can perform three operations: sending, receiving, and copying. We are proposing a mechanism.

[0005]

[Means to solve the problem]

The present invention has the following features as a drive mechanism for a facsimile machine that can achieve the above objectives. We are using such methods.

[0006] In other words, there is a transmission gear driven by the motor and a flap that transmits power to the feed roller. The transmission gear includes a feed gear and a platen gear that transmits power to the platen roller. , sandwich the neutral position where the feed gear and platen gear engage, and then move the feed gear Feed roller drive position that meshes with the chisel and platen gear that meshes only with the platen gear It is arranged so that it can be displaced between the roller drive position and the roller drive position.

[0007]

[Effect]

In this drive mechanism, the transmission gear is a neutral gear that meshes with the feed gear and the platen gear. With the position set, the feed roller and printer are connected from the motor gear via the transmission gear. Power can be transmitted to both Latin rollers simultaneously. Also, fix the transmission gear. When shifted to the feed roller drive position where it meshes only with the motor gear, Power can be transmitted only to the feed roller through the transmission gear, and vice versa. If you shift the gear to the platen roller drive position where it only meshes with the platen gear, Power can be transmitted from the motor gear to the platen roller only via the transmission gear. Ru.

[0008]

【Example】

Hereinafter, a more specific explanation will be given with reference to Examples.

[0009] 1 to 3 show an embodiment of the present invention. This drive mechanism uses a single motor A motor drives the feed roller 2 of the transmission system and the platen roller 3 of the reception system from the printer 1. The main elements for transmitting force are a transmission gear 5 driven by the motor 1 and a transmission gear 5 that is driven by the motor 1. Feed gear 9 transmits power to feed roller 2 and power transmits to platen roller 3 The platen gear 10 is configured to include a platen gear 10.

0010 The motor 1 is attached to a motor bracket 7, and is attached to the shaft inside the facsimile machine. It is fixed to the seat, etc. The motor 1 has a motor gear (pinion) on its output shaft 1a. (on) 4 is fixed, and a transmission gear 5 is connected to this motor gear 4 via an idler gear 6. When engaged, the transmission gear 5 is driven by a motor.

[0011] The transmission gear 5 and the idler gear 6 swing their base ends toward the motor output shaft 1a. The transmissions attached to the ends of the arms are each pivotally supported by the freely attached arms 8. While the moving gear 5 remains in mesh with the motor gear 4 via the idler gear 6, It is also possible to perform rocking displacement (arrow A) around the motor output shaft 1a.

0012 Directly above the transmission gear 5 driven by the motor 1 is a transmission gear with an arm 8 standing upright. The above-mentioned feed gear 9 and platen gear 1 are placed in symmetrical positions sandwiching the neutral position of 5. 0 is arranged.

[0013] The feed gear 9 includes a pulley 9a provided on its rotating shaft and the feed roller. The timing belt 11 is wound around the pulley 2a provided on the rotating shaft of the Transmits the motor driving force that is input while meshing with the moving gear 5 to the feed roller 2 The function is to cause the feed roller 2 to carry out the document feed operation necessary for sending and copying. fulfill the eyes. Further, the platen gear 10 has a pulley 10a provided on its rotating shaft. A timing belt 1 is connected to a pulley 3a provided on the rotating shaft of the platen roller 3. 2, and the motor driving force that is input when it is engaged with the transmission gear 5 is applied to the plastic. Recording paper necessary for transmission to the ten roller 3 and reception and copying to the platen roller 3 It serves to perform the ejection operation.

[0014] The feed gear 9 and the platen gear 10 are the feed roller 2 and the platen gear, respectively. The transmission roller 3 is rotatably supported by a bracket (not shown) extending from the transmission roller 3. While applying a constant downward pressing force to the moving gear 5, the feed roller 2 is Swing displacements (arrows B and C) around the rotating shaft and the rotating shaft of the platen roller 3, respectively. ) is installed so that it can be installed.

[0015] In addition, in the figure, 13 and 13 are under the swing of the feed gear 9 and the platen gear 10. The gear stopper that regulates the end position is shown.

[0016] In this drive mechanism, a transmission gear 5 is engaged with a feed gear 9 and a platen gear 10. Holding the neutral position (Fig. 1) where the transmission gear 5 and the feed gear 9 mesh together, feed roller drive position (Fig. 2) and platen roller that meshes only with platen gear 10. 3. Actuating means are provided for displacing the roller into the drive position (FIG. 3). transmission gear Specifically, the means for displacing the gear 5 is configured to move the arm 8 between both sides of the transmission gear 5. It consists of a pair of solenoids 14, 14 arranged at symmetrical positions, and each solenoid 14 A traction rod 15 extending from the arm 8 is pivotally connected to the middle part of the arm 8 from the opposite direction. It is composed of

[0017] With the drive mechanism configured as described above, the transmission system is connected to the transmission system from a single mounted motor 1. Power is applied to feed roller 2 and receiving system platen roller 3 selectively or both at the same time. It becomes something that can be communicated.

[0018] That is, at the time of transmission, as shown in FIG. 2, the solenoid on the feed roller 2 side 14 is turned ON to feed the transmission gear 5 together with the arm 8 to the feed gear 9 side. When it is moved to the roller drive position, the feed gear 9 is pushed up from below. Transmission gear 5 moves to a position directly below it. At this time, transmission gear 5 and feed gear 9 The meshing state between the motor 1 and the feed roller 2 is maintained, and the power is transmitted from the motor 1 to the feed roller 2. On the other hand, the transmission gear 5 and the platen gear 10 are disengaged, and the motor 1 to the platen roller 3 is cut off. Therefore, in this state, the flap Only the feed roller 2 is rotationally driven, and only the document feeding operation necessary for the transmission system is executed. It will be.

[0019] Also, at the time of reception, as shown in FIG. 3, the solenoid 14 on the platen roller 3 side Turn on the operation and move the transmission gear 5 together with the arm 8 to the platen rotor on the platen gear 10 side. When the roller is moved to the drive position, the transmission gear 5 is now located directly below the platen gear 10. Move to. At this time, the meshing state between the transmission gear 5 and the platen gear 10 is maintained. While the power is transmitted from the motor 1 to the platen roller 3, the transmission gear 5 and feed gear 9 are disconnected, and the motor 1 is transferred to the feed roller 2. power transmission is cut off. Therefore, in this state, only the platen roller 3 rotates. Then, only the recording paper ejecting operation necessary in the receiving system is executed.

[0020] Furthermore, when copying, both solenoids 14 and 14 are turned off, The transmission gear 5 may be returned to the neutral position shown in FIG. At this time, the feed Gear 9 and platen gear 10 are on both sides of transmission gear 5 held at an intermediate position between the two. The feed roller 2 and platen roller 3 are simultaneously engaged from the motor 1. Power is transmitted to both sides, and the document feeding operation required in the transmitting system and the recording paper ejection required in the receiving system The operations will be executed simultaneously.

[0021] In this way, the drive mechanism based on the present invention has a transmission driven by a single motor 1. A fift that oscillates the moving gear 5 and transmits power from the transmission gear 5 to the feed roller 2. Alternative or Since both can be engaged at the same time, the facsimile machine Only one motor is required to carry out the three basic operations, and the transmission gear 5 can be changed easily. Even if the operation means (solenoids) 14, 14 are added, the overall device It becomes possible to use a small number of low-cost products. Also, large parts inside the device Since only one motor is required, which occupies mounting space, the entire facsimile machine can be The body can also be made smaller and lighter.

[0022] In addition, in the embodiment, a motor gear is used as an operation method for displacing the transmission gear 5. An arm 8 with an idler gear 6 and a transmission gear 5 mounted on the motor output shaft 1a However, the transmission gear 5 is linearly displaced and the feed gear It is also possible to switch the engagement between the gear 9 and the platen gear 10. be. Further, a solenoid 14 is used as a displacement operation means for displacing the transmission gear 5. Not limited to things.

[0023]

[Effect of the idea]

As described above, the transmission gear driven by the motor transmits power to the feed roller. The feed gear that transmits power to the platen roller and the platen gear that transmits power to the platen roller are displaced. By adopting the drive mechanism of the present invention, which switches the mutual meshing state by The feed roller and platen roller can be operated selectively or both simultaneously from a single motor. Capable of transmitting power and necessary for facsimile machine sending, receiving and copying operations A single on-board motor can provide sufficient power. For this reason, facsimile The drive system for the equipment can be made inexpensive with fewer parts, and at the same time, the overall equipment This makes it possible to promote miniaturization and weight reduction.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a drive mechanism showing one embodiment.

FIG. 2 is a cross-sectional view showing the transmitting operation of the main part in FIG. 1;

FIG. 3 is a sectional view showing the receiving operation of the main part in FIG. 1;

[Explanation of symbols]

1 motor 1a Motor output shaft 2 Feed roller 2a Pulley 3 Platen roller 3a Pulley 4 Motor gear 5 Transmission gear 6 Idler gear 7 Motor bracket 8 Arm 9 Feed gear 9a Pulley 10 Platen gear 10a pulley 11 Timing belt 12 Timing belt 13 Gear stopper 14 Solenoid 15 Towing rod

Claims (1)

[Scope of utility model registration request] Claim 1: A transmission gear driven by a motor, a feed gear that transmits power to a feed roller, and a platen gear that transmits power to a platen roller, the transmission gear comprising:
A drive mechanism for a facsimile machine, characterized in that it is displaceable between a neutral position where a feed gear and a platen gear are engaged, and a feed roller drive position where the feed roller is engaged only with the feed gear, and a platen roller drive position where the platen roller is engaged only with the platen gear.