JPH083411Y2 - Facsimile machine counter gear switching mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a counter gear switching mechanism in a facsimile apparatus.

(Prior Art) FIG. 2 is a configuration diagram of a counter gear switching mechanism of a conventional facsimile apparatus.

A conventional counter gear switching mechanism will be described below with reference to this drawing.

In the figure, 1 is a drive gear, 2 is a counter gear, 3 is a driven gear, and 4 is a counter lever.

Here, the base portion of the counter lever 4 is pivotally supported on the center portion of the drive gear 1, and the counter gear 2 is centered here.
Can be moved around the drive gear 1. Therefore, by operating the counter lever 4 that pivotally supports the counter gear 2 in the direction of the arrow, the counter gear 2 is meshed with the driven gear 3 or disengaged,
The power of the drive gear 1 is transmitted to or separated from the driven gear 3. In this case, the shaft of the counter gear 2 is rigidly supported by the bearing portion of the counter lever 4.

(Problems to be Solved by the Invention) However, in the apparatus having the above configuration, in order to eject the recording paper of the facsimile apparatus, when the counter gear 2 and the driven gear 3 are engaged with each other, that is, in FIG. When the driven gear 3 rotates in the counterclockwise direction and the driven gear 3 rotates in the counterclockwise direction, tooth jumps occur between the gears, which damages the teeth of the gears and produces an unpleasant sound when the counter gears are meshed. There was a problem.

The present invention eliminates the above-mentioned problems, prevents damage to gear teeth, and does not generate unpleasant noise when the counter gears are engaged with each other. It is an object to provide a switching mechanism.

(Means for Solving the Problems) In the present invention, in a counter gear switching mechanism of a facsimile apparatus, a reversible rotation type drive gear and a base end portion are pivotally supported by a support shaft of the drive gear, and a tip end portion is A counter lever that supports a counter gear that meshes with the drive gear and a driven gear that discharges or jams a recording sheet that meshes with the counter gear are provided, and the counter gear is supported at the tip of the counter lever. An elongated hole is formed so as to receive the shaft and allow the support shaft of the counter gear to move in the swinging direction of the counter lever.

(Operation) According to the present invention, in a counter gear switching mechanism of a facsimile machine, a reversible rotation type drive gear, a base end portion is pivotally supported by a support shaft of the drive gear, and a tip end portion supports the counter gear. A counter lever and a driven gear that ejects or engages the recording paper that meshes with the counter gear are provided, and the tip end portion of the counter lever receives the support shaft of the counter gear and the support shaft of the counter gear. Since the elongated hole that allows the counter lever to move in the swinging direction is formed, tooth skipping does not occur between the gears even when the recording paper of the facsimile machine is discharged or caught, and the counter does not move. The gear meshes smoothly.

In particular, when the recording paper of the facsimile machine is discharged, the gear teeth are not damaged and the counter gear can be smoothly switched.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an operation explanatory view of a counter gear switching mechanism showing an embodiment of the present invention. FIG. 1 (a) is a view showing a state before meshing of the counter gear, and FIG. FIG. 1 (c) is a diagram showing a state in which the counter gear is meshed to eject the recording paper of the facsimile apparatus.
FIG. 4 is a diagram showing a state in which a counter gear meshes with a recording sheet of a facsimile machine so as to mesh with the recording sheet.

FIG. 1A shows a state before the counter gears are meshed with each other, and in this state, the power of the drive gear 1 is not transmitted to the driven gear 3.

Next, as shown in FIG. 1B, when the rotation direction of the drive gear 1 is driven counterclockwise, the counter gear 2 is moved by the counter lever 4, and the counter gear 2 and the driven gear 3 are meshed with each other. It At the time of this meshing, the bearing portion for receiving the shaft of the counter gear 2 provided at the tip portion of the counter lever 4 is provided with the elongated hole 5 for relief which is hollowed out in the swinging direction of the counter lever 4, so that the counter gear The shaft of 2 moves in the direction opposite to the pressing direction of the counter lever 4, which causes the teeth to escape and prevents the teeth of the gear from being damaged. In the meshed state, the counter gear 2 rotates clockwise, and the driven gear 3 rotates counterclockwise.

Therefore, the recording paper 6 of the facsimile machine is shown in FIG.
The recording paper 6 is discharged in the direction of the arrow.

Next, as shown in FIG. 1 (c), the rotation direction of the drive gear 1 is driven clockwise to engage the counter gear 2 and the driven gear 3. Then, the counter gear 2 rotates counterclockwise and the driven gear 3 rotates counterclockwise, so that the recording paper 6 of the facsimile machine is caught.

As described above, with the simple structure of providing the escape long hole 5 which is hollowed out in the width direction of the tip end portion of the counter lever 4, the counter gear can be ejected or caught in the recording paper of the facsimile machine. It is possible to smoothly switch the counter gear 2 without damaging the teeth of 2.

Note that the present invention is not limited to the above embodiment, and various modifications are possible based on the gist of the present invention.
They are not excluded from the scope of the present invention.

(Effects of the Invention) As described in detail above, according to the present invention, the following effects can be achieved.

(1) Whether the recording paper is ejected or jammed in the facsimile apparatus, tooth skipping does not occur between the gears, and the counter gear meshes smoothly.

In particular, when the recording paper of the facsimile machine is discharged, the gear teeth are not damaged and the counter gear can be smoothly switched.

(2) Further, no unpleasant sound is generated when the counter gear is meshed when the recording paper of the facsimile machine is discharged or caught.

Moreover, although the above-mentioned configuration is extremely simple, its practical effect is great.

[Brief description of drawings]

FIG. 1 is an operation explanatory diagram of a counter gear switching mechanism according to the present invention, and FIG. 2 is a configuration diagram of a conventional counter gear switching mechanism. 1 ... drive gear, 2 ... counter gear, 3 ... driven gear, 4 ...
Counter lever, 5 ... elongated hole for escape, 6 ... recording paper.

Claims (1)

[Scope of utility model registration request] 1. A counter gear switching mechanism in a facsimile apparatus, comprising: (a) a reversible rotation type drive gear; and (b) a base end portion pivotally supported by a support shaft of the drive gear, and a tip end portion of the drive gear. A counter lever that supports a counter gear that meshes with the gear; and (c) a driven gear that meshes with the counter gear and that discharges or jams the recording paper. (D) the counter lever at the tip of the counter lever. A counter gear switching mechanism for a facsimile machine, characterized in that an elongated hole is formed so as to receive a gear support shaft and allow the counter gear support shaft to move in a swinging direction of the counter lever.