JPH0731257Y2 - OBM slider lock release mechanism - Google Patents

Description

TECHNICAL FIELD The present invention relates to a photoconductor magazine (OBM) slider unlocking mechanism for a plain paper facsimile, and more particularly, to a release position arbitrarily set using an interlocking mechanism and a slider stroke. The present invention relates to an OBM slider lock release mechanism that can be shortened to downsize the OBM slider lock mechanism.

2. Description of the Related Art Conventionally, in a facsimile machine using laser light, a method has been adopted to ensure safety by supplying power to a laser drive device through an interlock switch when opening an upper base of the device.

Furthermore, in a facsimile machine that uses a photosensitive body as a magazine for easy maintenance, the upper base is closed without the photosensitive body magazine being set, and the laser light is prevented from leaking to the outside. A method of providing an interlock switch has been proposed.

Such a device, as shown in FIG.
There is a photoconductor magazine 23 on the side, and the power supply (24V power supply 27) to the photoconductor magazine 23 is integrated with the slider part and the sector gear 25 on the upper base 21 side and the actuator part on the base 22 side. It is turned on / off by the OBM slider lock release mechanism 26.

For example, as shown in FIG. 2, when the upper base 21 is open, the slider 24, the sector gear 25 and the lock mechanism 26
The positional relationship with and is shown in FIG.

The slider 24 has a support pin 31 inserted in an elongated hole, and the support pin 31 is fixed to the upper base 21. Also, supported by a support pin 31 so as to be movable in the vertical direction,
Further, a spring provided between the slider 24 and the upper base 21 urges the photosensitive body magazine 23 in the direction.
Further, teeth are formed on one side of the slider 24, and a sector gear 25 is meshed with these teeth.

Further, the sector gear 25 has a slipper 32 and is rotatably supported by the upper base.

With such a configuration, when the upper base 21 is opened, the slider 24 is biased by the spring and moves downward by a predetermined amount. Along with this movement, the sector gear 25 rotates clockwise, and the stopper 32 comes into contact with the upper surface of the photoconductor magazine 23 to regulate the upward movement. That is, the photoconductor magazine 23 is locked by the stopper 32, and the 24V power supply 27 is directly shut off, so that the laser does not emit light when the upper base 21 is opened.

Also, when the upper base 21 is closed, the slider
24 and sector gear 25 and OBM slider unlock mechanism 2
The positional relationship with 6 is shown in FIG. 3 (b).

In this case, the upper base 21 and the base 22 are in contact with each other, and the OBM
The slider lock release mechanism 26 strikes the slider 24. Further, the slider 24 moves upward by a predetermined amount, the sector gear 25 rotates counterclockwise, and the stopper 32 also moves upward accordingly. Thus, the lock of the photoconductor magazine 23 by the stopper 32 is released, and by energizing the 24V power supply 27, the laser emits light only when the upper base is closed.

Therefore, when the upper base is open, the power supply is automatically stopped, and the interlock switch is inadvertently joined to prevent the laser from emitting light.

The mechanism including the stopper and slider is called the OBM slider lock mechanism. A mechanism for releasing the locked state by sliding the slider is called an OBM slider lock releasing mechanism.

However, in such an OBM slider lock release mechanism, since the actuator portion is integrally formed and the release position is determined by the length of the actuator, there is a problem that the release position cannot be easily changed. In addition, since the actuator portion has an integral shape and does not expand and contract, the stroke of the slider becomes large, making it difficult to miniaturize the slider lock mechanism.

The conventional facsimile machine is described, for example, in "Kyoritsu Research Center, Facsimile Guide '86 .'87, Japan Management Association (1986)".

Objective The purpose of the present invention is to improve such problems, to set the release position arbitrarily to the release position by using the interlock mechanism in which the release shaft and the actuator are connected by the spring, and shorten the slider stroke to OBM slider lock. An object of the present invention is to provide an OBM slider lock release mechanism capable of downsizing the mechanism.

To achieve the above object, the OBM slider unlocking mechanism of the present invention sets the abutting position between the slider and the actuator by opening / closing the upper base having the slider to turn on / off the power supply to the photoconductor magazine. O
In the OBM slider lock release mechanism for FF, an interlock mechanism in which a release shaft fixed to a base arranged below the upper base and the actuator are connected by a spring is provided, and the abutting position is determined by the length of the spring. The feature is that the lock position is arbitrarily set by setting.

FIG. 1 is a block diagram of an OBM slider lock mechanism in one embodiment of the present invention, FIG. 4 is an explanatory view of an OBM slider lock position in one embodiment of the present invention, and FIG. 5 is one embodiment of the present invention. 6 is an explanatory view of a slider lock release position in an example, FIG. 6 is an explanatory view of an actuator reduction start position in one embodiment of the present invention, and FIG. 7 is an explanatory view showing a state in which an upper base is closed in one embodiment of the present invention. Is.

As shown in FIG. 1, the OBM slider lock mechanism of this embodiment has a fulcrum pin 5, a slider spring 6, a slider 7, a sector gear 9, and a stopper on the upper base 1 side.
10 and 24V power supply 11 is provided, and a release shaft 2, an actuator 3, and a spring 4 are provided on the base 8 side. The upper base 1 has a power supply (24V power supply 11) to a laser driving device (not shown) as in the conventional case.
It also has a photoconductor magazine (OBM), and the power supply is turned on and off by opening and closing the upper base 1.

The slider 7 is slid up and down by a predetermined amount by the fulcrum pin 5, and a slider spring 6 provided between the slider 7 and the upper base 1 performs a slide repeating operation.

Further, one side of the slider 7 has a tooth profile, and a sector gear 9 is meshed with this tooth. The sector gear 9 is rotatably supported by the upper base 1 and has a stopper 10.

Further, the actuator 3 is connected to the release shaft 2 fixed to the base 8 side by a spring 4 to form an interlock mechanism. As a result, a part of the stroke of the slider 7 is also provided on the actuator 3 side.

The tension F ₁ of the slider spring 6 and the spring 4
The relationship with the tension F _{2 of} F is set to F ₁ <F ₂ .

With such a configuration, the operation from the state where the upper base 1 is opened (power supply is OFF) to the state where the upper base 1 is closed and abuts the base 8 and the power supply is turned ON will be described.

First, when the upper base 1 starts to be closed and the upper base 1 descends, the slider 7 and the actuator 3 come into contact with each other as shown in FIG.

In this case, the 24V power supply 11 is turned off by the stopper 10.

In addition, the tension F ₁ of the slider spring 6 is the spring 4
Since the tension is set to be smaller than the tension F _{2 of} the slider 7, the slider 7 starts to slide upward, and the sector gear 9 also rotates in accordance with this slide.

Thus, at the position of the fulcrum pin 5 shown in FIG.
The photoconductor magazine (OBM) lock by 10 is released.

Further, the upper base 1 approaches the base 8, the slider 7 moves upward and hits the fulcrum pin 5, and the slide ends at the position shown in FIG.

In this case, since the load on the spring 4 becomes the total weight of the upper base 1, the actuator 3 starts to shrink, and finally the upper base 1 is locked with the base 8 and set in the state shown in FIG. 7. That is, the power supply to the laser light emitting device is turned on, and the laser light emission becomes possible.

When the upper base 1 is opened to unlock the photoconductor magazine (OBM) from the state shown in FIG. 7, these operations are performed in the reverse order.

Effect According to the present invention, the stroke of the slider is also provided on the actuator side, so that the stroke of the slider can be reduced and the OBM slider lock mechanism can be downsized.

Also, by changing the actuator from the integral shape to the interlock mechanism, the shape of the actuator is not changed,
The lock position can be changed simply by changing the length of the spring.

[Brief description of drawings]

FIG. 1 is a block diagram of an OBM slider lock mechanism in one embodiment of the present invention, FIG. 2 is an explanatory view of an OBM slider lock release mechanism in a conventional facsimile machine, and FIG. 3 is a conventional OBM slider lock release mechanism. Operation explanation diagram,
FIG. 4 is an explanatory view of a slider lock position in one embodiment of the present invention, FIG. 5 is an explanatory view of a slider lock release position in one embodiment of the present invention, and FIG. 6 is an embodiment of the present invention. FIG. 7 is an explanatory view of the actuator contraction start position, and FIG. 7 is an explanatory view showing a state in which the upper base is closed in the embodiment of the present invention. 1: Upper base, 2: Release axis, 3: Actuator, 4: Spring, 5,31: Support pin, 6: Slider spring, 7, 24:
Slider, 8, 22: Base, 21: Upper base, 23: Photoconductor magazine (OBM), 9, 25: Sector gear, 26: OBM interlock release mechanism, 11, 27: 24V power supply, 10, 32: Stopper.

Claims (1)

[Scope of utility model registration request] 1. An opening / closing operation of an upper base having a slider sets an abutting position between the slider and an actuator to turn on / off power supply to a photoconductor magazine.
The OBM slider lock release mechanism includes an interlock mechanism in which a release shaft fixed to a base arranged below the upper base and the actuator are connected by a spring, and the abutting position is set by the length of the spring. By doing so, the OBM slider unlocking mechanism is characterized in that the lock position is set arbitrarily.