JPH032916Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field This invention is an electrostatic recording device in which the fixing unit is removable from the main body of the machine.In particular, when the unit is pulled out, the hand inserted from the paper output slot of the machine is used to supply power to the unit. The present invention relates to an electrostatic recording device that prevents electric shock by touching the connector of the device.

2. Prior Art Electrostatic recording devices such as electrophotographic copying machines, facsimile machines, and computer output devices have a main body 1 as shown in FIG. As shown in FIG. Some have a drawer on the side that allows you to remove jammed paper.

In such an apparatus, the connector of the power supply line for supplying power to the fixing unit is disconnected and connected by the operation of attaching and detaching the fixing unit. Therefore, when the fixing unit is pulled out for jam removal, if the user inserts his/her hand through the paper ejection port 4, there is a risk that the user's hand may come into contact with the machine body side connector, which has been disconnected from the unit side connector. For this reason, conventionally, in order to prevent electric shock even if a service person or user's hand were to touch the connector, electricity was not allowed to flow to the main body connector via an expensive power relay that was activated when the fuser unit was pulled out. In the case of an apparatus that has a reversing mechanism in the post-fixing process and can be pulled out as a unit together with the fixing section, there is a disadvantage that the number of power relays is further increased, resulting in higher costs.

Purpose The present invention provides an electrostatic recording device that can prevent electric shock with a simple configuration, in view of the above-mentioned problems of conventional electric shock prevention means for electrostatic recording devices in which the fixing unit is detachable from the machine body. The purpose is to

Configuration The present invention, which solves the above-mentioned problems, is designed to prevent a person inserted from the paper ejection port from touching the main body side connector between the main body side connector, which is separated from the fixing unit side connector, and the paper ejection port of the machine. An interlocking mechanism is provided in which a shielding cover is provided, and the cover is moved between a shielding position and a retracted position in which the cover is retracted from the shielding position and does not interfere with normal connector connection or paper ejection in conjunction with the attachment/detachment operation of the fixing unit. It is characterized by having been provided.

Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

In the embodiment shown in FIGS. 3 and 4, the shielding cover 11 is swingably attached to the connector bracket 13 via a shaft 14 so that the shielding cover 11 can cover the front surface of the coupling surface of the machine body side connector 12. 3, and is biased clockwise in FIG. 3 by a spring 22. A cam follower 15 provided on the shielding cover 11 has an intermediate lever 1 pivotably supported around a shaft 16 implanted in the machine frame.
The cam surfaces 17a of No. 7 are engaged. intermediate lever 1
A cam follower 18 is pivotally supported on the cam surface 19 of the cam 19 fixed to the fixing unit 3.
It is possible to engage with a.

3 and 4 show an intermediate state in which the fixing unit 3 is returned from the pulled out state to the installed state, with the cam 19
This shows a state in which the cam surface 19a of the intermediate lever 17 is just beginning to come into contact with the cam follower 18 of the intermediate lever 17. In this state, the shielding cover 11 is rotated clockwise by the force of the spring 22, and its left end abuts against the cushion 20 attached to the connector bracket 13, completely covering the front surface of the main body side connector 12.

When the fixing unit 13 is pushed in the direction of the arrow from this state, the cam 19 moves along the guide roller 21.
moves, the cam surface 19a pushes the cam follower 18 of the intermediate lever 17 to the right, and the intermediate lever 17 rotates clockwise around the shaft 16. When the cam follower 15 is pushed to the right by the cam surface 17a, the shielding cover 11 rotates counterclockwise around the shaft 14 against the force of the spring 22, and ultimately, as shown by the chain line in FIG. Displaced to the indicated position. As a result, the unit side connector 23 fixed to the fixing unit 3 is connected to the main body side connector 12 without being obstructed by the shielding cover 11.

When the fixing unit 3 is pulled out from the installed state, the shielding cover 11 covers the front surface of the main body connector 12 by the spring 22 in the reverse order, so even if you insert your hand from the paper ejection port 4, it will not touch the front surface of the main body side connector 12. You can't touch it, and even if the connector is energized, you won't get an electric shock.

In the embodiment shown in FIGS. 5 and 6, the paper ejection port 4
A shielding cover 25 is swingably provided between a position for shielding the paper discharge port 4 and a position for opening it around a shaft 24 which is installed in the frame of the main body at the back side of the printer. A cam follower 26 is attached to the front end of the shielding cover 25. On the other hand, a cam 27 having a cam surface that slopes downward as it goes toward the back is fixed to the side surface of the fixing unit 3 on the paper ejection port side. is removed from the cam follower 26, the shielding cover 25 is lowered, and the lower edge abuts against a stopper 28 provided inside the lower edge of the paper ejection port 4, and is positioned at a position where the paper ejection port is closed. Therefore, when the fixing unit 3 is pulled out, the paper ejection port 4
become more difficult to obtain.

However, when the fixing unit 3 is pushed into a predetermined device position, the cam 27 engages with the cam follower 26, and as the fixing unit is pushed in, the engagement position rises, and ultimately the shielding cover 25 is closed as shown in FIG. Since the paper ejection port is brought to the position shown in the figure and held in that position, it does not interfere with paper ejection.

Effects As described above, according to the present invention, when the fixing unit is attached or detached, the connector on the machine main body side of the connector for supplying power to the fixing unit cannot be touched from the paper ejection port. There is no need to use a relay to prevent current from flowing to the connector, resulting in cost reduction.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of an electrostatic recording device in which the fixing section is removable as a unit, FIG. 2 is a sectional view of the fixing unit, FIG. 3 is a plan view of an embodiment of the present invention, and FIG. 4 5 is a sectional view showing another embodiment of the present invention, and FIG. 6 is a side view thereof. 1... Machine body, 3... Fixing unit, 4...
Paper ejection port, 11, 25...Shielding cover, 12, 23
... Connector, 15-19, 26, 27 ... Interlocking mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In an electrostatic recording device in which the fixing unit is detachable from the main body of the machine, and the connector for supplying power to the fixing unit is detached and connected by the detachment operation, A shielding cover that prevents a human hand inserted from the paper output port of the machine into the connector on the machine main body side, and an interlocking mechanism that displaces the cover between the shielding position and the retreat position in conjunction with the attachment/detachment operation of the fixing unit. An electrostatic recording device characterized in that: (2) The device according to claim 1 of the utility model registration, characterized in that the shielding cover is provided at a position where it can shield the contact/separation surface of the machine body side connector with the unit side connector immediately before. (3) The device according to claim 1, wherein the shielding cover is provided at a position where it can shield a paper discharge port of the machine.