JPH0675412B2 - Live part shield device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a live part shield device, and more specifically, it can reliably shield a live part of a connector that is exposed to the outside when detached. The present invention relates to a live part shield device.

<Prior Art> Conventionally, in various devices, there is an increasing number of cases where it is necessary to make electrical connection between the device body and the attachment / detachment portion. In particular, in a copying machine, a paper feeding unit or the like is detachably attached to easily perform jam processing, or a copy processing unit is detachably attached to replace a photoconductor and replenish toner. In order to achieve the desired connection, a pair or a plurality of pairs of connectors are connected to each other. When the attachment / detachment portion is removed, the connector on the apparatus body side is not shielded at all.

<Problems to be Solved by the Invention> With the above configuration, a state in which the paper feed unit or the like is removed for jamming, or the copy process unit is removed for replacing the photoconductor or replenishing toner, etc. When the device body side connector is exposed to the outside and the human body comes into contact with the live part, there is a risk of electric shock.

In particular, according to the West German TV standard, live parts such as connectors and electric wires must not be touched by the human body even at a low voltage. Therefore, the configuration described above is insufficient from this point as well. It is something.

Further, in order to solve the above problem, it is possible to install an interlock circuit composed of a relay or the like in order to shield the energization to the live part with the detachable part removed, but if the number of pins of the connector increases Since the number of interlock circuits also increases, there is a problem that the configuration becomes complicated, there is a risk of miswiring, and the cost increases.

This invention has been made in view of the above problems,
An object of the present invention is to provide a live part shield device capable of shielding a live part of a connector with a simple structure so that there is no risk of contact with a human body.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the live part shield device according to the present invention has a main body side connector attached at a predetermined position of the main body of the device, and a one-way connector In a live part shield device provided in an electrical connection structure that includes a detachable connector that can be connected by approaching to, and removable by separating in the opposite direction, the live part shield device is provided at a predetermined position of the device body, and , A shield member movable between a shield position where the live part of the main body side connector is shielded on the back side and an open position where the live part can be opened, and the shield member at the shield position is located on the back side of the shield member. And a biasing member that biases the blocking member to the blocking position and biases the locking member toward the locking side, and a transparent member that is formed at a predetermined position of the blocking member and that opens in one direction. And a lock release member that is provided integrally with the detachable connector and that releases the lock member by inserting the through-hole portion. It is configured to be displaceable to the open position by receiving a directional force.

<Operation> With the live part shield device having the above configuration, when the detachable connector is detached from the main body connector, the biasing member biases the shield member to the shield position, and the lock member is removed. Since it is biased toward the lock side, the shielding member
While blocking the live part at the blocking position, the lock member
The shield member at the shield position is held from the back side.

As a result, even if an external force such as a person touching the shield member is applied from the outside, the locked state of the lock member is not released, so that the shield member is not displaced, and the shield state of the live part can be maintained.

Next, when the detachable connector is connected to the body connector, the detachable connector is moved in one direction to form a lock release member integrally provided with the detachable connector at a predetermined position of the shielding member. Insert the through hole,
Release the locked state of the lock member. Accordingly, the shielding member can be displaced to the open position where the live part can be opened. Therefore, when the detachable connector is brought closer to the main body side connector while the detachable connector is in contact with the shield member, The shielding member is displaced to the open position, and the main body side connector and the detachable side connector can be connected.

Further, when the attached detachable connector is detached from the main body connector, the shielding member in the free state is automatically displaced from the open position to the closed position and is now displaced to the closed position by the action of the biasing member. The locking member automatically holds the shielding member that is being opened. Further, in any of the above cases, there is no risk of the human body coming into contact with the live part.

<Example> Hereinafter, detailed description will be given with reference to the accompanying drawings illustrating an example.

FIG. 6 is a schematic diagram showing the internal structure of the copying machine.

Reference numeral (1) is a main body of the copying machine, and the partition plate (11) divides the inside into an upper chamber (12) and a lower chamber (13).
An optical system (2) for scanning exposure of a document (D) is provided in 2), a copy processing section (4) for forming a copy image on a copy paper (P) in a lower chamber (13), and a copy. A paper transport section (5) is provided.

Here, the optical system (2) includes a light source (2) including a light-emitting body (31), a main reflection plate (32), and a sub-reflection plate (33).
1), flat mirror (22) (23) (24), lens (25),
And a plane reflecting mirror (26), and by moving the light source (21) and the plane reflecting mirrors (22) (23) (24) in the direction indicated by the arrow A, the document (D) on the contact glass (14).
Is a structure that enables scanning exposure. Then, the light source (21) and the plane reflecting mirror (22) move integrally, and the plane reflecting mirrors (23) (24) also move integrally, so that the moving speed of the former is twice that of the latter. Is set to be

Further, as the copy paper transport unit (5), a paper feed roller (51
a) (51b) (51c), paper feed paths (52a) (52b) (52c), conveyance roller (53), registration roller (54), conveyance belt (55), heat fixing roller (56), and discharge roller (Five
7), and by selectively driving any of the paper feed rollers, any of the paper feed cassettes (16) (17) or (1
The copy paper (P) for one sheet is taken out from 8), guided to the copy processing section (4) to transfer the toner image, and the toner image is heated and fixed by the heat fixing roller (56), and then the receiving table ( 19) is configured so that the paper is ejected to the upper side, and in order to easily perform the jam processing in the part of the paper feed path (52a) (52b) (52c), the paper feed cassette mounting portion (5
0) (see also FIG. 7) as a whole Copier body (1)
It can be removed from. In addition, (10) is a manuscript stage.

Further, as the copy processing section (4), the charging charger (4) is provided around the photosensitive drum (41) which rotates in the direction indicated by C in the figure.
2), a blank lamp (B), a developing device (43), a transfer charger (44), a separation charger (45) and a cleaner (46) are arranged in this order, and the charging charger (4
The electrostatic latent image is formed by forming a document image on the outer surface of the photosensitive drum (41) uniformly charged by the blank lamp (2). After removing by B), the developing device (43) visualizes the toner image, the transfer charger (44) transfers the toner image onto the copy paper (P), and the cleaner (46) collects the residual toner. However, the present invention is not limited to this configuration, and it is also possible to use a copy processing unit having another conventionally known configuration such as one using a belt-shaped photoconductor.

FIG. 1 is a perspective view showing a live part shield device, in which a frame (8) is attached in proximity to the device body side connector (7). The frame (8) has side plate portions (81) parallel to each other, and a pair of parallel slide grooves (82) are formed on both side plate portions (81) to form each slide groove (82). A plate-shaped shielding member (83) having a protrusion (84) that engages with the connector is slidably supported between a connector shielding position and a non-shielding position, and further at a predetermined position close to the slide groove (82). The plate-like lock member (85) rotatably supported by the protrusion at the spring (86).
(See FIG. 2), it is always urged to rotate in one direction.
Then, the engaging groove (87) is provided at a predetermined position of the shielding member (83).
(See FIG. 2), a projection (88) that engages with the engagement groove (87) is integrally formed at a predetermined position of the lock member (85), and a shielding member ( The projection (80) formed at the predetermined position of the lock member (85) can be exposed to the outside through the notch groove (89) as the through hole formed at the predetermined position of 83).

Further, a rod-shaped unlocking member (91) which can come into contact with the projection (80) formed at the predetermined position of the lock member (85) through the cutout groove (89) is attached to the predetermined position of the detachable section side connector (9). ing.

In the figure, since the live part of the device body side connector (7) is concentrated on one side, only the live part (7a) can be shielded as the shielding member (83). I have to.

FIG. 2 to FIG. 5 are views for explaining a state in which the shielding state of the live part of the apparatus main assembly side connector fluctuates as the connectors are connected to each other. In each figure, A is A- in FIG.
A cross section taken along line A is shown, and B shows a cross section taken along line BB in FIG.

FIG. 2 shows a state in which both connectors (7) and (9) are removed, and the lock member (85) is rotated by the rotation urging force of the spring (86) to rotate the lock member (85). Accordingly, the shielding member (83) is slid to shield the live part (7a) of the apparatus body side connector (7). Then, the engaging groove (8
Even when the human body comes into contact with the shielding member due to the engagement between the protrusion (88) and the protrusion (88), the shielding member (83) slides and the live part (7a) of the device body side connector (7). The safety is ensured by ensuring that it is not exposed to the outside.

When connecting the detachable part side connector (9) to the mounting body side connector (7), first, as shown in FIG. 3, the lock release member (91) passes the notch (89) through the protrusion (80). By pushing, the lock member (85) is rotated against the spring (86) to disengage the engagement groove (87) from the projection (88).

Thereafter, as shown in FIG. 4, if the connector (9) is further moved toward the connector (7), the lock member (85) is further rotated and the tip corner portion of the connector (9) is shielded. The shield member (83) is moved in the direction of separating from the connector (7) by contacting the member (83).

Finally, as shown in FIG. 5, the lock member (85) is further rotated and the shield member (8
3) can be slid further.

In the above, the case where the connector (9) is connected has been described. However, when the connector (9) is detached, the live part (7a) of the apparatus main body side connector (7) is operated by operating in reverse. Can be reliably shielded.

The present invention is not limited to the above-described embodiment, and for example, the device body side connector (7) is provided with the live part (7a).
The shielding member (83) can be increased in size without being concentrated on one side, and the shielding member (83) can be enlarged, and the shielding member (83) can be of a rotating type. Various design changes can be made without changing the gist of the present invention. <Effects of the Invention> As described above, according to the present invention, the detachable portion side connector is moved toward the device body side connector when the connector is connected. It is possible to easily perform the connecting operation by simply performing the connection, and by removing the attachment / detachment side connector, the live part of the device body side connector can be automatically shielded by the shielding member, and the connection of the device body side connector is always performed. There is a unique effect that the live part can be shielded from contact with the human body.

[Brief description of drawings]

1 is a perspective view showing a live part shield device, FIGS. 2 to 5 are diagrams for explaining the operation of the shield device when a connector is connected, and FIG. 6 are diagrams for explaining the internal mechanism of a copying machine. FIG. 7 is an external perspective view of the copying machine. (7) ...... Device side connector, (9) ...... Detaching part side connector, (83) ...... Shielding member, (85) ...... Locking member, (89) ...... Notch groove, (91) ...... Locking Release member

Claims (1)

[Claims] 1. A body-side connector attached to a predetermined position of an apparatus body, and a detachable-side connector that can be connected to the body-side connector by approaching in one direction and can be detached by separating in the opposite direction. In the live part shield device provided in the electrical connection structure including the live part, the live part is provided at a predetermined position of the main body of the device, and the live part of the main body side connector is shielded from the back side and the live part can be opened. A shield member that is movable between the open position, a lock member that holds the shield member at the shield position on the back side of the shield member, and a shield member that urges the shield member to the shield position and moves the lock member to the lock side. A biasing member for biasing, a through-hole portion formed at a predetermined position of the shielding member and opening in one direction, and integrally provided with the detachable connector, and by inserting the through-hole portion. A lock releasing member for releasing the lock member, and the shielding member is configured to be displaceable to the open position by receiving a force in one direction in a lock released state by the lock releasing member. Electrical section shielding device.