JP2014006517A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure having a switch 50 interlocking with opening/closing operation of two doors, while preventing damage to the switch 50 even if the door is slammed or pushed excessively.SOLUTION: A switch 50 is fixed to a device body. An interlocking member 60 interlocks with opening/closing operation of two doors, causes the switch 50 to be an energization state when both two doors are closed, and causes the switch 50 to be a non-energization state when at least one of the doors is opened. The interlocking member 60 includes an arm 61 which interlocks with opening/closing of a first door, a switch pressing member 62 that moves with respect to the arm 61, and a leaf spring 63 provided between the switch pressing member 62 and the second door. The switch pressing member 62 is biased toward the switch 50 via the leaf spring 63 when the second door is closed.

Description

  The present invention relates to an image forming apparatus such as a copying machine, a printer, a facsimile machine, or a multifunction machine of these, and more particularly to an image forming apparatus having at least two doors in the apparatus main body.

  In an image forming apparatus such as a copying machine, various doors are provided in the apparatus body. These doors are opened and closed when, for example, a service person performs maintenance or repair of the image forming apparatus, or a user performs jam processing or toner supply. On the other hand, various electrical components that are activated by energization are arranged in the apparatus main body. Therefore, there has been conventionally known a configuration that cuts off the power supply to such an electrical component for safety when the door of the apparatus main body is opened.

  Here, if a switch for switching between energization and de-energization of an electrical component is provided for each of a plurality of doors, the number of components increases. Therefore, an apparatus that uses one such switch for two doors has been proposed. (See Patent Document 1).

  The invention described in Patent Document 1 is movably supported by a switch body and movable in conjunction with opening and closing operations of a first door, and a switch that moves in conjunction with opening and closing operations of a second door And a main body. When the first door and the second door are both closed, the movable part comes into contact with the contact provided on the switch body, the switch is energized, and at least one of the doors is open. Furthermore, the movable part is separated from the contact point so that the switch is in a non-energized state. For this reason, in the case of the invention described in Patent Document 1, in the closed state of the first door, the movable part is held at a position where it can come into contact with the contact of the moving switch body, and the second door is closed. In the state, the switch body is held at a position where the moving movable part can come into contact with the contact.

Japanese Patent No. 3516301

  In the case of the invention described in Patent Document 1 described above, any of the movable part and the switch body is held at a position where the movable part and the contact point can contact each other with any door closed. For this reason, when the other door is changed from the open state to the closed state, there is a possibility that the movable part and the contact point come into strong contact. For example, when the movable part is held at a predetermined position when the first door is closed, if the second door is strongly closed or further pushed in from the closed state, the contact of the switch body becomes the movable part. Strongly abuts. In this case, since the movable portion is held at a predetermined position by the first door, it is difficult to retreat even if the contact of the switch body is in strong contact. As a result, the switch may be damaged.

  Moreover, in the case of the invention described in the above-mentioned Patent Document 1, the switch body is moved by the opening / closing operation of the second door. For this reason, force acts on the components inside the switch body by the movement of the switch body. Therefore, when the second door is strongly closed, there is a possibility that a large force acts on the internal parts to cause damage.

  In view of such circumstances, the present invention has a structure that includes a switch that switches in conjunction with opening and closing operations of two doors, and the switch is damaged even if the door is strongly closed or excessively pushed. Invented to realize a structure capable of suppressing the above.

  The present invention includes a first door and a second door that are provided in an openable and closable manner in the apparatus main body, a switch that is fixed to the apparatus main body and switches between energization and non-energization of electrical components in the apparatus main body, In conjunction with the opening and closing operations of the first door and the second door, the switch is energized when both the first door and the second door are closed, and the first door And an interlocking member that turns off the switch when at least one of the second door is in an open state, and the interlocking member is interlocked with an opening / closing operation of the first door, The switch between a first position when the first door is in a closed state and a second position when the first door is in an open state that is farther from the switch than the first position. A first moving member that moves in the direction of moving in the direction of far and away, and a direction of moving in the direction of the switch The switch is supported movably with respect to the first moving member, and when the first moving member is in the first position, the switch is energized by applying a biasing force toward the switch, When the urging force to the switch side is released, the switch is de-energized, and when the first moving member is in the second position, the switch regardless of the urging force to the switch side. Is disposed between the second moving member for de-energizing and the second door and the second moving member, and when the second door is closed, the second moving member And an elastic member that applies an urging force to the switch side and releases the urging force to the switch side when the second door is in an open state.

  According to the present invention, since the elastic member is disposed between the second door and the second moving member, the elastic member absorbs the load when one of the doors is strongly closed or excessively pushed. Thus, damage to the switch can be suppressed. Further, since the switch itself is fixed to the apparatus main body and does not move by the door opening / closing operation, the switch is less likely to be damaged.

1 is a perspective view of an image forming apparatus according to an embodiment of the present invention. Similarly front view. The schematic block diagram of the internal structure of an apparatus main body. The perspective view of the image forming apparatus which made the 1st door and the 2nd door open state. The perspective view of an interlocking member and a switch in the state where the 1st door and the 2nd door are closed. The perspective view of an interlocking member and a switch in the state where the 1st door and the 2nd door are open. The top view of an interlocking member and a switch in the state where the 1st door and the 2nd door are closed. The top view of an interlocking member and a switch in the state where the 1st door is an open state and the 2nd door is a closed state. The top view of an interlocking member and a switch in the state where the 1st door is closed and the 2nd door is open. The top view of an interlocking member and a switch in the state where the 1st door and the 2nd door are open. The perspective view of a leaf | plate spring. The top view which shows the gravity center position with respect to the rotation center of a leaf | plate spring.

  An embodiment of the present invention will be described with reference to FIGS. First, a schematic configuration of the image forming apparatus according to the present exemplary embodiment will be described with reference to FIGS. 1 to 4.

[Image forming apparatus]
The image forming apparatus 100 includes an apparatus main body 101, an image reading unit 102 disposed above the apparatus main body 101, and a paper feeding unit 103 disposed below the apparatus main body 101. Such an image forming apparatus 100 is configured to have both a copier function and a facsimile function. In addition, the image reading unit 102 is a so-called digital multi-function peripheral that performs image formation by converting image information (optical signal) of a document into an electric signal.

  As shown in FIGS. 1 and 2, a paper discharge space 4 in which an image-formed sheet is discharged in the apparatus main body is formed above the apparatus main body 101 and below the image reading unit 102. In the present embodiment, by forming the paper discharge space 4 in this way, a wing-less operation that does not require a paper discharge tray on the side of the apparatus is achieved. As a result, it is possible to realize the image forming apparatus 100 that is space-saving and has no protrusion on the side surface of the apparatus.

  As shown in FIG. 3, an electrophotographic print engine is disposed inside the apparatus main body 101. That is, an image forming unit 150 that forms an image on a conveyed sheet, a fixing device 151 that fixes an image formed on the sheet by the image forming unit 150 to the sheet, and the like are incorporated. The image forming unit 150 includes, for example, a photosensitive drum, a charging member, an exposure device, a developing device, and a transfer unit. The surface of the photosensitive drum is charged to a predetermined potential by a charging member. Based on the image information read by the image reading unit 102, an electrostatic latent image is formed on the surface of the photosensitive drum by an exposure device such as a laser. The electrostatic latent image is developed with toner by a developing device, and the toner image developed with toner is transferred to a sheet by a transfer unit. The sheet on which the toner image is transferred is pressed and heated by the fixing device 151 to fix the toner image. The sheet on which the toner image is fixed is discharged into the discharge space 4 described above.

  As described above, the sheet conveyed to the image forming unit 150 is supplied from the sheet feeding cassette 21 of the sheet feeding unit 103. The sheet feeding cassette 21 is a front loading type that is pulled out to the front side of the apparatus to replenish sheets. Therefore, a pull-out handle is provided at the center of the front surface of the cassette.

  The image forming apparatus 100 configured as described above has a plurality of doors so that a serviceman and a user can access the inside of the apparatus main body 101 for maintenance and jam processing. For example, the image forming unit 150 includes a first door 24 for performing maintenance and a second door 25 for removing a jammed sheet.

  The first door 24 and the second door 25 are each provided in the apparatus main body 101 so as to be openable and closable, and are opened as shown in FIG. 4 when performing the above-described maintenance or jam processing. In the present embodiment, the first door 24 is rotated around the lower part of the apparatus main body 101 by a hinge provided on the front surface of the apparatus main body 101. The second door 25 is provided on the side surface of the apparatus main body 101, and is rotated in the lateral direction of the apparatus main body 101 by a hinge provided at the rear of the apparatus main body 101. Note that the positional relationship between the first door and the second door may be reversed, and the direction of rotation may be the lateral direction or the lower center.

  When either of the first door 24 and the second door 25 is opened, energization is performed for electrical components such as the charging member, the developing device, and the fixing device 151 of the image forming unit 150 in the apparatus main body. Is cut off. On the other hand, when both the first door 24 and the second door 25 are closed, the electrical component is energized.

  For this purpose, in this embodiment, a switch 50 is provided that switches between energization and de-energization of the electrical components in conjunction with the opening and closing operations of the first door 24 and the second door 25. That is, in the present embodiment, when one of the first door 24 and the second door 25 is opened, the energization is interrupted by two switches that are individually arranged, not by two switches. A single switch is also used. Hereinafter, the configuration of this portion will be described with reference to FIGS.

[Switches and interlocking members]
In the present embodiment, the interlocking member 60 is provided in order to switch the switch 50 in conjunction with the opening / closing operation of the first door 24 and the second door 25 as described above. The switch 50 is fixed to the apparatus main body 101 and switches between energization and non-energization for the electrical components in the apparatus main body. As shown in FIG. 4, the switch 50 is fixed at the inside of a corner 152 where the front surface provided with the first door 24 and the side surface provided with the second door 25 are continuous.

  Further, as shown in FIGS. 5 to 10, the switch 50 includes a switch body 51, a switch plate 52 as an elastic movable portion, and a contact 53. The switch plate 52 is fixed at the base end to the switch body 51, comes into contact with a protrusion 62 </ b> B of a switch pressing member 62 described later, and can be elastically deformed in the moving direction of the switch pressing member 62. The contact 53 is provided on the switch main body 51 and comes into contact with the switch plate 52 to turn on the switch 50.

  The interlocking member 60 is disposed at a position adjacent to the switch 50 inside the corner portion 152. In conjunction with the opening and closing operations of the first door 24 and the second door 25, the switch 50 is energized when both the first door 24 and the second door 25 are closed. On the other hand, when at least one of the first door 24 and the second door 25 is open, the switch 50 is turned off.

  For this purpose, the interlocking member 60 includes an arm 61 as a first moving member, a switch pushing member 62 as a second moving member, and a leaf spring 63 as an elastic member. The arm 61 is interlocked with the opening / closing operation of the first door 24, and is between the first position shown in FIGS. 5, 7, and 9 and the second position shown in FIGS. 6, 8, and 10. The switch 50 moves in the direction of moving near and far. Here, the first position is a position when the first door 24 is in a closed state, and the second position is farther from the switch 50 than the first position, and the first door 24 is in an open state. Is the position of time.

  Further, the first door 24 is provided with an engaging protrusion 24a so as to protrude from the corner 152 side portion of the inner surface. An engaged portion 61 a that engages with the engaging protrusion 24 a and moves the arm 61 to the switch side with the closing operation of the first door 24 is provided at the base end portion that is a part of the arm 61. . The engaged portion 61 a has an inclined surface for inclining the arm 61 toward the switch 50 as the engaging protrusion 24 a moves toward the closing operation direction of the first door 24.

  In the present embodiment, the arm 61 includes a first swing shaft supported by a part of the apparatus main body 101 in a direction in which a distal end portion, which is a portion that supports a switch pressing member 62 to be described below, moves toward and away from the switch 50. It is supported so as to be swingable around 61b. Therefore, the engaging projection 24a engages with the engaged portion 61a at the base end of the arm 61 in accordance with the opening / closing operation of the first door 24, so that the arm 61 is centered on the first swing shaft 61b. Swing.

  The switch pushing member 62 is supported so as to be movable with respect to the arm 61 in the direction of moving toward and away from the switch 50. The switch pushing member 62 has a main body portion 62A extending in a direction intersecting the moving direction (substantially vertical direction in FIG. 7), and a projecting portion 62B projecting toward the switch 50 side from a longitudinal intermediate portion of the main body portion 62A. In the present embodiment, the longitudinal base end portion of the main body portion 62A of the switch pushing member 62 is provided at the distal end portion of the arm 61, and the second swing shaft 62a parallel to the first swing shaft 61b is the center. The arm 61 is swingably supported.

  As shown in FIGS. 5 and 7, such a switch pressing member 62 energizes the switch 50 by applying an urging force to the switch side when the arm 61 is in the first position. On the other hand, as shown in FIG. 9, even when the arm 61 is in the first position, the switch 50 is deenergized by releasing the biasing force toward the switch. On the other hand, as shown in FIGS. 6, 8, and 10, when the arm 61 is in the second position, the switch pushing member 62 does not energize the switch 50 regardless of the presence or absence of the urging force to the switch side. Put it in a state.

  The leaf spring 63 is disposed between the second door 25 and the switch pushing member 62. Then, as shown in FIGS. 5, 7, and 8, when the second door 25 is in the closed state, an urging force to the switch side is applied to the switch pushing member 62. On the other hand, as shown in FIGS. 6, 9, and 10, when the second door 25 is in the open state, the urging force toward the switch side is released. Such a plate spring 63 is formed by bending a plate-shaped member obtained by punching a metal plate such as iron or stainless steel into a predetermined shape, and a rotating member 64 formed of a resin material is fixed to the plate-shaped member. Do it. Therefore, the plate spring 63 is a first plate portion 63a that is a door-side engaging portion, a second plate portion 63b that is a moving member-side engaging portion, and an elastic portion, which are formed by bending a plate-like member. The bending part 63c and the rotation member 64 are provided.

  In this embodiment, it arrange | positions so that the 1st board part 63a and the 2nd board part 63b may oppose, and the base end parts of these 1st board parts 63a and the 2nd board part 63b are connected by the bending part 63c. It is configured as follows. The bent portion 63c is elastically deformed, so that the first plate portion 63a and the second plate portion 63b can move elastically in the direction in which the first plate portion 63a and the second plate portion 63b move far and near. Moreover, as shown in FIG. 11, the rotation member 64 is integrally fixed to the 1st board part 63a. The rotating member 64 is rotatably supported by a shaft (not shown) that is parallel to the first swing shaft 61 b and supported by a part of the apparatus main body 101. For this purpose, the rotation member 64 is formed with a rotation hole 64d that can be fitted to the shaft. As a result, the leaf spring 63 is rotatable about the axis fitted in the rotation hole 64d (rotation center). In this embodiment, the rotation member 64 is formed of a resin material having low sliding resistance between the rotation hole 64d and the shaft.

  Further, as shown in FIG. 12, the center of gravity position J is disposed at a position where the leaf spring 63 moves (rotates) by its own weight in the direction I away from the switch 50 in a state where the urging force toward the switch 50 is released. Is done. That is, the center-of-gravity position J is disposed on the side away from the switch 50 with respect to the center (rotation center K) of the rotation hole 64d of the rotation member 64 fixed to the first plate portion 63a. As a result, the second door 25 changes from the closed state shown in FIGS. 7 and 8 to the open state shown in FIGS. 9 and 10, whereby the leaf spring 63 rotates by its own weight in a direction away from the switch 50.

  Further, the first plate portion 63a is a part of the second door 25 and engages with an engaging protrusion 25a protruding from the corner 152 side portion of the inner surface, and when the second door 25 is in a closed state. The switch pushing member 62 is biased toward the second moving member. The second plate portion 63b engages with a first protrusion 62b provided at the longitudinal end portion of the main body portion 62A of the switch pushing member 62 so that the switch pushing member 62 can be biased to the switch side. The bent portion 63c is provided between the first plate portion 63a and the second plate portion 63b, and when the first plate portion 63a is urged toward the switch pushing member 62 as shown in FIGS. The switch pressing member 62 is elastically biased toward the switch side by the second plate portion 63b. The force by which the leaf spring 63 elastically biases the switch pushing member 62 is set to be larger than the elastic restoring force of the switch plate 52 of the switch 50.

  In addition, a second protrusion 62c as a disengagement engagement portion is provided on a part of the main body portion 62A of the switch pressing member 62 on the opposite side of the first protrusion 62b across the second plate portion 63b. . The second protrusion 62c engages with the second plate portion 63b, and allows the switch pushing member 62 to move in the direction away from (retracts from) the switch 50 together with the second plate portion 63b. That is, when the leaf spring 63 rotates in the direction away from the switch 50 due to its own weight, the switch pushing member 62 moves in the direction away from the switch 50 by the second plate portion 63b engaging with the second protrusion 62c. .

  In the case of the present embodiment, a coil spring 70 is provided as a separating direction urging portion that urges the arm 61 in a direction away from the switch 50. The coil spring 70 includes a first engagement portion 71, a second engagement portion 72, and a coil portion 73. The first engaging portion 71 is a rotation restricting portion that is engaged with a fixed portion (not shown) of the apparatus main body 101 in order to restrict its rotation. The second engaging portion 72 engages with a part of the arm 61. That is, the second engaging portion 72 is engaged with the side surface on the proximal end side of the arm 61 by bending the distal end portion. The coil part 73 is an elastic part that biases the first engaging part 71 and the second engaging part 72. That is, the coil portion 73 is provided between the first engagement portion 71 and the second engagement portion 72, and is biased so that the second engagement portion 72 swings in the direction of arrow A in FIG. Yes.

  The coil spring 70 thus configured biases the arm 61 by the second engagement portion 72 in the direction of arrow A in FIG. 7, that is, the direction in which the tip of the arm 61 is retracted from the switch 50.

[Operation of switch and interlocking member]
The operation of the switch mechanism including the switch 50 and the interlocking member 60 of the present embodiment configured as described above will be described. First, when the first door 24 moves from the open state to the closed state, the engagement protrusion 24a of the first door 24 moves in the direction of arrow B in FIG. Engage with. Then, due to the engagement between the engaging protrusion 24a and the engaged portion 61a, which is an inclined surface, the arm 61 swings in the direction of arrow C in FIG. 7, and the arm 61 moves to the first position.

  Further, when the second door 25 moves from the open state to the closed state, the engagement protrusion 25a of the second door 25 moves in the direction of arrow D in FIG. 63a is engaged. Then, when the first plate portion 63a is pushed by the engaging projection 25a and moves toward the switch 50, the bent portion 63c is elastically deformed, and the second plate portion 63b moves the switch pushing member 62 in FIG. It is elastically biased in the direction of arrow E through the first protrusion 62b.

  In this case, if the arm 61 exists in the first position, the projection 62B of the switch pushing member 62 pushes the switch plate 52 of the switch 50 and the switch plate 52 is brought into contact 53 as shown in FIGS. The switch 50 is energized. Then, the image forming apparatus 100 enters a standby state in which it can operate. On the other hand, if the arm 61 exists in the second position, as shown in FIG. 8, even if the switch pushing member 62 is pushed in the direction approaching the switch 50, the switch plate 52 is not pushed and the switch plate 52 is not pushed. And the contact 53 do not come into contact with each other.

  On the other hand, when the first door 24 moves from the closed state to the open state, the engagement protrusion 24a of the first door 24 moves in the direction opposite to the arrow B direction in FIG. The engagement with the engaging portion 61a is released. Then, as shown in FIGS. 8 and 10, the arm 61 swings in the direction of arrow A by the elastic force of the coil spring 70, and the arm 61 moves to the second position. At this time, regardless of whether the second door 25 is in the closed state (FIG. 8) or the open state (FIG. 10), the switch 50 is in a non-energized state.

  That is, as shown in FIG. 8, when the second door 25 is in the closed state, the switch pushing member 62 is urged by the engagement protrusion 25 a of the second door 25 via the leaf spring 63. On the other hand, when the arm 61 is moved to the second position, the distal end of the arm 61 is retracted from the switch 50, and the proximal end portion of the main body 62A of the switch pushing member 62 that is swingably supported by the distal end of the arm 61. Is also retracted from the switch 50. In this state, since the distal end portion of the main body portion 62A of the switch pushing member 62 is biased by the second plate portion 63b of the leaf spring 63, the switch pushing member 62 swings around the second swing shaft 62a. It is tilted so that its tip moves closer to the switch 50 side. However, the protrusion 62B that urges the switch plate 52 is disengaged from the position where the switch plate 52 is brought into contact with the contact point 53 when the base end portion of the main body 62A is retracted from the switch 50. Therefore, even if the switch pushing member 62 is urged by the leaf spring 63, the arm 61 moves to the second position, so that the switch plate 52 moves in the direction of arrow F in FIG. It leaves | separates from the contact 53 and the switch 50 will be in a non-energized state.

  Further, as shown in FIG. 10, when the second door 25 is in the open state, the switch pushing member 62 is not biased by the leaf spring 63, so that the arm 61 moves to the second position, so that the switch The push member 62 moves away from the switch 50. As a result, the switch plate 52 is moved by the elastic restoring force in the direction of arrow F in FIG. 10 and is separated from the contact 53, so that the switch 50 is in a non-energized state.

  Further, when the second door 25 moves from the closed state to the open state, the engaging protrusion 25a of the second door 25 moves in the direction of arrow G in FIGS. The engagement with the first plate portion 63a is released. At this time, regardless of whether the first door 24 is in the closed state (FIG. 9) or the open state (FIG. 10), the switch 50 is in a non-energized state.

  That is, as shown in FIG. 9, when the first door 24 is in the closed state, the arm 61 is in the first position. On the other hand, the leaf spring 63 from which the urging force from the engagement protrusion 25a is released rotates by its own weight. As a result of the engagement between the second plate portion 63b of the plate spring 63 and the second protrusion 62c, the switch pressing member 62 swings around the second swing shaft 62a in the direction of arrow H in FIG. As a result, when the switch pressing member 62 is separated from the switch 50, the switch plate 52 is moved by the elastic restoring force in the direction of arrow F in FIG.

  Further, as shown in FIG. 10, when the first door 24 is in the open state, when the second door 25 is moved from the closed state to the open state, the switch pushing member 62 is changed from the state of FIG. 8 to the state of FIG. Become. As described above, when the first door 24 is in the open state, the arm 61 is in the second position, so that the switch 50 is in a non-energized state regardless of the state of the switch pushing member 62.

  Thus, in the case of the present embodiment, since the interlocking member 60 is provided, the switch 50 can be switched between the energized state and the non-energized state in conjunction with the opening and closing operations of the first door 24 and the second door 25. In addition, as described above, the interlocking member 60 energizes the switch 50 when both the first door 24 and the second door 25 are closed, and the first door 24 and the second door. When at least one of 25 is open, the switch 50 is turned off. Accordingly, since the first door 24 and the second door 25 can serve as one switch 50, the image forming apparatus 100 can be reduced in size, weight, and cost.

  In the case of the present embodiment, since the leaf spring 63 is disposed between the second door 25 and the switch pushing member 62, the load when one of the doors is strongly closed or excessively pushed is plate-shaped. Absorption by the spring 63 can prevent the switch 50 from being damaged. For example, when the first door 24 is strongly closed while the second door 25 is closed, the arm 61 swings toward the switch 50 with a strong force. The switch pressing member 62 supported at the tip of the arm 61 tends to strongly press the switch plate 52 of the switch 50. However, the force by which the switch pushing member 62 pushes the switch plate 52 is reduced by the elastic deformation of the leaf spring 63 provided between the engagement projection 25a of the second door 25.

  Further, when the second door 25 is strongly closed while the first door 24 is closed, the force applied from the engaging protrusion 25 a is absorbed by the elastic deformation of the leaf spring 63 and is urged by the leaf spring 63. The force by which the switch pushing member 62 pushes the switch plate 52 is reduced. Similarly, even if any door is further pushed in with the door closed, the force is absorbed by the leaf spring 63 and the force by which the switch pushing member 62 pushes the switch plate 52 is reduced. As a result, damage to the switch 50 can be reduced even if the door is strongly closed or excessively pushed.

  Further, since the switch 50 itself is fixed to the apparatus main body 101 and does not move by the door opening / closing operation, the switch 50 is less likely to be damaged. That is, in the present embodiment, the interlocking member 60 provided separately from the switch 50 is interlocked with the opening / closing operation of the first door 24 and the second door 25. Therefore, even if the first door 24 and the second door 25 are opened and closed, the switch 50 itself does not move. For example, even if one of the doors is strongly closed, the switch 50 moves. Therefore, it is possible to prevent a large force from being applied to the components inside the switch 50. As a result, the switch 50 is less likely to be damaged.

[Other Embodiments]
In the above-described embodiment, the first moving member and the second moving member constituting the interlocking member are respectively swinging members, but at least one member may be slid. For example, the first moving member can be slid in the direction of moving toward and away from the switch in conjunction with the opening and closing operation of the first door. In addition, the second moving member can be slid in a direction moving toward and away from the switch with respect to the first moving member. Even with such a configuration, the same effects as those of the above-described embodiment can be obtained.

  Moreover, you may use other elastic members, such as a coil spring, other than the above-mentioned leaf | plate spring as an elastic member which comprises an interlocking member. In addition, the engagement between the second plate portion 63b of the leaf spring 63 and the switch pressing member 62 is, for example, by forming an engagement hole in a part of the switch pressing member 62 and providing the engagement hole in the second plate portion 63b. Alternatively, the engaging portion may be inserted. Due to the engagement between the engaging portion and the engaging hole, the switch pushing member 62 can be biased toward the switch 50 and retracted from the switch 50. Further, the coil spring 70 can be omitted. In this case, the arm 61 is biased in a direction away from the switch 50 by the elastic restoring force of the switch plate 52 of the switch 50 via the switch pushing member 62. In the above-described embodiment, the leaf spring 63 as an elastic member is moved away from the switch 50 by its own weight in a state where the biasing force toward the switch 50 is released. However, such movement of the elastic member may be performed by separately providing an urging means such as a spring for urging the elastic member in the direction away from the switch 50, and by the urging force of the urging means. good.

  Further, the first door and the second door may have, for example, a sliding structure in addition to the structure that swings with respect to the apparatus main body as in the above-described embodiment.

  24 ... first door, 24a ... engagement projection, 25 ... second door, 25a ... engagement projection, 50 ... switch, 51 ... switch body, 52 ... Switch plate (elastic movable part), 53 ... Contact, 60 ... Interlocking member, 61 ... Arm (first moving member), 61a ... Engaged part, 61b ... First swing shaft, 62... Switch pushing member (second moving member), 62a... Second swing shaft, 62b... First projection, 62c. Direction engaging part), 63 ... leaf spring (elastic member), 63a ... first plate part (door side engaging part), 63b ... second plate part (moving member side engaging part), 63c: bending portion (elastic portion), 64: rotating member, 64d: rotating hole, 70: coil spring (separating direction biasing portion), 100: image forming apparatus 101 ... the device body

Claims (6)

A first door and a second door provided in the apparatus main body so as to be freely opened and closed;
A switch that is fixed to the device main body, and switches between energization and non-energization of electrical components in the device main body;
In conjunction with the opening and closing operations of the first door and the second door, the switch is energized when both the first door and the second door are closed, and the first door An interlocking member that deenergizes the switch when at least one of the door and the second door is open,
The interlocking member is
In conjunction with the opening and closing operation of the first door, the first position when the first door is in the closed state, and the first door is further away from the switch than the first position, the first door is in the open state A first moving member that moves in a direction to move to and away from the switch between the second position and
The switch is supported so as to be movable relative to the first moving member in a direction in which the switch moves far and near, and when the first moving member is at the first position, a biasing force toward the switch is applied. The switch is energized, the energizing force to the switch is released, the switch is de-energized, and when the first moving member is in the second position, the switch is energized. A second moving member that puts the switch in a non-energized state regardless of the presence or absence of power,
The second door is disposed between the second door and the second moving member. When the second door is in a closed state, a biasing force toward the switch is applied to the second moving member, and the second door An elastic member that releases the urging force toward the switch when the door is open.
An image forming apparatus. The elastic member engages with a part of the second door, and when the second door is in a closed state, the door-side engaging portion biased toward the second moving member, and the first A movable member side engaging portion that engages with the second movable member and biases the second movable member toward the switch, and between the door side engaging portion and the movable member side engaging portion. An elasticity provided to elastically bias the second moving member toward the switch side in the moving member side engaging portion when the door side engaging portion is biased toward the second moving member. And having a part,
The image forming apparatus according to claim 1, wherein: A disengagement direction engaging portion that engages the moving member side engaging portion and the second moving member, and allows the second moving member to move in a direction away from the switch together with the moving member side engaging portion. Have
The elastic member has a center of gravity disposed at a position where the elastic member moves under its own weight in a direction away from the switch in a state where the biasing force toward the switch is released.
The image forming apparatus according to claim 2, wherein: An engagement protrusion provided on the first door;
An engaged portion that is provided in a part of the first moving member and engages with the engaging protrusion when the first door is closed to move the first moving member to the switch side. And having
The image forming apparatus according to claim 1, wherein the image forming apparatus is an image forming apparatus. The switch is in contact with the second moving member and is elastically deformable in the direction of movement of the second moving member, and a contact that is in contact with the elastic movable portion and energizes the switch. Having
The image forming apparatus according to claim 1, wherein the image forming apparatus is an image forming apparatus. The first moving member is supported so as to be swingable around a first swinging shaft in a direction in which a portion supporting the second moving member moves far and away from the switch,
The second moving member is supported so as to be swingable with respect to the first moving member around a second swinging shaft parallel to the first swinging shaft.
The image forming apparatus according to claim 1, wherein the image forming apparatus is an image forming apparatus.

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