JP5601717B2 - Image forming apparatus - Google Patents

Description

  The present invention relates to an image forming apparatus provided with a fixing device for protecting an image forming apparatus such as a copying machine, a printer, a facsimile, or a composite machine thereof from an external force such as an excessive shock or vibration in an earthquake or the like. is there.

  2. Description of the Related Art Conventionally, an image forming apparatus is provided with a caster on the bottom surface of the apparatus main body in order to move an installation place in an office or the like, and is moved to a predetermined position by a caster and locked on the caster at a predetermined position. It was fixed. However, if an external force such as an excessive impact or vibration is applied to the image forming apparatus main body due to an earthquake or the like, the impact force to the lock part of the caster becomes excessive, and the part that receives this large impact force is damaged or destroyed. May end up. Further, in a copying machine or the like in which the apparatus main body is bulky and the center of gravity is located above, the apparatus main body may not fall over even if the caster is locked.

  Therefore, in Patent Document 1, the image forming apparatus is prevented from falling using a wire. That is, one end of the wire is locked to a fixing member fixed to the floor surface of an office or the like. Then, the wire is passed through a fixing bracket fixed to the lower part of the apparatus main body, and is stretched so as to surround the lower part of the apparatus main body from the outside without loosening in a state of being in contact with the caster. Furthermore, the other end of the wire is locked to the floor surface via a lock member having a function of adjusting the length of the wire. When an excessive shock or vibration occurs due to an earthquake or the like, the wire is stretched by the lock member because the device body receives an excessive external force by locking the wire through the lock member. As a result, excessive external force is absorbed and the image forming apparatus is prevented from falling.

JP-A-9-280288 (paragraphs [0029] to [0033], FIG. 1)

  Normally, an image forming apparatus is configured to connect a power cord plug to a power outlet in an office or the like and supply power from the power cord to an electrical component in the apparatus main body. As electric parts of the image forming apparatus, there are a heater for heating a heating roller of a fixing device, a circuit board for applying a high voltage, and the like. In Patent Document 1 described above, when an excessive shock or vibration occurs due to an earthquake or the like, the wire stretches at the lock member portion and the device body can be prevented from falling, but it can be prevented from falling over. The supply of power cannot be stopped, and power is supplied to the heater and the circuit board, so that the heater may be left at a high temperature and the circuit board may be left at a high voltage.

  The present invention has been made in order to solve the above-described problems. When an external force such as an excessive shock or vibration is received in an earthquake or the like, the apparatus body is prevented from being overturned and power to an electrical component is prevented. An object of the present invention is to provide an image forming apparatus that stops supply of the image.

  In order to achieve the above object, an image forming apparatus according to a first aspect of the present invention includes a fixing member fixed to a floor surface or a wall surface, and a line that prevents the apparatus main body from overturning by being locked by the fixing member and applying tension. Power supply that supplies power received by the connector mounting unit to electrical components that enable functional operation of the image forming apparatus, and a connector mounting unit that can connect a power cord connector that receives power from an external power source A cut-off switch that can cut off the supply of power from the connector mounting portion to the power supply unit, and an operating mechanism that is movable in a direction to actuate the cut-off switch so as to cut off the power supply, The fixture is attached to the actuating mechanism, and the actuating mechanism operates the shut-off switch by applying tension to the fixture. It is characterized in that to move to.

  According to a second aspect of the present invention, the image forming apparatus further includes a return switch that enables power supply from the connector mounting portion to the power supply portion.

  According to a third aspect of the present invention, in the above image forming apparatus, the fixture is configured to be shorter than the power cord, and the operating mechanism is disposed in the vicinity of the connector mounting portion.

  According to a fourth aspect of the present invention, in the above image forming apparatus, the operating mechanism and the connector attaching portion are attached to the same frame.

  According to a fifth aspect of the present invention, in the above image forming apparatus, the image forming apparatus further includes a locking member that is disposed on a front surface side of the apparatus main body and that locks the length of the fixing tool in an adjustable manner. The one end of the main body extends from the rear or side surface of the main body to the outside of the apparatus main body, and the one end is locked to the fixing member. After that, the other end is locked to the locking member.

  According to a sixth aspect of the present invention, in the above image forming apparatus, the image forming apparatus further includes a sheet feeding unit that accommodates a drawable sheet on the front side of the apparatus body, and the fixing member is on a side surface side of the sheet feeding unit. Is extended from the rear surface portion or side surface portion of the apparatus main body to the locking member.

  According to a seventh aspect of the present invention, in the above image forming apparatus, the locking member holds a pair of locking portions that sandwich the fixture so that the length thereof can be adjusted, and a locked state of the pair of locking portions. Or it has the lock | rock part to cancel | release.

  According to an eighth aspect of the present invention, in the image forming apparatus, the one end of the fixing member is fixed to the fixing member, and the other end is locked to the operating mechanism. Yes.

  According to a ninth aspect of the present invention, in the above image forming apparatus, another fixing tool that is locked to a rear surface portion or a side surface portion of the apparatus main body is further provided, and the fixing tool is provided with respect to the other fixing tool. The apparatus main body is arranged at different heights from the floor surface on which the apparatus main body is installed.

  According to a tenth aspect of the present invention, in the above image forming apparatus, the operating mechanism and the shut-off switch shut off the power supply in response to opening and closing of a cover member that can be opened and closed in the apparatus main body. .

  According to the first invention, when an excessive impact or vibration is applied to the image forming apparatus due to an earthquake or the like, tension is applied to the fixture, and the apparatus main body and the floor surface or wall surface are locked by the tension applied to the fixture. For this reason, the apparatus main body is supported on the floor surface or wall surface via the fixture, and the apparatus main body is prevented from falling. Further, the operating mechanism moves in the direction of operating the cutoff switch due to the tension acting on the fixture, and the supply of power from the connector mounting portion to the power supply portion is interrupted by the operation of the cutoff switch. Accordingly, the power supply to the electrical parts such as the heater of the fixing device is stopped.

1 is a schematic sectional view of an internal configuration of an image forming apparatus according to a first embodiment of the present invention. 1 is a perspective view illustrating an appearance of an image forming apparatus according to a first embodiment. 1 is a schematic plan view of an image forming apparatus installed by a fixing device according to a first embodiment. The perspective view which shows arrangement | positioning of the fixing tool which is 1st Embodiment. Sectional drawing which shows the action | operation mechanism which act | operates the cutoff switch which is 1st Embodiment Sectional drawing which shows the state which the action | operation mechanism which is 1st Embodiment act | operated The figure which shows schematically the arrangement | positioning of the interruption | blocking switch which is 1st Embodiment, and an operation mechanism. The perspective view which shows arrangement | positioning of the latching member which latches the fixing tool which is 2nd Embodiment of this invention. Sectional drawing which shows the structure of the securing member which is 2nd Embodiment Schematic which shows arrangement | positioning of the fixing tool latched by the latching member which is 2nd Embodiment. Sectional drawing which shows the action | operation mechanism which is a modification of 2nd Embodiment The perspective view which shows the external appearance of the image forming apparatus provided with the fixing tool which is 3rd Embodiment.

  Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to these embodiments. Further, the use of the invention and the terms shown here are not limited thereto.

(First embodiment)
FIG. 1 is a schematic cross-sectional view of an internal configuration of an in-body discharge type image forming apparatus. Under the image forming apparatus 100, a cassette type paper feeding unit 10 is disposed. The paper feeding unit 10 has upper and lower two-stage paper feeding cassettes 10a and 10b, and sheets before printing are stacked and stored in the paper feeding cassettes 10a and 10b. The sheets housed in the sheet feeding cassettes 10a and 10b are fed out one by one from the selected sheet feeding cassette 10a (10b) by the sheet pickup roller 10d (10e), and the fed out sheets are sent out to the sheet transport path 11. It is.

  A manual feed tray 10 c is disposed on the right side surface of the image forming apparatus 100. The manual feed tray 10c can be loaded with paper having a size different from that of the paper feed cassettes 10a and 10b. The paper placed on the manual feed tray 10 c is sent out to the paper transport path 11.

  The sheet conveyance path 11 extends in the vertical direction of the apparatus main body 2 on the left side of the sheet feeding unit 10. The sheet fed from the sheet feeding unit 10 is conveyed to the registration roller pair 12 above the sheet conveying path 11. The registration roller pair 12 sends the paper toward the image forming unit 3 in synchronization with the timing of transferring the toner image onto the paper.

  A document reading device 6 is disposed above the image forming apparatus 100, and a platen (document pressing) 24 is provided on the upper surface of the document reading device 6 so as to be openable and closable. Is attached. When copying an original, the originals placed on the original conveying device 27 are separated one by one and sent to the original reading unit, and the original reading device 6 reads the image data of the original.

  An image forming unit 3 is disposed substantially at the center of the image forming apparatus 100. The image forming unit 3 includes a photoconductor 5 that is an image carrier, and further, around the photoconductor 5 in order along its rotation direction (A direction in the drawing), a charging unit 4, an exposure unit 7, and a developing unit. A unit 8, a transfer roller 13, and a cleaning unit 18 are provided. The toner is supplied to the developing unit 8 from the toner container 9. The cleaning unit 18 includes a cleaning member such as a blade, a brush, or a polishing roller, and removes and collects toner remaining on the surface of the photoreceptor 5 by the cleaning member.

  When the surface of the photoreceptor 5 is uniformly charged with a predetermined polarity and potential by the charging unit 4, the exposure unit 7 is placed on the photoreceptor 5 based on the image data of the document read by the document reader 6. An electrostatic latent image of the original image is formed.

  The developing unit 8 supplies charged toner to the surface of the photoconductor 5 and develops the electrostatic latent image on the photoconductor 5 to form a toner image. The toner image is transferred onto the paper by the transfer roller 13. The sheet on which the toner image has been transferred is conveyed to a fixing unit 14 disposed above the sheet conveyance path 11. After the toner image is transferred to the paper, the toner remaining on the surface of the photoconductor 5 is cleaned and collected by the cleaning unit 18, and the residual charge on the surface of the photoconductor 5 is removed by a static elimination device (not shown).

  The fixing unit 14 includes a fixing roller 14a having a built-in heat source and a pressure roller 14b, and pressurizes and heats the paper on which the toner image has been transferred by the fixing roller 14a and the pressure roller 14b, thereby converting the toner image on the paper. Melt and fix. The sheet on which the toner image is fixed is conveyed to the upper right in the sheet conveyance path 11 and is discharged by the discharge roller pair 20 to the in-body discharge unit 17 which is a discharge unit.

  A reverse conveyance path 16 is provided that branches from the sheet conveyance path 11 between the fixing unit 14 and the discharge roller pair 20. The reverse conveyance path 16 is used when a toner image is fixed on one side of the paper and then formed on the other side of the paper as needed. It covers the periphery of the fixing unit 14, extends further below the apparatus main body 2, and joins the sheet conveyance path 11 near the registration roller pair 12.

  When performing double-sided printing, the paper on which the toner image is fixed on one side of the paper is discharged to the in-body paper discharge unit 17 while the branch portion between the paper conveyance path 11 and the reverse conveyance path 16 is moved to the rear of the paper. The discharge roller pair 20 is reversely rotated at the timing when the end passes. As a result, the paper is switched back, sent to the reverse conveyance path 16 with the printing surface of the paper turned upside down, and conveyed from the reverse conveyance path 16 to the registration roller pair 12 of the paper conveyance path 11 again. Thereafter, when the toner image is transferred to the other side of the sheet by the image forming unit 3, the sheet is fixed by the fixing unit 14 and discharged to the in-body sheet discharge unit 17.

  FIG. 2 is a perspective view showing an appearance of the image forming apparatus, and FIG. 3 is a schematic plan view of the image forming apparatus installed by a fixture. FIG. 4 is a perspective view showing the arrangement of fixtures with respect to the image forming apparatus.

  As shown in FIG. 2, in the image forming apparatus 100, the outer surface of the apparatus main body 2 is formed in a vertically long rectangular parallelepiped shape by a front surface portion 2a, side surface portions 2b on both sides, and a rear surface portion 2c. A sheet feeding unit 10, an operation panel 21, and a front cover 22 are disposed on the front surface 2a. The paper feeding unit 10 is pulled out to the front side 2 a side, and the paper before printing is accommodated in the paper feeding unit 10. The operation panel 21 includes an operation unit and a display unit made up of liquid crystal elements, and a print mode and the like are displayed on the display unit based on a command for the number of prints and a paper size from the operation unit. The upper end side of the front cover 22 is supported by the support shaft near the lower end so that the front cover 22 can be opened forward. Casters 2d are provided at the four corners of the bottom surface of the image forming apparatus 100. The image forming apparatus 100 is conveyed by the casters 2d, and is fixed to a floor surface of an office or the like by locking the casters 2d at a predetermined position. .

  As shown in FIG. 3, an anchor 55, which is a fixing member, is fixed to a wall surface 101 of an office or the like by press-fitting or screwing. On the rear surface portion 2c of the image forming apparatus 100, a wire 51 as a fixing tool is disposed. The wire 51 has a locking portion 51a having one end formed in a ring shape. The wire 51 is locked to the anchor 55 by the locking portion 51 a being hung on the anchor 55. The user adjusts the length and attaches the wire 51 to the anchor 55 so that the wire 51 is properly slackened or tensioned with a predetermined tension or less. The anchor 55 may be provided on the floor surface. Moreover, you may comprise so that the wire different from the wire 51 may be arrange | positioned by the rear surface part 2c. In this case, the anchor 55 may be provided on the wall surface 101 or the floor surface so as to correspond to another wire, or a plurality of wires may be locked together in one anchor 55. The fixing tool can use various linear members that have flexibility and have a tensile strength that can withstand predetermined impacts and vibrations. For example, in addition to a wire 51 made of stainless steel, a resin fiber shape such as a polyamide resin can be used. Ropes, wires, chains, belts, etc. can be used.

  As shown in FIG. 4, a connector mounting portion 31 is disposed on the rear surface portion 2 c of the image forming apparatus 100. The connector mounting portion 31 receives power from the outside of the apparatus, and can be connected to a power cord connector. An opening 2e is formed in the rear surface portion 2c in the vicinity of the connector mounting portion 31. The other end side of the wire 51 whose one end is locked to the anchor 55 (see FIG. 3) extends from the opening 2e to the inside of the apparatus main body 2, and is locked to an operating mechanism described later. The connector mounting portion 31 may be arranged on the side surface portion 2b of the apparatus main body 2. In this case, the wire 51 extends from the side surface portion 2b to the outside of the apparatus main body 2, and is locked to the wall surface 101 or the anchor 55 fixed to the floor surface.

  5 and 6 are cross-sectional views of the operating mechanism. FIG. 5 shows the operating mechanism in the installed state of the image forming apparatus 10, and FIG. 6 shows the operating mechanism in a state where an impact or vibration such as an earthquake has occurred.

  As shown in FIG. 5, the operation mechanism 35 engages the wire 51 and operates the cutoff switch 33 by the tension applied to the wire 51, and includes a wire support member 36, a switch pressing member 37, and a pair of A spring member 38 and a holding member (not shown) that holds the operating mechanism 35 movably in the left-right direction in FIG. 5 are provided.

  The wire support member 36 is formed in a U shape with a metal bar, and both ends of the U shape are attached to the switch pressing member 37. A ring-shaped locking part 51 b formed at the other end of the wire 51 is hung on the wire support member 36. When the wire 51 receives a predetermined tension in the left direction in FIG. 5 due to an impact or vibration such as an earthquake, the switch pressing member 37 moves in the left direction via the wire support member 36 and presses a cutoff switch 33 described later. (See FIG. 6).

  Each of the pair of spring members 38 is composed of a compression coil spring, is wound around the wire support member 36 and is in contact with the switch pressing member 37 and the frame 39. The switch pressing member 37 is biased in a direction away from the cutoff switch 33 by the spring member 38. Accordingly, when a predetermined tension is not applied to the wire 51 (when the image forming apparatus 100 is installed), the switch pressing member 37 is at a position separated from the cutoff switch 33 by the biasing force of the spring member 38, and the cutoff switch 33. Is not operating (state of FIG. 5). When a predetermined tension is applied to the wire 51 and the switch pressing member 37 moves in the left direction in FIG. 5 against the urging force of the spring member 38, the cutoff switch 33 is pressed (state in FIG. 6).

  The cutoff switch 33 supports the movable button 33a so that it can be pressed and is connected to the lead wires 40 and 40. When the movable button 33a is not pressed (the state shown in FIG. 5), the cutoff switch 33 holds the lead wires 40, 40 in the ON state. On the other hand, when the movable button 33a is pressed (the state shown in FIG. 6), the cut-off switch 33 is in the OFF state between the lead wires 40 and 40 unless the pressed position is held and the movable button 33a is returned with a predetermined force or more. Hold on. Accordingly, when the predetermined tension is not applied to the wire 51 (when the image forming apparatus 100 is installed), the cutoff switch 33 is in an on state, and the predetermined tension is applied to the wire 51 due to an impact or vibration such as an earthquake. When the operating mechanism 35 is activated, the shut-off switch 33 is switched to the off state, and the off state is maintained.

  FIG. 7 is a diagram schematically showing the arrangement of the cutoff switch 33 and its peripheral members when the image forming apparatus 100 is installed.

  The cutoff switch 33 is connected to the connector mounting portion 31 through one lead wire 40 and is connected to the power supply unit 46 through the other lead wire 40. The connector attachment portion 31 can be connected to the connector 45 of the power cord 42 and is supplied with external power from the plug 43 of the power cord 42.

  The power supply unit 46 supplies necessary electric power to each electrical component that enables the functional operation of the image forming apparatus 100, and can supply a large power of several hundred watts to a heater or the like of the fixing device. is there. The power supply unit 46 is supplied with power through the power cord 42, the connector attachment unit 31, the cutoff switch 33, and the lead wire 40.

  A return switch 41 is disposed in parallel with the cutoff switch 33 for the power supply unit 46. The return switch 41 is a switch that can be switched on and off between the lead wires 40 and 40. When the image forming apparatus 100 is installed, the return switch 41 is set to an off state. After the shut-off switch 33 is switched to an off state due to an impact or vibration such as an earthquake, the connector mounting unit 31 and the power supply unit 46 are energized by operating the return switch 41 from the off state to the on state. Power can be supplied. Since the return switch 41 is not frequently operated, it is preferable to provide the return switch 41 on the side surface 2b of the apparatus main body 2.

  The frame 39 is formed of a material having a relatively high strength such as a sheet metal and is fixed to the apparatus main body 2. The operating mechanism 35 and the cutoff switch 33 are mounted on the frame 39, and the connector mounting portion 31 is disposed in the vicinity of the operating mechanism 35 and is mounted on the frame 39.

  In the power cord 42, the plug 43 is connected to a power outlet, the connector 45 is connected to the connector mounting portion 31, and the plug 43 and the connector 45 are connected by a cable 44. The wire 51 locked to the anchor 55 and the operating mechanism 35 is configured to be shorter than the power cord 42.

  Thus, the wire 51 is configured to be shorter than the power cord 42, and the connector mounting portion 31 is disposed in the vicinity of the operating mechanism 35, so that impacts and vibrations such as earthquakes act on the wire 51 but act on the power cord 42. There is nothing. Therefore, even if an earthquake occurs, an inadvertent load is not applied to the plug 43 and the connector 45 of the power cord 42, the plug 43 and the connector 45 are not damaged, and a short circuit due to the damage can be prevented.

  In addition, the number of members can be reduced by attaching the operating mechanism 35 and the connector attachment portion 31 to the same frame 39, and the assembly work can be facilitated by unitization.

  When the image forming apparatus 100 including the wire 51 is installed on the floor surface, the image forming apparatus 100 is transported to a predetermined position, and the caster 2d is locked at the position. Since the wire 51 attached to the operating mechanism 35 extends from the rear surface portion 2c of the apparatus main body 2 to the outside, the wire 51 is then loosened or stretched by a tension below a predetermined level. In this way, the wire 51 is locked to the anchor 55 fixed to the wall surface 101 or the floor surface while adjusting the looseness of the wire 51.

  When an excessive impact or vibration is applied to the image forming apparatus 100 due to an earthquake or the like, a predetermined tension is applied to the wire 51, and the image forming apparatus 100 and the wall surface 101 or the floor surface are locked by the tension applied to the wire 51. In addition, the image forming apparatus 100 is supported on the wall surface 101 or the floor surface via the wire 51, and the image forming apparatus 100 is prevented from falling. Further, the operating mechanism 35 presses the cutoff switch 33 by the tension acting on the wire 51, and the cutoff switch 33 is switched to the OFF state and held. By holding the cutoff switch 33 in the OFF state, the supply of power from the connector mounting portion 31 to the power supply portion 46 is cut off, and the power supply to the electrical components such as the heater of the fixing device is stopped.

(Second Embodiment)
8-10 is a figure which shows the latching member which concerns on 2nd Embodiment of this invention. 8 is a perspective view showing the arrangement of the locking members for locking the wires, FIG. 9 is a cross-sectional view showing the structure of the locking members, and FIG. 10 is locked by the locking members. It is the schematic which shows arrangement | positioning of a wire. Note that FIG. 8 omits the paper feed cassette in order to explain the arrangement and configuration of the locking members. The arrangement and configuration of the locking members not provided in the first embodiment will be mainly described, and the description of the same parts as in the first embodiment will be omitted hereinafter.

  As shown in FIG. 8, the front surface 2a of the apparatus main body 2 is provided with a cassette opening 2h in which a paper feed cassette 10a (paper feed unit 10, see FIG. 2) is detachably mounted on the front surface 2a side. . The cassette opening 2h extends from the front surface 2a to the inner wall of the rear surface 2c. A locking member 61 is disposed in the space on the front surface portion 2 a side between the cassette opening 2 h and the side surface portion 2 b of the apparatus main body 2.

  The locking member 61 is attached to the standing wall 2i disposed at a position recessed in the apparatus main body 2 from the front surface 2a, and locks the wire 51 so that the length can be adjusted. The wire 51 is provided so as to protrude from the upper opening 2f of the standing wall 2i to the front surface 2a side and to be accommodated inside the apparatus main body 2 from the lower opening 2g. The locking member 61 locks the wire 51 between the openings 2f and 2g.

  Therefore, the wire 51 extends in the vicinity of the side surface side of the paper feeding unit 10 from the rear surface part 2c (see FIG. 10) to the front surface part 2a in the apparatus main body 2. Normally, a large number of constituent members of the image forming apparatus 100 are not provided on the side surface side of the sheet feeding unit 10, and a space penetrating from the rear surface part 2 c to the front surface part 2 a of the apparatus main body 2 is easily formed. Therefore, the space of the apparatus can be used effectively, and the apparatus does not increase in size even if a fixture such as the wire 51 is arranged. Even if the wire 51 is configured to extend in the vicinity of the side surface side of the sheet feeding unit 10 from the side surface portion 2b near the rear surface portion 2c of the apparatus main body 2 to the front surface portion 2a, the same effect as the above configuration is achieved. Play. When providing a wire other than the wire 51, another wire may be disposed in a space penetrating from the rear surface portion 2 c of the apparatus main body 2 to the front surface portion 2 a on the other side surface side of the sheet feeding unit 10.

  As shown in FIG. 9, the locking member 61 includes an upper locking plate 62, a lower locking plate 63, a hinge 64, and a lock lever 65.

  The upper locking plate 62 has a wire holding portion 62 a that holds the wire 51, and the lower locking plate 63 has a wire holding portion 63 a that holds the wire 51. The wire holding portions 62 a and 63 a are both formed in a semicircular shape slightly smaller than the wire 51. When the opposing surfaces of the upper locking plate 62 and the lower locking plate 63 are brought into contact with each other, the wire 51 is clamped and clamped by the wire holding portions 62a and 63a so as to come out of the locking member 61. There is no.

  The hinge 64 attaches the upper locking plate 62 to the lower locking plate 63 so as to be opened and closed. The lock lever 65 is a thin plate material having a spring property, one end of which is fixed to the upper locking plate 62, and the other end is formed to have a lock portion 65a and a release operation portion 65b. A convex portion 63 b is formed on the lower locking plate 63, and when the opposing surfaces of the upper locking plate 62 and the lower locking plate 63 are brought into contact with each other, the lock portion 65 a of the lock lever 65 is moved to the lower locking plate 63. It is latched by the convex part 63b. By moving the release operation portion 65b in the left direction in FIG. 9, the lock lever 65 is unlocked with respect to the convex portion 63b of the lower lock plate 63.

  After adjusting the length of the wire 51, the wire 51 is placed on the wire holding portion 63 a of the lower locking plate 63, and the upper locking plate 62 is rotated around the hinge 64 so as to abut against the lower locking plate 63. Then, the lock lever 65 is locked to the convex portion 63 b of the lower locking plate 63.

  With this configuration, the length-adjusted wire 51 can be easily and reliably locked by the locking member 61 without using a special tool, thereby improving workability. If the lower locking plate 63 is formed integrally with the standing wall 2i (see FIG. 8), the configuration of the device is simple.

  As shown in FIG. 10, the wire 51 is attached by a locking member 61 so as to be adjustable in length. That is, the wire 51 extends from the rear surface portion 2c of the apparatus main body 2 to the outside, and one end thereof is locked to the anchor 55 of the wall surface 101, while extending from the rear surface portion 2c toward the front surface portion 2a.

  The operation mechanism 35 used in the first embodiment is disposed between the rear surface portion 2c and the front surface portion 2a. The operating mechanism 35 operates the cutoff switch 33 by a predetermined tension applied to the wire 51 as described above, and is attached to the frame 39 together with the cutoff switch 33. The connector attachment portion 31 (see FIG. 7) used in the first embodiment is not attached to the frame 39 in the second embodiment, and although not shown, the apparatus main body in the vicinity of the rear surface portion 2c or the side surface portion 2b. 2 is provided.

  The wire 51 extending from the rear surface portion 2c toward the front surface portion 2a is wound around the wire support member 36 of the operation mechanism 35 at least once and attached to the operation mechanism 35, and further, the opening 2f of the standing wall portion 2i. Projecting to the front surface portion 2 a side and extending to the locking member 61. In the section from the anchor 55 to the actuating mechanism 35, the wire 51 is properly loosened or stretched by a tension below a predetermined value, and in the section from the actuating mechanism 35 to the locking member 61, the wire 51 is connected to the actuating mechanism 35. Can be moved to press the shut-off switch 33 and is loosened to some extent. After the length of the wire 51 is adjusted and locked by the locking member 61, the wire 51 is accommodated inside the apparatus main body 2 from the opening 2g of the standing wall 2i. As a result, the extra wire 51 on the leading end side is not cluttered around the standing wall 2 i and does not hinder the drawer operation of the paper feeding unit 10.

  When the image forming apparatus 100 including the wire 51 is installed on the floor surface, the image forming apparatus 100 is transported to a predetermined position, the caster 2d is locked at the position, and then the wire 51 is fixed to the wall surface 101 or the floor surface. Lock to the anchor 55. Since the wire 51 is provided to extend from the rear surface portion 2c of the apparatus main body 2 to the front surface portion 2a, next, the slackness of the wire 51 is adjusted at the front surface portion 2a of the apparatus main body 2, and the length adjustment of the wire 51 is performed. When completed, the wire 51 is locked by the locking member 61. The surplus wire 51 is stored inside the apparatus main body 2 from the opening 2g of the standing wall 2i. Thus, the wire 51 can be attached to the image forming apparatus 100 at the front surface portion 2a of the apparatus main body 2, and the installation workability is good.

  When an excessive impact or vibration occurs in the image forming apparatus 100 due to an earthquake or the like, a predetermined tension is applied to the wire 51, and the image forming apparatus 100 and the wall surface 101 or the floor surface are locked by the tension applied to the wire 51. For this reason, the image forming apparatus 100 is supported on the wall surface 101 or the floor surface via the wire 51, and the image forming apparatus 100 is prevented from falling. Further, the operating mechanism 35 is moved by the tension acting on the wire 51 to press the cutoff switch 33, and the cutoff switch 33 is switched to the OFF state and held. By holding the cutoff switch 33 in the OFF state, the supply of power from the connector mounting portion 31 to the power supply portion 46 is cut off, and the power supply to the electrical components such as the heater of the fixing device is stopped.

  FIG. 11 is a cross-sectional view illustrating an operating mechanism that is a modification of the third embodiment. In this modified example, an open / close detection lever 23 is provided for moving the operating mechanism 35 in conjunction with opening / closing of the front cover 22 (see also FIG. 2) to press the cutoff switch 33. The open / close detection lever 23 is a substantially L-shaped member, and is rotatably supported by the apparatus main body 2 by a fulcrum 23a formed on one free end side. A first arm 23b extends linearly from the fulcrum 23a in a substantially horizontal direction, and a first protrusion 23c is formed at the end portion. A second arm 23d extends further from the end in a direction perpendicular to the end, and a second protrusion 23e is formed at the free end. The apparatus main body 2 is provided with a compression coil spring 24 supported at one end, and abuts from below on the opposite side of the fulcrum 23a of the first arm 23b and urges upward. The biasing force of the compression coil spring 24 is set to be stronger than the total biasing force of the spring members 38 of the operating mechanism 35.

  The front cover 22 is rectangular and has a planar shape (see FIG. 2), and is rotatably supported by the apparatus main body 22 by a fulcrum 22a provided near the lower end. A plate-shaped detection piece 22b is erected in the vicinity of the fulcrum 22a. When the front cover 22 is closed (solid line in FIG. 11), the detection piece 22b extends toward the back of the apparatus body 2, and the lower side near the tip is arranged at a position where it abuts on the first protrusion 23c of the open / close detection lever 23. Has been. The second protrusion 23 e of the open / close detection lever 23 is in contact with the surface of the switch pressing member 37 of the operation mechanism 35 that is opposite to the surface opposite to the surface facing the cutoff switch 33.

  When the front cover 22 is closed, the open / close detection lever 23 is rotated counterclockwise in FIG. 11 against the urging force of the compression coil spring 24 by the contact between the detection piece 23b and the first protrusion 23c. Thereby, the switch pressing member 37 is separated from the cutoff switch 33 and is turned on. In this state, the wire 51 operates the operation mechanism 35 in the same manner as in the second embodiment.

  Next, when the front cover 22 is opened from the closed state, the detection piece 22b moves upward and retracts from the protrusion 23c (broken line in FIG. 11). Accordingly, the open / close detection lever 23 is rotated clockwise in FIG. 11 by the urging force of the compression coil spring 24. Then, the switch pressing member 37 is moved against the urging force of the spring member 38, and the cutoff switch 33 is pushed in to turn off. Therefore, since the power is always turned off when the front cover 22 is opened, the work can be performed safely.

  Since the power control by opening / closing the front cover 22 and the power control in the event of excessive shock or vibration can be performed with only one shutoff switch 33, space saving and cost reduction of the apparatus main body can be achieved. Further, when the side cover outside the reversing conveyance path 16 can be opened and closed so that the reversing conveyance path 16 is opened for jam processing, the configuration of the above-described modified example is used. It is also possible to perform power supply control with one cutoff switch 33 by power supply control and opening / closing of the side cover. Furthermore, it is also possible to implement power supply control by opening / closing the wire 51 and the front cover 22 and opening / closing the side cover with a single shielding switch by combining the respective configurations.

(Third embodiment)
FIG. 12 is a perspective view illustrating an appearance of an image forming apparatus including a wire according to the third embodiment. In the third embodiment, a plurality of wires are provided in the image forming apparatus.

  The wires 51 and 52 are disposed on the rear surface portion 2 c of the apparatus main body 2. The wire 51 is disposed on one side surface 2b side of the apparatus main body 2, one end is locked to an anchor fixed to a wall surface (not shown), and the other end is an opening of the rear surface portion 2c as in the first embodiment. It extends from the portion 2e (see FIG. 4) to the inside of the apparatus main body 2 and is locked to the operating mechanism 35. In addition, the structure which the other end part side of the wire 51 is latched so that length adjustment is possible to the latching member 61 (refer FIG. 8) provided in the front surface part 2a similarly to 2nd Embodiment may be sufficient.

  The wire 52 is locked to an anchor-shaped locking member 71 provided on the other side surface 2 b side of the apparatus main body 2. The locking member 71 is disposed at a position higher than the floor surface with respect to the opening 2e of the rear surface portion 2c. Therefore, the wire 52 is disposed at a position higher than the wire 51 from the floor surface. In addition, the wire 52 may be arrange | positioned with respect to the wire 51 in the low position from a floor surface, and you may make it the structure which provides another wire.

  As described above, when at least two wires 51 and 52 are arranged at different heights from the floor surface on which the apparatus main body 2 is installed, vibrations and shocks such as earthquakes act on the image forming apparatus 100. By locking the upper part and the lower part of the main body 2 at the same time, it is possible to prevent the image forming apparatus 10 from falling down more effectively by preventing the upper part from falling and suppressing the slipping at the lower part.

  INDUSTRIAL APPLICABILITY The present invention is used for an image forming apparatus provided with a fixing device for protecting an image forming apparatus such as a copying machine, a printer, a facsimile, or a composite machine thereof against an excessive force such as an earthquake or an external force such as vibration. be able to.

2 apparatus main body 2a front surface part 2b side surface part 2c rear surface part 2e-2g opening part 10 paper feeding part 31 connector attachment part 33 cutoff switch 35 operation mechanism 36 wire support member (operation mechanism)
37 Switch pressing member (actuating mechanism)
38 Spring member (actuating mechanism)
39 Frame 40 Lead wire 41 Return switch 42 Power cord 43 Plug 44 Cable 45 Connector 46 Power supply 51, 52 Wire (fixture)
55 Anchor (fixing member)
61, 71 Locking member
62 Upper locking plate (locking part)
62a, 63a Wire holding part 63 Lower locking plate (locking part)
63b Convex part 64 Hinge 65 Lock lever 65a Lock part 65b Release operation part 100 Image forming apparatus 101 Wall surface

Claims (8)

A fixing member fixed to a floor surface or a wall surface;
A linear fixture that prevents the apparatus body from overturning by being locked by the fixing member and applying tension;
A connector mounting portion to which a connector of a power cord receiving power from an external power source can be connected;
A power supply unit that supplies power received by the connector mounting unit to electrical components that enable the functional operation of the image forming apparatus;
A cut-off switch capable of cutting off power supply from the connector mounting portion to the power supply portion;
An actuation mechanism movable in a direction to actuate the shut-off switch so as to shut off the power supply;
A locking member that is disposed on the front side of the apparatus main body and locks the length of the fixture so as to be adjustable;
With
The fixture is attached to the operating mechanism, extends from the rear or side surface of the apparatus main body to the outside of the apparatus main body, and the one end is locked to the fixing member, while the inside of the apparatus main body faces the front side. After extending and movably attaching the operating mechanism, the other end is locked by the locking member, and tension is applied to the fixture, whereby the operating mechanism operates the shut-off switch. And an image forming apparatus.   The image forming apparatus according to claim 1, further comprising a return switch that enables power to be supplied from the connector attachment unit to the power supply unit.   The image forming apparatus according to claim 1, wherein the fixture is configured to be shorter than the power cord, and the operating mechanism is disposed in the vicinity of the connector mounting portion.   The image forming apparatus according to claim 3, wherein the operation mechanism and the connector attachment portion are attached to the same frame. A paper feeding unit for storing a pullable paper on the front side of the apparatus body;
The fixture either in the vicinity of the side surface side of the paper feeding unit from face or side portion after the apparatus main body of claims 1 to 4, characterized in that is extended into the locking member The image forming apparatus described. The locking member, claims, characterized in that it has a pair of locking portions that sandwich the fastener adjustably length, and a locking portion for retaining or releasing the locked state of the pair of locking portions the image forming apparatus according to any one of 1 to claim 5. Another fixture that is locked to the rear surface portion or the side surface portion of the apparatus main body is further provided, and the fixture is arranged at a different height from the floor on which the apparatus main body is installed with respect to the other fixture. the image forming apparatus according to any one of claims 1 to 6, characterized in that the. The image forming apparatus according to claim 1, wherein the operation mechanism and the cutoff switch cut off power supply in response to opening and closing of a cover member provided in the apparatus main body so as to be openable and closable.

Images