JPH0581845U - Electrophotographic device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an electrophotographic apparatus capable of reliably preventing the deformation of the upper housing even when the opening / closing operation is repeated. This electrophotographic apparatus includes a main plate, a lower housing attached below the main plate, a middle housing attached above the main plate and having an opening on the upper surface, and an upper housing of the main plate. The swing frame includes a swing frame rotatably supported at one end, and an upper housing that is attached to the swing frame and closes an upper surface opening of the middle housing so as to open the swing frame. Each side plate is defined, a base end side connecting shaft that connects / fixes the base end parts on both sides of the shaft support side to each other, and a tip end side connecting shaft that connects the end parts of the both side plates to each other. The base end side connecting shaft is rotatably supported by the main plate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electrophotographic apparatus provided with an enclosure having a so-called clamshell structure.

[0002]

[Prior Art]

 Conventionally, in an electrophotographic apparatus provided with an enclosure of a so-called Clamche structure, as compared with a conventional electrophotographic apparatus having a structure in which a side plate on the front surface of the apparatus is opened, the upper surface of the printer mechanism (image forming means) is changed along with the opening operation. Since it is opened, it has the advantage that maintenance and inspection operations can be performed easily, and because it is easy to downsize the entire device, it is widely used as a compact electrophotographic device.

[0003]

[Problems to be solved by the device]

 Here, in such a conventional clamshell type electrophotographic apparatus, a structure is employed in which both ends of the upper housing are rotatably supported with respect to the main plate. Therefore, if the rotation center axes of both shaft support parts are not accurately aligned, the upper housing is deformed by repeating the rotation operation of the upper housing, and in the closed state, these upper housing parts are favorably overlapped with each other. There is a possibility that non-overlapping situations may occur, and improvements were requested.

Further, in order to exactly match the rotation center axis lines of both shaft support portions, it is sufficient to have one rotation support shaft arranged so as to extend over both side plates. In this case, a rotation support shaft extending in the width direction must be provided outside the frame structure, which is not desirable from the viewpoint of reducing the overall weight.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an electrophotographic apparatus capable of reliably preventing the deformation of the upper housing even when the opening / closing operation is repeated. Is to do.

[0006]

[Means for solving the problem]

 In order to solve the above problems and to achieve the object, an electrophotographic apparatus according to the present invention comprises a main plate, a lower housing mounted below the main plate, and an upper surface mounted above the main plate. A middle housing having an opening, an oscillating frame rotatably supported on one end of the upper surface of the main plate, and an upper mounted on the oscillating frame to openably close the upper opening of the middle housing. The swing frame includes a side plate that defines both sides, a base end side connecting shaft that connects and fixes the base end parts of the both side plates on the shaft support side to each other, and tip parts of the both side plates. And a tip end side connecting shaft for connecting the two to each other, and the base end side connecting shaft is rotatably supported with respect to the main plate. Thing is characterized in.

Further, in the electrophotographic apparatus according to the present invention, the swing frame is pivotally supported at a rear end portion thereof on a rear end portion of an upper surface of the main plate, and the base end side connecting shaft is rear end portion. And the distal end side connecting shaft is disposed on the front end side.

In the electrophotographic apparatus according to the present invention, both ends of the base end side connecting shaft are rotatably supported by a pair of mounting brackets fixed to the upper surface of the main plate. It is characterized by things.

In addition, in the electrophotographic apparatus according to the present invention, connecting bushes each having an outer peripheral surface having a circular cross-section are externally fitted to both ends of the proximal end side connecting shaft, and the outer peripheral surface of each connecting bush is The proximal end side connecting shaft is rotatably supported by sliding on the inner peripheral surface of the circular hole formed in the corresponding mounting bracket.

Further, in the electrophotographic apparatus according to the present invention, the mounting bracket includes a sleeve having a circular cross section and an outer flange integrally formed at an outer end of the sleeve. It is characterized in that the outer flange is slidably inserted through the corresponding side plate into the circular hole of the corresponding mounting bracket, and the outer flange is fixed to the outer surface of the corresponding side plate.

【Example】

 Hereinafter, a configuration of an embodiment of the electrophotographic apparatus according to the present invention will be described in detail with reference to the accompanying drawings in the case of being applied to a facsimile apparatus.

[Description of Overall Configuration] As shown in FIG. 1, the facsimile apparatus 10 according to the present embodiment automatically reads the image information of a transmission original in which a plurality of sheets are set at one time, one by one, The read image information is sent to the facsimile machine on the receiving side of the other party using the telephone line, and the image information transmitted from the facsimile machine on the other party's receiving side is transmitted via electrophotography using the laser scanning method. It is constructed so that it can be transferred (image formation) to a built-in paper (in this embodiment, a cut plain paper). On the other hand, the facsimile apparatus 10 is configured to have a so-called electronic copying function capable of copying (forming an image) the image information read from the original document on a built-in sheet. Further, the facsimile device 10 has a so-called printer function capable of transferring (forming an image) the image information transmitted from the information processing device, for example, through a connection line other than a telephone line to a sheet containing the image. Is also configured.

The facsimile apparatus 10 is mounted on the upper surface of the main plate 12 and the main plate 12 arranged substantially parallel to the mounting surface thereof, and has the above-described image forming function. The print mechanism 14, a swing frame 16 that is rotatably supported at the rear end of the main plate 12, and is swingable with respect to the main plate 12, and is disposed on the upper surface of the swing frame 16. An image reading mechanism 18 having the above-described image reading function, and a control panel 20 having a rear end rotatably supported by an intermediate portion of the swing frame 16 and swingable with respect to the main swing frame 16. Lower frames 22a, 22b fixed to both left and right sides of the lower surface of the main plate 12 and extending in the front-rear direction, and both lower frames 22a, 22b. The laser scanning unit 24 which is disposed in the space sandwiched between the main plate 12 and the lower surface of the main plate 12 and has a function of forming a latent image on the outer peripheral surface of the photosensitive drum (described later) of the print mechanism 14, The lower frames 22a and 22b each have four legs 26 fixed to the front and rear ends of the lower surface, respectively, and mounted on a mounting surface (not shown).

[Explanation of Enclosure 28] Further, as shown in FIGS. 2 and 3, the facsimile apparatus 10 is provided with an enclosure 28 that completely defines the outer surface thereof. In this embodiment, the enclosure 28 is arranged so as to surround the periphery of the space sandwiched by the lower frames 22a and 22b (that is, the portion below the main plate 12) and below the main plate 12. The lower housing 30 and the middle housing, which is continuously provided immediately above the lower housing 30 and surrounds the print mechanism 14 and is provided above the main plate 12. A housing (printer housing) 32 and an upper housing 34 which is continuously arranged immediately above the printer housing 32 and fixed to the swing frame 16 so as to openably close the upper opening of the housing 32. It is configured in a state in which it is divided into three parts. The control panel 20 is pivotally supported at the rear edge of the front opening so as to openably close the front opening formed in the front portion of the upper housing 34. There is.

As described above, since the enclosure 28 that defines the outer surface of the facsimile device 10 has the three-part structure including the lower housing 30, the printer housing 32, and the upper housing 34, after assembling all the internal structures, The enclosure 28 can be assembled in a state irrelevant to the internal structure, and the workability of assembling the facsimile device 10 can be improved. As shown in FIG. 4, the above-mentioned leg portions 26 are arranged at four corners of the substantially rectangular bottom surface of the facsimile apparatus 10, and as shown in FIGS. 5 and 6, respectively. It is fixed to the lower surfaces of the lower frames 22a and 22b. That is, in the fax machine 10, the main plate 12 does not have the enclosure 28 (particularly the lower housing 30) assembled therein during the assembly thereof, but the main plate 12 has the lower frames 22a, It will be stably placed on an assembly table (not shown) via the leg portions 26 fixed to the lower surface of 22b.

Further, with the lower housing 30 attached to the lower frames 22a and 22b, as shown in FIGS. 4 and 6, each leg portion 26 is formed on the lower housing 30 in a corresponding state. It is configured to be inserted through the through hole 30a formed of the stupid hole and taken out downward. As a result, the weight of the facsimile device 10 is basically received by the main plate 12 via the lower frames 22a and 22b while the facsimile device 10 is placed on the assembly table, and the enclosure 28 including the lower housing 30 is received. Will have no effect on. Therefore, an unnecessary load (self-weight) does not act on the enclosure 28, the risk of deformation due to receiving this load is eliminated, and thinning is achieved, so that the overall weight can be reduced. Become.

Although the details will be described later, the laser scanning unit 24 is set so as to be attached to the lower surface of the main plate 12 as shown in FIG. .. As shown in FIG. 6, a part of the laser scanning unit 24 (specifically, a laser beam outlet for image exposure on a photosensitive drum, which will be described later), is projected to the upper surface side of the main plate 12. Is set. Here, if the leg portion 26 is attached to the lower surface of the lower housing 30 and the lower housing 30 receives the load through the leg portion 26, the lower housing 30 is not assembled in advance. It becomes difficult to assemble No. 4, the work order is greatly restricted, and the workability is extremely deteriorated. However, in this embodiment, the leg portions 26 for receiving the load are fixed to the lower frames 22a and 22b in a state independent of the lower housing 30, so that the leather scanning unit 24 is configured so that After the lower frames 22a and 22b are assembled to the main plate 12, the lower frames 22a and 22b can be assembled to the lower surface of the main plate 12 at any time, so that the degree of freedom in workability is increased and the workability can be improved.

On the other hand, in the center of the rear part of the above-mentioned upper housing 34, as shown in FIGS. 2 and 3, a paper feed cassette 36 is inserted and a paper feed cassette mounting opening 34a also serving as a transfer paper take-in opening is formed. Further, document intake ports 34b for receiving the transmission originals are formed in front of the attachment ports 34a, respectively. Although not described, the paper feed cassette 36 is configured so that a large number of paper sheets of a predetermined size can be accommodated in a batch. Further, in the front surface of the printer housing 32, a paper ejection outlet 32a for ejecting the paper on which the image information is transferred is formed on the lower surface in a state of being positioned downward, and the reading operation is provided above the paper ejection opening 32a. A document discharge port 32b through which the transmitted document after the completion is discharged is formed. Further, as shown in FIGS. 1 and 2, the front surface of the lower housing 30 receives the paper ejected from the paper ejection port 32a and the transmission original document ejected from the document ejection port 32b. A paper discharge tray 38 is detachably attached. On the other hand, as shown in FIG. 2, a pair of guide portions 40a and 40b are provided at the above-mentioned original document intake port 34b so as to be movable along the width direction of the transmitted original document according to the size of the original document to be transmitted. A document tray 40 is detachably attached.

On the upper surface of the control panel 20 described above, various operation buttons 20a are arranged, and a display window 20b having a liquid crystal display device for displaying predetermined information to an operator is arranged. ing. An upper housing release button 42 is provided on the right side of the front surface of the control panel 20. The upper housing release button 42 is rotatably attached to the swing frame 16 and is rotated to push it up to lock the swing frame 16 to the main plate 12 in a closed state. 7 is released, the swing frame 16 and the upper housing 34 attached to the swing frame 16 can be rotated upward as shown in FIG. As a result, the upper opening of the printer housing 32, that is, the upper surface of the print mechanism 14 is opened over substantially the entire surface, and the operation of removing the paper jammed during the conveyance and the maintenance of each mechanism portion constituting the print mechanism 14 are performed. Etc. can be easily performed.

On the other hand, to the immediate left of the upper housing release button 42, a control panel release button 44 is arranged adjacent to it. The control panel release button 44 is rotatably attached to the control panel 20. By rotating the control panel release button 44 so as to push it down, the lock of the control panel 20 in the closed state to the swing frame 16 is released. Then, as shown in FIG. 8, the control panel 20 can rotate upward. As a result, the front opening of the upper housing 34, that is, the upper surface of the image reading mechanism 18 is opened over substantially the entire surface, and the operation of removing the document jammed during conveyance and each mechanism forming the image reading mechanism 18 are performed. It will be possible to easily perform maintenance of the parts. As shown in FIG. 9, a front opening 30b communicating with the front inner space in the lower space surrounded by the lower housing 30 is formed on the front surface of the lower housing 30 described above. The front opening 30b is openably closed by a front blind cover 30c (shown in FIG. 7). Incidentally, as will be described in detail later, in this front inner space, an adjustment board 46 for changing and adjusting, for example, a direct current resistance value, an electrostatic capacitance, etc. is accommodated in accordance with the standards of each country in the world. .. Then, by removing the front blind cover 30c, it is possible to adjust and set the DC resistance value, the electrostatic capacitance, etc. in the adjustment board 46 according to the standard of the country to be shipped. .

On the other hand, on the rear surface of the lower housing 30, as shown in FIG. 3, there is formed a rear opening 30d communicating with the rear inner space in the lower space. The rear opening 30d is openably closed by a rear blind cover 30e. In the rear inner space, as shown in FIG. 6, a pair of left and right board guide rails 48, 50 are parallel to each other in a state of extending in the front-rear direction on the lower surfaces of the lower frames 22a, 22b. It is installed in a state of being attached to. Guide grooves 48a and 50a are formed on the inner surfaces of the pair of substrate guide rails 48 and 50 facing each other.

A main control board 52 which controls the entire control of the facsimile apparatus 10 is supported in a state where both end edges are slidably guided by the guide grooves 48a and 50a. Then, by removing the rear blind cover 30e, the main control board 52 can be taken out of the enclosure 28 through the rear opening 30d. In this way, the main control board 52 can be very easily used as needed. Will be replaced.

The bottom portion of the lower housing 30 is formed with a bottom opening 30f which is slightly larger than the laser scanning unit 24, as shown in the bottom view of FIG. The opening 30f is openably closed by a bottom blind cover (not shown). Then, by removing the bottom blind cover, the laser scanning unit 24 can be easily put into and taken out from the lower space described above through the bottom opening 30f. In other words, during the assembly of the facsimile device 10, for example, by setting the intermediate assembly to the sideways state, the laser scanning unit 24 can be easily mounted on the main plate even after the lower housing 30 is assembled. The bottom blind cover 30g can be simply removed without removing the lower housing 30 even when the laser scanning unit 24 is replaced in the event of a failure. This replacement operation can be performed only by itself, and the workability of assembling the laser scanning unit 24 and the workability of the replacement thereof can be improved.

[Description of Document Tray] Next, the configuration of the document tray 40 described above and the receiving structure of the document tray 40 in the printer housing 32 will be described in detail with reference to FIGS. First, the original tray 40 is provided with a flat plate-like original placing table 54 on which an original is placed, as shown in a partially enlarged state in FIG. 10, and on the original placing table 54, the above description is given. A pair of left and right guide portions 40a and 40b are attached so as to be movable along the width direction. Inclined boss portions 56, 58 for supporting the document tray 40 on the upper housing 34 in a state of being inclined at a predetermined angle are integrally formed at both left and right sides of the front portion of the document placing table 54. Here, as shown in FIGS. 11 and 12, each of the inclined boss portions 56, 58 has a support surface 56a, which is inclined by a predetermined angle with respect to the extending surface of the document placing table 54 (that is, the document placing surface). 58a is provided in the latter half of the lower surface, and the supporting surfaces 56a and 58a are in close contact with the upper surface of the upper housing 34, so that the document placing table 54 is tilted by a predetermined angle with respect to the upper surface of the upper housing 34. It will be supported in an inclined state.

Further, projecting boss portions 60 and 62 projecting downward are integrally formed on the front half portions of the lower surfaces of the inclined boss portions 56 and 58, respectively. On the lower surface of each of the projecting boss portions 60 and 62, a projection that extends substantially parallel to the extending surface of the document mounting table 54 (document mounting surface) and that projects downward from the above-mentioned supporting surfaces 56a and 58a. Surfaces 60a and 62a are formed, respectively. At the lower ends of the projecting boss portions 60, 62, locking pins 60b projecting outward along the width direction, that is, from the left and right side surfaces of the corresponding projecting boss portions 60, 62, respectively. 62b is attached integrally.

On the other hand, as shown in FIG. 12, a tray holder 35 for receiving the document tray 40 is integrally attached to the upper surface of the upper housing 34 to which the document tray 40 is attached. Through holes 35a, 35b are formed on the upper surface of the tray receiving base 35 so that the pair of left and right locking pins 60b, 62b are inserted from above. Corresponding protruding bosses 60 and 62 are fitted to the tray receiving base 35 located immediately in front of the respective insertion holes 35a and 35b in a continuous state with the corresponding insertion holes 35a and 35b. Fitting holes 35c and 35d are formed. Here, the respective fitting holes 35c, 35d are set to have a size sufficient to form a predetermined space in front of the front surfaces 60c, 62c of the projecting boss portions 60, 62 fitted therein. Further, recesses 35e and 35f having a semicircular cross section for rotatably receiving the corresponding locking pins 60b and 62b from below are formed on the lower surface of the portion defining the both side edges of the respective fitting holes 35c and 35d. Has been done.

Since the original tray 40 and the tray receiving stand 35 to which it is attached are configured in this manner, when attaching the original tray 40 to the tray receiving stand 35, first, as shown in FIG. 14 in a substantially upright state. From this state, as shown in FIG. 14, the locking pins 60b, 62b are inserted through the corresponding insertion holes 35a, 35b, and the protruding bosses 60, 62b are inserted. Are fitted into the corresponding fitting holes 35c and 35d. In this way, the locking pins 60b and 62b are taken out below the lower surface of the upper housing 34.

After that, the portions where the supporting surfaces 56a, 58a of the inclined boss portions 56, 58 and the projecting surfaces 60a, 62a of the projecting boss portions 60, 62 intersect with each other are set behind the corresponding insertion holes 35a, 35b. As shown in FIG. 15, by rotating the document tray 40 as a whole in the counterclockwise direction in the state where it is applied to the upper edge of each end, as shown in FIG. , 62b enter into the corresponding recesses 35e, 35f from below, and are received in a rotatable state by the respective recesses 35e, 35f, and the respective support surfaces 56a, 58a closely contact and abut on the upper surface of the upper housing 34. In this way, the document tray 40 is attached to the upper surface of the tray receiving stand 35.

When removing the document tray 40 from the tray receiving base 35, the procedure reverse to the above-described mounting operation may be performed. In this way, the document tray 40 can be easily replaced by the upper tray. It can be attached to and detached from the housing 34, and in the attached state, its posture can be reliably maintained in a stable state. That is, when the original tray 40 is attached to the upper housing 34, the supporting surfaces 56a and 58a are in close contact with the upper surface of the tray receiving base 35, so that the original tray 40 moves backward (that is, in the opposite direction in the drawing). Rotation (in the clockwise direction) is prohibited, and the mounting posture will be maintained. On the other hand, since the size of each of the fitting holes 35c and 35d is set so that a predetermined space is formed in front of the front surfaces 60c and 62c of the protruding boss portions 60 and 62, the document tray 40 is moved forward. Rotation (that is, along the clockwise direction in the figure) is allowed.

On the other hand, as shown in FIG. 16, when the upper housing 34 is lowered and the upper surface of the printer housing 32 is completely closed by the upper housing 34, a document tray attached to the upper housing 34 is attached. 40 and a paper feed cassette 36 attached to the print mechanism 14 fixed to the main plate 12 are arranged substantially parallel to each other. As is clear from the above description, the document tray 40 is attached to the upper housing 34, and the paper feed cassette 36 is attached to the print mechanism 14. Therefore, for example, when the print mechanism 14 is maintained, the upper housing 34 is When the swinging frame 16 is rotated upward to open it upward, the original tray 40 is also rotated integrally with the opening operation. Will remain. As a result, the rear end of the document tray 40 interferes with the upper surface of the paper feed cassette 36 and abuts against it when the document tray 40 is half opened as shown in FIG.

However, in this embodiment, as described above, since the original tray 40 is allowed to rotate in the clockwise direction in the drawing from the attached state with respect to the upper housing 34, the original tray 40 shown in FIG. With the further opening operation of the upper housing 34 from the state shown, the rear end of the document tray 40 is slid along the upper surface of the paper feed cassette 36 and is moved in the clockwise direction in the figure with respect to the upper housing 34. It will rotate. In this manner, the document tray 40 is rotated clockwise along with the opening operation of the upper housing 34, so that, for example, the rear end of the document tray 40 is the opening operation of the upper housing 34. Even if it comes into contact with the upper surface of the paper feed cassette 36 on the way, the original tray 40 may not be damaged, and the opening operation of the upper housing 34 may not be disturbed.

On the other hand, as described above, the adjustment board 46 shown in FIG. 19 is housed in the front space in the lower space of the lower housing 30. A large number of jumper terminals 64a, 64b, ... Are erected on the front edge of the adjustment board 46 facing the above-described front opening 30b. As shown in FIG. 20, each of the jumper terminals 64a, 64b ... Is composed of a pair of connection terminals 65a, 65b which are spaced apart in the state of being close to each other. Then, by electrically connecting the connection terminals 65a and 65b of the arbitrary jumper terminals 64a, 64b ... Through the connecting member 66, that is, by shorting them, the jumper terminal 64a in the corresponding circuit. , 64b ... The electrical state is defined as the “0” state. On the other hand, in a state where the connection terminals 65a, 65b of the arbitrary jumper terminals 64a, 64b ... Are not electrically connected, the electrical state of the jumper terminals 64a, 64b. Stipulated in.

On the other hand, in the adjustment board 46, as shown in FIG. 20, the predetermined jumper terminals 64a, 64b, ... It is possible to adjust and change the specifications such as DC resistance value and capacitance according to the specifications of each country to be shipped. That is, in this embodiment, as is apparent from the above description, in order to adjust and change the electrical standard according to the specifications of each country, simply remove the front blind cover 30c and open the front opening. By opening 30b, the front edge of the adjustment board 46 is made accessible, and the connecting member 66 is connected to the corresponding jumper terminals 64a, 64b according to the specifications of each country through the front opening 30b. It is possible to adjust and change the facsimile device 10 so that it becomes an electrical standard according to the specifications of the country by attaching it to.

As a result, the manufacturer of the facsimile apparatus 10 does not need to set a production line in consideration of the standards in each country of the world, and a uniform production line can be set up, and the production efficiency is extremely improved. It will be a thing. Therefore, it becomes unnecessary to manage the electrical standard of each country in the world, and it becomes unnecessary to manage the inventory of the electric parts of each country according to the number of shipped units of each country, and the productivity can be improved. become.

On the other hand, in the country to which the facsimile device 10 is supplied, the predetermined jumper terminals 64a, 64b, ... Are short-circuited by the connecting member 66 in a state conforming to the standard peculiar to the country. The attaching operation of the connecting member 66 can be performed simply by removing the front blind cover 30c. For example, it is necessary to remove the lower housing 30 and also remove the adjusting board 46 itself from the enclosure 28. Is not necessary either. In this way, this changing and adjusting operation requires only a very simple work of removing the front blind cover 30c and attaching the connecting members 66 to the predetermined jumper terminals 64a, 64b ... It is possible to achieve the effect of achieving this.

[Description of Structure of Swing Frame 16] Next, the structure of the swing frame 16 will be described in detail with reference to FIG. As shown in the drawing, the swing frame 16 extends sideways with side plates 68a and 68b arranged in parallel in a standing state, and connects the front ends of both side plates 68a and 68b to each other. A solid front connecting shaft 70 and a solid rear connecting shaft that is disposed substantially parallel to the front connecting shaft 70 and connects the rear ends of both side plates 68a and 68b to each other to function as a swing support shaft. 72, and a pair of front and rear plate-shaped mounting bases 74a and 74b arranged so as to connect the front portions of the both side plates 68a and 68b to each other. Here, the swing support shaft 72, which will be described in detail later, is rotatably supported by swing support brackets 76a and 76b that are fixed in a state of standing upright at the left and right ends of the rear portion of the main plate 12. There is.

On the other hand, locking hooks 78a and 78b are rotatably attached to the left and right ends of the front connecting shaft 70 described above in such a manner that they are integrally rotated about their longitudinal axes. .. Each of the locking hooks 78a, 78b is composed of an inclined surface whose lower end surface is inclined in a direction away from the upper surface of the main plate 12 as it goes rearward, and the rear end of the locking hooks 80a, 80b is described later. Each of them is formed so as to project backward by a predetermined amount so that they can be locked. Further, the respective locking hooks 78a, 78b are elastically biased by a torsion coil spring (not shown) so as to be rotationally displaced in the clockwise direction in the figure, and are not supported by the stopper (not shown). By abutting on each other, they are elastically held at their stop positions.

The locking hooks 78a and 78b are elastically held at the above-described stop positions, and the swing frame 16 is rotated downward from the open state, so that The inclined surface engages with the corresponding locking pin 80a, 80b attached to the main plate 12 from above, and according to the inclination, it is forced along the counterclockwise direction in the figure against the biasing force of the torsion coil spring. It is designed to rotate. On the other hand, when the swinging frame 16 is rotated further downward to further shift the locking hooks 78a, 78b counterclockwise, the locking pins 80a, The engagement with 80b is released at the rear end of each inclined surface, and at the time of this release, the biasing force of the corresponding torsion coil spring reverses the rotation bias in the clockwise direction in the figure. As a result, the upper surfaces of the locking hooks 78a, 78b enter below the corresponding locking pins 80a, 80b, and the swing frame 16 is thus locked in the closed position.

On the other hand, the respective locking hooks 78a, 78b are connected to the above-mentioned upper housing opening button 42, and by pushing this up, the respective locking hooks 78a, 78b act on the biasing force of the torsion coil spring. It is forcibly rotated counterclockwise in the figure against this, and in this way, the locked state with the corresponding locking pins 80a, 80b is forcibly released. The locking pins 80a, 80b are aligned with each other in the lateral direction to the mounting brackets 82a, 82b fixed to the left and right ends of the front portion of the upper surface of the main plate 12, and the main pins It is firmly attached and supported so as to be substantially parallel to the upper surface of the plate 12.

As described above, the swing frame 16 has a structure in which the rigidity thereof is increased in a state where the swing frame 16 has a substantially rectangular shape in a plane, and the swing frame 16 penetrates in the width direction. The rear connecting shaft 72 attached in 1 is used as a swing support shaft. As a result, the image reading mechanism 16 for reading the image of the transmission original is attached to the pair of front and rear mounts 74a and 74b. For example, the swing frame 16 is an axis line of the swing support shaft 72. Even if it is repeatedly driven to swing around, it is not twisted, and the posture in the closed state with respect to the main plate 12 can always be kept constant. In particular, as will be described later in detail, the lower surfaces of the pair of front and rear mounts 74a and 74b on which the image reading mechanism 16 is mounted are set so as to define the upper surface of the paper transport path in the print mechanism 14, and as described above. Since the distortion of the oscillating frame 16 is surely suppressed, the sheet conveying path can be satisfactorily and accurately defined with a predetermined accuracy.

On the other hand, with the opening operation of the swing frame 16, the upper housing 34 is driven to be opened. However, as is clear from the above description, when the upper housing 34 is opened, the upper housing 34 is opened. It is designed so that no rotational driving force acts on itself. As a result, it is possible to effectively prevent the upper housing 34 from being distorted due to the opening operation of the upper housing 34. Therefore, it is possible to form the upper housing 34 into a thin wall, and thus to reduce the total weight. Can be done. As shown in the drawing, the front end of the paper feed cassette 36 is introduced into a space surrounded by the swing frame 16 and located behind the pair of front and rear mounts 74a and 74b. It is set so that the space is regulated.

[Description of Swing Support Structure of Swing Frame 16] Next, the swing support structure of the swing frame 16 will be described in detail with reference to FIGS. 22 to 25. First, a mode will be described in which both ends of the rear connecting shaft 72 as a swing support shaft are rotatably supported by corresponding swing support brackets 76a and 76b, respectively. As shown in FIG. 22, the right end of the swing support shaft 72 is set to pass through the corresponding right swing support bracket 76b and terminate at the corresponding right side plate 68b. On the other hand, the left end of the swing support shaft 72 penetrates the corresponding left side swing support bracket 76a, and further projects the corresponding left side plate 68a toward the outside. The left side plate 68a has a predetermined protrusion amount from the outer surface thereof. It only ends in a protruding state. The protruding left end 72a of the swing support shaft 72 has a damper 84, which will be described later in detail, so that the upper housing 34 can be stopped at an arbitrary open position. It is installed between and.

On the other hand, as shown in FIGS. 22 and 23, the connecting bushes 86a, are attached to the left and right ends of the swing support shaft 72 (note that, at the left end, the ends except the protruding end 72a). 86b is inserted in each. The connecting bushes 86a and 86b are hollow cylindrical sleeves 86a1 and 86b1 that are directly fitted to the outer periphery of the swing support shaft 72, and outer flanges that are integrally formed at the outer ends of the sleeves 86a1 and 86b1. And 86a2 and 86b2. The sleeves 86a1 and 86b1 and the swing support shaft 72 are connected to each other by spring pins 88a and 88b, which are attached so as to penetrate the sleeves 86a1 and 86b1 in the radial direction, so as to rotate integrally with each other. Then, as shown in FIG. 25, the outer peripheral surfaces of the sleeves 86a1 and 86b1 are provided with support holes 90a and 90b formed in a state of penetrating the corresponding upright pieces of the rocking support bases 76a and 76b in the thickness direction. It is slidably supported on the inner peripheral surface.

Further, as shown in FIG. 24, a pair of flat portions 86a3 and 86b3 which are parallel to each other are formed in the portions of the sleeves 86a1 and 86b1 which are located directly outside the corresponding support holes 90a and 90b, respectively. Has been done. On the other hand, the left and right side plates 68a and 68b are set so that the portions of the sleeves 86a1 and 86b1 having such a pair of flat portions 86a3 and 86b3 are complementarily fitted respectively, and along the thickness direction. Mounting holes 92a and 92b are formed in a penetrating state. By thus fitting the portions of the sleeves 86a1 and 86b1 having the pair of flat portions 86a3 and 86b3 into the mounting holes 92a and 92b in a complementary manner, the connecting bushes 86a and 86b respectively come into contact with the corresponding left and right. It will rotate integrally with the side plates 68a and 68b.

Further, in this embodiment, in order to ensure the integral rotation of both of them, as shown in FIG. 23, the respective outer flanges 86a2, 86b2 of the connecting bushes 86a, 86b are , Are fixed to the corresponding left and right side plates 68a and 68b by spot welding, respectively. In this manner, the left and right side plates 68a, 68b are fixed to the left and right ends of the swing support shaft 72 with the connecting bushes 86a, 86b interposed, respectively, and are integrally rotated according to the rotation thereof. It becomes possible to move, that is, swing. Since the left and right side plates 68a and 68b are fixed to the swing support shaft in this manner, the swing frame 16 including the side plates 68a and 68b is not distorted and maintains a stable posture, and the swing support shaft is maintained. It will be rocked around the axis of 72. In addition, since the distortion deformation of the swing frame 16 is prevented in this manner, the occurrence of so-called squeaking in the pivotally supporting the rotatably supporting frame 16 is effectively suppressed, and as a result, with an extremely light operating force. The rocking frame 16 can be rockingly driven, and therefore the upper housing 34 attached thereto can be opened and closed. In this way, the operability of the upper housing 34 can be improved.

[Description of Mounting Structure of Damper 84] Next, referring to FIGS. 26 and 27, a mounting structure of the damper 84 for stopping the swing frame 16 having the above-described configuration at an arbitrary rotational position explain. This damper 84 protrudes leftward from the leftward projecting end 72a of the swing support shaft (rear connecting shaft) 72, that is, the left swing support base 76a, and further from the corresponding left side plate 68a to the left. It is set so as to be interposed between the main plate 12 and the end portion 72 a protruding in one direction. For this reason, a mounting stem 94 is fixed to the protruding end portion 72a of the swing support shaft 72 in a state of extending along the radial direction of the swing support shaft 72 so as to rotate integrally therewith. One support pin 94a having an extension axis parallel to the extension axis of the swing support shaft 72 is fixed to the tip of the attachment stem 94. The one support pin 94a has the above-described damper. One end of 84 is rotatably attached. On the other hand, a mounting bracket 96 is fixed to the upper surface of the main plate 12, and the other support pin 96a having an extension axis parallel to the extension axis of the one support pin 94a is fixed to the attachment bracket 96. Has been done. The other end of the damper 84 is rotatably attached to the other support pin 96a.

Here, the damper 84 is configured as a gas-filled cylinder type, and has a cylinder main body 84a on one end side and a piston extending on the other end side so as to project / retract from the cylinder main body 84a. Each has a rod 84b. That is, the tip portion of the cylinder body 84a is rotatably supported by the one support pin 94a, and the tip portion of the piston rod 84a is rotatably supported by the other support pin 96a. It is supported. As is well known, the projecting / pulling force of the piston rod 84a from the cylinder body 84a is attenuated by the gas enclosed inside, and the rotation stop position can be elastically maintained. There is.

Since the damper 84 is attached in this way, when damping the turning force of the rocking frame 16, the damping force of the rocking support shaft 72 constituting the rocking frame 16 is directly damped. It is configured to do. Therefore, the reaction force generated when damping the rotational force of the swing frame 16 does not act on the entire swing frame 16, but directly and partially on the swing support shaft 72. It will be a matter. In other words, if one end of the damper 84 is connected to the upper housing 34 attached to the swing frame 16, the reaction force generated when damping the turning force of the swing frame 16 is This acts on the upper housing 34, which may cause twisting deformation in the upper housing 34. In order to prevent this twisting deformation, the rigidity of the upper housing 34 is increased. In addition, consideration must be given to, for example, increasing the wall thickness. Therefore, the weight of the entire apparatus increases and the manufacturing cost increases, which is not preferable.

However, in this embodiment, as is apparent from the above description, the reaction force generated in the damper 84 when the turning force of the rocking frame 16 is attenuated acts on the rocking support shaft 72. In other words, it can be received by the swing support shaft 72. Here, the torsional rigidity of the swing support shaft 72 is set to be extremely high. In this way, the reaction force generated in the damper 84 is reliably received by the swing support shaft 72 and does not cause twisting deformation of the swing support shaft 72. In this way, even if the damper 84 is provided to elastically hold the rotating position of the swing frame 16, the situation in which the swing frame 16 is twisted and deformed by this is surely prevented. As a result, a good rotation stop state is achieved.

[Explanation of Opening / Closing Structure of Control Panel 20] Next, with reference to FIGS. 28 and 29, an opening / closing structure for driving the control panel 20 to open / close with respect to the swing frame 16 will be described in detail. First, as shown in FIG. 28, a swing support shaft 100 for the control panel 20 is attached to the rear end portion of the control panel 20 in a state of extending along the width direction. Through the support shaft 100, it is pivotally supported between a closed position that closes the front opening of the swing frame 16 and an open position that opens it. On the other hand, the lock shaft 102 is attached to the front end of the control panel 20 so as to be rotatable about its own central axis line in a state of extending along the width direction. Locking hooks 104a and 104b for the control panel 20 (the right locking hook 104b is not shown for convenience of illustration) are integrally attached to the left and right ends of the lock shaft 102. There is.

Similar to the locking hooks 78a and 78b for the swing frame 16 described above, the locking hooks 104a and 104b are inclined in a direction in which the lower end surface thereof moves away from the upper surface of the main plate 12 as it goes rearward. The rear end is formed so as to project rearward by a predetermined amount so that it can be simultaneously locked to the front connecting shaft 70 described above. Further, the respective locking hooks 104a and 104b are elastically biased by a torsion coil spring (not shown) so as to be rotationally displaced in the clockwise direction in the drawing, and abut on a stopper (not shown). Is elastically held at the stop position.

Each locking hook 104a (104b) is tilted by the control panel 20 being rotated downward from the open state while being elastically held in the open position described above. The surface is engaged with the front connecting shaft 70 from above, and due to the inclination thereof, it is forcibly rotated in the counterclockwise direction in the figure against the biasing force of the torsion coil spring. On the other hand, when the control panel 20 is rotated further downward and the locking hooks 104a (104b) are further rotated counterclockwise, the inclined surfaces are engaged with the front connecting shaft 70. Will be released at the rear end of each inclined surface, and at the time of this release, the biasing force of the corresponding torsion coil spring will cause it to rotate and bias in the clockwise direction in the figure contrary to the past, and as a result, The upper surface of each locking hook 104a (104b) enters below the front connecting shaft 70, and thus the control panel 20 is locked in the closed position.

On the other hand, each locking hook 104a (104b) is connected to the control panel release button 44 described above, and by pushing it up, each locking hook 104a (104b) is provided with a torsion coil spring. It is forcibly rotated counterclockwise in the drawing against the force, and in this way, the locked state of the front connecting shaft 70 is forcibly released. When the locked state is released in this way, the control panel 20 is pivotally displaced from the closed position to the open position by the urging force of a spring (not shown) wound around the swing support shaft 100, and this open position is released. It will be elastically held in place.

Thus, in this embodiment, the rocking hook 104a (104b) for locking the control panel 20 in the closed position with respect to the rocking frame 16 is the rocking target. The moving frame 16 is configured, and a front connecting shaft 70 to which locking hooks 78a and 78b for locking the swing frame 16 in the closed position with respect to the main plate 12 is attached is used. .. In this way, in this embodiment, since it is not necessary to use a member for locking the locking hook 104a (104b), the number of parts can be reduced and the cost can be reduced. Can be done.

[Description of Interlock Mechanism 106] Next, with reference to FIGS. 28 to 30, at the same time when the swing frame 16 is in the closed position with respect to the main plate 12, the control panel 20 causes the swing frame 16 to move. On the other hand, the configuration and operation of the interlock mechanism 106 for detecting that it is in the closed position will be described in detail.

First, as shown in FIG. 28, a push-on type detection switch 108 for the above-described detection operation is attached to the right lower frame 22b via an attachment stay 110. That is, the detection switch 108 is provided with an operating piece that is turned on by being pushed, and unless an external force acts on the operating piece, the detection switch 108 is projected outward by the urging force of a built-in spring, in other words, an off operation It is urged to do so. On the other hand, a final stage actuator 112 is rotatably supported around the support shaft 114 in the mounting stay 110 in a state in which the operating piece of the detection switch 108 can be pushed. Further, the final stage actuator 112 is biased by a torsion spring 116 wound around the support shaft 114 so as to be rotationally displaced in the clockwise direction in the drawing.

Incidentally, in the state shown in the drawing, that is, the control panel 20 is in the closed position, the upper front opening of the upper housing 34 attached to the swing frame 16 is closed, and the swing frame 16 is also closed. In the position where the upper opening of the printer housing 32 is closed, the detection switch 108 is rotated and displaced in the counterclockwise direction in the figure against the biasing force of the torsion spring 116 described above. It is pushed by the final stage actuator 112 and is turned on.

An intermediate stage actuator assembly 118 is arranged on the main plate 12 located immediately above the final stage actuator 112. The intermediate stage actuator assembly 118 includes a mounting plate 120 fixed on the main plate 12, a slide member 122 slidably supported by the mounting plate 120 in the vertical direction, and one side of the slide member 122. And a spring 126 for urging the push-in shaft 124 so as to always project downward. There is.

Here, the lower end of the push-in shaft 124 is taken out below the main plate 12 through a through hole (not shown) formed in the main plate 12 in a thickness direction. The final stage actuator 112 is arranged at a position where it can be pushed from above. Further, the above-described spring 124 is configured to have a larger urging force than the total urging force of the torsion spring 116 and the urging force of the spring built in the detection switch 108. As a result, when the push-in shaft 124 is pushed down as the slide member 122 descends, the final stage actuator 112 resists the biasing force of its own torsion spring 114 and the biasing force of the spring built in the detection switch 108. The operation piece of the detection switch 108 is pushed inward and turned on by the rotational displacement in the counterclockwise direction in the figure.

As will be described in detail later, the slide member 122 of the intermediate stage actuator assembly 118 is arranged in a position where it can be pushed downward by the first stage actuator assembly 128 attached to the swing frame 16. It is set up. The first-stage actuator assembly 128 is used when the upper housing 34 attached to the swing frame 16 is rotated from the open position to the closed position with the control panel 20 in the closed position, or when the upper housing is rotated. When the control panel 20 is rotated from the open position to the closed position with 34 in the closed position, the above-described slide member 122 can be engaged from above and pushed down. It is set.

As a result, if foreign matter enters between the slide member 122 and the first-stage actuator assembly 128, as the upper housing 34 is rotated to the closed position, the slide member 122 is sized by the amount of foreign matter. It will be pushed down with a longer stroke than usual. However, in this embodiment, as described above, since the push-in shaft 124 is vertically movably attached to the slide member 122 while being biased downward by the spring 126, the push-in shaft 124 is Even after the slide member 122 is further pushed downward after the final stage actuator 112 is pushed by a predetermined amount in response to pushing the slide member 122 downward, the spring 126 contracts and the push shaft 124 slides. The upper relative movement with respect to the member 122 is permitted, and the abnormal pushing amount of the slide member 122 is absorbed. In this way, in this embodiment, even if foreign matter enters between the slide member 122 and the first stage actuator assembly 128, the final stage actuator 112 is rotatably displaced by an amount larger than a predetermined amount. The damage to the detection switch 108 can be reliably prevented, and the reliability can be improved.

On the other hand, the above-mentioned first-stage actuator assembly 128 is the right side plate 68b that constitutes the swing frame 16, and is positioned immediately above the above-mentioned slide member 122 in the state where the swing frame 16 is in the closed position. The slide support member 130 and a push-in member 132 slidably attached to the slide support member 130 along the vertical direction are configured. The push-in member 132 projects downward from the lower edge of the side plate 68b, is engaged with the upper end of the slide member 122 from above, and the upper end of the lower end of the slide member 122. Is formed with an upper end that is engageable from above.

Since the first-stage actuator assembly 128 is configured in this manner, as shown in FIG. 28, the control panel 20 is in the closed position with respect to the upper housing 34, and the upper housing 34 is in the printer housing 32. On the other hand, in the closed position (completely closed state), the slide support member 132 of the first-stage actuator assembly 128 is pushed into the control panel 20 from above and pushed down. As the slide support member 132 is pushed downward, the slide member 122 of the intermediate stage actuator assembly 118, which engages with the slide support member 132 from above, is pushed downward, and this slide member 122 is pushed downward. The final stage actuator 112 that engages from above resists the combined force of the biasing force of the torsion spring 116 and the biasing force of the spring built in the detection switch 108, and causes a rotational displacement along the counterclockwise direction in the figure. It will be done.

As a result, the operation piece of the detection switch 108 is pushed and driven by being pushed by the final stage actuator 112. In this manner, the detection switch 108 is turned on, the control panel 20 is in the closed position with respect to the upper housing 34 with respect to the control system (not shown), and the upper housing 34 is with respect to the printer housing 32. It will be possible to inform that it is in the closed position.

On the other hand, when the control panel opening button 44 is pushed up from the completely closed state shown in FIG. 28, the locking hooks 104 a (104 b) for the control panel 20 are locked to the front connecting shaft 70 accordingly. The state is released, and as a result, the control panel 20 is rotated from the closed position to the open position as shown in FIG. With such opening operation of the control panel 20, as shown in the drawing, the control panel 20 for pressing the pushing member 132 of the first-stage actuator assembly 128 from above is no longer present. The biasing force of the torsion spring 116, which causes the final stage actuator 112 to rotate and rotate in the clockwise direction in the figure, is received through the intermediate stage actuator assembly 118, whereby the final stage actuator 112 is slid upward.

As a result, in the detection switch 108, the operating piece of the detection switch 108 is allowed to project outward due to the biasing force of the built-in spring, and thus the detection switch 108 is turned off. Then, at least the control system (not shown) can be informed that the control panel 20 is in the open position with respect to the upper housing 34.

Further, when the upper housing release button 42 is pushed up from the completely closed state shown in FIG. 28, the locking hooks 78a, 78b for the upper housing 34 are correspondingly pushed to the corresponding locking pins 80a, 80b. The locked state is released, and as a result, as shown in FIG. 30, the upper housing 34 is rotated from the closed position to the open position. With such opening operation of the upper housing 34, the pushing member 132 of the first stage actuator assembly 128 is separated upward from the slide member 122 of the intermediate stage actuator assembly 118 as shown in the figure. In other words, since the pushing member 132 that holds the slide member 122 from above is no longer present, the slide member 122 causes the final stage actuator 112 to rotate and shift in the clockwise direction in the drawing. By directly receiving the biasing force of the torsion spring 116, it is slid upward.

As a result, in the detection switch 108, the operating piece of the detection switch 108 is allowed to project outward due to the biasing force of the spring incorporated therein, and thus the detection switch 108 is turned off. Then, at least the control system (not shown) can be informed that the upper housing 34 is at the open position with respect to the printer housing 32.

As described above, since the interlock mechanism 106 in this embodiment is configured, the complete closed state shown in FIG. 28 is achieved, so that the detection switch 108 is turned on for the first time. The operation state of the facsimile apparatus 10 is regulated, and the print unit 14 and the image reading mechanism 18 provided inside are driven. On the other hand, when the control panel 20 is opened from such a completely closed state, the image reading mechanism 18 is exposed, and when the upper housing 34 is opened, the print unit 14 is exposed. In this embodiment, in these exposure states, in any case, the detection switch 108 of the interlock mechanism 106 is turned off immediately, so that the respective drive system and the laser scanning unit 24 are turned off immediately. As a result, it is possible to ensure the safety of the operator and ensure the maintenance of the internal mechanism.

Needless to say, the present invention is not limited to the configuration of the above-described embodiment and can be variously modified without departing from the scope of the present invention. For example, in the above-described one embodiment, the case where the electrophotographic apparatus according to the present invention is applied to the facsimile apparatus has been described, but the present invention is not limited to such an application and has no communication function. It goes without saying that it can be applied to a so-called printer device.

[0071]

[Effect of the device]

 As described in detail above, the electrophotographic apparatus according to the present invention has a main plate, a lower housing attached below the main plate, and an upper opening provided above the main plate. A middle housing, an oscillating frame rotatably supported at one end of the upper surface of the main plate, and an arm attached to the oscillating frame to openably close an upper surface opening of the middle housing. The swing frame includes side plates that define both sides, a base end side connecting shaft that connects and fixes the base end parts of the both side plates on the pivotal support side to each other, and tip parts of both side plates. And a base end side connecting shaft for connecting the base plates to each other, and the base end side connecting shaft is rotatably supported with respect to the main plate.

Further, in the electrophotographic apparatus according to the present invention, the swing frame is pivotally supported at a rear end portion thereof on a rear end portion of an upper surface of the main plate, and the base end side connecting shaft is rear end portion. And the distal end side connecting shaft is disposed on the front end side.

In the electrophotographic apparatus according to the present invention, both ends of the base end side connecting shaft are rotatably supported by a pair of mounting brackets fixed to the upper surface of the main plate. It is characterized by things.

In addition, in the electrophotographic apparatus according to the present invention, connecting bushes each having an outer peripheral surface having a circular cross section are externally fitted to both ends of the base end side connecting shaft, and the outer peripheral surface of each connecting bush is The proximal end side connecting shaft is rotatably supported by sliding on the inner peripheral surface of the circular hole formed in the corresponding mounting bracket.

Further, in the electrophotographic apparatus according to the present invention, the mounting bracket includes a sleeve having a circular cross section and an outer flange integrally formed at an outer end of the sleeve. It is characterized in that the outer flange is slidably inserted through the corresponding side plate into the circular hole of the corresponding mounting bracket, and the outer flange is fixed to the outer surface of the corresponding side plate.

Therefore, according to the present invention, it is possible to provide the electrophotographic apparatus capable of reliably preventing the deformation of the upper housing even if the opening / closing operation is repeated.

[Brief description of drawings]

FIG. 1 is a side view schematically showing an internal configuration of a facsimile machine to which an embodiment of an electrophotographic apparatus according to the present invention is applied.

FIG. 2 is a perspective view showing the external appearance of the configuration of the facsimile apparatus shown in FIG. 1 when viewed obliquely from the front.

FIG. 3 is a perspective view showing the external appearance of the configuration of the facsimile apparatus shown in FIG. 1 when viewed obliquely from the rear.

FIG. 4 is a bottom view showing the bottom shape of the facsimile apparatus shown in FIG. 1 with a bottom blind cover removed.

5 is a bottom view showing a bottom surface shape of a main plate forming the facsimile apparatus shown in FIG. 1. FIG.

6 is a rear view showing the shape of the rear surface of the main plate shown in FIG.

7 is a perspective view showing the facsimile apparatus shown in FIG. 2 with an upper housing opened.

8 is a side view showing a side shape of the facsimile device shown in FIG.

9 is a front view showing the front shape of the facsimile apparatus shown in FIG.

10 is a perspective view showing a state in which a document tray provided in the facsimile apparatus shown in FIG. 1 is taken out.

FIG. 11 is a perspective view showing the original tray shown in FIG. 10 and a tray pedestal attached to the upper housing in a state in which they are separated from each other in order to explain the attachment state.

FIG. 12 is a side sectional view showing the document tray shown in FIG. 11 attached to a tray holder.

FIG. 13 is a side sectional view showing the document tray shown in FIG. 11 in an upright state immediately before being attached to a tray holder.

FIG. 14 is a side cross-sectional view showing a state in which an upright document tray is inserted into the insertion hole of the tray pedestal from the state shown in FIG. 13 from above.

FIG. 15 is a side sectional view showing a state immediately after the operation of inclining the document tray with respect to the tray cradle is started from the state shown in FIG. 14;

16 is a side view showing the facsimile apparatus shown in FIG. 2 in a completely closed state.

FIG. 17 is a side view showing the facsimile apparatus in a state where the upper frame is half opened from the state shown in FIG. 16;

FIG. 18 is a side view showing the facsimile apparatus with the upper frame fully opened from the state shown in FIG. 17;

FIG. 19 is a plan view showing an upper surface shape of an adjustment substrate provided in the facsimile apparatus shown in FIG.

20 is a front view showing a state immediately before the connecting member is attached to the jumper terminal on the adjustment board shown in FIG. 19;

21 is a perspective view showing a frame structure of the facsimile apparatus shown in FIG.

22 is a plan view showing an axially supported state of the swing frame shown in FIG. 21 with respect to a main plate. FIG.

23 is a side view showing a state in which the swing frame shown in FIG. 22 is axially supported by the main plate. FIG.

FIG. 24 is a cross-sectional view showing a state in which the swing frame is axially supported by the main plate, taken along a line AA in FIG. 22.

FIG. 25 is a cross-sectional view showing a state in which the swing frame is axially supported by the main plate, taken along the line BB in FIG. 22.

FIG. 26 is a plan view showing how the damper is attached to the swing frame.

27 is a side view showing how the damper is attached to the swing frame shown in FIG. 21. FIG.

28 is a side sectional view showing the internal structure of the facsimile apparatus shown in FIG. 1, in particular, the configuration around the interlock mechanism in a completely closed state.

29 is an internal structure of the facsimile apparatus shown in FIG. 28, in which the structure around the interlock mechanism is taken out,
It is a side sectional view shown in the state where only a control panel was opened.

30 is an internal structure of the facsimile apparatus shown in FIG. 28, in which the structure around the interlock mechanism is taken out,
It is a side sectional view shown in the state where the upper housing was opened.

[Explanation of symbols]

 10 Facsimile device 12 Main plate 16 Swing frame 30 Lower housing 32 Middle housing (printer housing) 34 Upper housing 68a; 68b Side plate 70 Rear connecting shaft (base end side connecting shaft) 72 Front connecting shaft (tip side connecting shaft)

Claims (5)

[Scope of utility model registration request] 1. A main plate, a lower housing mounted below the main plate, a middle housing mounted above the main plate and having an opening on the upper surface, and a pivoting mechanism at one end of the upper surface of the main plate. The swing frame includes a swing frame that is freely rotatably supported, and an upper housing that is attached to the swing frame and closes an upper surface opening of the middle housing so as to open the swing frame. And a base end side connecting shaft that connects / fixes the base end parts on both sides of the shaft support side to each other, and a tip end side connecting shaft that connects the end parts of the both side plates to each other. An electrophotographic apparatus, wherein a connecting shaft is rotatably supported by the main plate. 2. The swing frame is pivotally supported at a rear end portion thereof on a rear end portion of an upper surface of the main plate, the proximal end side connecting shaft is disposed on a rear end side, and the distal end portion side is provided. The electrophotographic apparatus according to claim 1, wherein the connecting shaft is disposed on the front end side. 3. The pair of mounting brackets fixed to the upper surface of the main plate are rotatably supported at both ends of the base end side connecting shaft. Electrophotographic device. 4. The both ends of the base end side connecting shaft are
The connecting bushes each having a circular outer peripheral surface are externally fitted, and the base end portion is slid through the outer peripheral surface of each connecting bush and the inner peripheral surface of the circular hole formed in the corresponding mounting bracket. The electrophotographic apparatus according to claim 3, wherein the side connecting shaft is rotatably supported. 5. The mounting bracket includes a sleeve having a circular cross section and an outer flange integrally formed at an outer end of the sleeve, the sleeve penetrating a corresponding side plate to accommodate the sleeve. The electrophotographic apparatus according to claim 4, wherein the outer flange is slidably inserted into the circular hole of the mounting bracket, and the outer flange is fixed to an outer surface of a corresponding side plate.