JP3986259B2 - Electronics - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention makes it possible to insert / remove an extended electronic circuit board prepared for function expansion, such as an image forming apparatus such as a copy, a printer, a facsimile, or a complex machine thereof, or a computer, a game machine, etc. related to electronic devices.
[0002]
[Prior art]
In recent years, in some electronic devices, an extended electronic circuit board can be freely inserted into and removed from the device body, and can be attached to and detached from a main control circuit board equipped with an IC, thereby exhibiting various optional functions. There is something like that.
[0003]
For example, when adding a facsimile function to an electrophotographic digital copier, for example, as shown in FIG. 6, the rear cover 2 and the left cover 3 of the device main body 1 are opened, and image processing is first performed in the device main body 1. First extension electronic circuit board a to which data compression / reproduction and communication control functions are added is fixed. Next, the second extension electronic circuit board b to which functions such as closing, holding and opening of a DC circuit of a telephone line, and generation of a dial pulse signal are fixed, and then a speaker c to which a monitoring function at the time of transmission is added. Was fixed.
[0004]
Then, the main control circuit board d and the first extension electronic circuit board a are connected by the electric wire 4, the first extension electronic circuit board a and the second extension electronic circuit board b are connected by the electric wire 5, and The first extended electronic circuit board a and the speaker c are connected by the electric wire 6. Next, after the rear cover 2 and the left cover 3 were closed, the telephone set 7 and the public line 8 were connected to the second extended electronic circuit board b.
[0005]
However, in such a conventional electronic device, when the extension electronic circuit boards a and b and the speaker c are attached or removed, the rear cover 2 or the left cover 3 must be opened, and the individual extension electronic circuit boards are used. There is a trouble that a / b and the speaker c must be individually attached to and removed from a predetermined position in the apparatus main body 1.
[0006]
Among conventional electronic devices, as described in, for example, Japanese Patent Application Laid-Open No. 2000-216568, when inserting / removing the device main body, the extended electronic circuit board is guided by a guide in the device main body. There are also things.
[0007]
[Problems to be solved by the invention]
However, in such a conventional electronic device, since the extended electronic circuit board is handled as a single unit, in addition, a problem that stress is applied to the extended electronic circuit board when receiving an impact during transportation or when inserting / removing the main body of the device. was there.
[0008]
SUMMARY OF THE INVENTION Accordingly, a first object of the present invention is to protect an extended electronic circuit board from stress applied when it is subjected to an impact during transportation or when it is inserted into and removed from an apparatus main body in an electronic apparatus in which the extended electronic circuit board is removable. It is in.
[0009]
In addition, the second problem of the present invention is that it eliminates the trouble of opening a plurality of covers of the device body when attaching or detaching the extension electronic circuit board, and the trouble of attaching or removing each of the extension electronic circuit boards individually. It is to improve the maintainability.
[0010]
In addition, the third object of the present invention is to accurately guide the extended electronic circuit board and to reliably position and fix it within the device main body to prevent breakage.
[0011]
In addition, the fourth object of the present invention is to improve the reliability of the earth.
[0012]
A fifth object of the present invention is to provide an extended electronic circuit board mounting method for an electronic device that protects the extended electronic circuit board from an impact during transportation and stress applied during insertion / removal of the device main body.
[0013]
The sixth object of the present invention is to accurately guide the extended electronic circuit board when inserting / removing it from the apparatus main body, to eliminate stress applied to the extended electronic circuit board, and to securely fix the position within the apparatus main body after the apparatus main body is attached. Another object of the present invention is to provide an extended electronic circuit board mounting method for an electronic device that prevents damage.
[0014]
[Means for Solving the Problems]
Electronic Therefore, the invention according to claim 1, in which in order to solve the first problem described above, mounting the extended electronic circuit board to the metal plate, comprising attached detachably to the metal plate in the electronic device body In the equipment,
While forming a hook on the plate surface of the metal plate,
The electronic device body is equipped with a bracket and a frame,
When a metal plate is attached by inserting it into the electronic device main body by fitting a hook to the guide formed on the plate surface of the bracket and guiding it with the guide, the plate surface of the metal plate and the bracket face each other. Provided,
Between the opposing plate surfaces, while pressing the metal plate attached in the electronic device body, provided a biasing member to ground the extended electronic circuit board,
The metal plate is fixed by screwing to the frame on the opposite side of the metal plate across the bracket .
[0015]
The invention described in claim 2 is characterized in that, in order to solve the second problem described above, in the electronic device according to claim 1 , an extended electronic circuit board is attached to each of the front and back surfaces of the metal plate. To do.
[0016]
According to a third aspect of the present invention, in the electronic device according to the first or second aspect, one end of the bracket is attached to the bottom plate of the main body of the electronic device, and the other end is a free end .
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic internal configuration of an electrophotographic digital copier according to the present invention.
[0021]
Reference numeral 100 in the figure denotes a copying apparatus main body. The apparatus main body 100 has a scanner device 200 mounted thereon and is placed on a paper feeding device 300.
[0022]
A process cartridge 10 is provided in the apparatus main body 100. In the process cartridge 10, a drum-shaped image carrier 12 is provided in a cartridge case 11, and a charging device 13, a developing device 14, and a cleaning device 15 are provided around the drum-shaped image carrier 12. The charging device 13 is in the form of a roller and is provided in contact with the image carrier 12. The developing device 14 includes a developing roller 16 and the like, and the cleaning device 15 includes a cleaning blade 17 and the like.
[0023]
A roller-like transfer device 18 is brought into contact with the image carrier 12 of such a process cartridge 10. A position where the image carrier 12 and the transfer device 18 come into contact is set as a transfer position, and a sheet conveyance path p is provided that extends from the lower side to the upper side through the transfer position.
[0024]
The sheet conveyance path p includes a registration roller pair 19 before the transfer position. At the end of the transfer position, a fixing device 20 and a paper discharge roller pair 21 are provided. An in-body discharge unit 22 for stacking copied sheets is provided between the apparatus main body 100 and the scanner device 200 at the end of the discharge roller pair 21. The fixing device 20 includes a fixing roller 24 and a pressure roller 25.
[0025]
The apparatus main body 100 further includes a laser exposure device 26, a toner bottle 27 for supplying toner to the developing device 13 of the process cartridge 10, a PSU (power supply unit) 28, and a paper feed cassette 29. The paper feed cassette 29 can be taken in and out from the front side at the bottom, and the stacked sheets s set thereon can be separated and fed out by the paper feed roller 30 one by one.
[0026]
Further, on the right side of the apparatus main body 100, a manual paper feed tray 32 is provided that can be opened and closed, and a paper feed roller 33 that separates and feeds the stacked sheets s set on the manual paper feed tray 32 one by one.
[0027]
The scanner device 200 includes a light source 36, a plurality of mirrors 37, an imaging lens 38, an image sensor 39 such as a CCD, and the like below the contact glass 35. Then, the light source 36 is moved along the contact glass 35, the light from the light source 36 is reflected by the original surface on the contact glass 35, the reflected light is reflected by the mirror 37 and imaged by the imaging lens 38, Read by image sensor 39.
[0028]
The sheet feeding device 300 includes a sheet feeding cassette 42 that can be inserted and removed from the front side, and a sheet feeding roller 43 that separates and feeds stacked sheets s set on the sheet feeding cassette 42 one by one.
[0029]
Now, when making a copy using this laser copy, an original is set on the contact glass 35, pressed by the pressure plate 45, and a start switch (not shown) is pressed. Then, the scanner device 200 is driven to read the image on the document set on the contact glass 35.
[0030]
At the same time, one of the paper feed rollers 30, 43, and 33 is rotated to feed the sheet s from the paper feed cassettes 29 and 42 or the manual paper feed tray 32, and abut against the registration roller 19 through the sheet conveyance path p and stop. .
[0031]
Further, the image carrier 12 is rotationally driven, and the charging device 13 uniformly charges the surface as the image carrier 12 rotates. Next, based on the signal from the scanner device 200, writing is performed by irradiating a laser beam with the laser exposure device 26 according to the read content, thereby forming an electrostatic latent image on the image carrier 12. Subsequently, the developing roller 16 of the developing device 14 attaches toner, develops the electrostatic latent image, and forms a toner image on the image carrier 12.
[0032]
Then, the registration roller 19 is rotated in synchronization with the rotation of the image carrier 12, and the sheet s is first transported from the lower side to the upper side in the apparatus main body 100 to be transferred to the transfer position, and formed on the image carrier 12. The transferred toner image is transferred to the sheet s by the transfer device 18.
[0033]
The sheet s after the image transfer is put into the fixing device 20, and heat and pressure are applied by the fixing roller 24 and the pressure roller 25 to fix the transferred image. Then, the sheet discharge rollers 21 discharge the sheet s to the outside of the apparatus main body 100 and stack the copied sheets s on the in-body discharge unit 22.
[0034]
On the other hand, the image carrier 12 after image transfer is scraped off and removed by the cleaning blade 17 of the cleaning device 15 as the residual toner on the surface is rotated. Thereafter, the charge is removed by a charge removal device (not shown) to prepare for a second image formation starting from charging.
[0035]
By the way, when the facsimile function is added to the digital copying machine, for example, as shown in FIG. 2, the FAX expansion kit 50 is removably attached to the apparatus main body 100.
[0036]
In order to make the FAX expansion kit 50 detachable, a power holding bracket 47 is erected in the apparatus main body 100 by screwing onto the bottom plate 46. As shown in FIG. 1, the power holding bracket 47 is attached with the PSU 28 described above on the front side, and on the back side, as shown in FIG. 2, two L-shaped rail-shaped guides 48 cut and raised and bent inward. Are formed in parallel by extending back and forth.
[0037]
On the other hand, as shown in FIGS. 3 and 4, the FAX expansion kit 50 attaches the first expansion electronic circuit board 53 and the speaker 54 to one surface of one large metal plate 52. In the illustrated example, the first extended electronic circuit board 53 is a facsimile control board to which image processing, data compression / reproduction, and communication control functions are added. The speaker 54 adds a monitor function during transmission.
[0038]
A second extended electronic circuit board 55 and three ground leaf springs 56 are attached to the other surface of the metal plate 52. In the illustrated example, the second extension electronic circuit board 55 is a network control board to which functions such as closing, holding, opening of a telephone line DC circuit and generation of a dial pulse signal are added. A connector 57 is attached. A guard plate 58 is attached to one side of the metal plate 52 so as to protect the modular jack connector 57.
[0039]
Further, the three ground leaf springs 56 are formed in a slender shape by providing a curved portion 59 at the tip, and are arranged in parallel with each other on the upper, middle, and lower stages of the metal plate 52 along the metal plate 52, and the base end portions are arranged. Secure with screws. Between these leaf springs 56, a part of the metal plate 52 is cut and raised and bent outward to form two L-shaped rail-like hooks 60 in parallel.
[0040]
Then, the first extension electronic circuit board 53 and the second extension electronic circuit board 55 are electrically connected to each other, and the first extension electronic circuit board 53 and the speaker 54 are electrically connected to each other by using electric wires (not shown). Furthermore, the first extended electronic circuit board 53, the speaker 54, and the second extended electronic circuit board 55 are each connected to the metal plate 52 with ground.
[0041]
Thereafter, as shown in FIG. 2, the hook 60 is fitted to the guide 48, guided by the guide 48, the FAX expansion kit 50 is inserted into the device main body 100, and the guard plate 58 is pushed into the frame 62 of the device main body 100. Hit it.
[0042]
Then, the first extension electronic circuit board 53 is electrically connected to a main control circuit board (not shown) in the device main body 100 using an electric wire (not shown), and then the guard plate 58 of the FAX extension kit 50 is attached to the frame. It is fixed to 62 using two mounting screws 63. Note that the first extension electronic circuit board 53 and the main control circuit board may be directly connected by inserting a FAX extension kit 50 with connectors attached to each other board.
[0043]
At this time, as shown in FIG. 5, the three ground leaf springs 56 have their curved portions 59 pressed against the power holding bracket 47 and press the FAX expansion kit 50 with an urging force. Further, by contacting the power holding bracket 47, the metal plate 50 is reliably grounded via the ground plate spring 56.
[0044]
Then, a rear cover (not shown) is attached to the apparatus main body 100, and a telephone and a public line are connected to the modular jack connector 57.
[0045]
In the above-described example, the ground leaf spring 56 is attached to the metal plate 52, but it may be attached to, for example, the power supply holding bracket 47 on the apparatus main body 100 side.
[0046]
【The invention's effect】
As described above, according to the first aspect of the present invention, the extended electronic circuit board is attached to the metal plate, and the metal plate is detachably attached to the electronic device main body. In an electronic device, the extended electronic circuit board can be protected from stress applied when it is subjected to an impact during transportation or when it is inserted into or removed from the device body.
[0047]
According to the invention according to claim 2, since the extension electronic circuit board is attached to the front and back surfaces of the metal plate , in addition to the effect of the invention according to claim 1 described above, when the extension electronic circuit board is attached or detached, This eliminates the hassle of opening a plurality of covers, and eliminates the hassle of individually attaching and detaching each extended electronic circuit board, thereby improving maintainability.
[0048]
In addition , according to the invention according to claim 1 , while providing a guide for guiding the metal plate in the electronic device body when inserting and removing, the biasing member for pressing the metal plate attached in the electronic device body, Since it is provided on the metal plate or the device main body side, in addition, the extended electronic circuit board can be guided accurately and positioned and fixed within the device main body to prevent damage.
[0049]
Furthermore, according to the invention which concerns on Claim 1 , since an extended electronic circuit board is earth | grounded via a biasing member from a metal plate, in addition, the reliability of earthing | grounding can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic internal configuration diagram of an electrophotographic digital copier according to the present invention.
FIG. 2 is a perspective view showing attachment of a FAX expansion kit to the copying machine main body.
FIG. 3 is a plan view of the FAX expansion kit.
FIG. 4 is a front view thereof.
FIG. 5 is an explanatory diagram of the attachment state.
FIG. 6 is an explanatory view of a state of attachment of a conventional extended electronic circuit board.
[Explanation of symbols]
100 Copy machine body (electronic device body)
200 Scanner Device 300 Paper Feed Device 47 Power Holding Bracket 48 Guide 50 FAX Expansion Kit 52 Metal Plate 53 First Extended Electronic Circuit Board 54 Speaker 55 Second Extended Electronic Circuit Board 56 Ground Leaf Spring (Biasing Member)
57 Modular jack connector 58 Guard plate 60 Hook 62 Frame 63 Mounting screw

Claims (3)

In an electronic device in which an extended electronic circuit board is attached to a metal plate, and the metal plate is detachably attached to the electronic device body ,
While forming a hook on the plate surface of the metal plate,
The electronic device body includes a bracket and a frame,
When the metal plate is inserted into the electronic device main body by fitting the hook to a guide formed on the plate surface of the bracket and guiding with the guide, the metal plate and the bracket of each other plate are attached. Face to face,
Between the opposing plate surfaces, while pressing the metal plate attached in the electronic device body, provided a biasing member for grounding the extended electronic circuit board,
An electronic apparatus, wherein the metal plate is fixed by screwing to the frame on the opposite side of the metal plate with the bracket interposed therebetween . The electronic device according to claim 1 , wherein the extended electronic circuit board is attached to each of the front and back surfaces of the metal plate.   The electronic device according to claim 1, wherein one end of the bracket is attached to a bottom plate of the electronic device main body, and the other end is a free end.

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