JPH0470250A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent the intrusion of a foreign matter from the hole part of a reception part to a board by providing a control circuit board at the bottom of a device mainbody in a read part-side, setting a bottom cover which can open and close the bottom part of the mainbody to be the supporting member of the board and forming the bottom cover to the position of a recording roll paper reception part in a recording part. CONSTITUTION:A partition 28 which is different in accordance with the size of a paper width is provided for the roll paper reception part 27 and hook holes 27a and 27b of pawls 28 a and 28b in the partition 28 are provided. Ribs 27c and 27d are provided at the lower part of the roll paper reception part 27 so that they surround the holes 27a and 27b. The bottom cover 11 is laid at the lower part of the roll paper reception part and the inner surface of the bottom cover 11 abuts on the ribs 27c and 27d at the time of closing the bottom cover 11. Thus, the hook holes 27a and 27b of the roll paper reception part 27 are separated from the control circuit board 14 and the intrusion of dust from the hook holes 27a and 27b into the control circuit board 34 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine in which a control circuit board is disposed at the bottom of the main body of the machine.

[Conventional technology]

In recent years, facsimile machines have been rapidly spreading around the world, so it is necessary to be able to easily support each country's power supplies of 100V, 120V, 230V, etc., as well as various public lines. Additionally, since they are produced locally in various parts of the world, there is a need for molding and molding of parts that can be done easily anywhere.

Furthermore, there is a demand for a structure that can be easily maintained.

As shown in FIG. 7, the conventional facsimile has a main body frame 31 which is covered with a plurality of upper and lower covers 32 and 33 molded above and below. To assemble such a facsimile, the bottom cover 33
Control circuit board (comprising a system control unit and a network control unit) 34
After the main body frame 31 is installed, each unit and electronic components are assembled on top of the main body frame 31. During this assembly, input/output terminals 35 for circuits etc. are connected to the bottom cover 33.
It is installed on the back side (left side) of the Finally, attaching the upper cover 32 and the like completes the assembly.

[Problem that the invention is trying to solve]

The main body frame 31 is provided with a roll paper receiving section 37.
Hook hole 37 for the hook on the partition plate that varies depending on the paper width size
a, 37b are provided, and these holes 37a, 3
Foreign objects such as clicks and bottles may fall onto the control circuit board 34 through 7b and cause a short circuit. It was preventing it from falling.

Furthermore, facsimile machines need to check the control circuit board 34 for repairing defects during assembly or for maintenance in the market, but in conventional facsimile machines, the upper cover 34 needs to be checked.
2, the main body frame 31 in which each unit and electronic parts are installed must be rotated in the R direction about the shaft 36 to check the control circuit board 34, which is very time-consuming. It cost a lot of money. Furthermore, when changing specifications, it was necessary to disassemble and reassemble the device once installed.

In order to solve this problem, recently some facsimile machines have a bottom cover 37 that can be opened and closed as shown in FIGS. 8 and 9.

Even if you do this, the hook hole 37a of the roll paper receiver
, 37b and onto the control circuit board 34, causing a risk of short-circuiting, and a net or the like is still required to prevent this.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks, and to provide a facsimile machine that prevents foreign objects from falling onto a control circuit board.

[Means to solve the problem]

In order to achieve this object, according to the present invention, a recording section is provided at one end of the device body, a reading section is provided at the other end, and a control circuit board is provided at the bottom of the device main body on the reading section side. A bottom cover that allows the bottom of the device main body to be opened and closed is used as a support member for the control circuit board, and the bottom cover is formed up to the position of the recording roll paper holder of the recording unit, and the bottom cover and the The recording roll paper holder is configured to form a part to prevent foreign matter from entering the control circuit board through the hole in the recording roll paper holder.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the structure of the entire apparatus. In the figure, 1 is a document, and 2 is a document conveying section, the lower part of which forms a unit during assembly as shown by the dotted line in the figure. 3 is the optical system reading section,
As shown by the dotted line in the figure, a unit is formed when assembled. 4
5 is a thermal recording paper, 5 is a printing section, and 6 is a recording paper cutting section, forming a unit when assembled as shown by the dotted line in the figure. Reference numeral 7 denotes a discharged paper stack section, 8 a recording paper curl removal section, and 9 an operation panel section, which together with the upper part of the document transport section 2 form a unit when assembled as shown by the dotted line in the figure. 10 is the main body frame, 11 is the main body frame 10 with screws lla and llb.
12 is an upper cover, and 13 is a recording cover, which together with the printing section 5 form a unit when assembled as shown by the dotted line in the figure. 14 is a control circuit board;
It is isolated from other units and electronic components by the main body frame IO, and is placed at the bottom of the apparatus main body. This control circuit board 14 is attached to the bottom cover 11 and is screwed
It can be repaired by removing parts a and llb and opening the bottom cover 11 as shown in FIG.

5 is a power supply unit, 16 is a connection cord, 17a,
Reference numeral 17b denotes a hole drilled in the main body frame, the power supply unit 15 is connected to the control circuit board 14 through the hole 17a with a connection cord 16, and the printing section 5 is connected to the hole 17b with the connection cord 16. It is connected to the control circuit board 14 via. 18 is a paper discharge tray. 19 is bottom cover 1
1 is a speaker attached, and 20 is a shield plate. Reference numeral 27 denotes a roll paper receiving part, and this roll paper receiving part 27 is provided with a partition plate 28 that differs depending on the paper width size, and hook holes 27a for claws 28a and 28b of this partition plate 28,
27b is provided. Ribs 27c are provided below the roll paper receiving portion 27 so as to surround the hook holes 27a and 27b.
27d is provided. Further, a bottom cover 11 extends below the roll paper receiving portion, and when the bottom cover 11 is closed, the inner surface of the bottom cover 11 and the ribs 27c and 27d come into contact with each other. As a result, the roll paper holder can be attached to the hook hole 27a of the portion 27,
27b and the control circuit board 14 are isolated from each other, and dirt is prevented from entering the control circuit board 34 through the hook hole 27a127b.

Here, FIGS. 2 and 3 show a side view of the device shown in FIG. 1. Reference numeral 22 denotes a side wall molded separately from the main frame lO, and on both sides of this side wall 22 are substrates 14, respectively.
cutouts 22a, 22b for positioning the modular cover 23, 24 fixed with screws 23a, 24a.
The modular one terminal 21a in the cover 23 is
21c is soldered to the board 14. 21a is a line input of a general communication network, 21b is a telephone line to a handset attached to the facsimile, and 21c is a slave telephone terminal for connecting a slave telephone located away from the facsimile main body. Further, a modular terminal 21d inside the cover 24 shown in FIG. 4 is also soldered to the board 14.

The side wall 22 has a cover 23 as shown in FIGS. 4 and 5.
．． The portions other than the notches 22a, 22b for the grooves 22, .
22, b, and groove portions 22□3.22□ that fit with the protruding pieces 23b, 24b of the cover 23.24,
is also formed. The side wall 22 is connected to the main body frame 10 with screws 223, 224. and bottom cover 11
is constructed as shown in FIG. 6, 25 is a memory backup battery of the device, 25a is a signal line, and 19a is a signal line for the speaker 19.

In this way, the side wall 22 is provided as a separate member to the main body frame 10, the space for the board 14 attached to the bottom cover 11 is determined by the side wall 22, and the bottom cover 11 is attached to the main body frame 10. The mounting is such that the space can be maximized and the bottom cover 11 can be mounted reliably. Further, notches 22a and 22b are provided in the side wall 22, and the notches 22a and 22b are provided in the side wall 22.
A modular cover 23.24 having modular terminals 21a to 21d is positioned on a and 22b, and the modular terminals 21a to 21d and the modular cover 23.24
Since it is attached to the board 14, the number of signal lines can be reduced, and at the same time, conversion parts for destination change can be integrated with the bottom cover 11 to form a unit. Moreover, the area around the notches 22a and 22b is a modular cover 2.
3.24, the side wall 22, and the main body frame lO have a strong structure, and the strength is sufficiently compensated by the formation of the notches 22a and 22b.

Here, we will discuss the document feeding system.

The document 1 stacked on the upper surface of the recording cover 13 is separated by the pressing piece 2.
The sheets are separated one by one by the preliminary conveyance roller 2c in pressure contact with a and the separation roller 2d in pressure contact with the separation friction piece 2b, and further by the paper feed roller 2g in pressure contact with the pressure roller 2e and the paper discharge roller 2h in pressure contact with the pressure roller 2f. The paper is conveyed and stacked on the paper discharge tray 18. 21 is a lower document table, and 2j is a lower document table.

Next, we will discuss the manuscript reading system.

Further, the lower surface of the transported original l is irradiated with a light source 3b, for example, an LED array, through the original glass 3a, and the reflected light is caused to reach a photoelectric conversion element 3g such as a CCD via a lens 3f by mirrors 3c, 3d, and 3e. There is. The image is recorded by its own recording section 5 when in copy mode, and transmitted to the recording section of another machine when in facsimile mode (transmission mode).

Let's talk about the recording system.

The thermal recording paper 4 is a roll paper that is stored in a roll receiving portion of the frame 10 in a drop-down manner. 4a is roll full state, 4
b indicates a roll empty state. After the roll paper 4 is decurled by the curl removal section 8, it is conveyed in the paper discharge direction by a platen roller 5a driven by a motor (not shown). At this time, the configuration is such that each Idot is printed on the recording paper 4 by a heat-sensitive head (thermal head) 5b that is pressed against the platen roller 5a. The printed recording paper passes between the fixed blade 6a and the rotary movable blade 6b of the cutter section, and is separated from the inner tray 7a and the outer tray 7 as shown by the two-dot chain line.
It is structured so that it enters the part of the reversing tray consisting of b from the beginning. The recording sheets that are sequentially fed in by the platen roller are ejected with their leading ends inserted into a part of the reversing tray in a loop to the outside of the apparatus, and each time a sheet is received, the movable blade 6b rotates upward in the figure to cut it. The tip is held in place while the rear end is ejected to the outside of the device.

The curl removing section 8 will be described.

8a is a moving kite shaft, and 8b is a fixed shaft (fixed to the recording cover 13 side). 8C is the rotation center axis of the guide shaft. Depending on the remaining winding diameter of the roll paper 4, the moving guide shaft 8a is moved to the position 8a in the figure when the roll paper is as thin as the core diameter by a mechanical system (not shown), and to the position 8d in the figure when it is in a full state.
, and changes the amount of winding of the roll paper around the fixed shaft 8b.

The degree of curl removal is varied by the difference in the amount of wrapping, so that a constant level of flatness is always given to the discharged roll paper.

Further, 9 is an operation panel section, 9a is a display such as an LCD,
9b is the operation panel control board 0PCNT (operation white control board), 9C is the key top, 9d is 0P
This is a tact switch on CNT.

Next, the case of assembling the facsimile machine configured as described above will be explained.

First, the injection molded main body frame IO is attached to the side wall 22. At this time, the groove portion 22 of the side wall 22,
．． 22, , so that the end of the main body frame 10 is inserted into the side wall 22, and screw the main body frame 10 into the side wall 22.
3. Conclude at 224. After that, each unit is dropped into the main body frame 10 using an automatic assembly machine and assembled. That is, first, the unit equipped with the recording paper cutting section 6 is assembled and attached. Next, the unit equipped with the optical system reading section 3 is assembled. Then, the power supply unit 15 is assembled and attached to the storage section of the main body frame 10.

Further, a unit including a recording cover 13 and a printing section 5 is assembled and attached to the main body frame 10.

Further, a unit including the lower part of the document conveyance section 2 is assembled and attached to the main body frame 10.

Finally, a unit including the upper side of the document transport section 2 and the operation panel section 9 is assembled and attached to the main body frame IO.

This completes the automatic assembly by dropping each unit, but after this, other parts are assembled on the main body frame]0. During the assembly of other parts, the bottom cover 1 with the control circuit board 14
1 will be installed. At this time, after hooking the claw at the tip of the bottom cover 11 into the groove of the main body frame 10, the modular cover 23 is inserted into the groove 222a1222b of the side wall 22.
．． Fit the bottom cover 11 so that the protruding pieces 23b124b of 24 are inserted, and screw the bottom cover 11 onto the main body frame 10 with screws lla,
It is concluded with llb.

When the bottom cover 11 is connected to the main body frame 10, the inner surface of the bottom cover 11 and the ribs 27c and 27d come into contact with each other, so that the roll paper holder is connected to the hook hole 27a127b of the portion 27.
and the control circuit board 14 are isolated from each other, and the hook hole 2
Dust is prevented from entering the control circuit board 34 from 7a, 27b.

The control circuit board [4] and the power supply unit [5] are electrically connected to the lot number unit by a connection cord 16 through holes 17a and 17b.

Next, a case will be described in which the control circuit board 34 is checked or replaced in case of defects during assembly, rework, or maintenance in the market. Screws lla and lb of the bottom cover 11 of the facsimile machine assembled as described above
, and open the bottom cover 11 as shown in FIG. At this time, the bottom cover 11 can be opened very easily if the back side of the device is placed against a desk or the like. Then, the control circuit board 14 is checked and any malfunctioning parts are repaired. Further, when changing the destination, since the modular one terminal is integrated with the board 14, it is only necessary to replace the board 14 or the entire bottom cover 11.

In the above embodiments, the modular covers 23 and 24 are screwed to the base plate 14, but they may also be fixed to the bottom cover 11. In addition, when it is assembled temporarily by using hooks instead of screws, the board 14 and bottom cover 11
Since it is sandwiched between the two, the same effect can be obtained.

In the above embodiment, the roll paper receiving part of the main body frame is slightly tilted toward the front of the device, but this is a configuration aimed at having the effect that when the roll paper becomes small in diameter, the roll paper settles toward the front side due to gravity. be. In devices having a roll paper support shaft and in which the friction coefficient of the roll paper receiving surface is very small, this surface may be flat, or the roll paper receiving portion and the bottom cover may be in close contact with each other. Further, although ribs are provided on the main body frame side, ribs or spot members may be used on the bottom cover.

In addition, although the description has been given of a device in which the recording section is in the front and the document is conveyed to the back side, it is also possible to use a device in which this embodiment is used horizontally, which is related to the direction in which the document recording paper is conveyed. In addition, foamed maltbrene rubber or the like may be attached in place of the above-mentioned rib portion (or both may be implemented at the same time to improve sealing performance).

〔Effect of the invention〕

As detailed above, according to the present invention, a recording section is provided at one end of the device body, a reading section is provided at the other end, and a control circuit board is disposed at the bottom of the device main body on the reading section side. A bottom cover that allows the bottom of the apparatus main body to be opened and closed is used as a support member for the control circuit board, and the bottom cover is formed up to a position where the recording roll paper holder of the recording section is located, and the bottom cover and the recording section are connected to each other. The roll paper holder forms a part that prevents foreign matter from entering the control circuit board through the hole in the recording roll paper holder, so foreign matter may enter through the hole in the roll paper holder and cause damage to the circuit board. This has improved safety by preventing problems such as short circuits in the electrical circuits. Further, by simply replacing the bottom cover or the control circuit board, it is possible to easily handle version upgrades due to destination changes or specification changes, and the board can be repaired simply by opening the bottom cover.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a facsimile machine according to an embodiment of the present invention, FIG. 2 is a diagram when the bottom cover of FIG. 1 is opened, FIG. 3 is a side view of FIG. 1, and FIG. The figure is a sectional view taken from line 〇-〇 in Fig. 3, Fig. 5 is a sectional view taken from line PP in Fig. 3, Fig. 6 is a perspective view of the bottom cover in Fig. 1, and Fig. 7 is a sectional view taken from line 〇-〇 in Fig. 3. The figure is a configuration diagram of a conventional facsimile machine, Figure 8 is an external view of the facsimile machine of Figure 7 with an openable bottom cover, and Figure 9 is a diagram of the machine of Figure 8 when its strength is guaranteed. 1 is an outline diagram of a conventional facsimile device. IO...Body frame 11...Bottom cover 14...Control circuit board 21a to 21d...Modular terminal 22...Side wall 22a, 22b---Notch 23.24...Modular cover 27... Roll paper receiver 27c, 27d---rib, )q

Claims (1)

[Claims] A recording section is provided at one end of the device main body, a reading section is provided at the other end, and a control circuit board is disposed at the bottom of the device main body on the reading section side, and the bottom of the device main body can be opened and closed. The cover serves as a support member for the control circuit board, and the bottom cover is formed up to the position of the recording roll paper receiving part of the recording section, and the bottom cover and the recording roll paper receiving part support the recording roll paper receiving part. A facsimile machine characterized in that a part for preventing foreign matter from entering the control circuit board from the hole is formed.