JPH0470251A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To lower the height of a circuit base plate itself so that the height of a whole device is lowered by forming a bottom cover so as to reach the tip part position of one end side of a device main body, and simultaneously, arranging electric parts on the bottom cover. CONSTITUTION:The bottom cover 11 is fitted to a main body frame 10 by a screw. A control circuit base plate 14 is fitted to the bottom cover 11, and it can be repaired by opening the bottom cover 11 by taking out the screw. The fitting position of a speaker 19 is at a lower part interposed between a roll paper receiving part and a printing part. This position is dead space of the device, and in order to put this dead space to good use, the space is formed by the main body frame 10. The bottom cover is extended to this position, and the large-sized electric parts such as the speaker 19, etc., are arranged on the part of this extended bottom cover 11.

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 rapidly spread throughout the world, and 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]

In facsimile machines, it is necessary to check the control circuit board 34 in order to correct defects during assembly or to perform maintenance in the market.However, in conventional facsimile machines, after removing the top cover 32, each unit and electronic component are installed. The control circuit board 34 must be checked by lifting the main body frame 31 so as to rotate it in the R direction about the shaft 36, which is very time-consuming. Furthermore, when changing specifications, it was necessary to disassemble and reassemble the device once installed.

In order to solve this problem, some facsimile machines have recently been equipped with a bottom cover 37 that can be opened and closed at the bottom as shown in FIG.

Such a device has a main body and side walls integrated into a main body frame 38.
The bottom cover 37 and the top cover 39 form the exterior. Control circuit board 3 is attached to this bottom cover.
4 is provided, but the size of the control circuit board 34 is very limited. This is because the wall thickness of the lower end of the main body frame 38 becomes extremely thin due to the influence of the draft angle, making molding difficult. That is, if an attempt is made to ensure a height h above the substrate 34 of about 30 to 40 mm, the tip X2 of the main body frame 38 becomes extremely thin, and molding errors are likely to occur. This is because, due to the structure of the mold, the exterior surface S needs to have a draft angle of at least 3 degrees and the inner wall T needs to have a draft angle of at least 1 degree. - If the thickness of the blade body frame 38 is not constant, sink marks and welds will occur. Therefore, since the thickness of X cannot be larger than 3 to 4 mm, x2 becomes thinner. Therefore, a device main body having such a configuration was not actually manufactured, and a configuration as shown in FIG. 9 was adopted instead. The configuration of this facsimile device solves the above-mentioned problem by providing a bag-shaped portion 38a at the bottom of the frame body, but it not only doubles the thickness of the tip but also requires an additional thickness x3 of the core mold. Therefore, although the device is large, the board space x4 is small.

If large electrical components such as a speaker were to be installed in such a facsimile machine, the main body of the facsimile machine would become even larger.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks and to provide a facsimile machine in which large electrical parts are arranged in the dead space of the machine.

[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 to a tip position on one end side of the device main body beyond the recording roll paper receiving portion of the recording unit. At the same time, electrical components are arranged on the bottom cover at the tip end on one end side of the device main body.

〔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 part, 6 is a recording paper cutting part, as shown in the dotted line (forming a unit when assembled), 7 is a paper stacking part, 8 is a recording paper curl removal part, 9 is a paper curl removal part The operation panel section forms a unit when assembled together with the upper part of the document transport section 2 as shown by the dotted line in the figure. Reference numeral 10 indicates a main body frame, and 11 indicates a main body frame 10 with screws Ila and Ilb.
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 with screws Il
It can be repaired by removing a and flb and opening the bottom cover 11 as shown in FIG.

15 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, and the speaker is attached at a lower portion between the roll paper receiving section 26 and the printing section 5. This position is the dead space of the device described above, and in order to effectively utilize this dead space, this space is formed by the main body frame 10. The bottom cover 11 is extended to this position, and large electrical components such as a speaker 19 are arranged in the extended part of the bottom cover 11. 20 is a shield plate.

Here, FIGS. 2 and 3 show side views of the device shown in FIG. 1, and 22 is a side wall that is molded separately from the main body frame 10. On both sides of this side wall 22 are substrates 14, respectively.
Modular cover 2 fixed with screws 23a and 24a to
3.24, there are cutouts 22a and 22b for positioning the modular terminals 21a to 2 in the cover 23.
1c 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 is constructed as shown in FIGS. 4 and 5 (cover 23
．． The parts other than the notches 22a and 22b for 24 are flat plate-like, and the grooves 22, &,
221b, and a groove 22°3.22□5 that fits into 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. The 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]O, 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 allows the space to be set to the maximum and also allows the bottom cover 11 to be mounted reliably. Further, a notch 22a122b is provided in the side wall 22, and the notch 22a122b is 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 23.
．． 24, the side wall 22, and the main body frame 10, it has 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 l 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 a preliminary conveyance roller 2C in pressure contact with a and a separation roller 2d in pressure contact with a separation friction piece 2b, and further by a paper feed roller 2g in pressure contact with a pressure roller 2e and a paper discharge roller 2h in pressure contact with a 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 thermosensitive recording paper 4 is a roll paper that is stored in a roll receiving portion of the frame IO 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 recording paper 4 is configured to print one dot at a time 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, as shown by the two-dot chain line, and then passes between the inner tray 7a and the outer tray 7.
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 its mouth and 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 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 10 is attached to the side wall 22. At this time, the groove portion 22 of the side wall 22,
a, 22, and b so that the ends of the main body frame 10 are inserted into them, and the main body frame lO is attached to the side wall 22 by screws 2.
23. Conclude at 224. Thereafter, each unit is assembled by dropping it into the main body frame 10 using an automatic assembly machine. That is, first, a unit provided with the recording paper cutting section 6 is assembled and attached. Next, a unit equipped with the optical system reading section 3 is assembled and attached. Then, the power supply unit 15 is assembled and attached to the storage section of the main body frame IO.

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 transport section 2 is assembled and attached to the main body frame IO.

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 1o.

This completes the automatic assembly by dropping each unit, but after this, other parts are assembled to the main body frame 10. While assembling other parts, the control circuit board 14 and speaker 19
Attachment of the bottom cover 11 will be carried out. At this time, after hooking the claw at the tip of the bottom cover 11 into the groove of the main body frame IO, fit the bottom cover 11 so that the protruding pieces 23b and 24b of the modular cover 23.24 are inserted into the groove 222a122□5 of the side wall 22. 11 to the main body frame IO using screws 11a and llb. Electrical connections between the control circuit board 14, the power supply unit 15, and its lot number unit are made 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 llb 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 work 4 is checked and any malfunctioning parts are repaired. Further, when changing the destination, since the modular one terminal is integrated with the board I4, 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 example, the large electrical components fixed on the bottom cover are explained as speakers, batteries, etc., but they are directly connected to control circuit boards such as noise filters, cores, lighting inverters, motor driver circuits, etc. If it is a part, the same effect can be obtained in that east line processing is not required at the time of assembly.

〔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 device main body to be opened and closed is the control circuit board support member, and the bottom cover is formed to a tip position on one end side of the device main body beyond the recording roll paper receiving portion of the recording section. At the same time, we have not only made the device thinner, with electrical components placed on the bottom cover at the tip of one end of the device body, but also installed control circuit boards such as speakers and batteries in the space between the roll paper and the platen roller. It is possible to arrange large components that are directly connected to This ease of maintenance also leads to a reduction in assembly man-hours, resulting in a low-cost device.

[Brief explanation of the drawing]

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 OO 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 The figure is a configuration diagram of a conventional facsimile machine, Figure 8 is an external view of the facsimile machine of Figure 7 when the bottom cover can be opened, and Figure 9 is a diagram of the facsimile machine of Figure 8 when its strength is guaranteed. 1 is an outline diagram of a conventional facsimile device. 10...Body frame 11...Bottom cover 4...Control circuit board 19...Speakers 21a to 21d...Modular terminal 22...Side walls 22a, 22b -Notches 23, 24...・Modular cover, J&

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 is used as a support member for the control circuit board, and the bottom cover is formed to extend beyond the recording roll paper receiving section of the recording section to a tip end position on one end side of the apparatus main body, and to extend beyond the recording roll paper receiving section of the recording section to a tip end position on one end side of the apparatus main body. A facsimile device characterized in that electrical parts are arranged on the bottom cover.