JP2006178127A - Housing structure for image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the occurrence of failure caused by the secular degradation of an adhesive by performing reinforcement depending on screwing simultaneously with applying an adhesive method in the case of attaching a housing part for an operation manual or the like to the external part of a body housing in the housing structure for an image forming apparatus. <P>SOLUTION: A screw hole on a body side is provided by integrally forming a boss at a part of the external part of the housing. Then, only a lower hole for a screw is provided in the boss, and when a user actually mounts the hosing part 9 on the external part 12 of the body housing and drives the screw 10, thread is cut simultaneously, whereby the housing part is fixed through the screw. Thus, the mount strength of the housing part 9 is enhanced without providing a through-hole in the external part 12 of the body housing, and the occurrence of the failure such as the drop of the housing part 9 caused by the secular degradation of the adhesive is prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a main body structure in a PPC / FAX / printer or the like (color / monochrome) and an image forming apparatus having a composite function thereof, and is attached to an exterior portion among fields related to a housing structure / exterior structure / electric transmission system. It relates to the improvement of the installation problem of the storage part such as the instruction manual.

Conventionally, in a copier, printer, FAX single function machine or its multifunction machine, a box-shaped space is formed by adhering to the exterior of the housing with double-sided adhesive tape as a storage for handling instruction documents, etc. It has a storage unit with the function of holding instruction manuals (hereinafter referred to as manuals).
By attaching with double-sided adhesive tape, it can be installed anywhere in the main body of the image forming apparatus, and it can be installed in any place other than the image forming apparatus. Therefore, it has a highly convenient configuration.

However, as a problem in the above configuration, due to the deterioration over time of the double-sided adhesive tape itself and the state of the pasting place (when oil remains on the surface, etc.), peeling occurs over time, and in the worst case, There was a case of falling with manuals.

  On the other hand, when the storage portion is fixed to the housing exterior portion with screws, it is necessary to provide screw holes in the housing exterior portion. However, it is forbidden by the Electrical Appliance and Material Control Law and the like to provide a through hole in the housing exterior part for the purpose of protecting internal wiring and the like. Therefore, when screw fixing is employed, it is necessary to prevent the screw hole from being a through hole.

  Further, the method of attaching a screw to the housing exterior portion and engaging the storage portion with the screw has a problem that the degree of freedom of optional attachment of the storage portion is reduced due to the presence of the screw installation portion.

  Furthermore, in the case of the method in which the storage part is pasted with a double-sided adhesive tape, the above-mentioned problem occurs when the casing exterior part is made of plastic, but when the casing exterior part is made of metal, there is no problem of deterioration over time. The strength is kept good. Therefore, it is desirable that the double-sided adhesive tape method can be used together even when screw fixing is employed.

When the storage unit is fixed to the image forming apparatus with screws, and both sides are bonded, once the double-sided adhesive is fixed, the procedure is to reinforce and fix with screws. The holes need to match.
It is necessary to reduce the number of parts and the like used for positioning the screw holes as much as possible so that the user can use them easily.
In addition, when the casing exterior part is made of plastic, casting is adopted as a manufacturing method, and therefore it is necessary to have a configuration with good hot water flow.
JP 2004-61957 A

The housing structure of the image forming apparatus of the present invention is made in view of the above problems, and it is an object of the present invention to provide a housing structure capable of preventing the occurrence of the above-mentioned problem by performing reinforcement by screwing simultaneously with the bonding method. And
Furthermore, it is an object of the housing structure of the present invention to perform surface regulation by having at least two or more screws.
Furthermore, since the housing structure of the present invention performs the double-sided adhesive tape fixing and the screw fixing at the same time, it is possible to align the screw position for fixing the position screw with the mounting hole position by a simple method. And
Furthermore, it is an object of the present invention to provide a housing structure that has the above-described function and does not require a change in shape of the storage portion even in the case of only adhesive fixing.

As means for solving the above problems, the present invention has the following features.
2. The housing structure of an image forming apparatus according to claim 1, wherein the housing structure is a housing exterior portion of the image forming apparatus main body for attaching a storage portion for storing documents and the like. A protrusion is provided on the inside of the housing, and the storage part and the protrusion are fastened by a fastening member.
The image forming apparatus housing structure according to claim 2, wherein the main body housing exterior portion is made of plastic, is integrally formed with the protrusion, and each portion has a thickness of 3 mm or less. Features.
4. The housing structure of an image forming apparatus according to claim 3, wherein the housing structure further includes a plurality of protrusions.
According to a fourth aspect of the present invention, the housing structure further includes at least one positioning shaft hole for regulating a fastening position.

6. The housing structure of an image forming apparatus according to claim 5, wherein the housing structure further has a housing portion fixed by an adhesive type and can be fastened by a fastening member simultaneously with the bonding. Features.
The housing structure of the image forming apparatus according to claim 6 is characterized in that the housing structure further includes a positioning member in a part of the storage portion.
The housing structure of the image forming apparatus according to claim 7 is characterized in that the housing structure has a structure that does not hinder the bonding function when the bonding structure is held alone.
The housing structure of the image forming apparatus according to claim 8 is characterized in that the housing structure further has a structure in which the positioning member can be easily detached from the storage portion.

As described above, according to the means for solving the above-described problem, the housing structure of the present invention can reinforce the adhesive force by screwing simultaneously with the bonding method.
Furthermore, in the case structure of the present invention, when the storage unit is fixed to the image forming apparatus with screws and bonded on both sides, the screw fixing procedure with the screws is performed once after the double-sided adhesive fixing. And the fixing holes of the storage section must match, but as shown in the embodiment, it is possible to regulate the surface by having at least two or more screws. In the case structure of the invention, since the double-sided adhesive tape is fixed and the screw is fixed at the same time, the positioning shaft is positioned on the machine body so that the screw position for fixing the position screw and the mounting hole position can be aligned once. By screwing it in, the screwing work is ensured.

Furthermore, in the housing structure of the present invention, the object is achieved by providing the positioning shaft as a part of the shape of the storage portion.
In addition, the housing structure of the present invention can be used without changing the shape of the storage part, even when only a part of the positioning shaft shape is adhesively fixed by installing it opposite to the double-sided adhesive part. With this configuration, the current function can be satisfied.
Furthermore, in the housing structure of the present invention, the positioning operation can be easily performed by adopting a configuration in which the positioning pin provided in the storage portion can be easily separated from the storage portion.

FIG. 1 shows a schematic configuration of a main body of an electrophotographic image forming apparatus according to an embodiment of the present invention.
The image forming apparatus of the present embodiment will be described by taking as an example an in-body discharge type having a main body tray 3 in a space between an original glass 2 on which an original is placed and a paper feed tray 8.
First, the user places a document on the document placing unit or the document glass 2 of the automatic document feeder 1 and presses the copy start button on the operation unit 4. Then, the placed document is read by the reading unit under the document glass 2 and the recording paper is conveyed from the paper feed tray 8 to an image forming unit (not shown). After the image is formed at the image forming unit, the paper is discharged to the main body tray 3 for single-sided printing, and for double-sided printing, the paper is reversed by the double-sided unit 6 and the image is formed again on the back side by the image forming unit. The paper is discharged to the tray 3.
The image forming unit is disposed inside the front cover 7, and maintenance of the image forming unit is possible by opening the front cover.
The main body of the apparatus is covered with the main body casing exterior portion 12 to protect electrical parts such as electronic components and wiring inside the apparatus which are not described.
In FIG. 1, an embodiment of the present invention is shown in the storage portion 9. Thus, it is common to attach to the exterior part of a main body housing | casing. Therefore, also in the present embodiment, screw holes described below were attached to the housing exterior portion of this portion. In this embodiment, the main body casing exterior part is made of plastic.

As shown in FIG. 2, in the present invention, both ends are fixed to the apparatus main body casing with screws to prevent problems due to deterioration of the adhesiveness of the double-sided adhesive tape over time.
The screw hole on the main body side has a protrusion (hereinafter referred to as “a part of the main body casing exterior portion 12) as shown in FIG. 7 in order to prevent disconnection of wiring inside the apparatus or contact with electronic parts by screwing work. It is provided by integrally forming a “boss”. The thickness t3 of the boss portion 14 is the same as the thickness t2 of the main body housing portion 12, and is preferably 3 mm or less. It takes into account the strength of the housing and the flow of plastic. Similarly, the thickness t1 of the storage portion 9 is preferably 3 mm or less.

The boss 14 is provided only with a pilot hole 15, and when the user actually attaches the storage portion 9 to the main body housing exterior portion 12, the screw 10 is screwed at the same time. It is a screw-fixed method. Since it is a plastic pilot hole 15, it is a simple and inexpensive method in that it can be easily threaded and fixed with a screw at the same time by the above method, and does not require prior machining of a screw hole.
Moreover, the depth of the pilot hole 15 of the boss | hub 14 is provided so that it may become longer than the insertion length of a screw. With this configuration, it is possible to prevent a screw from being inserted deeply by mistake and to protrude into the apparatus, and to collect powder generated during threading in the space.

As shown in FIG. 3, in the present invention, a screw hole is provided so as to penetrate through the housing portion and the double-sided adhesive tape at the same time.
In FIG. 3, the through holes installed on the left and right of the storage unit 9 are the same as the through holes of the storage unit 9 when the storage unit 9 is attached to the main body housing exterior unit 12 using both the double-sided adhesive tape 11 and screw fixing. It is used to align the position of the pilot hole 15 of the main body casing exterior portion 12 (see FIG. 6).
This is because the user can easily attach the storage unit 9 to the correct position by removing the seal that covers the surface of the double-sided adhesive tape 11 after the alignment.

FIG. 7 shows a cross-section of the attachment portion when attached with the screw 10. With this method, both the double-sided adhesive tape 11 and the screw 10 can be used, and the double-sided adhesive tape 11 can be fixed only with the screw 10 without removing the seal. In any case, since the double-sided adhesive tape 11 serves as a washer, it can be firmly fixed by the screw 10 and can prevent problems due to the deterioration with time.

As shown in FIG. 4, in the present invention, a positioning pin for positioning is formed at the end of the storage portion and can be easily removed by forming a perforation.
The increase in the number of parts is suppressed, and the user can correctly attach the storage unit 9 by a simple method.

FIG. 5 illustrates a method of separating the positioning shaft component 13 from the storage portion. It can be easily removed by cutting the perforations.
FIG. 6 describes an attachment method using the positioning pin described above.
Positioning is performed by once inserting the positioning shaft component 13 of FIG. 5 into the corresponding lower hole 15 of the main body housing exterior portion 12 through the left and right through holes of the storage portion 9, and the positions of the holes are not shifted in this state. In the same manner, the housing portion 9 is aligned and temporarily fixed by screwing the screw 10 into the prepared hole of the main body housing exterior portion 12 corresponding to the through-hole position below the housing portion 9. If the double-sided adhesive tape 11 is used, the seal is removed at this stage. After that, the positioning shaft component 13 is pulled out, and the screw 10 is screwed into each through hole of the storage portion 9, so that the storage portion 9 is easily fixed at the correct position using both the double-sided adhesive tape 11 and the screw 10. be able to.

In FIG. 7, the detail of the attaching part of the accommodating part 9 and the housing | casing exterior part 12 is shown.
In the boss 14 attached to the main body casing exterior portion 12, the thickness of the main body portion and the boss portion 14 is equal to t2 = t3 in consideration of the hot water flow during casting. By adopting such a boss shape, the housing portion 9 can be fixed with screws without opening a through hole in the main body housing exterior portion 12. Moreover, it is sufficient that only the prepared hole 15 formed in the casting is clear in the boss portion 14, and there is no need for screw machining as described above, so that the housing exterior portion 12 can be manufactured easily.
Moreover, even if the insert (insertion-type female screw) is inserted into the pilot hole 15 in advance and the insert is covered with a screw, the insert is covered with a boss. Can be easily fixed without worrying about short-circuits with wiring and electronic equipment.

1 is a schematic configuration diagram of an electrophotographic image forming apparatus showing an embodiment of the present invention. It is a figure which shows the screwing position of the both ends for improving the adhesiveness in a double-sided adhesive tape. . It is explanatory drawing of the screw hole part which penetrates a accommodating part and a double-sided adhesive tape simultaneously. A positioning pin for positioning is formed at the end of the storage portion, and a perforation is formed so that it can be easily removed. A method for separating the positioning shaft component from the storage portion will be described. It can be easily removed by cutting the perforations. The description of the mounting method using the positioning pin described above is described. It is sectional drawing of the attaching part of an accommodating part and a main body side cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Document cover / automatic document feeder 2 Document glass 3 Main body tray 4 Operation part 5 Main body upper tray 6 Duplex unit 7 Front cover 8 Paper feed tray 9 Storage part 10 Storage part attachment screw 11 Double-sided adhesive tape 12 Main body case exterior part 13 Positioning shaft parts 14 Boss 15 Pilot hole

Claims (8)

In the housing structure of the image forming apparatus for attaching a storage unit for storing documents and the like,
The housing structure of the image forming apparatus is characterized in that a protrusion is provided inside a housing exterior portion of the main body of the image forming apparatus, and the storage portion and the protrusion are fastened by a fastening member. Construction. The housing structure according to claim 1,
The image forming apparatus casing structure, wherein the main body casing exterior part is made of plastic and is formed integrally with a protrusion, and each part has a thickness of 3 mm or less. The housing structure according to any one of claims 1 to 2,
The housing structure of an image forming apparatus, wherein the housing structure has a plurality of protrusions. The housing structure according to any one of claims 1 to 3,
The housing structure of an image forming apparatus, wherein the housing structure has at least one positioning shaft hole for regulating a fastening position. The housing structure according to any one of claims 1 to 4,
The housing structure has a storage portion fixed by an adhesive type,
A housing structure for an image forming apparatus, which can be fastened by a fastening member simultaneously with bonding. The housing structure according to any one of claims 1 to 5,
The case structure of the image forming apparatus is characterized in that a positioning member is provided in a part of the storage portion. The housing structure according to any one of claims 1 to 6,
The case structure of an image forming apparatus, wherein the case structure has a structure that does not impair an adhesion function when held by an adhesion method alone. The housing structure according to any one of claims 1 to 7,
The housing structure of an image forming apparatus, wherein the housing structure has a structure in which a positioning member can be easily detached from a storage portion.

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