JP2001313758A - Casing of electronic equipment and image reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a casing of electronic equipment which enables improvement in the assembly efficiency, the cost cut and the miniaturization of the electronic equipment and to provide on image reader. SOLUTION: At least a button 14 or a base board 16 is held and fixed between an original platen glass 1 and a cover 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing constituting an electronic apparatus, and more particularly, to an image reading apparatus for reading an image of a document, such as a scanner, a copying machine, or a facsimile machine.

[0002]

2. Description of the Related Art FIG. 7 is a schematic diagram showing the configuration of a color image reading apparatus. P denotes an original to be read placed on the original platen glass 100, and an image on the original is read by scanning the reading unit 101 in parallel with the original platen glass 100.

As shown schematically in FIG. 9, a reading unit 101 includes a three-color LE as a light source for illuminating a document.
D 101R, 101G, and 101B, a rod lens array 101L that forms reflected light from a document on a light receiving element of the image sensor, and an image sensor 101S are incorporated.

The color light sources are sequentially switched and turned on, and the image sensor reads the reflected light from the document for each color to perform color separation reading.

A reading unit 101 is a slider 102 which slides on a guide shaft 103 fixed to the main body of the apparatus.
Fixedly supported on top. A belt 1 for transmitting power from a motor 105 serving as a scanning drive source is provided on the slider 102.
04 is fixed. By the forward and reverse rotation of the motor, the reading unit can perform reciprocal scanning in the range of the platen glass.

The components of the image reading apparatus include an electrical unit 106 including a control board and a power supply in addition to the above components. These components are arranged in a cover 111 that fixedly supports the platen glass.

The inventor has previously proposed the following switch interlocking mechanism.

On the front surface of the image reading apparatus, there is provided a switch interlocking mechanism 107 provided in the apparatus main body. The switch interlocking mechanism 107 is disposed near a hole provided on the front surface of the apparatus as shown in FIG. 8, and is depressed by pressing a button (switch transmission member) 108 attached to the hole to separate it from the main board. ON / OF mounted on the board 109
Interlocks with switch 110 with F function and turns on the electrical unit
A mechanism for inputting an / OFF signal, which is fixed to the apparatus body using two screws 112.

FIG. 10 is a block diagram of the read image data processing by the image reading apparatus. An image output signal read by the image sensor 101 in synchronization with the sequentially blinking LED is sent to an amplifier 121 and amplified, and then converted into a digital image signal by an A / D converter 122.

The A / D converter divides the dynamic range of the image sensor (the read output difference between the pure white part and the pure black part on the original) by the number of bits, and performs gradation according to the brightness of the image on the original. Assign a number.

For example, when an A / D converter having a resolution of 8 bits is used, 256 gradation levels are set during the period from white to black, and 1 when a 10-bit A / D converter is used.
024 gradation levels.

Therefore, in an image reading apparatus using an 8-bit A / D converter, 24 bits = approximately 16.7 million colors, 10 bits in color reading using a light source of three colors of RGB.
In this case, 30 bits = approximately 1.074 billion colors can be identified.

There are several types of output forms of the image signal of the image reading apparatus, and an output form suitable for the use of the read image can be selected. When reading text and applying the content to OCR or when reading a monochrome line drawing, a monochrome binary image is suitable.
Image data obtained by binarizing an image signal obtained by lighting, for example, only G among the GB light sources by a certain threshold value in an image processing circuit incorporated in the gate array 123 is used.

When reading an image such as a photograph and outputting the image to a monochrome printer, the image is similarly binarized by using an image signal from a G light source and using a halftone process such as a dither method or an error diffusion method. The image data obtained is used. When performing color image processing, multi-valued (24-bit etc.) image data is suitable.

The image signal that has passed through the image processing circuit is sent to a device 20 such as a personal computer via an interface circuit 124.
0 or output to the image forming apparatus.

In the case of an image forming apparatus, for example, an electrostatic latent image is formed on a photosensitive drum by an electrophotographic method using a laser beam modulated by an image signal. The developing unit develops the latent image using toner as a developer to form a toner image, and the toner image is transferred to a sheet by the transfer unit. The transferred sheet is conveyed to a fixing unit, where the toner image is heated and fixed on the sheet.

[0017]

However, in the case of the above-described prior art, the following problems have occurred.

The above-described switch interlocking mechanism of the image reading apparatus has been proposed by the present inventor. However, in this case, it is necessary to fix the board and the switch transmitting member to the base, and a small space is required. Since small parts have to be incorporated into the device, it has been a factor of deteriorating assembly workability and increasing costs.

Also, this has led to an increase in the size of the apparatus.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. It is an object of the present invention to improve the efficiency of assembly, reduce costs, and reduce the size of an electronic apparatus. It is an object to provide a body and an image reading device.

[0021]

In order to achieve the above-mentioned object, a housing of an electronic device according to the present invention has an opening for inserting and arranging the electronic device therein, and turning on / off the electronic device. O
A frame having a hole for disposing a switch transmitting member to be flipped, a lid member for closing the opening, and a switch having a function of engaging with the switch transmitting member to turn on / off the electronic device are mounted. And a substrate, wherein at least one of the switch transmission member and the substrate is sandwiched and fixed between the lid member and the frame.

It is also preferable that the switch transmission member has an elastic arm, and the arm is sandwiched and fixed between the lid member and the frame.

Preferably, a groove is provided in the hole of the frame, and the switch transmission member includes a claw that can be locked in the groove.

An image reading apparatus includes a housing for the electronic device described above, wherein the electronic device is reading means for reading image information of a document, and the lid member is a document table on which the document is placed. It is characterized by being.

[0025]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the dimensions of the components described in this embodiment,
The material, the shape, and the relative arrangement thereof should be appropriately changed depending on the configuration of the apparatus to which the invention is applied and various conditions, and are not intended to limit the scope of the invention to the following embodiments.

(Embodiment 1) FIGS. 1 and 2 show a configuration example of an image reading apparatus (a housing of an electronic apparatus) according to the present invention. In the drawing, P denotes a read original placed on a platen glass (cover member) 1, and an image on the original is read by scanning a reading unit (electronic device, reading means) 2 in parallel with the platen glass 1. . The reading unit 2 incorporates a light source for illuminating the original, a lens that forms reflected light from the original on a light receiving element of the image sensor, and an image sensor.

Reference numeral 11 denotes a frame (hereinafter, referred to as a cover) which also serves as an exterior cover, and includes a document table glass 1, a reading unit 2, a switch interlocking mechanism 13, a rail for guiding the running of the reading unit 2, A transmission mechanism for transmitting a driving force to the reading unit 2 and a motor as a driving source, a control board, a power supply, and the like are housed.

The cover 11 is a hollow box having front, rear, left and right peripheral walls and a bottom plate, and is provided with ceilings 11a and 11b and openings along two front and rear sides of the cover 11. It is made by molding.

In the present embodiment, the front and rear refer to the front and rear in the moving direction when the original platen glass is attached to the cover. In FIG. 1A, the right side is forward, the left side is rearward, the upper side is left and the lower side. To the right.

The distance between the front and rear side walls of the cover 11 is set longer than the entire length of the document table glass 1, and a slide margin 11d for mounting the glass is provided on the rear side wall between the ceiling 11a and the rib 11c. deep.

Reference numeral 12 denotes a glass mounting member having a function as a reference when setting a document, that is, a plate for holding a glass made of resin. It is fixed in parallel and at a predetermined interval by fixing means.

Reference numeral 12a (hatched portion) indicates a sticking portion or a fixed portion, and a part of the rear end portion of the plate 12 as a mounting member is not fixed. The rear end of the plate 12 has a positioning protrusion or claw 12b in the left-right direction with respect to the cover 11 and a positioning protrusion or claw 12c in the front-rear direction. 12d is provided.

The cover 11 is provided with grooves 11f, 11g and 11h which are fitting concave portions corresponding to these convex portions.

Next, a method of mounting the original platen glass having the above configuration and a switch interlocking mechanism will be described with reference to FIGS.

A switch interlocking mechanism 13 provided in the apparatus main body is provided on the front surface of the image reading apparatus. The switch interlocking mechanism 13 is disposed near a hole 19 provided on the front surface of the apparatus as shown in FIGS. Is the ON / OF mounted on another board 16
In conjunction with switch 15 with F function, ON / OFF
A mechanism for inputting an OFF signal.

Button (switch transmission member) 1
4 is attached to the cover 11. At this time, the claw portion 18 can be temporarily fixed in the groove provided in the hole portion 19 and can not be detached from the cover 11. Then, cover the substrate 16 with the cover 1
1 is fixed with screws 17.

The procedure for mounting the platen glass 1 is as follows: (1) First, the rear end of the platen glass 1 is inserted into the back of the cover 11. At this time, the rear portions of the plates 12 at both ends are lifted as shown in FIG. As described above, since this portion is not adhered to the platen glass 1, it can be bent and lifted from the platen glass 1 when lifted.
Slide the platen glass 1 toward the back side of the cover 11
Shift along d.

(2) Then, the front end of the original table glass 1 falls into the glass mounting portion of the cover 11 soon.

(3) Thereafter, when the original table glass 1 is shifted forward, the original table glass 1
Of the plate 1 held by the ceiling 11b and the rib 11e
(2) The positioning claw 12d at the front end fits into the corresponding groove of the cover 11.

(4) Subsequently, when the rear end of the plate 12 is pushed downward, the positioning claw portions 12b in the left-right direction and the positioning claw portions 12c in the front-rear direction are fitted into the corresponding grooves of the cover 11, and the platen glass 1 is placed. It is fixed to the cover 11.

At this time, as shown in FIG.
The rib 11j integrally formed on the end 1a of the cover 11 and the cover 11 sandwiches the elastic arm 14a of the button (switch transmission member) 14, which is a part of the switch interlocking mechanism 13, and fixes the pressed button. It also performs the function of restoring to a predetermined position. Therefore, the number of elastic members such as springs can be reduced.

The end 1a of the platen glass 1 is a plate 12
Since this serves as a reference surface when fixing to the platen glass 1, its position accuracy is excellent, so that the button (switch transmission member) 14 can be accurately fixed.

The switch interlocking mechanism 13 can output a scanned image directly to a printer or a facsimile or can be attached as an image file to an e-mail by interlocking with a utility software included in the product by pressing a button 14. Further, it has a function of outputting a scanned image to any application specified by the user.

According to the present invention, since the button (switch transmitting member) 14 is fixed by using the original table glass 1, an attaching mechanism for fixing the button (switch transmitting member) 14 to the cover 11 or the substrate is required as in the conventional case. It is lost and is fixed with high accuracy.

Further, by providing the button 14 with an elastic function, an elastic member such as a spring is not required. Therefore, it greatly contributes to reduction of parts cost, improvement of assembly workability, and further downsizing.

(Embodiment 2) FIG. 5 shows an image reading apparatus according to Embodiment 2. The image reading apparatus according to the present embodiment is different from the above-described first embodiment in a member fixed by being sandwiched between a glass end and a rib formed integrally with the cover.

That is, in the first embodiment, the button (switch transmission member) 14 in the switch interlocking mechanism 13 is fixed by being sandwiched between the glass end 1a and the rib 11j formed integrally with the cover 11. Button 14 in the form of
Instead, a substrate 26 on which a switch having an ON / OFF function is mounted is sandwiched and fixed.

In this case, since it is not necessary to fix the base 26 using screws, the substrate 26
If the positioning is performed by the positioning portion 11k, the switch interlocking mechanism 23 can be fixed with high accuracy.

(Embodiment 3) FIG. 6 shows an image reading apparatus according to Embodiment 3. The image reading apparatus according to the present embodiment is different from the above-described first and second embodiments in a member fixed between a glass end and a rib formed integrally with a cover.

That is, in the first embodiment, the button (switch transmission member) 14 in the switch interlocking mechanism 13 is used, and in the second embodiment, the substrate 26 is formed by the glass end 1 a and the cover 1.
In the present embodiment, the button 34 and the board 36 on which a switch having an ON / OFF function is mounted are sandwiched and fixed together.

In this case, it is not necessary to fix the base 36 to the base by using a screw.
If the position is determined by the positioning portion 11k, the switch interlocking mechanism 33 can be reliably and accurately fixed.

Further, the need for a mechanism for attaching the button 34 is eliminated, which greatly contributes to a reduction in component costs, an improvement in assembly workability, and a reduction in size.

In the above-described embodiment, the scanner is exemplified as the image reading apparatus. However, the present invention can be similarly applied to a copying machine other than the scanner, and is applied to the image forming apparatus. It is also possible to apply the present invention to a housing of an electronic device in which a switch transmission member having a lid member for turning on / off the electronic device is disposed in the hole.

[0054]

As described above, according to the present invention,
Since at least one of the switch transmission member and the substrate is sandwiched and fixed between the lid member and the frame, it is possible to improve the assembling efficiency, to reduce the cost and to reduce the size of the device. Can be provided.

Further, the switch transmitting member has an arm having elasticity, and the arm is sandwiched and fixed between the lid member and the frame, so that an elastic member such as a spring is reduced. And the configuration can be simplified.

Further, a groove is provided in the hole of the frame, and the switch transmission member is provided with a claw that can be locked in the groove, so that the switch transmission member can be temporarily fixed, so that the assembling efficiency is further improved. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an image reading apparatus according to Embodiment 1, wherein FIG. 1A is a top view, and FIGS. 1B and 1C are side views.

FIG. 2 is a schematic view of a main part showing an image reading apparatus according to Embodiment 1, wherein FIG. 2A is a top view, and FIGS.
(C) is a side view.

FIG. 3 is a schematic diagram illustrating a method of mounting a platen glass of the image reading apparatus according to the first embodiment.

FIG. 4 is a schematic diagram illustrating a main part of the image reading apparatus according to the first embodiment;

FIG. 5 is a schematic diagram illustrating a main part of an image reading apparatus according to a second embodiment;

FIG. 6 is a schematic diagram illustrating a main part of an image reading apparatus according to a third embodiment;

FIG. 7 is a schematic diagram showing a conventional image reading apparatus.

FIG. 8 is a schematic diagram showing a main part of a conventional image reading apparatus.

FIG. 9 is a schematic diagram showing a reading unit.

FIG. 10 is a block diagram of read image data processing by the image reading apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 platen glass 1a end 2 reading unit 11 cover 11a, 11b ceiling 11c rib 11d slide margin 11f, 11g, 11h groove 11j rib 11k positioning part 12 plate 12a sticking part 12b, 12c, 12d nail part 13, 23, 33 Switch interlocking mechanism 14, 24, 34 Button 14a Arm 15 Switch 16, 26, 36 Substrate 17 Screw 19 Hole

Claims (4)

[Claims] 1. A frame having an opening for inserting and arranging an electronic device therein, a hole for disposing a switch transmitting member for turning on / off the electronic device, and a lid member for closing the opening. ON / OF the electronic device by engaging with the switch transmission member
And a substrate on which a switch having a function of causing F is mounted, wherein at least one of the switch transmission member and the substrate is sandwiched and fixed between the lid member and the frame. Of electronic equipment to be used. 2. The switch transmission member according to claim 1, wherein the switch transmission member has an arm having elasticity, and the arm is sandwiched and fixed between the lid member and the frame. Electronic equipment housing. 3. The housing for an electronic device according to claim 1, wherein a groove is provided in a hole of the frame, and the switch transmission member includes a claw that can be locked in the groove. body. 4. The electronic device according to claim 1, wherein the electronic device is reading means for reading image information of a document, and the lid member is a document on which the document is placed. An image reading device, which is a table.