JPH10126542A - Contact glass mount device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more simply mount a contact glass. SOLUTION: A cover mount hole 2b and a cover positioning hole 2c are made to a corner of a scanner base 2 on which a contact glass 1 is placed and an extension part 2f is formed on a part of the cover positioning hole 2c. Furthermore, L shaped cover mount projections 3a and a cover positioning projection 3b with a slit 3c are formed upright to a scanner cover 3. In the case of positioning the scanner cover 3 to both sides of the scanner base 2, the cover mount projections 3a passing through the cover mount hole 2b have the contact glass 1 and the scanner base 2 in-between and the slit 3c is placed to the side of the extension part 2f. The scanner cover 3 is fixed to the scanner base 2 by sliding the scanner cover 3 in this state to allow the extension part 2f to be fitted to the slit 3c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact glass mounting apparatus applied to a copier, a facsimile machine, and the like having a book reading type scanner.

[0002]

2. Description of the Related Art Conventionally, as a method for optically reading an image of a document, a sheet reading type for reading an image of a document by moving a document while fixing a scanner, and a scanner for moving a scanner while fixing a document. Thus, there is a book reading type that reads an image of a document.

In the case of the book reading type, a transparent contact glass is arranged above the scanner, and a document is placed on the surface of the contact glass, and the image surface of the document is brought into close contact with the contact glass. A configuration in which the scanner is moved from the back side of the contact glass is generally applied.

[0004]

Incidentally, for example, in a copying machine, maintenance such as jam clearance and replacement of parts may be required. In consideration of the workability of maintenance, the mounting structure of various parts is simple. It goes without saying that things get easier to work with. In particular, in an image recording apparatus having a sheet reading type scanner, when it is necessary to remove the contact glass, for example, for cleaning the contact glass or performing maintenance of the scanner unit, the maintenance is easier as the contact glass mounting structure is simpler.

[0005] It is an object of the present invention to provide a contact glass mounting apparatus which allows mounting of a contact glass more easily.

[0006]

According to the present invention, there is provided a contact glass interposed between an optical reading means for reading an image of a document and the document, the contact glass being in close contact with the surface of the document, and a contact glass. A substantially rectangular parallelepiped scanner base supporting the glass on the upper surface, and the contact glass placed on both sides of the scanner base and placed so as to cover an opening formed in the scanner base is attached to the scanner base. A contact glass mounting device having a scanner cover for fixing to the scanner base, at one or more locations at the corners of the scanner base,
A cover mounting hole is continuously formed from the upper surface to the side surface of the scanner base, and when the scanner cover is mounted on both sides of the scanner base, the scanner cover enters the scanner base through the cover mounting hole. Further, a substantially L-shaped cover mounting projection for sandwiching the contact glass and the scanner base is provided at one or more locations on the scanner cover. According to such a configuration, the contact glass can be fixed to the scanner base while the scanner cover is fixed to the scanner base.

In one or more corners of the scanner base, a cover positioning hole is continuously formed from the upper surface to the side surface of the scanner base, and the corner of the scanner base is formed on the side surface of the scanner base. Forming an extension such that the width of the hole on the side is smaller than the width of the hole on the upper surface at the boundary, and furthermore, when the scanner cover is positioned on both sides of the scanner base, A cover positioning protrusion having a slit which is located on a side and has a slit which engages with the extending portion by sliding the scanner cover along a side surface of the scanner base is provided at one or more positions on the scanner cover. It is characterized by having. With this configuration, the contact glass can be fixed to the scanner base at the same time that the scanner cover is fixed to the scanner base, and the movement of the scanner cover in the sliding direction can be restricted.

Further, in the hole on the upper surface and the hole on the side surface for forming the cover mounting hole, the hole on the side surface of the scanner base is wider than the width of the hole on the upper surface at the corner of the scanner base. Forming an extending portion such that the width of the portion is reduced,
Further, when the scanner cover is positioned on both sides of the scanner base, the scanner cover is located on the side of the extending portion, and the scanner cover is slid along the side surface of the scanner base to engage the extending portion. The present invention is characterized in that the cover positioning projection which forms a matching slit between the cover mounting projection and the cover mounting projection is provided at one or more locations on the scanner cover. Further, an extension portion is formed in a range from the bent portion to the front end portion of the cover mounting projection, and the scanner cover is positioned along both sides of the scanner base while the scanner cover is positioned on both sides of the scanner base. And slide it,
The edge of the scanner base, which forms the cover mounting hole, is inserted between the surface of the scanner cover and the extending portion. With such a configuration, the scanner cover can be fixed to the scanner base and the contact glass can be fixed to the scanner base with a simple configuration, and the movement of the scanner cover in the sliding direction can be restricted.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing constituent members and a structure of an apparatus according to a first embodiment of the present invention, wherein 1 is a contact glass, 2 is a scanner base supporting the contact glass 1, and 3 is a scanner base 2 3 shows a scanner cover attached to a corner of the scanner glass and fixing the contact glass 1 to the scanner base 2.

The scanner base 2 is a substantially rectangular parallelepiped casing. Here, for convenience of explanation, the surface of the scanner base 2 that faces each other in the direction perpendicular to the longitudinal direction is a side surface, and the surface indicated by one symbol A of the two surfaces facing the longitudinal direction is a rear surface, The other surface is referred to as a front surface, and the surface connected to the front and rear surfaces and the two side surfaces is referred to as an upper upper surface.

An opening 2a is formed in the upper plate of the scanner base 2. Opening 2a in scanner base 2
The cover mounting hole 2b is formed at the side of the four corners and at the corner between the upper surface and the side surface, and the cover mounting hole 2b is a continuous through hole extending over the upper surface and the side surface of the scanner base 2. Further, cover positioning holes 2c are formed at both ends of the corners of the upper surface and the side surface of the scanner base 2, and the cover positioning holes 2c are partly and side surfaces of the hole 2d on the upper surface side of the scanner base 2. The side hole 2e is a continuous through hole. Here, since the width of the hole 2d in the longitudinal direction of the scanner base 2 is larger than the width of the hole 2e,
An extension 2f is formed on the front side of the hole 2e.

The scanner cover 3 has a bottom surface in a rectangular parallelepiped.
(Lower surface), a shape in which one side surface of two side surfaces parallel to the longitudinal direction is opened, an upper surface, a front surface and a rear surface continuous with both ends of the upper surface, and a front surface, a rear surface, and a side surface continuous with the upper surface. It is composed of In particular, the surface indicated by reference numeral B is a rear surface, and the front surface is opposed to this rear surface. The top and side surfaces of the scanner cover 3 are set slightly longer than the side surfaces of the scanner base 2. When viewed in B in FIG. 1, a cover mounting projection 3a formed substantially in an L-shape is provided upright on the upper surface inside the scanner cover 3, as shown in FIG. As shown in FIG. 2, cover positioning projections 3b having slits 3c parallel to the side surfaces of the scanner cover 3 are provided upright on both sides of the upper surface of the upper surface 3a.

Next, attachment of the contact glass 1 will be described.

First, the contact glass 1 is placed on the upper surface of the scanner base 2. At this time, the opening 2a is covered with the contact glass 1. Next, Scanner Base 2
Scanner covers 3 and 3 from the side of scanner base 2
Attach to At this time, as shown in FIG. 4, the cover mounting projection 3a enters the inside of the scanner base 2 through the cover mounting hole 2b, and the contact glass 1 and the upper surface of the scanner base 2 are brought into contact with the cover mounting projection 3a and the scanner cover 3. Sandwiched between the upper surface of At the same time, the cover positioning projection 3b is positioned in the hole 2e, and the slit 3c is positioned on the side of the extension 2f.

Then, by sliding the scanner cover 3 toward the front side of the scanner base 2 (the direction C in FIG. 1), the extension 2f is fitted into the slit 3c as shown in FIG. Further, the scanner cover 3 is attached to the scanner base 2.
The contact glass 1 is fixed to the upper surface of the scanner base 2 as shown in FIG.

With this configuration, the contact glass 1 can be fixed at the same time as the attachment of the scanner cover 3, and the attachment of the contact glass 1 can be realized simply and at low cost.

FIG. 7 is a perspective view showing the configuration of the main part of the scanner cover in the apparatus according to the second embodiment of the present invention, and FIG. 8 is the configuration of the main part of the scanner base in the apparatus according to the second embodiment of the present invention. FIG. 5 is a perspective view, 5 is a scanner cover,
a indicates a cover mounting projection, and the cover mounting projection 5a
Is different from the cover mounting projection 3a of the first embodiment shown in FIG.
A plane parallel to the side surface of the scanner cover 3 is formed in a portion facing the side surface of the scanner cover 3. The scanner cover 5 of the scanner cover 3 of the first embodiment shown in FIG. 2 does not include the cover positioning protrusions 3b, and instead of the cover mounting protrusions 3a, provides the cover mounting protrusions 5a. A cover positioning protrusion 5 b is provided upright between the protrusion 5 a and the side surface of the scanner cover 5.
Here, a slit 5c corresponding to the slit 3c in the first embodiment shown in FIG. 2 is formed between the cover mounting projection 5a and the cover positioning projection 5b.

Reference numeral 6 denotes a scanner base, 6b denotes a cover mounting hole formed by continuously forming a hole 6c on the upper surface of the scanner base 6 and a hole 6d on the side surface, and 6e denotes an extending portion extending from the hole 6d. Show. The scanner base 6 is a cover positioning hole 2c in the scanner base 2 of the first embodiment shown in FIG.
And a cover mounting hole 6b is provided instead of the cover mounting hole 2b. Here, the extension 6e corresponds to the extension 2f in the first embodiment shown in FIG.

Then, the scanner covers 5 and 5 are attached to the scanner base 6 from the side of the scanner base 6.
At this time, the cover mounting projection 5a enters the inside of the scanner base 6 through the cover mounting hole 6b, and the contact glass 1 and the upper surface of the scanner base 6 are sandwiched between the cover mounting projection 5a and the upper surface of the scanner cover 5. Is done. At the same time, the slit 5c is located on the side of the extension 6e.

Further, as in the first embodiment, by sliding the scanner cover 5 along the side surface of the scanner base 6, the extension 6e is fitted into the slit 5c, and the scanner cover 5 is Fixed to 6,
At the same time, the contact glass 1 is fixed on the upper surface of the scanner base 6.

With such a configuration, the mounting structure of the scanner cover 5 and the contact glass 1 becomes simpler.

FIG. 9 is a perspective view showing the configuration of the main part of the scanner cover in the apparatus according to the third embodiment of the present invention, and FIG. 10 is the configuration of the main part of the scanner base in the apparatus according to the third embodiment of the present invention. It is a perspective view, 8 is a scanner cover, 8
a is an upright portion 8c standing upright on the scanner cover 8, an engaging portion 8d extending from an L-shaped portion to the tip end of the upright portion 8c, and an engaging portion 8d. A cover mounting projection formed by an extended portion 8e extending by a predetermined length in the longitudinal direction from the side of the portion 8d is shown. That is, the cover mounting projection 8a extends a predetermined length in the longitudinal direction from the bent tip portion of the cover mounting projection 5a to the cover mounting projection 5a of the second embodiment shown in FIG. Configuration. Reference numeral 8b denotes a cover positioning projection corresponding to the cover positioning projection 5b in the second embodiment shown in FIG. That is, the scanner cover 8 is provided with a cover mounting projection 8a instead of the cover mounting projection 5a in the scanner cover 5 of the second embodiment shown in FIG.

Reference numeral 9 denotes a scanner base, 9b denotes a cover mounting hole in which a hole 9c on the upper surface and a hole 9d on the side surface of the scanner base 9 are continuously formed, and the holes 9c and 9d are:
The width is formed so that the engaging portion 8d can be inserted. That is, the scanner base 9 has a configuration in which the cover positioning hole 2c is deleted from the scanner base 2 of the first embodiment shown in FIG. 2 and a cover mounting hole 9b is provided instead of the cover mounting hole 2b.

Then, the scanner covers 8 are attached to the scanner base 9 from the side of the scanner base 9.
At this time, the cover mounting projection 8a enters the inside of the scanner base 9 from the cover mounting hole 9b, and the contact glass 1 and the upper surface of the scanner base 9 are engaged with the engaging portion 8d of the cover mounting projection 8a and the upper surface of the scanner cover 8. Is sandwiched between.

Further, by sliding the scanner cover 8 in front of the scanner base 9 (in the direction C in FIG. 1), the scanner base 9 is moved between the extending portion 8e of the engaging portion 8d and the upper surface of the scanner cover 8. Are fitted, and a part of the side surface of the scanner cover 8 is sandwiched by the slit between the cover positioning projection 8b and the extending portion 8e. As a result, the scanner cover 8 is fixed to the scanner base 9, and at the same time, the contact glass 1 is fixed to the upper surface of the scanner base 9.

With this configuration, the mounting structure of the scanner cover 8 and the contact glass 1 becomes simpler.

[0028]

According to the present invention configured as described above, the following effects can be obtained.

According to the configuration of the first and second aspects, the mounting of the contact glass can be realized easily and at low cost.

According to the third and fourth aspects, the structure for mounting the contact glass can be further simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing components and configurations of an apparatus according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration inside a scanner cover in the apparatus according to the first embodiment of the present invention.

FIG. 3 is a side view showing a configuration of a cover mounting projection in the device according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a configuration near a cover mounting projection when a scanner cover is mounted on a scanner base.

FIG. 5 is a cross-sectional view showing a configuration near a cover positioning protrusion when a scanner cover is attached to a scanner base.

FIG. 6 is a perspective view showing an appearance when a scanner cover is attached to a scanner base.

FIG. 7 is a perspective view showing a configuration inside a scanner cover in the apparatus according to the second embodiment of the present invention.

FIG. 8 is a perspective view showing a configuration of a main part of a scanner base in an apparatus according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing a configuration inside a scanner cover in an apparatus according to a third embodiment of the present invention.

FIG. 10 is a perspective view showing a configuration of a main part of a scanner base in an apparatus according to a third embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Contact glass, 2, 6, 9 ... Scanner base, 2a ... Opening, 2b, 6b, 9b ... Cover mounting hole, 2c ... Cover positioning hole, 2d, 2e, 6c, 6
d, 9c, 9d: hole, 2f, 6e, 8e: extension, 3,
5, 8: scanner cover, 3a, 5a, 8a: cover mounting projection, 3b, 5b, 8b: cover positioning projection,
3c, 5c: slit, 8c: standing part, 8d: engaging part.

Claims (4)

[Claims] 1. A contact glass interposed between an optical reading means for reading an image of a document and the document and closely contacting the surface of the document, a substantially rectangular parallelepiped scanner base supporting the contact glass on an upper surface, A contact glass mounting device having a scanner cover for fixing the contact glass mounted on both sides of the scanner base and covering the opening formed in the scanner base to the scanner base. At one or more corners of the scanner base, cover mounting holes are continuously formed from the top surface to the side surface of the scanner base, and the scanner cover is mounted on both side portions of the scanner base. At this time, it enters the scanner base through the cover mounting hole and the contact Scan said scanner base and the contact glass mounting apparatus characterized by a substantially L-shaped cover mounting protrusions provided at one position or a plurality of locations in said scanner lid for holding the. 2. A cover positioning hole is continuously formed at one or a plurality of corners of the scanner base from an upper surface to a side surface of the scanner base, and a corner of the scanner base is formed on a side surface of the scanner base. Forming an extension such that the width of the hole on the side surface is smaller than the width of the hole on the upper surface at the boundary of the portion, and further, when the scanner cover is positioned on both sides of the scanner base, A cover positioning protrusion having a slit which is located on a side and has a slit which engages with the extending portion by sliding the scanner cover along a side surface of the scanner base is provided at one or more positions on the scanner cover. The contact glass mounting device according to claim 1, wherein: 3. The hole on the upper surface and the hole on the side surface forming the cover mounting hole, the hole on the side surface of the scanner base being wider than the width of the hole on the upper surface at the corner of the scanner base. Forming an extending portion such that the width of the portion is reduced; furthermore, when the scanner cover is positioned on both sides of the scanner base, the scanner cover is located on the side of the extending portion; The cover positioning protrusions, which are formed by sliding along the side surface of the scanner cover with the cover mounting protrusions by engaging with the extending portions, are provided at one or more positions on the scanner cover. The contact glass mounting device according to claim 1, wherein: 4. An extended portion is formed in a range from a bent portion to a tip portion of the cover mounting projection, and the scanner cover is attached to the scanner base with the scanner cover positioned on both sides of the scanner base. 2. The scanner base according to claim 1, wherein an edge of the scanner base, which forms the cover mounting hole, is inserted between a surface of the scanner cover and the extending portion when slid along a side surface. Contact glass mounting device.