JP4664042B2 - Hinge mounting portion and image reading apparatus having the same - Google Patents

Description

  The present invention relates to an image reading apparatus for reading an image of a document such as a scanner and a copying machine, and a blank used for a hinge mounting base of the image reading apparatus. In particular, a hinge mechanism having a different mounting structure is used as a single type of hinge mounting base. It can be shared.

  Generally, a document pressing device provided in an image forming apparatus such as a copying machine or an image reading device such as a scanner is attached to one end side so as to face a document placement surface (contact glass) of an image reading means. The hinge mechanism is arranged to be openable and closable, and can be opened and closed to a closed position that contacts and faces the document placement surface and an open position that pivots upward and retracts. Such a document holding device is a relatively lightweight plate-like shape on which a white sheet for pressing a document is affixed, automatic document feeding and discharging on a document placement surface, and further, Some of them are relatively heavy with automatic conveying means for performing reversal and the like. The image reading unit may read a thick original such as a book. In such a case, there is one in which the document pressing device can be supported in a state where it floats in parallel with the document placement surface in accordance with the thickness of the book of the document.

  From this point of view, the hinge mechanism that supports the document holding device so that it can be opened and closed can be attached to the frame of the main body of the device so that the opening / closing fulcrum can be moved up and down in order to handle documents with a certain thickness. There is a leg insertion type in which the leg of the hinge mechanism is inserted into the hinge mount so as to be movable up and down. In addition, in order to enable adjustment of the mounting position with a relatively simple configuration, there is a plane mounting type in which the hinge mounting base mounted on the frame of the apparatus main body can be mounted in a plane.

2. Description of the Related Art Conventionally, for example, when a document holding device is supported so as to be openable and closable using a leg insertion type hinge mechanism, the open end of the channel member is blocked by the frame on the frame that defines the rear end portion of the apparatus main body. The leg portion of the leg insertion type hinge mechanism is inserted into a support hole formed between the channel member and the frame (see, for example, Patent Document 1).
JP 2002-14496 A

  However, in the configuration described in Patent Document 1 described above, a document pressing apparatus using a leg insertion type hinge mechanism can be mounted on the apparatus main body. It is not possible to mount a document pressing device using the. For this reason, when mounting a document holding device using a plane mounting type hinge mechanism, a hinge mounting base that can be mounted on a plane is separately attached to the frame of the apparatus main body instead of the support hole formed by the channel member and the frame. It was necessary to fix. Therefore, it is necessary to prepare multiple types of hinge mounts in order to support the hinge mechanism with different mounting structure as an option so that customers can consider the performance and price, inventory management, cost, There were also inconveniences in terms of standardization.

The present invention has been made in order to solve the above-described problems, and provides a hinge mounting base in which a hinge mechanism having a different mounting structure can be shared by one type of hinge mounting base, and an image reading apparatus including the same. The purpose is to do.

In order to achieve the above object, according to the first aspect of the present invention, in the hinge mounting base for mounting a hinge mechanism on the main body of the image reading apparatus, the hinge mechanism that supports the document pressing device so as to be openable and closable with respect to the main body of the image reading apparatus It has a hinge placement surface on which a hinge mechanism is placed, an attachment portion attached to the main body of the image reading device, and a holding portion that holds a part of the hinge mechanism, and is placed on the hinge placement surface. It is possible to attach the leg insertion type hinge mechanism as the hinge mechanism to the main body of the image reading apparatus, and the leg insertion type hinge mechanism is attached to the hinge mounting surface instead of the leg insertion type hinge mechanism. It is possible to attach a plane mounting type hinge mechanism as the hinge mechanism to the main body of the image reading apparatus, and the leg part of the leg part insertion type hinge mechanism is inserted. A leg portion insertion opening to a fixing portion for fixing the flat mounting type hinge mechanism is characterized in that provided in the hinge mounting surface.

The invention according to claim 2 is characterized in that one metal plate is integrally formed by bending.

According to a third aspect of the present invention, a body portion for forming a space for arranging the leg portion is provided, the first side surface and the second side surface facing each other, and the first side surface and the second side surface are provided. A back surface connected to each of the first side surface and the second side surface is provided on the body, and a part of the first side surface, a part of the second side surface, and one of the back surface At least one of the parts is bent toward the space of the body part to form the holding part.

The invention according to claim 4 is characterized in that a part of the hinge mounting surface is bent toward the space of the body part to form the holding part.

According to a fifth aspect of the present invention, a second attachment portion that is attached to the main body of the image reading apparatus is provided separately from the attachment portion, and the first side surface and the first attachment portion are arranged in the longitudinal direction of the leg portion. Two side surfaces are extended to form the second attachment portion.
A sixth aspect of the present invention is an image reading apparatus including the hinge mounting portion according to any one of the first to fifth aspects.

  According to the configuration of the first aspect of the present invention, the hinge mounting surface, the fixing portion for fixing the plane mounting type hinge mechanism, and the leg portion of the leg insertion type hinge mechanism are inserted into the hinge mounting base. And a leg holding area for holding the leg. For this reason, it can be shared as both a plane mounting type and a leg insertion type as a hinge mechanism. Accordingly, it is possible to attach the document holding device having a hinge mechanism with a different attachment structure to a common hinge mount, and the selection range of optional devices is expanded, and the hinge mount can be standardized.

  According to the configuration of the invention described in claim 2, since the hinge mounting base is integrally formed by bending from one metal plate, no separate member such as a welding member or a caulking member is required. No need for welding or caulking work. Therefore, workability is good and the cost is low.

  According to the configuration of the invention described in claim 3, the hinge mounting base includes a hinge placement surface on the upper surface of the body portion having a U-shaped cross section, and a part of both side surfaces and a part of the back surface forming the body portion. Are folded inwardly of the body part to form a holding piece that divides the leg holding region. Therefore, the hinge placement surface and the leg holding area can be formed very easily, and the configuration is extremely simple.

  According to the configuration of the fourth aspect of the present invention, a part of the hinge mounting surface is bent inside the trunk portion to form the holding piece that divides the leg holding region, so that the hinge is mounted from the hinge mounting surface side. In addition to being able to guide the leg of the mechanism to the leg holding area easily and effectively, the leg of the hinge mechanism can be reliably held.

  According to the configuration of the invention of claim 5, since the side surfaces on both sides forming the body portion are extended and bent outward, and the mounting portion is configured, the mounting portion can be formed very easily, Its configuration is extremely simple.

(First embodiment)
A specific embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a schematic perspective view showing the overall configuration of the image reading apparatus according to the first embodiment of the present invention, and FIG. 2 is a side view of the image reading apparatus shown in FIG.

  In FIG. 1, an image reading apparatus 1 includes an image reading unit 2 that reads image information of a document, an image information storage unit (not shown) that stores image information read by the image reading unit 2, and a document of the image reading unit 2. A document pressing device 4 disposed so as to be openable and closable by a hinge mechanism 3 attached to one end side so as to face the mounting surface 21, for example, contact glass, and a hinge attachment for attaching the hinge mechanism 3 to the frame 11 of the apparatus main body. A stand 5 is provided. In addition, a ROM that stores a calculation unit for performing a main calculation function and a program for operation control, a temporary storage of data as a work area of each program, and image data of a document obtained by the image reading unit 2 Control means (not shown) configured by a microcomputer or the like with a built-in storage unit such as a RAM for temporarily storing the memory are provided.

  As is well known, the image reading means 2 irradiates a document placed on the document placement surface 21 with light from an exposure lamp, and passes the reflected light through a reflecting mirror to a photoelectric conversion unit comprising a CCD sensor or the like. By guiding, the image information of the document is read and stored in, for example, the image information storage means.

  As described above, the hinge mechanism 3 is a leg plug-in type in which the leg 31 as shown in FIG. 3 is inserted into the hinge mount 5 attached to the frame 11 of the apparatus main body so as to be movable up and down. As shown in FIG. 4, there is a plane mounting type that can be mounted in a plane, and any of them can be used in the present invention. FIG. 3 is a perspective view showing an example of a leg plug-in type hinge mechanism 3a, and FIG. 4 is a perspective view showing an example of a plane-mounted hinge mechanism 3b.

  The leg insertion type hinge mechanism 3a shown in FIG. 3 includes a leg portion 31 inserted into the hinge mount 5, a turning support frame 33 having a mounting portion 32 to which the document pressing device 4 is attached, and a turning support frame. In a state in which the document pressing device 4 is mounted on 33, a closed position that is in contact with the document placement surface and a pivot shaft 34 that is supported to be openable and closable at an open position that pivots upward and retracts.

  Also, the plane mounting type hinge mechanism 3b shown in FIG. 4 includes a bottom mounting surface 36 that is mounted on the hinge mounting base 5, a swivel support frame 38 having a mounting portion 37 on which the document pressing device 4 is mounted, and a swivel support frame. 38 includes a closed position that is in contact with the original placement surface in a state where the original pressing device 4 is mounted, and a pivot shaft 39 that is supported to be openable and closable at an open position that pivots upward and retracts.

  Further, the document pressing device 4 is a relatively lightweight plate-like shape to which a white sheet 41 for pressing a document is attached, or automatically feeds and discharges a document onto the document placing surface 21. May be any of those that are relatively heavy and equipped with automatic conveying means for reversing the document.

  Thus, according to the present invention, the hinge mounting base 5 is configured such that the hinge mechanism 3 (3a, 3b) can be attached to either a flat surface mounting type or a leg insertion type. Hereinafter, description will be made based on FIGS. 5 and 6 and FIGS. 1 to 4. FIG. 5 is a perspective view of the hinge mount 5 according to one embodiment of the present invention, and FIG. 6 is a perspective view of the hinge mount 5 shown in FIG.

  In the present embodiment, the hinge mount 5 is formed integrally with, for example, a single metal plate by a bending process such as a press process, and is positioned on the upper surface of the body part 6 having a U-shaped cross section. A hinge mounting surface 7, a mounting portion 8 for mounting the hinge mount 5 to the frame 11, a leg holding region 9 for holding the leg portion 31 of the leg insertion type hinge mechanism 3a, and a plane mounting type And a fixing portion 10 for fixing the hinge mechanism 3b.

  The hinge mounting surface 7 functions as a leg insertion port 71 for inserting the leg 31 of the leg insertion type hinge mechanism 3a and a fixing part 10 for fixing the plane mounting type hinge mechanism 3b. For example, a plurality of tapped screw holes 101 are formed. The hinge mounting surface 7 is provided with a pin mounting portion 72 that serves as a mounting reference when the plane mounting type hinge mechanism 3b is fixed.

  Further, the mounting portion 8 is formed by bending outward from the tip portions of the side surfaces 61 and 62 on both sides forming the body portion 6 in order to mount the hinge mounting base 5 to the frame 11 of the apparatus main body. The attachment portion 8 is formed with a long hole 81 for inserting a bolt for attachment to the frame 11 of the apparatus main body, a round hole 82, a square hole 83 for hooking to a side plate in consideration of assembly. Yes.

  The leg holding region 9 includes holding pieces 611, 621, 631 formed by bending a part of the side surfaces 61, 62 on both sides forming the body part 6 and a part of the back surface 63 to the inside of the body part 6. It is formed by a region partitioned by 632. Further, in the present embodiment, a holding piece 711 is formed by bending a part of the hinge placement surface 7 on the side of the leg insertion port 71 toward the inside of the trunk portion 6. By this holding piece 711, the leg 31 of the leg insertion type hinge mechanism 3 a can be easily and effectively guided from the hinge mounting surface 7 side to the leg holding area 9. Since the leg part 31 of the insertion-type hinge mechanism 3a can be hold | maintained reliably, it is convenient.

  Next, a case where the leg insertion type hinge mechanism 3a shown in FIG. 3 is attached to the hinge mount 5 shown in FIG. 5 as the hinge mechanism 3 will be described with reference to FIGS. 7 is a perspective view showing a state where the leg insertion type hinge mechanism 3a shown in FIG. 3 is attached to the hinge mount 5 shown in FIG. 5, and FIG. 8 is a perspective view of FIG. 7 viewed from the bottom. is there.

  First, the hinge mount 5 is attached to the frame 11 of the apparatus main body by inserting bolts into the long holes 81 and the round holes 82 of the attachment portion 8. Thereafter, the leg portion 31 of the leg insertion type hinge mechanism 3a shown in FIG. 3 is inserted into the leg insertion port 71 of the hinge mounting surface 7 from the upper part of the hinge mounting base 5 shown in FIG. 7 and 8, the leg 31 is mounted so as to be held by a leg holding region 9 formed inside the trunk 6 of the hinge mount 5. As shown in FIG. In this case, even if the document pressing device 4 is attached in advance to the leg insertion type hinge mechanism 3a, or after the leg insertion type hinge mechanism 3a is attached to the hinge mounting base 5, the document pressing device 4 is attached. May be attached.

  Next, a case where the plane mounting type hinge mechanism 3b shown in FIG. 4 is mounted on the hinge mounting base 5 as the hinge mechanism 3 will be described with reference to FIGS. 9 is a side view showing a state in which the plane mounting type hinge mechanism 3b shown in FIG. 4 is attached to the hinge mounting base 5 shown in FIG. 5, and FIG. 10 is a perspective view of FIG. is there.

  In this case as well, as in the case of the leg insertion type hinge mechanism 3a described above, first, the hinge mounting base 5 is inserted into the frame 11 of the apparatus main body, and bolts are inserted into the long holes 81 and the round holes 82 of the mounting portion 8. Install. Thereafter, the bottom mounting surface 35 of the plane mounting type hinge mechanism 3b shown in FIG. 4 is placed on the hinge mounting surface 7 and the bottom mounting surface 35 is mounted in a state where the swing support frame 38 of the hinge mechanism 3b is swung open. Bolts are inserted through the holes 361 and screwed into the screw holes 101 of the fixing portion 10 to be mounted. Thereafter, the document pressing device 4 is attached to the mounting portion 37 of the hinge mounting base. In this case as well, it is needless to say that the hinge mechanism 3b may be attached to the hinge mounting base 5 in a state where the document pressing device 4 is previously attached to the leg insertion type hinge mechanism 3b.

  Next, the configuration of a material (hereinafter referred to as “blank”) made of a metal plate, which is a member for forming the hinge mount 5 shown in FIG. 5, will be described with reference to FIGS. 11, 5, and 6. . FIG. 11 is a development view of the blank P used for the hinge mount 5 shown in FIG. In FIG. 11, the portions denoted by the same reference numerals as those in FIGS. 5 and 6 described above indicate the same components, and thus detailed description thereof is omitted here.

  The blank P is made of, for example, a single metal plate such as an iron plate, a stainless steel plate, an aluminum plate, and the like, and a hinge placement surface member 7P that forms a hinge placement surface 7 having folds A1 and B1 on two opposite sides. In the center. Side members 61P and 62P forming the side surfaces 61 and 62 of the trunk portion 6 are connected to both sides of the hinge placement surface member 7P via fold lines A1 and B1, respectively. The back members 63P and 64P forming the back surfaces 63 and 64 of the trunk portion 6 are connected to one end of the side members 61P and 62P via the folds A2 and B2, respectively, and the folds A3 and B3 are connected to the other ends of the side members 61P and 62P. The attachment portion members 8P forming the attachment portions 8 are connected to each other. A holding piece that divides the leg holding region 9 that holds the leg 31 of the hinge mechanism 3a through the fold A4 on the opposite side of the side member 61P of the back member 63P disposed inside the back member 63P, 64P. The holding piece member 631P forming 631 is connected. Further, the insertion port notch 71P for forming the leg insertion port 71 is formed in the hinge placement surface member 7P. In addition, a holding piece cut C and folds A8, A5, and B5 are provided in a part of the back member 63P and the side members 61P and 62P disposed inside the back members 63P and 64P, and the inside is folded inside the trunk portion 6. Thus, holding piece members 632P, 611P, and 621P that form holding pieces 632, 611, and 621 that define the leg holding area 9 are formed.

  Further, a holding piece member 711P that forms a holding piece 711 that partitions the leg holding area 9 is connected to the insertion port cutout 71P formed in the hinge placement surface member 7P via a fold A6. In addition, in this embodiment, one of the back members 63P and 64P, the attachment member 72P that forms the attachment portion 72 is connected to the back member 63P disposed inside via the crease A7.

  When the blank P made of one metal plate thus configured is bent using a press machine or the like, the hinge mounting base 5 as shown in FIG. 5 is replaced with another member such as a welding member or a caulking member. No member is required, and welding and caulking work are not required, and the unit can be formed extremely easily.

  According to the present embodiment having the above-described configuration, the hinge mounting base 5 includes the hinge mounting surface 7, the fixing portion 10 that fixes the plane mounting type hinge mechanism 3 b, and the leg insertion type hinge mechanism 3 a. A leg insertion slot 71 for inserting the leg 31 and a leg holding area 9 for holding the leg 31 are provided. For this reason, the hinge mechanism 3 can be commonly used for both the plane mounting type and the leg insertion type. Accordingly, it is possible to attach the document pressing device 4 having the hinge mechanism 3 having a different mounting structure to the common hinge mounting base 5, thereby expanding the selection range of optional devices and standardizing the hinge mounting base 5.

  Further, since the hinge mount 5 is integrally formed by bending from a single metal plate, no separate member such as a welding member or a caulking member is required, and no welding or caulking work is required. Therefore, workability is good and the cost is low.

  Further, the hinge mount 5 includes a hinge placement surface 7 on the upper surface of the body 6 having a U-shaped cross section, and a part of both side surfaces 61 and 62 and a part of the rear surfaces 63 and 64 forming the body 6. Are folded inwardly of the body portion 6 to form holding pieces 611, 621, 631, 632 for partitioning the leg holding region 9. Accordingly, the hinge placement surface 7 and the leg holding region 9 can be formed very easily, and the configuration is extremely simple.

  In addition, a part of the hinge placement surface 7 is bent inside the trunk portion 6 to form a holding piece 711 that divides the leg holding region 9, so that the leg insertion type 7 side can be inserted from the hinge placement surface 7 side. The leg part 31 of the hinge mechanism 3a can be guided easily and effectively to the leg part holding region 9, and the leg part 31 of the leg part insertion type hinge mechanism 3a can be securely held.

  Further, since the side surfaces 61 and 62 on both sides forming the body portion 6 are extended and bent outward to constitute the attachment portion 8, the attachment portion 8 can be formed very easily and the configuration thereof is extremely high. Simple.

  In addition, the blank P that forms the hinge mounting base 5 for mounting the hinge mechanisms 3a and 3b having different mounting structures is constituted by a single metal plate, so that the hinge mounting can be performed very easily by folding the fold as a reference. The stand 5 can be manufactured.

  Further, since the holding piece member 711P that forms the holding piece 711 that defines the leg holding area 9 is connected to the notch 71P for the insertion port formed in the mounting surface member 7P via the fold line, the simple configuration Thus, the leg holding region 9 can be formed continuously from the hinge placement surface 7 side.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 12 is a schematic perspective view showing an overall configuration of a copying machine which is an image forming apparatus including the image reading apparatus according to the present embodiment, and FIG. 13 is a perspective view of a hinge mount 5 according to another embodiment of the present invention. 14 and 14 are developed views of blanks used in the hinge mount 5 shown in FIG. In FIGS. 12 to 14, portions denoted by the same reference numerals as those in FIGS. 1 to 11 described above are substantially the same, and thus detailed description thereof is omitted here. Hereinafter, the difference from the above-described embodiment will be mainly described.

  As shown in FIG. 12, in this embodiment, the image reading apparatus 1 is provided on the upper part of the apparatus main body 25 of the copying machine 20, which is an image forming apparatus. As is well known, the apparatus main body 25 includes an image forming unit, a fixing unit, a paper feeding unit, a conveying unit, and the like (not shown).

  Thus, according to the present invention, as shown in FIG. 13, the hinge mount 5 is formed integrally with a single metal plate by bending such as pressing so as to be attached to the upper part of the apparatus body 25. The attachment portion 80 is formed by bending outward from the lower end portion of the body portion 6 having a U-shaped cross section. The attachment portion 80 is formed with a round hole 82 for inserting a bolt or the like for attachment to the frame 26 of the apparatus main body. Therefore, the hinge mount 5 can be easily attached to the frame 26 of the apparatus main body 25.

  In this case, similarly to the above-described embodiment, the attachment portion 8 is formed by bending outward from the tip portions of the side surfaces 61 and 62 on both sides forming the body portion 6, so that the side surface or the upper surface of the frame of the apparatus main body is formed. It can be attached to either of them, which is convenient. Moreover, if it attaches to the flame | frame of an apparatus main body using both the attachment parts 8 and 80, it can attach more firmly and is convenient.

  The blank P for forming the hinge mount 5 shown in FIG. 13 can be composed of a single metal plate as shown in FIG. 14 as in the above-described embodiment. That is, the attachment member 80P that forms the attachment portion 80 is connected to the opposite side of the hinge placement surface member 7P of the side members 61P and 62P that form the side surfaces 61 and 62 via the folds A10 and B10, When the attaching member 80P is bent, it may be bent outward at a substantially right angle.

  According to the present embodiment having the above-described configuration, it is possible to attach the document pressing device 4 having the hinge mechanism 3 having a different attachment structure to the common hinge mount 5 with the same operation as the above-described embodiment, and is optional. In addition to expanding the selection range of the apparatus, the hinge mount 5 can be standardized.

  Further, since the hinge mounting base 5 for mounting the hinge mechanism 3 having a different mounting structure is formed by a single metal plate, the hinge mounting base 5 can be manufactured very easily by bending the crease. it can.

  Each embodiment described above is a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention.

  In the first embodiment described above, the screw hole 101 is provided as the fixing portion 10, but a through hole is provided instead of this, and the plane mounting type hinge mechanism 3b is fastened with bolts, nuts, flat washers, spring washers, and the like. Of course, it may be fixed with a tool.

  Moreover, in 2nd Embodiment mentioned above, the attachment part 8 by the side of the trunk | drum 6 among the attaching parts 8 and 80 for attaching the hinge mounting base 5 to an apparatus main body is abbreviate | omitted, and only on the upper surface side of an apparatus main body. Of course, it is good also as the hinge mounting base 5 to attach.

  As an application example of the present invention, there is an image reading apparatus provided with a hinge mounting base for mounting a hinge mechanism for supporting the document pressing apparatus to the apparatus main body.

1 is a schematic perspective view illustrating an overall configuration of an image reading apparatus according to an embodiment of the present invention. It is a side view of the image reading apparatus shown in FIG. It is a perspective view which shows an example of the leg part insertion-type hinge mechanism. It is a perspective view which shows an example of the hinge mechanism 3 of a plane attachment type. It is a perspective view of the hinge mounting base 5 which concerns on one Embodiment of this invention. It is the perspective view which looked at the hinge mounting base 5 shown in FIG. 5 from the bottom face. It is a perspective view which shows the state which attached the leg part insertion type hinge mechanism 3 shown in FIG. 3 to the hinge mounting base 5 shown in FIG. It is the perspective view which looked at FIG. 7 from the bottom face. It is a side view which shows the state which attached the hinge mechanism 3 of the plane mounting type shown in FIG. 4 to the hinge mounting base 5 shown in FIG. It is the perspective view which looked at FIG. 9 from diagonally right above. It is an expanded view of the blank used for the hinge mounting base 5 shown in FIG. 1 is a schematic perspective view illustrating an overall configuration of an image forming apparatus including an image reading apparatus according to an embodiment. It is a perspective view of the hinge mounting base 5 which concerns on other embodiment of this invention. It is an expanded view of the blank used for the hinge mounting base 5 shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Image reading device, 2 ... Image reading means 3, 3a, 3b ... Hinge mechanism, 4 ... Document pressing device, 5 ... Hinge mounting base, 6 ... Body part, 7 ... Hinge mounting surface, 8, 80 ... Attachment 9, leg holding area, 10, fixing part, 11, 26, frame, 21, document placement surface, 25, apparatus main body, 31, leg part, 61, 62, side face, 63, 64, back face, 71 ... Leg insertion port, 611, 621, 631, 632, 711 ... Holding piece, 632 ... Notch

Claims (6)

  In a hinge mounting base for attaching a hinge mechanism for supporting the document pressing device to the image reading device main body so as to be opened and closed, to the image reading device main body,
  A hinge mounting surface on which the hinge mechanism is mounted; an attachment portion that is attached to a main body of the image reading device; and a holding portion that holds a part of the hinge mechanism.
  It is possible to attach a leg insertion hinge mechanism as the hinge mechanism mounted on the hinge placement surface to the main body of the image reading device,
  It is possible to attach a plane mounting type hinge mechanism as the hinge mechanism attached to the hinge placement surface to the main body of the image reading apparatus instead of the leg plug type hinge mechanism.
  In addition, a leg insertion port into which a leg of the leg plug-in type hinge mechanism is inserted and a fixing part for fixing the plane mounting type hinge mechanism are provided on the hinge mounting surface.
  A hinge mounting base. The hinge mounting base according to claim 1, wherein one metal plate is integrally formed by bending . Comprising a body part that forms a space for placing the leg part;
A first side surface and a second side surface facing each other, and a back surface provided between the first side surface and the second side surface and connected to each of the first side surface and the second side surface are provided on the body portion. thing,
In addition, at least one of a part of the first side surface, a part of the second side surface, and a part of the back surface is bent toward the space of the body part to form the holding part. The hinge mounting base according to claim 1 or 2 . A part of the hinge placement surface is bent toward the space of the body part to form the holding part.
The hinge mounting base according to claim 3, wherein: A second attachment portion that is attached to the main body of the image reading apparatus is provided separately from the attachment portion.
The hinge mounting according to claim 3 or 4, wherein the first side surface and the second side surface are extended in the longitudinal direction of the leg portion to form the second mounting portion. Stand.   An image reading apparatus comprising the hinge mount according to claim 1.

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