JP2008224704A - Original pressing plate opening/closing device and office equipment equipped with original pressing plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an original pressing plate opening/closing device whose leg part is surely and smoothly moved as an original pressing plate opening/closing device having a leg part inserted to be slidable in an up-and-down direction in a mount hole provided in an up-and-down direction on an equipment main body. <P>SOLUTION: The leg part 3 of an original pressing plate opening/closing device main body 2 is slidably inserted in the mount hole 15 provided in the up-and-down direction on the equipment main body of the office equipment having an original pressing plate, and the original pressing plate is attached to the original pressing plate opening/closing device main body 2, whereby the original pressing plate is supported to be openable/closable to the equipment main body. Then, a spherical sliding member 4 slidably press-contacting with the inner wall of the mount hole 15 is rotatably provided on the leg part 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a manuscript crimping plate opening / closing device suitable for office machines having a manuscript crimping plate such as a copying machine, a printing machine, a facsimile machine, a scanner, and the like, and an office machine equipped with a manuscript crimping plate.

  A document crimping plate is attached to an apparatus main body of an office machine such as a copying machine, a printing machine, a facsimile machine, a scanner, or the like via a document crimping plate opening / closing device at the rear upper surface of the device body. The document crimping plate opening / closing device is a kind of hinge mechanism. The document crimping plate is pivotally supported around a hinge axis so that the document crimping plate can be crimped onto the contact glass on the upper surface of the apparatus body. The contact glass can be exposed. In order to set the document on the contact glass, the contact glass is exposed by rotating the document crimping plate upward (moving the document crimping plate away from the contact glass (sometimes referred to as opening direction)). After the original is placed on the contact glass, the original cover is rotated and closed in the opposite direction, and the original is set on the contact glass by pressing the original cover onto the contact glass. can do.

In such a document pressure plate opening / closing device, the document pressure plate opening / closing device moves in the vertical direction of the device body in order to stably bond a thick document such as a book to the upper surface of the device body. A document crimping plate opening and closing device that can be used is known (for example, see Patent Document 1). The document crimping plate opening / closing device includes a leg portion extending in the height direction of the device main body, and the leg crimping plate opening / closing device is slidably inserted into a mounting hole provided in the device body. It is attached to be movable in the height direction.
Japanese Patent No. 3262457

  In the document crimping plate opening / closing device described in Patent Document 1, when a document such as a book is thick, if the document crimping plate is closed after setting the document on the contact glass, the document crimping plate opening / closing device Can move over the device body and cover the contact glass by touching the document in a state where the original pressure plate is parallel to the contact glass. Can be stably pressure-bonded to the upper surface of the apparatus main body, and it is possible to prevent as much as possible that external light enters the apparatus main body and prevents exposure.

  By the way, a columnar roller member is rotatably provided on a leg portion of the document crimping plate opening / closing device described in Patent Document 1, and the roller member is moved when the leg portion is moved in the mounting hole. By rolling the inner wall of the mounting hole, the document crimping plate opening / closing device (leg part) can be moved smoothly. However, with such a configuration, there is a problem in that the movement of the document crimping plate opening / closing device (leg part) cannot be performed smoothly because the roller member does not rotate unless the roller member moves in the direction in which the roller member rolls. It was. Furthermore, if the roller member is bent and attached to the leg portion, or if the roller member is misaligned during use, the roller member will not roll during the movement of the leg portion. The movement of the (leg part) could not be performed smoothly, and on the contrary, the movement could be difficult.

  The present invention has been made to solve the above-described problems, and has an object of having a mounting hole provided in the apparatus body in the vertical direction and inserted into the mounting hole so as to be slidable in the vertical direction. An object of the present invention is to provide a manuscript crimping plate opening / closing device and a manufac- turing device provided with a manuscript crimping plate that can reliably and smoothly move the leg portion.

  In order to achieve the above object, the document crimping plate opening / closing apparatus according to the present invention is configured such that the legs of the document crimping plate opening / closing apparatus main body slide in the mounting holes provided in the vertical direction of the apparatus body of the office equipment having the document crimping plate. A document crimping plate opening / closing device that is inserted in the document crimping plate opening / closing device body and that supports the document crimping plate to be openable / closable with respect to the device body. A spherical sliding member that is in pressure contact with the inner wall of the mounting hole is rotatably provided.

  According to this invention, the spherical sliding member that is in sliding contact with the inner wall of the mounting hole is rotatably provided in the leg portion, so that the leg portion inserted into the mounting hole moves in the vertical direction in the mounting hole. Even so, since the spherical sliding member in contact with the inner wall of the mounting hole rotates, the leg portion can be moved smoothly and reliably.

  In the document crimping plate opening and closing apparatus according to the present invention, it is preferable that the sliding member is provided with a position shifted vertically in a front portion and a rear portion of the leg portion. In the document pressing plate opening and closing apparatus according to the present invention, it is preferable that the leg portion is provided with an engaging means having an engaging convex portion that engages with an engaging concave portion provided in the attachment hole. In the document crimping plate opening and closing apparatus according to the present invention, it is preferable that the engaging means has a releasing means for releasing the engagement state between the engaging convex part and the engaging concave part.

  In the document crimping plate opening and closing apparatus according to the present invention, the engaging convex portion can be projected and retracted on both side surfaces of the leg portion and is urged in a protruding direction, and the releasing means is provided on a front surface of the leg portion. There is an extraction protrusion that can be retracted and is biased in the protruding direction and moved in the immersion direction, and moves the engaging protrusion in the immersion direction, and the leg portion on the rear side. When it is tilted down, it is preferable that the extraction protrusion comes into contact with the wall surface forming the attachment hole and moves in the immersion direction so that the leg can be extracted from the attachment hole. In the document crimping plate opening and closing device according to the present invention, the two engaging convex portions are respectively provided on a pair of engaging convex members supported by the leg portions so as to be movable in the width direction. The mating convex member is provided on the front side of the leg portion, and a biasing member that contacts each other and biases the engaging convex portion in a direction protruding from the leg portion, and the engaging convex portion is the leg portion. Engaging protrusions that are spaced apart from each other when protruding from the protrusions and abut or approach each other when the engaging protrusions are immersed in the legs. It is provided on the extraction convex member supported so as to be movable in the front-rear direction, and the engagement operation concave portions are engaged with the engagement operation concave portions of the engagement convex member on the rear surface of the extraction convex member. When separated, the extraction convex portion protrudes from the leg portion, and the extraction convex portion is inserted in the leg portion. When is dynamic, it is preferable that engagement operation convex portions the two engagement operation recess the engaging protrusion contact with or close to each other retracts to the leg portion.

  In order to achieve the above object, an office machine provided with the original cover according to the present invention includes the original cover opening / closing device according to the present invention. According to the present invention, as described above, the spherical sliding member that is in contact with the inner wall of the mounting hole rotates regardless of how the leg portion inserted into the mounting hole moves in the vertical direction in the mounting hole. Therefore, the leg can be moved smoothly and reliably.

  As described above, according to the office equipment provided with the document crimping plate opening and closing device and the document crimping plate according to the present invention, since the spherical sliding member slidably contacting the inner wall of the mounting hole is rotatably provided on the leg portion, No matter how the leg inserted in the mounting hole moves in the vertical direction in the mounting hole, the spherical sliding member in contact with the inner wall of the mounting hole rotates, so that the movement of the leg is surely smooth. Can be done.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A document crimping plate opening / closing device and an office machine equipped with a document crimping plate according to the present invention will be described below in detail with reference to the accompanying drawings.

  1 to 5B are views showing an example of a document crimping plate opening / closing device according to the present invention. As shown in FIGS. 1 to 3, the document crimping plate opening / closing device according to the present invention is configured to pivotally attach a document crimping plate 12 to a rear end portion of an apparatus main body 11 of an office device 10. The office equipment 10 is not particularly limited, and examples thereof include a copying machine, a printing machine, a facsimile machine, a scanner, and the like, and a copying machine is particularly preferable, but will be described without particular limitation.

  As shown in FIGS. 1 to 5B, the document crimping plate opening / closing device 1 according to the present invention is attached to the attachment hole 15 provided in the device body 11 of the office equipment 10 having the document crimping plate 12. A leg 3 is slidably inserted, and a document crimping plate 12 is attached to the document crimping plate opening / closing device body 2 to support the document crimping plate 12 with respect to the apparatus body 11 so as to be opened and closed. The part 3 is characterized in that a spherical sliding member 4 that is in pressure contact with the inner wall of the mounting hole 15 is rotatably provided.

  For example, a contact glass (not shown) is provided on the upper surface of the apparatus body 11, and a document is brought into close contact with the contact glass by the document crimping plate 12, and the contact glass is covered with the document crimping plate 12. ing. Mounting holes 15 extending in the vertical direction (sometimes referred to as the height direction) are provided at two locations near the rear end of the upper surface of the device body 11. The attachment hole 15 has a rectangular cross section and is formed in a concave shape. Engaging recesses 16 extending in the height direction are provided on both side surfaces of the mounting hole 15. The length of the engaging recess 16 in the height direction is not particularly limited, and is arbitrarily set.

  The document crimping plate opening / closing device main body 2 has a base member 21 attached to the device main body 11 of the office equipment 10 via the leg 3, and is pivotally supported by the base member 21 and is also supported on the document crimping plate 12. A support member 22 to be attached and an elastic member 23 that is provided between the base member 21 and the support member 22 and rotates and biases the original cover 12 in the opening direction. The apparatus main body is rotated by rotating the original cover 12. 11 is formed in a closed state in which the upper surface of 11 is covered with the original cover 12 and an open state in which the upper surface is exposed.

  As shown in FIGS. 1 to 5B, 10A, and 10B, the base member 21 is, for example, in a direction substantially orthogonal to the bottom plate 21a from the both sides of the bottom plate 21a having the leg portions 3 and the bottom plate 21a. Both side plates 21b extending are provided.

  The bottom plate 21a is formed in a substantially rectangular shape. The lower surface of the bottom plate 21 a is provided with a leg portion 3 that extends downward from the lower surface. The leg portion 3 is inserted into the attachment hole 15 of the device main body 11, and the document crimping plate opening / closing device main body 2 is attached to the device main body 11. . The side plate 21b is provided with a shaft hole 21c through which the hinge pin 24 is inserted. A pressure receiving pin hole 21d through which the pressure receiving pin 25 is inserted is provided in front of the shaft hole 21c of the side plate 21b. The pressure receiving pin 25 is a pressure receiving member with which the elastic member 23 abuts via the cam slider 26. The pressure receiving member is not limited to a pin such as the pressure receiving pin 25, but may be a roller, for example, a pressure receiving roller.

  The support member 22 includes, for example, an upper plate 22a that is a top plate, both side plates 22b that are bent approximately 90 ° downward from the both side end portions of the upper plate 22a, respectively, and the front end portion of the upper plate 22a. Is formed of an elastic member support portion 22c that is bent approximately 90 ° downward with respect to the upper plate 22a.

  An attachment piece 22d that is attached to the rear end side of the document pressing plate 12 with a screw or the like is provided at a substantially central portion of the both side plates 22b. A shaft insertion hole (not shown) is provided at one end (front end) of the side plates 22b. The shaft insertion holes of the side plates 22b and the shaft holes 21c of the base member 21 are aligned, and the hinge pins 24 are inserted into the holes 21c through washers or the like, so that the support member 22 attaches the hinge pins 24 to the base member 21. The shaft is pivotally connected.

  The elastic member 23 urges the original cover 12 to rotate in the opening direction. In the present invention, the opening direction refers to a direction in which the original cover 12 is separated from the contact glass when the original cover 12 is rotated. In the present invention, the closing direction refers to a direction in which the original cover 12 approaches the contact glass when the original cover 12 is rotated in a direction opposite to the opening direction.

  Although the elastic member 23 is not specifically limited, For example, it is the compression coil spring 23a. The compression coil spring 23 a is accommodated in the support member 22 and is elastically provided between the elastic member support portion 22 c and the pressure receiving pin 25. One end portion of the compression coil spring 23a is supported by the elastic member support portion 22c, and the other end portion of the compression coil spring 23a is accommodated in, for example, a cam slider 26 formed in a rectangular bottomed cylindrical shape, The pressure receiving pin 25 is in contact with the cam slider 26. The number of the compression coil springs 23a is not particularly limited, and may be one or two or more in the illustrated example, and urges the cam slider 26 to contact the pressure receiving pin 25.

  The leg 3 provided on the base member 21 is formed in a substantially rectangular shape in plan view. It is preferable that the width of the leg portion 3 is formed to be slightly longer than the width of the mounting hole 15 where the engagement recess 16 is not provided. Further, the length of the leg portion 3 in the front-rear direction is slightly longer than the length of the attachment hole 15 in the front-rear direction (longer than the difference between the width of the leg portion 3 and the width of the attachment hole 15). preferable. Moreover, the length (length in the longitudinal direction) of the leg portion 3 is not particularly limited, but is preferably formed with a dimension shorter than the length in the longitudinal direction (depth direction) of the mounting hole 15. It is preferable that the lower part of the front surface of the leg portion 3 is inclined and formed as a tapered surface 3a.

  A first sliding member mounting hole 31 extending in the front-rear direction and penetrating through the front surface and the rear surface is provided slightly above the center portion in the height direction of the leg portion 3. The first sliding member mounting hole 31 includes a sliding member accommodating portion 31a disposed on the front surface side and a screw portion 31b disposed on the rear surface side and having a diameter larger than that of the sliding member accommodating portion 31a and having a thread groove. It is formed in two stages. The front of the sliding member accommodating portion 31a is formed by being gradually contracted over the tip portion. That is, the diameter of the tip opening (sometimes referred to as the first opening 31c) of the sliding member housing 31a is formed with the smallest dimension.

  For example, a ball bearing 41 as a sliding member is rotatably accommodated in the sliding member accommodating portion 31a of the first sliding member mounting hole 31 as shown in FIG. The ball bearing 41 has a size that is larger than the diameter of the first opening 31c and smaller than the diameter of the sliding member accommodating portion 31a (excluding the first opening 31c and the diameter-reduced portion in front of the first opening 31c). It is formed with a dimension slightly smaller than the diameter of the moving member accommodating portion 31a, and a part thereof can protrude from the first opening 31c while being accommodated in the sliding member accommodating portion 31a.

  A lid 32 is screwed into the threaded portion 31b of the first sliding member mounting hole 31, and the rear surface side of the first sliding member mounting hole 31 is closed. The lid 32 closes the rear surface side of the first sliding member mounting hole 31 and is, for example, a screwing member that is screwed into the screw portion 31b. Thereby, the ball bearing 41 is accommodated in the first sliding member mounting hole 31 so as not to come out of the first sliding member mounting hole 31. For example, a compression coil spring 33 that is an urging member is provided between the lid body 32 and the ball bearing 41. A washer 34 is provided between the compression coil spring 33 and the ball bearing 41, and a part of the ball bearing 41 protrudes from the first opening 31c via the washer 34 by the urging force of the compression coil spring 33. When the leg portion 3 is inserted into the mounting hole 15, the ball bearing 41 comes into pressure contact with the inner wall of the mounting hole 15.

  Further, as shown in FIGS. 10A and 10B, a second sliding member mounting hole 35 extending in the front-rear direction and penetrating through the front tapered surface 3a and the rear surface is provided below the leg portion 3 in the height direction. ing. The inside of the second sliding member mounting hole 35 is opposite to the first sliding member mounting hole 31, and is a sliding member housing portion 35a disposed on the rear surface side and a sliding member housing portion 35a disposed on the rear surface side. A thread portion 35b having a larger diameter and a thread groove is formed in two steps. The rear side of the sliding member accommodating portion 35a is formed by being gradually contracted over a rear-side opening (sometimes referred to as a second opening 35c). That is, the diameter of the second opening 35c of the sliding member accommodating portion 35a is formed with the smallest dimension.

  For example, a ball bearing 42 as the sliding member 4 is rotatably accommodated in the sliding member accommodating portion 35a of the second sliding member mounting hole 35 as shown in FIG. The ball bearing 42 has a size larger than the diameter of the second opening 35c and smaller than the diameter of the sliding member accommodating portion 35a (excluding the second opening 35c and the reduced diameter portion), for example, this sliding member accommodating. The ball bearing 42 is formed with a size slightly smaller than the diameter of the portion 35a so that a part of the ball bearing 42 can protrude from the second opening 35c while being accommodated in the sliding member accommodating portion 35a.

  A lid 36 is screwed into the screw portion 35b of the second sliding member mounting hole 35, and the front side of the second sliding member mounting hole 35 is closed. The lid body 36 closes the front side of the second sliding member mounting hole 35 and is, for example, a screwing member that is screwed into a screw portion. Thereby, the ball bearing 42 is accommodated in the second sliding member mounting hole 35 so as not to come out of the second sliding member mounting hole 35. Between the lid 36 and the ball bearing 42, for example, a compression coil spring 37 that is an urging member is provided. A washer 38 is provided between the compression coil spring 37 and the ball bearing 42, and a part of the ball bearing 42 protrudes from the second opening 35 c via the washer 38 by the urging force of the compression coil spring 37. When the leg portion 3 is inserted into the mounting hole 15, the ball bearing 41 comes into pressure contact with the inner wall of the mounting hole 15. The ball bearing 42 protruding from the second opening 35c is slidably contacted with the rear surface of the mounting hole 15, and the ball bearing 41 protruding from the first opening 31c is slidably contacted with the front surface of the mounting hole 15, thereby The (document pressing plate opening / closing device body 2) can move smoothly in the height direction.

  Further, the leg 3 is preferably provided with an engaging means 5 having engaging convex portions 62 and 72 that engage with the engaging concave portion 16 provided in the mounting hole 15. The engagement means 5 preferably has a release means 8 for releasing the engagement state between the engagement convex portions 62 and 72 and the engagement concave portion 16. The engagement means 5 is not particularly limited as long as the engagement with the engagement recess 16 and the engagement state can be released. For example, a pair of engagement protrusions 61 having engagement protrusions 62 and 72, 71, and an extraction convex member 81 is preferably provided in the extraction convex member moving portion 53 which is a component of the release means 8.

  As shown in FIGS. 8 to 10B, as shown in FIGS. 8 to 10B, there are engaging convex member actuating portions extending in the width direction (left-right direction) and penetrating both side surfaces below the tapered portion 3 a in the height direction of the leg portion 3. 51 is provided. This engagement convex member operation part 51 is formed in the substantially convex shape which the front side side projected from the side view. Two through holes 52 are provided in the rear portion of the engaging convex member operating portion 51. These through holes 52 are arranged symmetrically with the central portion in the width direction as the center. Further, the convex tip end portion and the front surface side of the engaging convex member actuating portion 51 are formed as an extraction convex member moving portion 53 penetrating circularly. A pair of engaging convex members 61, 71 are movably provided in the engaging convex member operating portion 51, and the extraction convex member 81 moves to the engaging convex member operating portion 51 and the extraction convex member moving portion 53. It is provided as possible.

  The pair of engaging convex members includes a left engaging convex member 61 and a right engaging convex member 71. As shown in FIG. 11, the left side surface of the left engagement convex member 61 is an engagement convex portion 62 that protrudes from the left engagement convex member operating portion 51 (the left side surface of the leg portion 3). Inclined from approximately between the upper part and the central part of the upper part to the lower part, and formed as an inclined surface 62a. Further, an engagement operation recess 63 having a triangular cross section inclined from a side end portion on the opposite side to the engagement protrusion is provided on the front surface on the left side of the left engagement protrusion. The rear surface of the left engaging convex member 61 and the rear surface on the side end opposite to the engaging convex portion 62 protrudes in the front-rear direction and is formed as an extraction preventing convex portion 64. Further, an inclined leaf spring 65 attached to the lower end portion is provided on the side portion of the left engagement convex member 61 opposite to the engagement convex portion 62. The leaf spring 65 is an example of an urging member, and other urging members may be used. A spring accommodating portion 66 that accommodates the leaf spring 65 against the urging force is provided on the surface of the left engagement convex member 61 (also referred to as the first surface 61a) on which the leaf spring 65 is provided. ing.

  As shown in FIG. 12, the right engaging convex member 71 is provided symmetrically except for the left engaging convex member 61 and the leaf spring. That is, the right engaging convex member 71 is provided with an engaging convex portion 72 on the right side surface, an engaging operation concave portion 73 on the front surface, and an extraction preventing convex portion 74 on the rear surface. The plate spring 75 of the right engagement convex member 71 is attached to the upper end portion of the right engagement convex member 71 with the plate spring 65 of the left engagement convex member 61 being upside down. The leaf spring 75 is an example of an urging member, and other urging members may be used. A spring accommodating portion 76 that accommodates the leaf spring 75 against an urging force is provided on the surface of the right engagement convex member 71 (also referred to as the second surface 71a) on which the leaf spring 75 is provided. ing. As shown in FIG. 9, the left engagement convex member 61 and the right engagement convex member 71 are in surface contact with each other against the urging force of the leaf springs 65 and 75. At this time, the widths of the left engaging convex member 61 and the right engaging convex member 71 are formed to be slightly shorter than the width of the engaging convex member actuating portion 51 (the width of the leg portion 3). That is, the widths of the left engaging convex member 61 and the right engaging convex member 71 are formed so that the pair of engaging convex portions 62 and 72 can be accommodated in the engaging convex member operating portion 51.

  As shown in FIGS. 8, 9, and 13, the extraction convex member 81 is provided in the extraction convex portion 82 inserted into the extraction convex member moving portion 53 and the engagement convex member operating portion 51. Part 83. The extraction convex portion 82 is a circle having a diameter slightly smaller than the diameter of the extraction convex member moving portion 53 and is formed to have a length longer than the axial length of the extraction convex member moving portion 53. It is preferable that the lower surface of the front end surface of the extraction protrusion 82 is inclined. The operation part 83 is formed in a rectangular shape. On the rear surface of the operating portion 83, there are provided two engaging operating convex portions 84 that protrude rearward from the center portion to both side end portions. That is, the rear surface of the operating portion 83 is formed in a substantially V shape. These engagement operation convex portions 84 are formed so as to engage with the engagement operation concave portions 63 and 73 of the pair of engagement convex members 61 and 71, respectively. That is, the engagement operation convex portion 84 and the engagement operation concave portions 63 and 73 are respectively engaged so that the inclined surface of the engagement operation convex portion 84 and the inclined surfaces of the engagement operation concave portions 63 and 73 are brought into surface contact with each other. Is formed.

  The pair of engaging convex members 61 and 71 are engaged with the engaging operation concave portions 63 and 73 on the engaging operating convex portion 84 of the extracting convex member 81 in which the extracting convex portion 82 is inserted into the extracting convex member moving portion 53. And is movable in the width direction by two escape preventing members 91 provided between the pair of engaging convex members 61 and 71 and the rear wall surface of the engaging convex member actuating portion 51. The joint convex member actuating portion 51 is prevented from coming out. As shown in FIGS. 8, 9, and 14, the slip-out prevention member 91 is formed in a substantially L shape having a slip-out engagement portion 92 that is bent at, for example, approximately 90 °. The escape prevention member 91 is provided with an attachment hole 93 having a thread groove on the inner peripheral surface, and the escape prevention member 91 is screwed into the attachment hole 93 via the through hole 52 and the escape prevention member 91 is attached to the leg 3. When the engaging convex portions 62 and 72 protrude from the engaging convex member operating portion 51 (side surface of the leg portion 3), the pair of engaging convex members 61 and 71 are fixed. The pull-out prevention convex portions 64 and 74 engage with the pull-out engagement portion 92 of the pull-out prevention member 91, and the engagement operation convex portion 84 of the pull-out convex member 81 and each of the pair of engagement convex members 61 and 71. The engagement operation recesses 63 and 73 are engaged with each other so that the pair of engagement projection members 61 and 71 do not come out of the engagement projection member operation portion 51.

  As a result, the leaf springs 65 and 75 of the pair of engaging convex members 61 and 71 come into contact with each other, and the pair of engaging convex members 61 and 71 are urged away from each other by the urging force of each other. The mating projections 62 and 72 protrude from the engagement projection member operating portion 51 (side surface of the leg portion 3), and at this time, the engagement operation recesses 63 of the pair of engagement projection members 61 and 71 are provided. 73 and the engagement operation convex portion 84 of the extraction convex member 81 are engaged, and the extraction convex portion 82 projects from the extraction convex member moving portion 53 (the front surface of the leg portion 3). . Further, when the extraction convex portion 82 is moved in a direction to be immersed in the extraction convex member moving portion 53, the extraction convex member 81 is pushed into the engagement convex member operating portion 51 and the engagement operation convex portion 84. The engagement operation recesses 63, 73 move along the inclined surface of the plate, and the pair of engagement protrusions 61, 71 move against the urging force of the leaf springs 65, 75 in the direction approaching each other, and the left engagement protrusion The first surface 61 a of the member 61 and the second surface 71 a of the right engaging convex member 71 are in contact with or close to each other, and the two engaging convex portions 62 and 72 are configured to be immersed in the side surface of the leg portion 3. ing.

  Next, the operation of the original cover 1 and the office machine 10 according to the present invention will be described.

  When the apparatus main body 11 is not used, the original cover 12 is in close contact with the contact glass of the apparatus main body 11 to cover the contact glass as shown in FIG. In order to place a document on the contact glass, first, the document crimping plate is held by holding the end of the document crimping plate 12 on the side opposite to the portion where the document crimping plate opening / closing device body 2 is attached, or the vicinity thereof. Lift 12 up. That is, the original cover 12 is rotated about the hinge pin 24 to expose the contact glass surface to the outside. Thus, when the original cover 12 is rotated, the original cover 12 is urged to rotate in the opening direction by the urging force of the compression coil spring 23a, so that it can rotate in the opening direction without feeling weight. it can.

  After placing the document on the exposed contact glass surface, the lifted document pressing plate 12 is lowered. In other words, the original cover 12 is rotated in the closing direction in contact with the contact glass, and the hinge pin 24 is rotated about the shaft and moved downward to be in the closed state. At this time, if the document is a thin object, for example, a thin sheet, the document crimping plate 12 is only rotated around the hinge pin 24 and the document crimping plate 12 is brought into close contact with the contact glass without being lifted from the contact glass. Can be copied well.

  When the original is thick like a book, the original pressing plate 12 is rotated (moved downward) before the original pressing plate 12 is closed, that is, the original pressing plate 12 is the upper surface of the apparatus main body. Before being substantially parallel to the (contact glass), the original pressing plate comes into contact with the end of the original 17 (see FIG. 3), the end opposite to the end of the original 17 and the original pressing plate 12. A space is formed between That is, the document crimping plate 12 is in a state where the end opposite to the document crimping plate opening / closing device body 2 is lifted. The original pressure plate 12 on the floating side is pressed against the device main body 11 side, or the weight 3 of the original pressure plate 12 moves in the direction (upward) in which the leg 3 comes out of the mounting hole 15, and the original pressure plate opening / closing device main body 2 moves upward, and the original cover 12 rotates about the hinge pin 24 as an axis. That is, the height of the document crimping plate opening / closing device body 2 is automatically adjusted so as to cover the upper portion of the document 17, and the document crimping plate 12 moves. For example, when the upper part of the original 17 is a flat surface, the original cover 12 comes into surface contact with the upper part as shown in FIG. As a result, a thick original is stably adhered to the contact glass. Therefore, the original cover 12 can stably adhere the original to the contact glass regardless of the thickness of the original.

  As described above, when the leg portion 3 moves in the mounting hole 15, the ball bearings 41 and 42 are rotatably provided on the leg portion 3, and the ball bearings 41 and 42 are provided on the front surface and the rear surface that form the mounting hole 15. Since the ball bearings 41 and 42 rotate because they are in contact with each other, the leg 3 can be moved smoothly and reliably. That is, since the ball bearings 41 and 42 that are in contact with the inner wall of the mounting hole 15 rotate no matter how the leg 3 moves, the leg 3 can be moved smoothly. Further, when the original cover 12 is rotated in the closing direction, the front surface above the central portion in the height direction of the leg portion 3 contacts the wall surface on the front surface side where the attachment hole 15 is formed, and below the leg portion 3. Since the rear surface is in contact with the rear wall surface forming the attachment hole 15, the ball is placed on the front surface slightly above the center portion in the height direction of the leg portion 3 contacting the wall surface forming the attachment hole 15 and on the lower rear surface. By providing the bearings 41 and 42, the ball bearings 41 and 42 reliably come into contact with the wall surface that forms the mounting hole 15 when the leg portion 3 moves upward. Therefore, the leg 3 can be moved smoothly and reliably.

  Further, the engaging convex portions 62 and 72 protrude from both side surfaces of the leg portion 3 and the engaging convex portions 62 and 72 protrude into the engaging concave portion 16 of the mounting hole 15. Even if it is going to extract from the attachment hole 15, the engaging convex parts 62 and 72 engage with the engaging concave part 16 (refer FIG. 4A (b) and FIG. 4B (c)), and the office equipment 10 is used. The leg 3 does not come out of the mounting hole 15 during the process.

  In the case of maintenance or the like, the leg 3 is tilted to the rear side via the document crimping plate opening / closing device body 2 (see FIGS. 4B and 4D). Then, the lower part of the front surface of the leg portion 3 comes into contact with the wall surface on the front surface side that forms the mounting hole 15, and the tip end portion of the extraction convex portion 82 comes into contact with this wall surface, so that the extraction convex portion 82 becomes the extraction convex portion. It moves in the direction of immersing in the member moving part 53. The extraction convex member 81 is pushed into the engagement convex member actuating portion 51, and the engagement actuating concave portions 63 and 73 move along the inclined surface of the engagement actuating convex portion 84. 71 moves against the biasing force of the leaf springs 65 and 75 in a direction approaching each other, and the first surface 61a of the left engagement convex member 61 and the second surface 71a of the right engagement convex member 71 are in contact with or close to each other. At the same time, the two engaging convex portions 62 and 72 are immersed in the side surface of the leg portion 3. As a result, the engagement between the engagement convex portions 62 and 72 and the engagement concave portion 16 is released, so that the leg portion 3 is moved in the direction of coming out of the attachment hole 15 while the leg portion 3 is tilted to the rear side. And the leg part 3 can be extracted from the attachment hole 15 (refer FIG. 4B (e)). Further, since the lower portion of the front surface of the leg portion 3 is formed as the tapered surface 3a, the extraction convex member 81 can be reliably brought into contact with the wall forming the attachment hole 15, and the leg portion 3 is attached to the attachment hole. 15 can be reliably extracted. Therefore, since the leg 3 can be removed from the mounting hole 15 by tilting the leg 3 to the rear side, maintenance and replacement of parts and the like can be easily performed.

  In order to attach the leg portion 3 to the attachment hole 15, when the leg portion 3 is inserted into the attachment hole 15 from the distal end portion, the engaging convex portions 62 and 72 projecting from both side surfaces of the leg portion 3 form the attachment hole 15. Abuts against the end of the wall. At this time, since the lower sides of the engaging projections 62 and 72 are formed as inclined surfaces 62 a and 72 a, the engaging projections 62 and 72 resist the urging force of the leaf springs 65 and 75 as the leg 3 moves. The leg 3 can be inserted into the mounting hole 15 and attached by moving in the immersion direction. When the engaging convex portions 62 and 72 moved in the immersion direction reach the engaging concave portion 16 of the mounting hole 15, the engaging convex portions 62 and 72 project from both side portions of the leg portion 3 by the urging force of the leaf springs 65 and 75 and engage with the engaging concave portion 16. Match. As a result, by inserting the leg portion 3 into the attachment hole 15, the leg portion 3 is attached to the attachment hole 15 and the original pressure plate 12 is easily attached to the apparatus main body 11 via the original pressure plate opening / closing device body 2. Can do. Therefore, it is possible to easily attach and detach the document crimping plate opening / closing device body 2 and the document crimping plate 12, and to reduce the number of parts, thereby reducing the cost.

  As described above, in the document crimping plate opening / closing apparatus according to the present invention, since the spherical sliding member slidably contacting the inner wall of the mounting hole is rotatably provided on the leg portion, the leg portion inserted into the mounting hole is attached to the mounting hole. Since the spherical sliding member in contact with the inner wall of the mounting hole rotates no matter how it moves in the vertical direction, the leg can be moved smoothly and smoothly, so that the copying machine, It is suitably used as a document crimping plate opening / closing device for office machines such as printing machines, facsimile machines, and scanners.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows an example of the office equipment provided with the original document crimping plate opening / closing apparatus concerning this invention, and shows the state which closed the original document crimping board, (a) is a schematic plan view, (b) is a schematic side view. FIG. 3 is a schematic side view showing an example of office equipment provided with the original cover mounting device according to the present invention, and showing a state in which the original cover is opened 90 degrees. FIG. 2 is a schematic side view showing an example of office equipment provided with a document crimping plate opening and closing device according to the present invention and showing a state in which the document crimping plate is closed through a thick document. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows an example of the original document crimping plate opening / closing apparatus based on this invention, (a) is a front view which shows the state in which the leg part was inserted to the back of the attachment hole, (b) is an engagement convex part in an engagement recessed part. It is a front view which shows the state which has engaged. 1A and 1B are views showing an example of a document crimping plate opening / closing device according to the present invention, in which FIG. 3C is a side view showing a state in which an engaging convex portion is engaged with an engaging concave portion, and FIG. The side view which shows the state which moved the engagement convex part in the immersion direction by tilting back, (e) is a front view which shows the state which extracted the leg part from the attachment hole. It is a figure which shows an example of the original document crimping plate opening / closing apparatus which concerns on this invention, (a) is a front view, (b) is a right view. It is a figure which shows an example of the original document crimping plate opening / closing apparatus concerning this invention, (c) is a rear view, (d) is a perspective view. FIG. 5A is a cross-sectional view taken along line AA in FIG. 5A (a). It is a BB line arrow sectional view in Drawing 5A (a). It is CC sectional view taken on the line in FIG. 5A (a). It is sectional drawing which shows the state which made the engagement convex part which concerns on this invention immerse. It is a figure which shows an example of the attachment member which concerns on this invention, (a) is a perspective view, (b) is a rear view. It is a figure which shows an example of the attachment member which concerns on this invention, (c) is a right view, (d) is DD sectional view taken on the line in FIG. 10A (b). It is a figure which shows an example of the left engagement convex member which concerns on this invention, (a) is a perspective view, (b) is a top view, (c) is a front view, (d) is a right view, (e) is a bottom view FIG. It is a figure which shows an example of the right engagement convex member which concerns on this invention, (a) is a perspective view, (b) is a top view, (c) is a front view, (d) is a left view, (e) is a bottom view FIG. It is a figure which shows an example of the engagement convex part which concerns on this invention, (a) is a perspective view, (b) is a top view, (c) is a right view, (d) is a front view. It is a figure which shows an example of the attachment member which concerns on this invention, (a) is a perspective view, (b) is a top view, (c) is a front view, (d) is a right view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Original pressure plate opening / closing apparatus 2 Original pressure plate opening / closing apparatus main body 3 Leg part 4 Sliding member 5 Engaging means 8 Release means 10 Office equipment 11 Equipment main body 12 Original pressure bonding plate 15 Mounting hole 16 Engaging recess 31 First sliding member Mounting hole 35 Second sliding member mounting hole 41, 42 Ball bearing 61 Engaging convex member 62 Engaging convex part 65 Leaf spring 71 Engaging convex member 72 Engaging convex part 75 Plate spring 81 Extracting convex member 82 Extracting convex Part

Claims (7)

A leg portion of the document crimping plate opening / closing device body is slidably inserted into a mounting hole provided in the vertical direction of the apparatus body of the office equipment having the document crimping plate, and the document crimping plate is attached to the document crimping plate opening / closing device body. A document crimping plate opening / closing device that supports the document crimping plate so as to be openable and closable with respect to the apparatus body, wherein a spherical sliding member that press-contacts the inner wall of the mounting hole is rotatable on the leg portion. An original document crimping plate opening and closing device characterized by being provided.   2. The document crimping plate opening and closing device according to claim 1, wherein the sliding member is provided with a position shifted vertically in a front portion and a rear portion of the leg portion.   The document crimping plate opening and closing device according to claim 1 or 2, wherein the leg portion is provided with an engaging means having an engaging convex portion that engages with an engaging concave portion provided in the mounting hole. .   The document pressing plate opening / closing apparatus according to claim 3, wherein the engaging means includes a releasing means for releasing the engagement state between the engaging convex portion and the engaging concave portion. The engaging convex portion can be projected and retracted on both side surfaces of the leg portion and is urged in a protruding direction,
The release means is an extraction protrusion that can be moved in and out substantially below the front surface of the leg portion, and is biased in the protruding direction and moves the engaging convex portion in the retracted direction when moved in the retracted direction. Part
When the leg portion is tilted rearward, the extraction protrusion comes into contact with the wall surface forming the attachment hole and moves in the immersion direction so that the leg portion can be extracted from the attachment hole. The document crimping plate opening and closing device according to claim 4. The two engaging convex portions are respectively provided on a pair of engaging convex members that are supported by the leg portions so as to be movable in the width direction thereof. An urging member for urging the portion in a direction protruding from the leg, and a front side of the leg, separated from each other when the engaging convex portion protrudes from the leg, and the engagement An engagement operation recess that abuts or approaches each other when the protrusion is immersed in the leg,
The extraction convex portion is provided on an extraction convex member that is supported by the leg portion so as to be movable in the front-rear direction. When the engagement operation recesses are separated from each other, the extraction projection protrudes from the leg, and when the extraction projection is moved in a direction to be immersed in the leg, the two engagement operations are performed. 4. The document crimping plate opening and closing device according to claim 3, wherein an engagement operation convex portion is provided in which the concave portions abut or approach each other and the engaging convex portion is immersed in the leg portion.   An office machine equipped with a document crimping plate, comprising the document crimping plate opening and closing device according to any one of claims 1 to 6.

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