JP2014152904A - Document pressing plate opening/closing device and business machine with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a document pressing plate opening/closing device with a simple structure that eliminates a risk of pinching fingers, even if performed by holding each document pressing plate opening/closing device with one hand, respectively, when an operator or a worker performs attachment and detachment operation of a document pressing plate.SOLUTION: A document pressing plate opening/closing device comprises: a mounting leg; a cam part provided at the upper part of the mounting leg; a supporting member having a spring storage part, and turnably mounted with both connecting plates through a hinge pin in the cam part; a cam slider slidably provided in the inside of the spring storage part; and elastic means elastically installed in the inside of the spring storage part for pressing the cam slider to the side of the cam part. An abutment part coming into abutment with each other and controlling the turning of the supporting member when a document pressing plate is fully opened at each rear part of the mounting member and the supporting member is eliminated, a guide groove is provided in the cam part, and a guide pin engaged with the guide groove is provided in both connecting plates, thereby solving the problem.

Description

  INDUSTRIAL APPLICABILITY The present invention provides a document pressure plate opening / closing device suitable for office machines having a document pressure plate such as a copying machine, a multifunction machine (a copying machine having a facsimile or printer function), a printing machine, a facsimile machine, and a scanner. The present invention also relates to an office machine provided with the original pressure plate opening / closing device.

  As this type of document pressing plate opening / closing device, a device described in Patent Document 1 below is known. The document crimping plate opening / closing device described in Patent Document 1 includes a leg portion that is removably attached to an attachment hole provided in an apparatus body of an office machine, a fixed cam portion provided on an upper portion of the leg portion, A supporting member for the original pressure plate in which both connecting plates are rotatably attached to a fixed cam portion via hinge pins, a slider provided inside the supporting member so as to be slidable in contact with the fixed cam portion, In order to press the slider to the fixed cam portion side, it is constituted by elastic means elastically provided inside the support member.

  Also, as this kind of document crimping plate opening / closing device, a device described in Patent Document 2 below is also known. The document crimping plate opening / closing device described in Patent Document 2 is provided with a cylindrical mounting leg portion that is detachably attached to an attachment hole provided in the apparatus main body, and is slidably provided within the mounting leg portion. Via a hinge pin between a cam slider, elastic means elastically provided inside the mounting leg for urging the cam slider in one direction, and both connecting plates provided on the upper part of the mounting leg It comprises a support member that supports the original document pressure plate that is rotatably attached, and a cam portion that presses against the cam slider provided on the support member.

JP 2011-43593 A JP 2011-158053 A

  In general, the document pressure plate opening / closing device abuts between the rear side of the support member and the rear side of the mounting member in order to restrict the opening angle of the document pressure plate opened with respect to the apparatus body to a predetermined angle. Usually, a portion (stopper means) is provided. This abutting portion is normally configured to be able to stop and hold in the vicinity of an opening angle of about 90 degrees with respect to the apparatus main body when the original cover is opened. As shown in FIG. 13, the stopper portion of Patent Document 1 is arranged so that the upper surface of the fixed cam portion 1 c provided on the upper portion of the leg portion 1 and the rear portion of the upper plate 4 b of the support member 4 are in contact with each other. A stopper portion is formed. Further, in the case of Patent Document 2, as shown in FIG. 13, the stopper portion is formed such that the protrusion provided on the rotating member 120 contacts the rear cover plates 119L and 119R provided on the case member 110. Is formed.

  Further, the document crimping plate opening / closing device having the mounting leg can slide the mounting leg in the vertical direction with respect to the mounting hole. Therefore, when the document is a thick original such as a book, the mounting leg is mounted on the mounting hole. The upper surface of the thick original can be covered horizontally with respect to the contact glass by lifting the document crimping plate opening / closing device with respect to the apparatus body, and external light passes through the contact glass. This prevents it from entering the device body. When the thick original is thick like a dictionary, the operator removes the original pressure plate itself together with the original pressure plate opening / closing device and presses the upper surface of the thick original horizontally. Yes. Furthermore, when the original cover is attached to the main body of the apparatus, or when repairing and inspecting the inside of the main body of the apparatus after the attachment, the operator holds the connecting portion of the attachment member and the support member, and attaches to the attachment hole of the attachment leg. Detachment work is in progress.

  Therefore, holding the pair of left and right document crimping plate opening / closing devices themselves with one hand or holding the document crimping plate with both hands and pulling upwards, the mounting legs can be easily removed from the mounting holes provided in the device body. The original pressure plate can be removed from the apparatus main body, and the original pressure plate can be easily attached to the main body of the apparatus by pressing down the attachment legs of the attachment members to the attachment holes. The operator can easily attach and detach the document crimping plate opening / closing device with the document crimping plate attached to the machine body, and the operator can use both hands to hold the document crimping plate opening and closing device part when repairing, maintaining, and inspecting the document crimping plate and machine body. It is often seen to carry out attachment / detachment work with respect to the apparatus body.

  However, when the operator or the operator holds the pair of left and right document crimping plate opening / closing devices with both hands and performs the attaching / detaching operation on the apparatus main body, the elasticity of the elastic means acting on the document crimping plate is weakened. Since the original pressing plate swings back and forth and the support member rotates in the front-rear direction along with the swing, the contact portion (stopper means) provided between the support member and the mounting member. This causes a problem of pinching fingers.

  An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide a document crimping plate opening / closing device in which a mounting leg portion is provided on a mounting member. When attaching and detaching the document crimping plate to the main body, even if each document crimping plate opening / closing device is held with one hand, there is no risk of pinching fingers. There is a board opening and closing device.

  In order to achieve the above-described object, the present invention according to claim 1 is configured to connect a document pressing plate of an office machine to the apparatus main body so as to be openable and closable, and can be inserted into and removed from a mounting hole provided in the apparatus main body. A mounting member having a mounting leg portion attached to the cam and a cam portion provided on an upper portion of the mounting leg portion, and a spring accommodating portion, and both the connecting plates are rotatably attached to the cam portion via hinge pins. A supporting member for the original pressure plate, a cam slider slidably provided in contact with the cam portion inside the spring accommodating portion, and an inside of the spring accommodating portion for pressing the cam slider toward the cam portion. An elastic means elastically mounted on the mounting member and the rear part of the support member, and abutting parts that contact each other when the original pressing plate is fully opened and restrict the rotation of the support member are deleted. A guide groove is provided on one of the connecting plates of the cam portion and the support member, and a guide pin that engages with the guide groove is provided on the other of the connecting plates of the cam portion and the support member. The opening angle of the original cover is regulated.

  In this case, the invention according to claim 2 is an embodiment of the invention according to claim 1, wherein the guide groove is provided through the cam portion in parallel with the hinge pin. The guide pins attached to the two connecting plates are characterized by penetrating engagement with the guide grooves.

  The invention according to claim 3 is further an embodiment of the invention according to claim 1, wherein the guide groove is provided through the cam portion in parallel with the hinge pin, and is fitted into the guide groove. The guide pins to be combined are constituted by a pair of protrusions provided so as to project from both the connecting plates of the support member.

  The invention according to claim 4 is further an embodiment of the invention according to claim 1, wherein a pair of the guide grooves are provided without penetrating from both sides of the cam portion, and the guide pins are supported by the support pins. A pair of members provided so as to protrude from each of the two connecting plates of the member are formed and engaged with the pair of guide grooves, respectively.

  Further, the invention according to claim 5 is an embodiment of the invention according to claim 1, wherein a plurality of the guide grooves are provided in the cam portion at different positions in parallel to the hinge pins, and the guide pins Is provided in parallel with the hinge pin by changing the position from each of the two connecting plates of the support member, and is fitted into and engaged with the guide grooves.

  Further, the invention according to claim 6 is the document crimping plate opening and closing device according to each of claims 1 to 5, wherein the guide groove is provided in both connecting plates of the support member, and the guide pin is provided in the cam portion. It is characterized by that.

  Next, the present invention according to claim 7 is to connect the document pressing plate of the office equipment to the apparatus main body so as to be openable and closable, and is removably attached to an attachment hole provided in the apparatus main body. A mounting member having a cylindrical mounting leg portion having a spring accommodating portion and both connecting plates provided on the upper portion of the mounting leg portion; a cam slider slidably provided inside the spring accommodating portion; and In order to slidably bias the cam slider in one direction, the elastic means provided in the spring accommodating portion and the connecting plate provided at the upper portion of the mounting leg portion are rotatably attached via a hinge pin. A support member for supporting the original document pressure plate, and a cam portion that presses against the cam slider provided on the support member, and the original member is disposed at each rear portion of the mounting member and the support member. Abutting portions that abut against each other when the crimping plate is fully opened to restrict the rotation of the support member are deleted, and a guide groove is provided in either one of the connecting plates of the mounting member or the cam portion, A guide pin that engages with the guide groove is provided on the other of the two connecting plates of the mounting member and the cam portion, thereby restricting the opening angle of the original pressure plate.

  The invention according to claim 8 is an embodiment of the invention according to claim 7, wherein the guide groove is provided through the cam portion in parallel with the hinge pin, and both connecting plates of the mounting member The guide pin attached to is characterized in that it penetrates through the guide groove.

  The invention according to claim 9 is an embodiment of the invention according to claim 7, wherein the guide groove is provided through the cam portion in parallel with the hinge pin, and is fitted into the guide groove. The guide pins to be driven are constituted by a pair of protrusions provided so as to project from both the connecting plates of the mounting member.

  Furthermore, the invention according to claim 10 is an embodiment of the invention according to claim 7, wherein a pair of the guide grooves are provided without penetrating from both sides of the cam portion, and the guide pins are The mounting member includes a pair of protrusions provided from both the connecting plates, and is fitted into and engaged with the pair of guide grooves.

  Furthermore, the present invention is an embodiment of the invention described in claim 7, wherein a plurality of the guide grooves are provided in the cam portion at different positions in parallel with the hinge pins. A plurality of mounting plates are provided in parallel to the hinge pins at different positions from the two connecting plates, and are fitted into and engaged with the guide grooves.

  Further, the invention according to claim 12 is an embodiment of the invention according to any one of claims 7 to 11, wherein the guide groove is provided in both connecting plates of the mounting member, and the guide pin is provided in the cam portion. It is provided.

  According to a thirteenth aspect of the present invention, there is provided an office machine comprising the original document crimping plate opening / closing device according to any of the first to twelfth aspects.

  Since the present invention is configured as described above, the operator of the document crimping plate or the operator in the maintenance of the inside of the device main body is in the state of opening the document crimping plate in the front side of the device body with a simple configuration. When performing attachment and detachment work on the apparatus main body, it is possible to prevent fingers from being pinched between the support member and the attachment member by the original pressure plate that swings in the vertical direction, thereby improving safety. The effect of being able to be produced can be produced.

FIG. 3 is a perspective view of a normal state of the original document pressure plate opening and closing device according to the present invention alone. FIG. 2 is a perspective view of a supporting member that is rotated from the original pressing plate opening / closing device shown in FIG. 1 to a state when the original pressing plate is closed. FIG. 3 is a perspective view of the document crimping plate opening / closing device shown in FIG. 2 viewed from another direction. FIG. 2 is a side view showing a state where the original cover is attached to the apparatus main body of the office machine and the original cover is closed. FIG. 2 is a side view of a state in which the original pressing plate opening / closing device shown in FIG. 1 is attached to the apparatus main body of the office equipment and the original pressing plate is opened to the maximum opening angle. It is a longitudinal cross-sectional view of the state shown in FIG. FIG. 7 is a longitudinal sectional view showing a state where the original cover is opened to the intermediate opening angle from the state shown in FIG. 6. It is a longitudinal cross-sectional view of the state shown in FIG. This is a use state when the original is a thick original. It is a perspective view of the attachment member of the manuscript crimping plate opening and closing device concerning the present invention. FIG. 3 is a perspective view of a support member of the document crimping plate opening / closing device according to the present invention. FIG. 7 is a longitudinal sectional view as seen from the direction of line AA in FIG. 6 for explaining another embodiment of the document pressing plate opening / closing device according to the present invention. FIG. 7 is a longitudinal sectional view as seen from the direction of line A-A in FIG. 6 for explaining still another embodiment of the document crimping plate opening / closing device according to the present invention. It is a longitudinal cross-sectional view for demonstrating the further another Example of the original document crimping plate opening / closing apparatus which concerns on this invention. It is the longitudinal cross-sectional view which looked at the original-material crimping plate opening / closing apparatus shown in FIG. 14 from the direction of the BB line. It is a side view for demonstrating other Example of the original document crimping plate opening / closing apparatus which concerns on this invention. FIG. 17 is a longitudinal sectional view of the document crimping plate opening / closing device shown in FIG. 16. It is a longitudinal cross-sectional view for demonstrating the other Example of the original document crimping plate opening / closing apparatus which concerns on this invention. It is a longitudinal cross-sectional view explaining the use condition of the original document crimping plate opening / closing apparatus shown in FIG.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A document crimping plate opening / closing device and office equipment provided with the document crimping plate opening / closing device according to the present invention will be described below in detail with reference to the accompanying drawings. In the present invention, office equipment includes, but is not limited to, a copier, a multifunction machine (a copier equipped with a facsimile or printer function), a printing machine, a facsimile, a scanner, and the like. Further, the document pressing plate opening / closing device is not limited to the embodiment described below, and includes various other embodiments within a range not departing from the object of the present invention.

  The document crimping plate opening / closing device according to the present invention is mainly used to attach a relatively light document crimping plate to an apparatus main body of an office device so as to be opened and closed. In the drawing, a large number of recesses are provided on the outside of the mounting member and the support member, but this is provided to save and lighten the material of the mounting member and the support member. May be omitted.

  Further, the document crimping plate opening / closing device having this kind of mounting leg portion is not subjected to the load of the document crimping plate when the mounting leg portion of the document crimping plate opening / closing device is removed from the apparatus main body, so that the elasticity of the elastic means As shown in FIG. 1, the attachment member rotates with respect to the support member, and is in the same state as when the original cover is fully opened. When attaching the original cover to the main body of the apparatus in this state, there are cases where a portion of the attachment member that touches the cam portion is held by hand, and the original cover is shaken back and forth with respect to the attachment member. If there is a conventionally known contact portion described above between the mounting member and the mounting member, there is a problem that the hand is easily caught as described above.

  FIGS. 2 and 3 show the document crimping plate opening / closing device in a state where the document crimping plate is attached to the support member and closed to the closed state.

  1 to 11 show an example of a document crimping plate opening / closing device according to the present invention and an office machine equipped with the document crimping plate opening / closing device. The document crimping plate opening / closing device A according to the present invention is configured to connect the document crimping plate 3 to the device main body 2 of the office machine 1 so as to be openable and closable. Will be described.

  According to the drawing, as shown in FIG. 4, a mounting hole 2a is provided in the vertical direction at the upper end of the rear part of the main body 2 of the copying machine as an example of the office equipment 1 described in the drawing. The mounting leg portion 4a of the mounting member 4 of the document crimping plate opening / closing device A according to the first embodiment is inserted and fixed in the mounting hole 2a so as to be detachable. The mounting member 4 is a molded product of synthetic resin such as POM, for example, and a cam portion 4b is integrally provided on the upper portion of the mounting leg portion 4a. On the rear side of the mounting member 4, there is not provided an abutting portion that abuts on a rear portion of the support member 5 described later in the fully opened state of the original cover.

  The mounting member 4 can be made by pressing a metal plate, such as a stainless steel plate, in addition to the synthetic resin molded product of the embodiment. Alternatively, it is conceivable that the mounting leg portion is made of, for example, a stainless steel metal round bar, the base portion to which the cam portion is attached is made of a pressed product, and the metal mounting leg portion is attached to the base by means such as caulking. When all the attachment members are press-processed products, the cam portion is preferably attached to a base portion provided on the upper portion of the attachment member as a synthetic resin molded product.

  The support member 5 shown in the figure is a molded product of synthetic resin such as POM, for example. Both the connecting plates 5b and 5b extending rearward from the spring accommodating portion 5a having a rectangular tube shape in appearance are connected to the hinge pin 6. Via the cam part 4b of the mounting member 4 via a pivot. Inside the spring accommodating portion 5a, a cam slider 7 is slidably received in contact with the cam portion 4b, and the closing portion of the spring accommodating portion 5a is slidably biased in one direction. Between the inner side of 5c and the cam slider 7, elastic means 8 made of, for example, a compression coil spring is provided while being accommodated in the spring accommodating portion 5a. The small hole 5f provided in the closing part 5c is an air vent. The instruction symbol 5h is a bottom plate of the spring accommodating portion 5a.

  The upper side of both the connecting plates 5b and 5b of the support member 5 is not covered with, for example, the upper plate, and the portion constituting the upper plate 5d of the spring accommodating portion 5a is deleted, and the rear portion of the support member when the original cover 3 is fully opened. There is no abutting portion whose side abuts against the rear side of the mounting member 4.

  In other words, the abutting portions with which the rear side of the supporting member 5 abuts when the document pressing plate 3 is opened are removed on the rear side of the attachment member 4 and the supporting member 5. Further, mounting plates 5e and 5e for attaching the document pressing plate 3 outwardly from the side plates 5g and 5g constituting the spring accommodating portion 5a are provided.

  And the guide pin 9 attached to both the connection plates 5b and 5b of the support member 5 is engaged with the guide groove 4c provided in the cam part 4b by penetrating.

  The operation and effect of the document crimping plate opening / closing device A according to Embodiment 1 of the present invention will be described below.

  The rear part of the document pressing plate 3 is attached to the attachment plates 5e and 5e of the support member 5, and the attachment legs 4a of the attachment member 4 are inserted into the attachment holes 2a provided in the apparatus main body 2 of the office equipment 1, as shown in FIG. As described above, when the original cover 3 is closed, the elastic force of the elastic means 8 causes the cam slider 7 and the cam portion 4b to generate a rotational torque that the original cover 3 creates around the hinge pin 6 due to its weight. Similarly, since the rotational torque generated around the hinge pin 6 is superior, the original cover 3 is kept closed, and the original (not shown) placed on the contact glass 2b constituting the original placing table. ) Is pressure-bonded onto the contact glass 2b. In this closed state, the guide pin 6 is at the position of the start end a of the guide groove 4c.

  When opening the document crimping plate 3, if the front side of the document crimping plate 3 is pushed up by hand, the weight of the document crimping plate 3 is first felt, but the elasticity of the elastic means 8 immediately starts to increase, and the document crimping plate 3 The operator of the plate 3 can open it without feeling the original weight of the original cover 3, and between about 30 degrees and 60 degrees, the rotation speed that the original cover 3 creates around the hinge pin 6 and Since the hinge torque of the document crimping plate opening / closing device A is balanced, the document crimping plate 3 is kept open without falling naturally, so that both hands are free to place the document on the contact glass and remove it. Can be done without any problems. In the embodiment, as shown in FIG. 8 in particular, the document pressing plate 3 is slightly in front of the opening angle of about 90 degrees with respect to the apparatus body 2, and the guide pin 6 reaches the end portion b of the guide groove. Since it is locked in position, it cannot be opened any further. Also, in this fully opened state, as shown in FIG. 8, contact portions that contact each other as shown in Patent Documents 1 and 2 are provided on the rear side of the mounting member and the rear side of the support member. Therefore, even if the upper part of the mounting member is held by hand, there is no possibility of pinching.

  When the document is a thick document 10 such as a book, the document crimping plate 3 is opened, the thick document 10 is placed on the contact glass 2b, and the document crimping plate 3 is closed. Since the rear end portion of the thick document 10 is in contact with the rear end portion of the thick original 10, if the original pressing plate 3 is further pushed down, the mounting leg 4a is pulled upward from the mounting hole 2a according to the lever principle. As described above, the upper portion of the thick original 10 is horizontally covered with the original pressing plate 3 to prevent external light from entering the apparatus main body 2 through the contact glass and preventing clear copying as much as possible. Is something that can be done.

  When copying the document, assembling the office equipment 1 or when maintaining and inspecting the apparatus main body 2, when the document crimping plate 3 is assembled to the apparatus main body 2 or detached from the apparatus main body 2, the operator In many cases, the operator holds the connecting portion of the attachment member 4 and the support member 5 of the original pressure plate opening / closing device A, and at this time, the original pressure plate 3 is in a state where the maximum angle is opened. As described above, since it is in a state that is unstable with respect to each other, it is easy for an operator or an operator to pinch a finger, but the document crimping plate opening / closing device A according to the present invention is provided on the rear side of the mounting member 4 or the support member 5. Since the contact portion is not provided in the apparatus, even when the upper part of the attachment member 4 is held by hand and the attachment / detachment operation of the original cover 3 with respect to the apparatus main body 2 is performed, there is no possibility that the operator or the operator may pinch his / her finger. It is.

  FIG. 12 shows another embodiment of the original cover pressing device according to the present invention. According to the drawing, the document crimping plate opening / closing device B according to the second embodiment is such that the guide pins 11 and 11 with the head portions 11a and 11a extend from the spring accommodating portion 12a of the support member 12 to the rear side. A pair is attached to the connecting plates 12b and 12b, and is fitted into and engaged with guide grooves 13c provided in the cam portion 13b provided integrally with the upper portion of the attachment leg portion 13a of the attachment member 13, respectively. Other configurations are the same as those of the first embodiment. In the second embodiment, the guide pins 11 and 11 are attached to the two connection plates 12b and 12b of the support member 12 by, for example, E-rings 14 and 14, but both the connection plates 12b of the support member 12 by caulking. , 12b may be attached. Even if implemented in this manner, the object of the present invention can be achieved.

  FIG. 13 shows still another embodiment of the original cover pressing device according to the present invention. According to the drawing, in the document crimping plate opening / closing device C according to the third embodiment, the guide grooves 20c and 20c provided in the cam portion 20b integrally provided on the upper portion of the mounting leg portion 20a of the mounting member 20 are provided with the cam portion 20b. Guide pins 22, 22 provided from both coupling plates 21 b, 21 b that do not penetrate and extend from the spring accommodating portion 21 a of the support member 21 are fitted into and engaged with the respective guide grooves 20 c, 20 c. . Even if implemented in this manner, the object of the present invention can be achieved. In the third embodiment, male screws 22 a and 22 a are cut on the guide pins 22 and 22, and are screwed into female screw holes 21 c and 21 c provided on both connecting plates 21 b and 21 b of the support member 21. . Other configurations are the same as those of the first embodiment. Even if implemented in this manner, the object of the present invention can be achieved.

  14 and 15 show still another embodiment of the document crimping plate opening / closing device according to the present invention. According to the drawing, in the document crimping plate opening / closing device D according to the fourth embodiment, a pair of guide grooves 25c, 25d are provided on a cam portion 25b provided integrally with an upper portion of a mounting leg portion 25a of the mounting member 25. A pair of guide pins 27 and 28 attached to both coupling plates 26b and 26b extending from the spring accommodating portion 26a of the support member 26 are fitted and engaged with the guide grooves 25c and 25d. The reference symbol 29 is a hinge pin. Other configurations are the same as those of the first embodiment. Even if implemented in this manner, the object of the present invention can be achieved.

  16 and 17 show another embodiment of the document crimping plate opening / closing device according to the present invention. According to the drawing, in the document pressing plate opening / closing device E according to the fifth embodiment, the guide grooves 30c, 30c are provided on both the connecting plates 30b, 30b (only one is displayed) extending from the spring accommodating portion 30a of the support member 30. The guide pin 31 is provided on the side of the cam portion 32 b provided integrally with the upper portion of the mounting leg portion 32 a of the mounting member 32. The indication symbol 33 is a hinge pin. Other configurations are the same as those of the first embodiment. Even if implemented in this manner, the object of the present invention can be achieved.

  18 to 19 further show another embodiment of the document crimping plate opening / closing device according to the present invention. According to the drawing, in the document crimping plate opening / closing device F according to the sixth embodiment, the cam slider and the elastic means according to the first embodiment are provided on the mounting leg portion 35a of the mounting member 35, and on the support member 36 side. A cam portion 36b is provided in pressure contact with the cam slider provided integrally with the mounting portion 36a.

  In other words, the mounting leg portion 35a has a cylindrical shape provided with a spring accommodating portion 35c, and constitutes a cam slider 37 in the spring accommodating portion 35c and elastic means for slidably biasing the cam slider 37 upward. A compression coil spring 38 is accommodated. The attachment leg 35a is removably attached to an attachment hole 43a provided in the apparatus main body 43 of the office equipment 42. The support symbol 43b is contact glass. The support member 36 is provided with an attachment portion 36a for attaching the original pressure plate 39 and a cam portion 36b provided on the attachment portion 36a, and a pair of both connection plates 35b provided on the upper portion of the attachment leg portion 35a. , 35b (only one is shown) is rotatably connected by a hinge pin 40.

  The guide pin 41 is preferably attached to both connecting plates 35b and 35b (only one is shown) of the attachment member 35, and is fitted into a guide groove 36c provided in the cam portion 36b of the support member 36. The guide pin 41 may be provided toward the cam portion 36b, and the guide groove 36c may be provided toward both the connecting plates 35b and 35b of the mounting member 35. Alternatively, the guide pin 41 may be provided toward both the connecting plates 35b and 35b. It is the same as that of the first embodiment that it may be constructed so as to protrude from the side.

  In the sixth embodiment as well, the rear part of the attachment member 35 is not provided with an abutting part that comes into contact with the support member 36 when the support member 36 is rotated. A contact portion that contacts the member 35 is not provided. In other words, the abutting portions with which the rear side of the support member 36 abuts when the document pressing plate 39 is opened are deleted on the rear sides of the attachment member 35 and the support member 36.

  Accordingly, what determines the rotation range of the support member 36, that is, the maximum opening angle of the document pressing plate 39, is the engagement between the guide pin 41 and the guide groove 36c, as shown in FIG. The object of the present invention can also be achieved by carrying out in this way.

  Although illustration and description thereof are omitted, the modified embodiments according to the second to fifth embodiments can be applied even to the document pressing plate opening / closing device F according to the sixth embodiment.

  Further, in each of the above embodiments, the guide groove provided in the cam portion or both connecting plates is provided on the front side of the hinge pin, but this is centered on the rear side of the hinge pin or other hinge pins. The outer side is optional.

  In any of the above-described embodiments, the specific shapes of the attachment member and the support member are not limited to those of each embodiment. Various embodiments are conceivable as long as they do not depart from the objects and effects of the present invention.

  Since the present invention is configured as described above, it is safe to use as a manuscript crimping plate opening / closing device as a document crimping plate opening / closing device, such as a copying machine, a multifunction machine (a copying machine equipped with a facsimile or printer function), a printing machine, a facsimile. The present invention is suitably used as a document crimping plate opening / closing device for office equipment having a document crimping plate such as a scanner.

A, B, C, D, E, F Document crimping plate opening / closing device 1 Office equipment (copier)
2 Device body 2a Mounting holes 3, 39 Original pressure plate 4, 13, 20, 25, 32, 35 Mounting members 4a, 13a, 20a, 25a, 32a, 35a Mounting legs 4b, 13b, 20b, 25b, 32b, 36b Cam portions 4c, 13c, 20c, 25c, 25d, 30c, 36c Guide grooves 5, 12, 21, 26, 30, 36 Support members 5a, 12a, 21a, 26a, 30a, 35c Spring accommodating portions 5b, 12b, 21b, 26b, 30b, 35b Connecting plate 6, 29, 33, 40 Hinge pin 7, 37 Cam slider 8 Elastic means 9, 11, 22, 27, 28, 31, 41 Guide pin 38 Compression coil spring

Claims (13)

  The document crimping plate of the office equipment is connected to the apparatus main body so as to be openable and closable, and is provided on a mounting leg portion that can be removably attached to a mounting hole provided in the apparatus main body, and an upper portion of the mounting leg portion. A mounting member having a cam portion, a supporting member for the original pressure plate having a spring accommodating portion, and both connecting plates rotatably attached to the cam portion via hinge pins, and the spring accommodating portion inside the spring accommodating portion. The mounting member and the support member include a cam slider slidably provided in contact with the cam portion and elastic means elastically provided in the spring accommodating portion to press the cam slider toward the cam portion. The abutting portions that abut each other at the time of full opening of the original pressing plate and restrict the rotation of the supporting member are deleted, and either one of the connecting portions of the cam portion and the supporting member is not provided with a guide. A guide pin that engages with the guide groove is provided on either one of the connecting plates of the cam portion and the support member, thereby restricting the opening angle of the original pressure plate. A document crimping plate opening and closing device.   The guide groove is provided through the cam portion in parallel with the hinge pin, and the guide pins attached to both connecting plates of the support member are engaged with the guide groove. The document crimping plate opening and closing device according to claim 1.   The guide groove is provided through the cam portion in parallel with the hinge pin, and the guide pin to be fitted and engaged with the guide groove protrudes from each of the connecting plates of the support member. 2. The document crimping plate opening / closing device according to claim 1, wherein the document crimping plate opening / closing device is constituted by a pair of provided ones.   The guide grooves are provided as a pair without penetrating from both sides of the cam portion, and the guide pins are constituted by a pair of protrusions provided from both the connecting plates of the support member. 2. The document pressing plate opening / closing device according to claim 1, wherein the document pressing plate opening / closing device is fitted and engaged with each of the pair of guide grooves.   A plurality of the guide grooves are provided in the cam portion in different positions in parallel with the hinge pins, and a plurality of the guide pins are provided in parallel with the hinge pins by changing the positions of the both connecting plates of the support member. 2. The document crimping plate opening / closing device according to claim 1, wherein the document pressing plate opening / closing device is fitted into and engaged with each guide groove.   The document crimping plate according to claim 1, wherein the guide groove is provided in both connecting plates of the support member, and the guide pin is provided in the cam portion. Switchgear.   A cylindrical mounting leg portion having a spring accommodating portion that is detachably connected to a mounting hole provided in the apparatus main body, and is connected to the apparatus main body so as to be openable and closable. In order to slidably bias the cam slider in one direction, a mounting member having both connecting plates provided on the upper portion of the mounting leg, a cam slider slidably provided in the spring housing portion, and A support for supporting the original pressure plate that is rotatably mounted via a hinge pin between the elastic means provided in the spring accommodating portion and the connecting plates provided on the upper portion of the mounting leg. And a cam portion that press-contacts the cam slider provided on the support member, and abuts each of the mounting member and the rear portion of the support member when the original cover is fully opened. The contact portion that restricts the rotation of the support member is deleted, and a guide groove is provided in either one of the connection plates of the attachment member and the cam portion, and both the connection plates of the attachment member and the cam A document crimping plate opening and closing device, characterized in that a guide pin that engages with the guide groove is provided on the other of the first and second portions so as to regulate the opening angle of the document crimping plate.   The guide groove is provided through the cam portion in parallel with the hinge pin, and the guide pins attached to both connecting plates of the attachment member are engaged with the guide groove. The document crimping plate opening and closing device according to claim 7.   The guide groove is provided through the cam portion in parallel with the hinge pin, and the guide pin to be fitted and engaged with the guide groove protrudes from each of the connecting plates of the mounting member. The document crimping plate opening and closing device according to claim 7, wherein the document crimping plate opening and closing device is configured by a pair of provided ones.   The guide grooves are provided as a pair without penetrating from both sides of the cam portion, and the guide pins are constituted by a pair of protrusions provided from both the connecting plates of the mounting member. 8. The document crimping plate opening / closing device according to claim 7, wherein each of the pair of guide grooves is fitted and engaged.   The guide groove is provided in a plurality of positions in the cam portion in parallel with the hinge pin, and the guide pins are provided in a plurality in parallel with the hinge pin by changing the position from each of the connecting plates of the mounting member. 8. The document crimping plate opening and closing device according to claim 7, wherein the document crimping plate opening and closing device is fitted and engaged with each guide groove.   The document crimping plate according to any one of claims 7 to 11, wherein the guide groove is provided in both connecting plates of the mounting member, and the guide pin is provided in the cam portion. Switchgear.   An office machine comprising the document crimping plate opening and closing device according to any one of claims 1 to 12.

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