KR20090019700A - Apparatus for opening or closing plate pressing manuscript and office equipment with the same - Google Patents

Abstract

A manuscript compression plate opening/closing apparatus and an office apparatus with a manuscript compressing plate are provided to install a rotation control unit in one direction of a recess portion and a convex portion to generate large friction torque during rotation when rotating a support member, thereby controlling an opening/closing operation of the manuscript compressing plate. A support member(3) is rotatably fitted into a fitting member and simultaneously supports a manuscript compressing plate. A slider(5) is slidably contained in the support member. A cam member(6) is contacted with the slider and installed in the fitting member. An elastic member(17) is installed between the slider and the support member. A recess portion(7) is installed in one direction of a slider or a cam member. An insertion convex portion(8) is installed to fit into the recess portion of another direction. A rotation control unit(9) is installed in one direction of the recess portion or the insertion convex portion.

Description

Apparatus for opening or closing plate pressing manuscript and office equipment with the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a document pressing plate opening and closing device which is very suitable for use of an office device having a document pressing plate such as a copying machine, a printing machine, a facsimile machine, a scanner, and an office device having the document pressing plate.

In the main body of office equipment such as copiers, printers, facsimiles, scanners, etc., the original pressing plate covering the upper surface of the contact glass provided on the main body of the machine body is fitted with an opening / closing device of the original pressing plate. ) The platen plate opening and closing device is a kind of hinge mechanism, and the platen plate can be rotatably circumscribed around the hinge axis so that the platen plate can be pressed onto the contact glass on the upper surface of the machine body and the contact glass is exposed. It is possible. To set the original on the contact glass, open the original pressing plate (move the original pressing plate in the direction to be separated from the contact glass (called the individual direction)) to expose the upper surface of the contact glass, and place the original on the contact glass. After mounting, the original pressing plate is closed and the original of the original pressing plate is pressed onto the contact glass.

Among such document pressing plate opening and closing devices, a document pressing plate opening and closing device capable of opening a document pressing plate without feeling the original weight by the force of the compression spring is known (for example, See Patent Document 1). The platen switch opening and closing device is provided to be rotatable by attaching a hinge member to the unit body of the office equipment and a hinge pin to the unit, and at the same time, the support member and the support member attached to the platen plate are operated in a unique direction. A compression spring is provided. The compression plate is applied by the compression spring to support the rotation of the original plate in the individual direction. When rotating the original plate in the individual direction, the original compression plate does not feel the original weight by the force of the compression spring. It is possible to open it.

[Patent Document 1] Patent # 3262457

The document pressing plate opening / closing device described in this Patent Document 1 requires some force to initially counteract the biasing force of the compression spring when the document pressing plate is closed (rotated in the closing direction). It is possible to easily close the original press plate because the rotation moment to close the original press plate becomes larger than the biasing force that presses the original press plate on the way. However, there is a fear that the document compression plate may hit a good contact due to the high speed of rotation of the document compression plate, especially when the document compression plate has a weight in the apparatus in the automatic document feeder. Therefore, various devises are made by installing a damper means, and either the manufacturing cost is increased or the feeling of operation during the opening / closing operation of the original crimp plate becomes bad. In addition, there is a demand for a manuscript press plate opening and closing device having a brake function that does not affect the filling during opening and closing operations.

SUMMARY OF THE INVENTION An object of the present invention is to provide an office equipment provided with a platen plate opening and closing device and a platen plate which exhibits a brake function with a simple configuration in which the production cost is not high and the fabrication filling is also good.

In order to achieve the above object, the manuscript plate opening and closing device according to the present invention includes a mounting member mounted on the side of the apparatus main body of an office equipment having a manuscript compression plate, and rotatably mounted on the mounting member. A support member for supporting, a slider provided with a slider capable of sliding one of the support member and the mounting member in one direction, and the support member and the mounting member which are in contact with the slider and installed in the other direction And an elastic member installed between the slider and the supporting member or the mounting member on which the slider is accommodated, the elastic member for pressing the slider to the cam member to control the individual operation of the original pressing plate. In the original crimp plate opening and closing apparatus, either the slider or the cam member engages in one direction. And an insertion convex for fitting the engaging concave portion to the other direction of the slider and the cam member, and installing a rotation controller in at least one direction of the engaging concave portion and the insertion convex portion. It characterized in that it is configured to generate a large friction torque during the rotation when the support member is rotated to control the opening and closing operation of the platen plate.

According to the present invention, the engaging member is provided in one direction of the slider and the cam member and the insertion recess engaging with the engaging part is provided in the other direction of the slider and the cam member so that the rotation control part is provided in at least one direction of the engaging recess and the insertion recess. In order to control the opening and closing operation of the platen plate, which generates a large friction torque during this rotation when the support member is rotated with respect to the mounting member. When the platen plate is located near the upper surface of the main body of the machine, In order to generate the rotation control section, the platen press plate has a good power and there is no fear of hitting the main body of the apparatus. In addition, it is also possible to form a rotation control unit in order to improve the operation peeling during the opening and closing operation of the original compression plate. As a result, the original platen plate opening and closing device which exhibits a brake function with a simple configuration and does not have a high manufacturing cost and also has a good operating peeling can be obtained.

In the manuscript pressing plate opening and closing apparatus according to the present invention, the engagement recess is a slit-shaped engagement hole extending in the sliding direction of the slider and the insertion convex portion is an engagement convex surface protruding at the same time as extending in the sliding direction of the slider. It is preferable to form the said rotation control part by making the width | variety of a part of this engagement convex surface wide. In the original crimp plate opening and closing apparatus according to the present invention, the engagement recess is a slit-shaped engagement opening extending in the sliding direction of the slider, and it is preferable to form the rotation control section by narrowing a part of the engagement opening. In the document crimp plate opening and closing apparatus according to the present invention, the engagement recess is an engagement port portion in a slit cross-sectional concave state extending in the sliding direction of the slider, and protruding a portion of the bottom of the engagement hole portion to form the rotation control portion. desirable. In the original crimp plate opening and closing apparatus according to the present invention, it is preferable that one or two or more of the engagement protrusions and the insertion protrusions are provided. In the original crimp plate switchgear according to the present invention, the slider and the cam member generate friction torque between the mounting member and the support member when the support member is rotated with respect to the mounting member. It is preferable that the original press plate is formed on each of the cam shapes to stop free stop.

In the original crimp plate switchgear according to the present invention, the rotation control unit has a large friction torque when the document crimp plate is located near the upper surface of the apparatus main body or when the document crimp plate is located near the machine body in an upright state. It is desirable to be installed in order to occur. In the original crimp plate opening and closing apparatus according to the present invention, the mounting member includes a bottom plate mounted on an upper surface of the apparatus main body and two side plates lifted up from both sides of the bottom plate, and the supporting member has a hinge pin on both side plates. It is preferable that the cam member is mounted between the two side plates while being mounted to be rotatable. In the original crimp plate opening and closing apparatus according to the present invention, it is preferable that the attaching member has a corner portion which can be vertically inserted into a mounting hole provided in the apparatus body in the vertical direction. In the original crimp plate opening and closing apparatus according to the present invention, it is preferable that each of the sections is formed in a cylindrical shape and provided therein with an elastic member for biasing the slider and the slider in one direction. In the original pressing plate opening and closing apparatus according to the present invention, a lifting member is mounted on the free end side of the supporting member so that the lifting member can be rotated in a direction different from the rotational direction of the supporting member. It is preferable to be mounted. In the original crimp plate opening and closing apparatus according to the present invention, it is preferable that the attaching member includes a base having a rotation restricting portion at an upper end side of the respective portion, and the supporting member has a restricting portion that abuts on the rotation restricting portion.

In addition, the office equipment provided with a document crimping plate according to the present invention for achieving the above object is characterized in that the document presser opening and closing device according to the present invention. In the present invention, the engaging portion is provided in one direction of the slider and cam member as described above, and the convex portion engaging with the engaging portion is provided in the other direction of the slider and cam member, and in at least one direction of the engaging recess and the convex portion. It is designed to control the opening / closing operation of the platen press plate by generating a large friction torque during the rotation when the rotation control unit is installed and the support member is rotated with respect to the mounting member. In addition, a good original crimp plate opening and closing device can be obtained.

As described above, according to the office equipment provided with the document pressing plate opening / closing device and the document pressing plate according to the present invention, the engaging portion is provided in one direction of the slider and the cam member, and the engaging portion in the other direction of the slider and the cam member. And an insertion convex which fits the joint, and a rotation control part is installed in at least one direction of the engaging concave portion and the convex portion to generate a large friction torque during the rotation of the supporting plate. A press-plate opening and closing device having a simple function that does not have a high manufacturing cost and exhibits a good operating peeling can be obtained.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an office equipment provided with a document compression plate opening and closing device and a document compression plate according to the present invention will be described in detail with reference to the accompanying drawings. In addition, the following description adds the force of the lift function part which has each part, and also demonstrates the case where it carried out to the original crimping plate switchgear of the structure which does not accommodate a slider or an elastic means in each part. It is possible to carry out as long as there is no problem in the document crimping plate switchgear having a configuration other than that described in the embodiment.

1 to 3 is a view showing an example of the original pressing plate opening and closing device according to the present invention. The original pressing plate opening and closing device according to the present invention attaches the original pressing plate 12 to the rear end of the main body 11 of the office equipment 10 as shown in FIGS. The office equipment 10 is not particularly limited, and examples thereof include a copier printer, a facsimile machine, a scanner, and the like, and although a copier is particularly preferable, the present invention will be described without particular limitation.

The original crimping plate opening and closing apparatus 1 according to the present invention is hinged to the attaching member 2 and the attaching member 2, which are attached to the apparatus main body 11 side of the office equipment 10 having the document crimping plate 12. While the pin 16 is rotatably mounted on the shaft, any one of the support member 3, the support member 3, and the mounting member 2 for supporting the platen plate 12 can be mounted in one direction. For example, the slider 5 abuts the slider 5 and the slider 5 which are supported by the slider 3 so as to be able to slide, and any of the support member 3 and the mounting member 2 in another direction, for example, the mounting member ( It is provided between the cam member 6 and the slider 5 and the support member 3 provided in 2), and the slider 5 is pressed against the cam member 6 to perform the individual operation of the original pressing plate 12. Forming a closed state covering the upper surface of the machine body 11 to the original pressing plate 12 and the individual state to expose the upper surface by having the elastic member 17 for controlling and rotating the original pressing plate 12 to be. In the original pressing plate opening and closing device 1 according to the present invention, the insertion convex portion 8 is provided in one direction of the slider 5 and the cam member 6, for example, the cam member 6, and the slider 5 ) And the engaging member 7 engaged with the insertion convex portion 8 in the slider 5, for example, in the other direction of the cam member 6, and the engaging concave portion 7 and the insertion convex portion 8 are provided. When rotating the support member 3 with respect to the mounting member 2 by installing the rotation control unit 9 in at least one direction, a large friction torque is generated during this rotation to open and close the platen plate 12. Characterized in that configured to control.

For example, a contact glass (not shown) is provided on the upper surface of the apparatus main body 11, and the original glass is brought into close contact with the original pressing plate 12 while the contact glass is attached to the original pressing plate 12. Is covered by). At two locations near the rear end of the upper surface of the apparatus main body 11, mounting holes 13 in a concave state extending in the vertical direction (sometimes called height directions) are provided. The mounting hole 13 is formed in a cross section and a rectangular shape. The rear side of the mounting hole 13 is provided with a movable allowable recess 14 extending in the height direction. The length of the height direction of the movement allowable recessed part 14 determines the movement range of the height direction of the original crimp plate opening and closing apparatus 1, and is not specifically limited, It is set arbitrarily.

As shown in Figs. 1 to 4, for example, the mounting member 2 is provided on the upper surface of each of the base portion 21 and the base portion 21 extending downward from the lower surface of the base portion 21 and the base portion 21. The eastern part 22 is provided. The attaching member 2 is formed of, for example, synthetic resin, and is not limited thereto. The attaching member 2 may be formed of another material.

The base portion 21 is formed in a substantially rectangular flat plate shape. The lower surface of the base portion 21 is provided with a corner portion 25 extending downward from the lower surface. The corner portion 25 is formed in a substantially rectangular cross-section having a smaller cross section than the foundation portion 21, and the corner portion 25 is inserted into a mounting hole of the apparatus body 11, and the original pressing plate opening and closing device 1 is connected to the apparatus body ( It is mounted in (11). Two or more guide pieces 25a are provided in the upper part of the four surfaces (front, rear, both sides) of each part 25. As shown in FIG. The lower part of the back of each part 25 is provided with the substantially rectangular convex part 26 in which the lower surface was inclined. When the convex portion 26 inserts the corner portion 25 into the mounting hole 13, the convex portion 26 engages with the movable allowable portion 14 until the convex portion 26 contacts the correlating portion of the movable allowable portion 14. Each portion 25 of the mounting member 2, that is, the original pressing plate opening and closing device 1 in the range of to support the movable in the height direction. Further, the lower direction of the front surface of the corner portion 25 is inclined to form a tapered surface 25b, and the convex portion 26 is brought into contact with or close to the upper end of the movement allowable portion 14, and the corner portion ( When 25 is dropped on the rear side, the taper 25b is detached from the movable allowable portion 14 by the convex portion 26 in contact with or near the front wall of the mounting hole 13, and the corner portion 25 is mounted. Consists of being possible to subtract from (13).

The rotation part 22 is formed in the substantially rectangular shape whose cross section of a planar direction is smaller than the base part 21. As shown in FIG. The shaft 22a which meets from the upper side of the rotation part 22 and penetrates both sides is provided in the slightly rear side. The hinge pin 16 is inserted into this shaft hole 22a by inserting the bearing 28 into it. From the front surface of the rotating part 22 to the upper surface, it is formed as the cam member 6 which contacts the slider 5 in the pressed state. The cam member 6 is formed by forming each corner portion between the front surface and the upper surface on a curved surface. Moreover, the upper surface (upper plate) of the both sides of the base part 21 of the both side surface side of the rotation part 22 is formed in two steps with the front direction high, and the wall part which forms this two steps is inclined, and the rotation control part 23 ) Is formed.

The support member 3 is formed of, for example, synthetic resin, but is not limited thereto, and may be formed of another material. As shown in FIGS. 1-3, the support member 3 is formed in the rectangular cylindrical shape in the upper board 3a, the both side boards 3b, and the lower board 3c, for example. One end of the support member 3 is closed to form an elastic member support 3d. The tartan part of the support member 3 is open. Both side plates 3b are provided with mounting pieces 3e and 3f respectively attached to the rear end side of the original press plate 12 by vis (small screws) or the like. The end part of both side plates 3b is formed as the extended rotating piece 31. As shown in FIG. The length between the rotating pieces 31 is longer than the length between both sides of the rotating part 22 of the attaching member 2, for example, is formed in the dimension slightly longer. The hinge pin 16 is inserted into the rotating piece 31, and the shaft insertion hole 32 is provided. The shaft insertion hole 32 of the pivoting piece 31 and the shaft hole 22a of the mounting member 2 are combined so that the hinge pin 16 is inserted into the holes 32 and 22a to insert a washer or the like. As a result, the support member 3 is pivotally connected to the mounting member 2 with the hinge pin 16 as the shaft.

The tip end of the rotating piece 31 abuts against the rotation restricting part 23 of the mounting member 2 when the document pressing plate 12 is opened (rotated in the individual direction) (see Figs. 2 (b) and (c)). ) And a regulating section 33 for regulating the rotation range of the document crimp plate 12. In addition, in the present invention, the individual direction means a direction in which the original pressing plate 12 is separated from the contact glass when the original pressing plate 12 is rotated. In the present invention, the closed direction refers to a direction in which the closed document pressing plate 12 approaches the contact glass when the original pressing plate 12 is rotated in the direction opposite to the individual direction.

The elastic member 17 is to rotate the original pressing plate 12 in the individual direction, that is, in the opening direction. The elastic member 17 is not particularly limited and is, for example, a compression spring 17a. The compression spring 17a is defined between the cam member 6 and the elastic member support 3d accommodated in the support member 3. One end of the compression spring 17a is supported by the elastic member support portion 3d, and at the same time, the other end of the compression spring 17a is accommodated in the slider 5, and the slider 5 is fitted to abut on the cam member 6. It is. That is, the compression spring 17a presses the slider 5 to the cam member 6 to press the original pressing plate 12 in the individual direction. The number of the compression springs 17a is not specifically limited, One or two or more compression springs may be sufficient, and it is one in the example of illustration.

The slider 5 is formed of, for example, synthetic resin, but is not limited to this and may be formed of other materials. The slider 5 is accommodated in the support member 3 to close the support member 3 as shown in FIGS. 3 and 5. The slider 5 is formed on the rectangular user cylinder, for example. The slider 5 is formed in a circular shape as a spring accommodating portion 5b, and the other end of the compression spring 17a is accommodated in the spring accommodating portion 5b, and the contact portion 5a that is the bottom of the slider 5 is provided. ) Is made to abut on the cam member (6). The sliding part 51 which contacts the cam member 6 is provided in the contact part 5a. The cam member 6 has a shape in which the original pressing plate 12 is rotated in the individual direction about the hinge pin 16, and the original pressing plate 12 gradually rises to its own weight. It is preferable that the force for falling is weakened and the compression spring 17a is elongated according to this operation so that the bias force is also weakened and the original compression plate 12 is formed in a shape so as not to jump.

The engaging recess 7 and the insertion convex portion 8 engage with each other. The engagement recess 7 may be provided in both directions of the cam member 6 and the slider 5, and either the cam member 6 and the slider 5 may be provided in one direction, for example, It is provided in the slider 5. This engagement recessed part 7 is located in the position of the upper part (including the sliding part 51) from the upper direction to the lower part in the height direction (sliding direction) of the substantially center part of the contact part 5a of the slider 5, for example. It is formed in the slit sheet and is an engagement port 71. The engagement sphere 71 is formed to have substantially the same width, for example.

The insertion convex portion 8 is provided opposite to the engagement recess 7 and may be provided in both directions of the cam member 6 and the slider 5, and either of the cam member 6 and the slider 5 can be used. It is preferable to be provided in the direction, for example, it is provided in the cam member 6. The insertion convex portion 8 is made of, for example, an insertion iron piece 81 which extends in the sliding direction of the slider 5 and protrudes at the same time. The insertion iron piece 81 is, for example, approximately the central portion of the cam member 6 and is provided at a position from the upper surface to the lower front surface. The width of the insertion iron piece 81 is formed with a dimension length narrower than the width of the engagement hole 71.

The rotation control unit 9 is for controlling the rotational speed of the document pressing plate 12 by generating a large friction torque during the rotation of the support member 3 with respect to the mounting member 2. Although the rotation control part 9 may be provided in both directions of the engaging recess 7 and the insertion convex part 8, it is preferable to install either the engaging recess 7 and the insertion convex part 8 in one direction, For example, the insertion convex part 8 (insertion iron piece 81) is provided. The rotation control unit 9 can control the rotational speed of the document pressing plate 12, and is not particularly limited, and may be formed by, for example, widening the width of the insertion iron piece 81. It is preferable that the width of the rotation control section 9 is formed in a slightly wider dimension, for example, approximately equal to the width of the engagement section 71. The boundary line between the rotation control section 9 and the insertion iron piece 81 Although it may form in single phase, it is preferable to form in inclination. That is, it is preferable to gradually increase the width of the insertion iron piece 81 to form the rotation control unit (9). The position of the rotation control part 9 is arbitrarily determined, for example, when the original pressing plate 12 is located in the vicinity of the apparatus main body 11, the front surface of the cam member 6 may generate | occur | produce a large friction torque. It is formed in one place of the substantially center part of a height direction.

Next, the operation of the document presser opening and closing device 1 and the office equipment 10 according to the present invention will be described.

In the state where the device main body 11 is not used, the original pressing plate 12 is in close contact with the contact glass of the device main body 11 as shown in FIG. 1, and the contact glass is covered. At this time, the engagement hole 71 and the insertion iron piece 81 are engaged. In order to place the original on the contact glass, first, the original pressing plate 12 is moved upward with the end of the original pressing plate 12 or its vicinity on the side opposite to the place where the original pressing plate opening / closing device 1 is mounted. Lift it up. In other words, the original pressing plate 12 is rotated by the hinge pin 16 to the shaft to expose the upper surface of the contact glass to the outside, the original pressing plate 12 is placed in the individual position. At this time, as shown in Figs. 2 (b) and 2 (c), the restricting portion 33 of the supporting member 3 is in contact with the rotation restricting portion 23 of the mounting member 2. There is no opening so that it is possible to locate at the maximum individual position. In addition, when the original pressing plate 12 is rotated, the original pressing plate 12 is rotated in the individual direction by the biasing force of the compression spring 17a, so that the original pressing plate 12 rotates in the individual direction without feeling the weight. It is possible. In addition, the support member 3 (the original pressing plate 12) is rotated with respect to the mounting member 2 while the engagement mouth 71 and the insertion iron piece 81 are engaged and engaged.

After the document is placed on the exposed contact glass surface, the lifted document pressing plate 12 is lowered. In other words, the hinge pin 16 is rotated in the closed direction in which the original pressing plate 12 is in contact with the contact glass, and moved downward to make the closed state. At this time, some force is required to resist the biasing force of the compression spring 17a, but the moment of the compression plate 12 is greater than the biasing force of the compression spring 17a biasing the original compression plate 12. Since is large, it is possible to easily rotate the document pressing plate 12. Then, the platen plate 12 rotates thereon, and the rotational speed of the platen plate 12 is increased, but both sides of the rotation control unit 9 are in contact with both side wall portions of the engagement port 71, and a large friction torque is generated. And the rotational speed of the document pressing plate 12 is reduced. As a result, there is no fear that the original pressing plate 12 will hit the contact glass vigorously. The original placed on the contact glass is a thin cloth, for example, a sheet of thin paper, and the original pressing plate 12 only rotates the hinge pin 16 about its axis, and thus the original is contacted by the original pressing plate 12. It is possible to adhere well to the contact glass without floating on the glass and to copy the document well.

If the original is thick like a book, the original pressing plate 12 is rotated in the closing direction after placing the original on the contact glass, that is, before the original pressing plate 12 becomes closed, that is, the original pressing plate 12 The sheet pressing plate 12 is in contact with the end of the original before the sheet is brought into close contact with the contact glass, and a space is formed between the end of the original and the sheet pressing plate 12 opposite to the end of the original. That is, the document crimping plate 12 is in a state where an end portion on the side opposite to the document crimping plate opening and closing device 1 is floated. The document pressing plate 12 on the raised side is pressed against the machine main body 11 side or moved in the direction (upward) from which the corner portions 25 exit from the mounting hole 13 by the weight of the document pressing plate 12. As the original pressing plate opening and closing device 1 moves upward, the original pressing plate 12 rotates the hinge pin 16 about its axis. That is, the height of the document pressing plate opening and closing apparatus 1 is automatically adjusted to cover the upper part of the document, and the original pressing plate 12 moves. For example, when the upper portion of the original is a flat surface, the original pressing plate 12 is in surface contact with the upper portion. As a result, the thick original is stabilized and brought into close contact with the contact glass. Therefore, the original crimping plate 12 can not only stably close the original to the contact glass regardless of the thickness of the original, but also prevent the external light from invading the inside of the apparatus body and prevent the exposure from being disturbed.

In this way, when the original pressing plate 12 is rotated in the closing direction to approach the contact glass, both sides of the rotation control unit 9 come into contact with both side walls of the engagement port 71, and thus a large friction torque is generated. ), The rotation speed is reduced, and the original pressing plate 12 does not collide with the contact glass with force. In addition, when the original compression plate 12 is rotated in the individual direction while the original compression plate 12 is closed, the hand is lifted from the original compression plate 12 at a moment with the hand slightly raised by the hand. Even if it is detached, the two sides of the rotation control unit 9 are in contact with both side walls of the engagement hole 71, and friction torque is generated.Therefore, the contact glass may be strongly hit at the moment when the platen plate 12 is released. none.

In addition, the rotation control unit 9 gradually increases the width of the insertion iron piece 81 so as not to suddenly generate large friction torque during rotation of the original pressing plate 12, and gradually increases the friction torque. The operation peeling at the time of opening and closing the document crimping plate 12 becomes favorable.

Therefore, the platen presser opening and closing device 1 and the office equipment 10 according to the present invention have a simple structure, and the manufacturing cost is not high, the low-cost brake function can be exhibited, and the operation peeling can be made satisfactorily. It is possible to use the device 10.

In addition, although the rotation control part 9 is provided in the insertion convex part 8 (insertion iron piece 81) in the said embodiment, it is not limited to this, As shown in FIG. 6, the engagement recessed part 7 (engagement opening part 72) ) May be installed.

In this second embodiment, the rotation control section 91 gradually narrows the width of the side of the engagement mouth 72 and, for example, has a dimension slightly smaller than the width of the insertion iron piece 82 (see FIG. 7). It is preferable to form. In addition, the insertion iron piece 82 is formed in substantially the same width as FIG. As a result, when the support member 3 is rotated with respect to the mounting member 2 in the same shape as the case where the rotation control section 91 is provided in the insertion convex portion 8 (insertion iron piece 81), It is possible to control the opening / closing operation of the document press plate 12 by generating a large friction torque, and it is possible to achieve a brake function with low cost and low cost with a simple structure, and also to improve operation peeling. In addition, although not shown, the shape of the engagement recesses (engagement spheres) can be formed in a wedge state in the depth direction of the cam member 6 or the slider 5 provided therewith other than those shown in the figure. A brake action may be sufficient between the insertion recess (insertion iron piece) and the insertion recess (engagement opening) in conjunction with the opening and closing operation.

In addition, although the rotation control part 9 is provided in one place of the insertion iron piece 8, it is not limited to this and may be provided in two or more places. In the other 3rd installation form, for example, two rotation control parts 9 may be provided like FIG. As a result, large friction torques can be generated at two positions during the rotation of the document pressing plate 12 to control the opening and closing operation of the document pressing plate 12.

In addition, although the engaging recess 7 and the insertion convex part 8 are provided in one set, it is not limited to this, You may provide two or more sets. In the fourth embodiment, for example, two insertion iron pieces 81 having the rotation control unit 9 are provided in the cam member 6 as shown in FIG. 9, and the insertion iron pieces 81 as shown in FIG. 10. The engagement recesses 7 (engagement openings 71) may be provided at two positions of the slider 5 facing each other. As a result, when the support member 3 is rotated with respect to the mounting member 2, the two engagement recesses 7 and the insertion convex portion 8 generate a large friction torque during the rotation, and thus the original crimp plate 12 It is possible to reliably control the opening / closing operation, and the simple structure makes it possible to provide a brake function at a low cost without sacrificing manufacturing cost and to improve operation peeling.

In addition, although the case where the original crimp plate opening and closing device 1 is attached to the apparatus main body 11 by each part 25 was demonstrated, it is not limited to this, In this 5th Embodiment, for example, with reference to FIG. Likewise, the mounting member 102 extends in a direction orthogonal to the bottom plate 121 at both end portions of the bottom plate 121 and the bottom plate 121 which are detachably attached to the machine body (including a direction orthogonal to each other). And the cam member 106 provided between the two side plates 122 and the two side plates 122 facing each other simultaneously. In this case, the lift member 104 may be provided.

That is, the cam member 106 has an insertion convex portion 8 (insertion iron piece 81) having a rotation control portion 9, and is installed between the two side plates 122 in the mounting pin 115, for example. It is. The supporting member 103 is attached to the mounting member 102 so that the hinge pin 116 can be rotated about its axis. In the support member 103, the two first sliders 108 and the sliders 5 are accommodated with a second slider 105 having an engagement recess 7 (engagement port 71) of approximately the same structure. have. Between the first slider 108 and the second slider 105, the compression spring 117a, which is an elastic member 117, which biases the original pressing plate 12 in the individual direction, that is, in the opening direction, is accommodated. have. The lift member 104 is supported by the support member 103 so as to be polymerized with the support member 103 and to be rotatable about the lift pin 118 on the free end side of the support member 103. The lift member 104 is mounted on the document pressing plate 12. The lift member 104 is provided with an operation pin 119, and the first slider 108 abuts on the operation pin 119, so that the original can be stably adhered to the contact glass stably regardless of the thickness of the original. In addition, it is possible to prevent the external light from penetrating the inside of the apparatus main body and obstructing exposure. Even if it is comprised in this way, a manufacturing cost is not high and a brake function can be exhibited cheaply, and operation peeling can also be made favorable.

Moreover, each part may be formed in a cylindrical shape, and a slider may be stored in this part. In the sixth embodiment, that is, as shown in FIG. 12, the corner portions 205 protrude downward from the mounting member 202. This corner portion 205 is formed of a synthetic resin or the like on, for example, a substantially rectangular cylindrical shape in which the lower end (bottom) 205a is closed, that is, the user cylinder. The compression spring 206, which is an elastic member, is accommodated in the corner portion 205. In this corner portion 205, a slider 204 is stored to function as a slider. The supporting member 203 is rotatably connected to the mounting member 202 with the hinge pin 216 as the shaft. The cam member 207 is provided in the support member 203, and the slider 204 is press-contacted to this cam member 207. As shown in FIG. A reinforcement frame 209 is provided between the corner portion 205 and the slider 204.

Although the engagement hole 211 which is an engagement recess may be provided in both directions of the cam member 207 and the slider 204, either the cam member 207 and the slider 204 may be in one direction, for example, the slider 204. ) Is installed. Although the insertion iron piece 212 may be provided in both directions of the cam member 207 and the slider 204 in the insertion convex part, any of the cam member 207 and the slider 204 may be in a different direction, for example, a cam. It is provided in the member 207. The rotation control part 213 is provided in the insertion iron piece 212, for example. Even if it is comprised in this way, it is possible to exhibit the inexpensive brake function which is not high in manufacturing cost with a simple structure, and to make operation peeling favorable.

Moreover, the rotation control part 9 may be provided in the bottom part of the engaging recess 7 (engagement opening part 302). In the seventh embodiment, the rotation control unit 301 protrudes a part of the bottom of the engagement sphere 302 as shown in Figs. 13 and 14, and for example, protrudes the surface in the contact direction in a curved shape. desirable. In addition, the engagement sphere 302 may be provided in the cam member 311, and the engagement sphere 302 is, for example, an upper surface in the height direction (sliding direction) at approximately the center of the width direction of the cam member 311. It is formed on the slit of the concave section at a part from the front to the front surface. The insertion convex portion 303 protrudes from the sliding portion 314 of the slider 312, for example, as shown in FIG. The insertion convex portion 303 has a width narrower than that of the engagement hole 302, for example, a slightly narrower dimension. The surface in the sliding direction of the insertion convex portion 303 is preferably formed on a curved surface. The protruding shapes of the insertion convex portion 303 and the rotation control portion 301 are formed so as to maximize the rotational torque when the individual angle is about 5 degrees.

In addition, the sliding member 314 of the cam member 311 and the slider 312 rotates the supporting member 3 with respect to the mounting member 305 as shown in FIGS. 13 to 15. Friction torque is generated between (3), and the original pressing plate 12 is stopped freely with respect to the main assembly 11 as shown in FIG. The cam member 311 is formed by, for example, the upper surface of the upper surface and each of the corner portions thereof, and the sliding portion 314 has the surface formed on the curved surface. That is, when the cam member 311 and the sliding portion 314 of the slider 312 rotate the hinge pin 16 of the original pressing plate 12 in the individual direction about the axis, the original pressing plate 12 gradually lifts up to its own weight. As a result, the force to fall in the closing direction of the document pressing plate 12 is weakened, and according to this operation, the compression spring 17a is increased, so that its force is weakened, and the document pressing plate 12 does not jump. At the same time, it is preferable that the original pressing plate 12 is formed in a shape capable of pre-stopping the original pressing plate 12 with respect to the apparatus main body 11 by the friction torque generated by abutting each other.

Even if it is comprised in this way, the above-mentioned work effect is exhibited. That is, the document pressing plate 12 is in close contact with the contact glass of the device body 11 in a state where the device body 11 is not used, and the contact glass is covered. To place an original on the contact glass, first, the original pressing plate 12 has an end portion or the vicinity of the original pressing plate 12 on the opposite side to the location where the original pressing plate opening and closing device 300 is mounted, and the original pressing plate 12 is moved upward. Lift it up. The original pressing plate 12 is rotated around the hinge pin 16 to expose the upper surface of the contact glass to the outside, thereby positioning the original pressing plate 12 in the individual position. At this time, since the restricting portion 33 of the supporting member 3 is in contact with the rotation restricting portion 23 of the attaching member 305, the document crimp plate 12 is not opened excessively, and it can be positioned at the maximum individual position. . In addition, when the original pressing plate 12 is rotated, the original pressing plate 12 is rotated in the individual direction by the biasing force of the compression spring 17a, so that the original pressing plate 12 can be rotated in the individual direction without feeling the weight. . The support member 3 (the original pressing plate 12) rotates with respect to the mounting member 305 while the cam member 311 and the sliding part 314 of the slider 312 contact each other. For this reason, the rotation of the document press plate 12 is stopped and the original press plate 12 is kept in its stopped position by frictional force generated by the contact between the cam member 311 and the sliding part 314. . Therefore, it is possible to free-stop the original crimping plate 12 with respect to the apparatus main body 11.

After the document is placed on the exposed contact glass surface, the lifted document pressing plate 12 is lowered. That is, the hinge pin 16 is rotated on the shaft in the closed direction in which the original pressing plate 12 is in contact with the contact glass, and then moved downward to make the closed state. At this time, some force is required because it resists the negative force of the compression spring 17a, but the moment of the original compression plate 12 is greater than that of the compression spring 17a which imposes the original compression plate 12 on the way. Since it is large, it is possible to easily rotate the document pressing plate 12. In addition, the cam member 311 and the sliding part 314 abut against each other, and the supporting member 3 (the original pressing plate 12) rotates with respect to the mounting member 305.

When the document pressing plate 12 rotates further and approaches the contact glass, the rotation speed of the document pressing plate 12 is increased, but the rotation control unit 301 is in contact with the cam member 311 and the sliding part 314. ) Is brought into contact with the insertion convex portion 303 so as to be in contact with each other on the surface, so that a large rotational torque (or torque change) is generated between the rotation control portion 301 and the insertion convex portion 303. For this reason, the rotational speed of the document pressing plate 12 is not increased, but is slowed upside down. As a result, there is no fear that the original pressing plate 12 will hit the contact glass vigorously. If the original placed on the contact glass is a thin cloth, for example, a single piece of thin paper, the original pressing plate 12 may be formed by the pressing plate 12 with the hinge pin 16 as the axis to float on the contact glass. It is possible to make good copies of originals by being in close contact with the contact glass.

If the document is thick, such as a book, the document press plate 12 is rotated in the closing direction after the document is placed on the contact glass, and the document press plate 12 is not closed, that is, the document press plate 12 Before contact with the contact glass, the document pressing plate 12 contacts the end of the original, and a space is formed between the end of the original and the side of the original pressing plate 12. That is, the document pressing plate 12 is in a state in which an end portion on the opposite side to the document pressing plate opening and closing device 300 is opened. The document pressing plate 12 on the opening side is pressed against the machine body 11, and the respective parts 25 move in the direction (upper direction) from the mounting hole 13 by the weight of the document pressing plate 12 itself. As the document pressing plate opening and closing device 300 moves upward, the document pressing plate 12 rotates the hinge pin 16 to the axis. That is, the height of the document pressing plate opening and closing device 300 is automatically adjusted to cover the top of the document to move the document pressing plate 12. For example, when the upper portion of the original is a flat surface, the original pressing plate 12 is in surface contact with the upper portion. As a result, the thick original is stabilized and adheres to the contact glass. Therefore, the original pressing plate 12 can not only stably adhere the original to the contact glass irrespective of the thickness of the original, but can also prevent the external light from penetrating the inside of the apparatus body and preventing the exposure.

As the original pressing plate 12 is rotated in the closing direction to approach the contact glass, the rotation control unit 301 and the inserting convex part 303 abut each other, and a large rotational torque is generated, thereby rotating the original pressing plate 12. When the speed is slow and the original platen plate 12 is rotated in the closed direction in the closed state, the original platen plate 12 is slightly lifted up by hand in the closed state. 12) Even if it is removed, the original pressing plate 12 is kept in the position by the force of the friction and the compression spring 17a, so the original pressing plate 12 might be hit by the contact glass vigorously when it is released. There is no

Moreover, when the surface of the sliding direction of the rotation control part 301 is curved and the opening angle is 5 degrees back and forth, it turns out that suddenly large rotational torque generate | occur | produces during the rotation of the original press plate 12 so that rotation torque may become maximum. Therefore, the operation peeling at the time of opening and closing the document crimping plate 12 becomes good.

Therefore, in the seventh embodiment, the original crimp plate opening and closing device 300 and the office equipment 10 are simple in structure, have low manufacturing cost, exhibit a brake function at a low cost, and have a good operation peeling. It is possible to use the office equipment (10).

16 is a graph showing the correlation between the rotation moment curve of the platen plate and the torque curve of the platen plate opening and closing device, the torque curve of the platen plate opening and closing device of the platen plate is a predetermined individual angle ( In the embodiment, the rotation moment of the platen plate is greater than or equal to the predetermined individual angle and the rotation moment of the platen plate opening and closing device exceeds the rotation moment of the platen plate. Is configured to be in a state higher than the rotation torque of the original crimp plate switchgear. As a result, the original press plate 12 can be opened without feeling its original weight at the time of its individuality, and the original press plate 12 can be stopped at a free stop at an intermediate individual angle. In this case, the document pressing plate 12 does not drop rapidly, and it is possible to prevent the shape of the bobber during closing. The original crimp plate opening and closing apparatus 300 according to the present invention can make the rotation moment of the original crimp plate 12 higher than that of the conventional press plate 12 in order to make the rotation torque equal to that of a conventionally known one. Under a predetermined opening angle, it is understood that the rotation controller can prevent the rotational torque of the document pressing plate 12 from rapidly decreasing.

In addition, one rotation control unit 301 was provided at the bottom of the engagement hole 302 so that a large rotational torque was generated when the original crimp plate 12 was located near the upper surface of the apparatus main body 11. Instead, the rotation control unit may be provided so that a large rotation torque is generated when the document crimp plate 12 is located near the machine body 11 in an upright state, or a plurality of rotation control units may be provided. For example, in the case where a plurality of rotation control units are provided, when the document pressing plate 12 is located near the upper surface of the machine body 11 and the document pressing plate 12 is near the machine body 11 in the upright state. When located at, two rotation control units may be provided so that large rotation torques are generated respectively. In addition, the rotation control unit is provided at the bottom of the engaging sphere and at the same time as the side of the engaging sphere. For example, when the document pressing plate 12 is located near the upper surface of the machine body 11, and the document pressing plate 12 is used. When located near the machine body 11 in the upright state, a large rotational torque and a friction torque may be generated respectively.

As described above, the manuscript plate opening and closing device according to the present invention is provided with the engaging portion in one direction of the slider and the cam member, and the insertion convex portion engaging with the engaging portion in the other direction of the slider and the cam member. The rotation control unit is provided in at least one direction of the convex portion, and when the support member is rotated with respect to the mounting member, a friction torque is generated during this rotation to control the opening / closing operation of the platen press plate or the slider and cam member. When the engaging portion is provided in the direction, the insertion convex part fitting with the engaging portion in the other direction of the slider and the cam member is installed, and the rotation control part is installed in the engaging portion to rotate the support member with respect to the mounting member. It generates high rotational torque and controls the opening / closing operation of the platen press plate, so the production cost is high. It is used as a press-fitting plate opening and closing device for office equipment such as copiers, printers, facsimile machines, scanners, etc., since it exhibits a brake function with a simple configuration and good operation peeling.

1 is a schematic side view showing a state in which a document pressing plate is closed as an example of an office apparatus provided with a document pressing plate opening and closing apparatus according to the present invention.

Figure 2 is a view showing an example of the platen presser opening and closing device according to the present invention, ⓐ is a side view when the closed state, ⓑ is a perspective view when the open state, ⓒ is a side view when the open state.

Figure 3 is a cross-sectional view showing an example of the platen presser opening and closing apparatus according to the present invention, ⓐ is a view showing a closed state, ⓑ is a view showing an open state.

4 is a view showing an example of the mounting member according to the present invention, ⓐ is a perspective view, ⓑ is a front view.

5 is a perspective view showing an example of a slider according to the present invention.

6 is a front view showing an example of a slider according to the second embodiment.

7 is a front view showing an example of a mounting member according to the second embodiment.

8 is a perspective view showing an example of a mounting member according to a third embodiment.

9 is a front view showing an example of a mounting member according to the fourth embodiment.

10 is a front view showing an example of a slider according to the fourth embodiment.

FIG. 11 is a schematic cross-sectional view showing an example of a document crimp plate opening and closing device according to the embodiment of FIG. 5.

12 is a schematic cross-sectional view showing an example of a document crimp plate opening and closing device according to a sixth embodiment.

FIG. 13 is a perspective view showing an example of a document pressing plate opening and closing device according to a seventh embodiment. FIG.

FIG. 14 is a view showing an example of the mounting member according to the seventh embodiment, in which ⓐ is a perspective view, ⓑ is a front view, and ⓒ is an A-A line arrow sectional view in ⓑ.

Fig. 15 shows an example of a slider according to the seventh embodiment, in which ⓐ and ⓑ are perspective views, ⓒ is a front view, and ⓓ is a side view.

Fig. 16 is a graph showing a correlation between a moment curve and a torque curve of the original crimp plate opening and closing device according to the seventh embodiment.

Claims (13)

A mounting member mounted on the machine body side of the office equipment having a platen press plate, a support member rotatably attached to the mounting member and supporting the platen plate, and either of the support member and the mounting member. A slider which is slideably accommodated in one direction, a cam member which is in contact with the slider and is provided in any of the support member and the mounting member in another direction, the support member in which the slider and the slider are accommodated or In the original pressing plate opening and closing device having an elastic member which is installed between the mounting member and the slider is pressed against the cam member to control the individual operation of the original pressing plate, Either of the slider and the cam member is provided with engaging portions in one direction, and an insertion convex portion for fitting the engaging portions with the other of the slider and the cam member is provided, and the engaging recess and the insertion convex portion are provided. And a rotation control unit installed in at least one direction to rotate the support member with respect to the mounting member, thereby generating a large friction torque during the rotation to control the opening and closing operation of the original compression plate. Switchgear. The method of claim 1, The engagement recess is a slit-shaped engagement sphere extending in the sliding direction of the slider, and the insertion convex portion is an engagement iron piece that extends and protrudes simultaneously in the sliding direction of the slider, and widens a part of the engagement iron piece to widen the rotation control part. Original pressing plate opening and closing device characterized in that forming. The method of claim 1, And the engaging recess is a slit-shaped engaging opening extending in the sliding direction of the slider, and the rotation control section is formed by narrowing a part of both sides of the engaging opening. The method of claim 1, And the engaging recess is an engaging mouth on a slit cross-sectional concave portion extending in the sliding direction of the slider, and protrudes a portion of the bottom of the engaging mouth to form the rotation control section. The method of claim 1, The engagement plate opening and closing device of claim 1, wherein one or two or more of the engagement recesses and the insertion protrusions are provided. The method of claim 1, When the slider and the cam member rotate the support member with respect to the mounting member, a friction torque is generated between the mounting member and the support member to stop the original pressing plate against the apparatus body in a prestop manner. A platen presser opening and closing device, each formed in a cam shape. The method of claim 1, The rotation control unit is installed such that a large friction torque is generated when the document compression plate is located near the upper surface of the device body and / or when the document compression plate is located near the device body in an upright state. Original platen switchgear. The method of claim 1, The mounting member has a bottom plate mounted on an upper surface of the device body, and a two side plate lifted up from both side portions of the bottom plate, and the support member is attached to both side plates to be pivotally mounted, and at the same time Original press plate opening and closing device characterized in that the cam member is mounted between. The method of claim 1, And the mounting member has a corner portion which is inserted into the mounting hole in the vertical direction of the apparatus body so as to be movable. The method of claim 9, The corner portion is formed in a cylindrical shape, the original pressing plate opening and closing device, characterized in that for installing the slider and the elastic member for biasing the slider in one direction therein. The method of claim 1, The original pressing plate opening and closing apparatus, wherein the lifting member is mounted on the free end side of the supporting member so that the lifting member can be rotated in a direction different from the rotational direction of the supporting member, and the original pressing plate is attached to the lifting member. The method of claim 10, And said mounting member includes a base having a rotation restricting portion at an upper end side of each of said portions, and said supporting member has a restricting portion in contact with said rotation restricting portion. An office equipment provided with a document crimp plate, comprising the document crimp plate switchgear according to any one of claims 1 to 12.

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