JP2012234042A - Hinge mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a document or a finger which is an object to be read from being caught between a slider and an operation body in contact with the slider.SOLUTION: There is provided a catch preventing member 8 which divides a contact part between a slider 5 and an operation body (shaft members 3 and 3) into two while using the divided gap as a noncontact part and prevents an object to be read or the like from being caught in at least one of the slider 5, a support member a and the operation body. In addition, at least a part of the catch preventing member 8 is positioned on the noncontact part within the rotation range of a case body b to the support member.

Description

  The present invention relates to a hinge mechanism for connecting a reading device such as a copying machine and a lid.

As this type of hinge mechanism, one described in Patent Document 1 has been conventionally known.
This conventional hinge mechanism is used for, for example, a copying machine, and a coil spring is provided between a pair of sliders. When the support member and the case main body are rotated relative to each other, the slider is coiled by a shaft provided on the support member. The spring is moved against the spring force to generate a torque in a direction in which the lid of the copier is pushed up with respect to the support member.

  In the hinge mechanism as described above, there is a risk that, for example, an original for copying is sandwiched between the shaft provided on the support member and the slider. Also, since the portion of the slider that contacts the shaft is coated with grease to improve the sliding property between the shaft and the slider, if the original for copying is caught, the grease coated on the slider is applied. Adheres to the original document to be copied, and the original document becomes dirty or damaged.

Further, the lid of the copying machine may be kept open up to 90 degrees for some repair purpose. At this time, a person who is repairing may pinch a finger between the shaft and the slider. If the lid closes carelessly in such a situation, it could be the basis of injury.
Therefore, conventionally, an extension piece is provided on the slider, and the extension piece covers the shaft so that a document or a finger is not sandwiched between the shaft and the slider.

JP 2007-286630 A

In the conventional hinge mechanism as described above, the shaft cannot be completely covered with the extending piece provided on the slider, and therefore a gap is formed between the shaft and the extending piece, and the shaft and the slider Could not solve the problem that the manuscript and fingers were caught in between.
An object of the present invention is to provide a hinge mechanism that prevents paper or fingers from being sandwiched between an actuator corresponding to a conventional shaft and a slider.

  The first invention is a case main body that is fixed to a holding plate side that holds an object to be read, a slider that is movably provided between a pair of guide surfaces provided on both sides of the case main body, and the slider that faces the slider. And a coil spring interposed between the two surfaces.

  A support shaft is provided between the pair of guide surfaces of the case body, and a support member that is rotatably supported by the support shaft and fixed to the reading device side is provided. The support member thus configured is provided with an actuating body, and when the support member rotates relative to the support shaft, the turning force is transmitted to the slider via the actuating body, and the slider is Move against the spring force of the coil spring.

  The contact portion between the slider and the actuating body is divided into two parts, and the divided interval portion is set as a non-contact portion, and an object to be read is sandwiched between at least one of the slider, the support member, and the actuating body. An anti-pinch member for preventing this is provided. Furthermore, at least a part of the pinching prevention member is configured to be positioned in the non-contact portion within a rotation range of the case body with respect to the support member.

In addition, the non-contact part with respect to the said contact part may comprise the operating body which contacts a slider with two members, for example, and while providing a space | interval between these both operating bodies, it is good also considering the space | interval part as a non-contact part. In this case, the pinching prevention member different from the operating body is located in the non-contact portion.
Moreover, while comprising an operation body by one member, another member may be provided in the operation body and the part of the another member may be made into a non-contact part. In this case, the separate member can be a pinching prevention member.
Further, the reading object includes, for example, an original for copying and a human finger.

According to a second aspect of the present invention, the support member is provided with an opposing surface, and a pair of operating bodies is provided on the opposing surface of the support member with their tips opposed to each other. On the other hand, the slider is provided with a pinching prevention member, and the pinching prevention member is projected between the facing portions of the operating body.
In a third aspect of the present invention, an operating body is passed over the support member, and the pinching prevention member is provided on the operating body.

  According to a fourth aspect of the present invention, the pinching prevention member is provided on the support member.

According to a fifth aspect of the present invention, the length of the pinching prevention member in the rotation direction of the case main body and the support member is substantially equal to the contact range of the slider with which the operating body contacts in the process of rotating the case main body and the support member. Or a longer length.
In a sixth aspect of the present invention, the operating body is constituted by a roller.

  According to the first aspect of the invention, the contact portion is divided into two, the divided interval portion is set as a non-contact portion, and the reading object or the like is sandwiched between at least one of the slider, the support body, and the operating body. Since the anti-pinch member for preventing this is provided, there is no possibility that the reading object or the like is caught in the contact portion between the operating body and the slider.

  According to the second invention, since the pinching prevention member is provided on the slider side, the pinching prevention member can be integrally formed with the slider. If the pinching prevention member is integrally formed with the slider in this way, its manufacturing cost can be reduced and it can be manufactured at low cost. In addition, the pinching prevention member only needs to be projected between the facing portions of the operating body, and the dimensions thereof need not be strictly managed.

  According to the third aspect of the invention, since the operating body is passed over the support member and the pinching prevention member is provided on the operating body, the operating body can be constituted by a single shaft member. As described above, since the operating body can be constituted by one shaft member, it is easy to maintain the strength of the operating body.

  According to the fourth aspect of the invention, since the pinching prevention member can be provided also on the support member, the degree of freedom in design is increased because any one of them can be selected together with the second and third aspects. .

  According to the fifth invention, the length of the pinching prevention member is substantially equal to or longer than the contact range of the slider with which the operating body contacts in the process of rotating the case body and the support member. Therefore, it is possible to prevent the reading object or the like from being caught in a situation where the relative position between the operating body and the slider changes.

  According to the sixth aspect of the invention, since the operating body is constituted by a roller, grease or the like for ensuring the slipperiness between the operating body and the slider becomes unnecessary. Thus, since it is not necessary to use grease, it is possible to prevent the grease from adhering to the reading object or the like.

1 is a cross-sectional view illustrating a first embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. FIG. 3 is a front view illustrating a first embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. 1 is a cross-sectional view illustrating a first embodiment in a state where an angle between a support member and a case main body is maintained at 90 degrees. FIG. 3 shows the first embodiment and is a front view of a state in which an angle between a support member and a case main body is maintained at 90 degrees. It is a perspective view of the support member of a 1st embodiment. It is the fragmentary sectional view which expanded the attachment state of the action body provided in the support member of a 1st embodiment. It is a perspective view of the 1st slider of a 1st embodiment. It is the perspective view which looked at 1st Embodiment from back. It is a side view of the state which opened the case main body and lift member of 1st Embodiment. It is sectional drawing of the state which opened the case main body and lift member of 1st Embodiment. FIG. 9 is a cross-sectional view illustrating a second embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. The 2nd Embodiment is shown and it is a front view in the state where the angle of a support member and a case body was maintained at 60 degrees. FIG. 9 shows a second embodiment and is a cross-sectional view in a state where an angle between a support member and a case main body is maintained at 90 degrees. FIG. 9 is a front view illustrating a second embodiment, in which the angle between the support member and the case main body is maintained at 90 degrees. It is a perspective view of the support member of a 2nd embodiment. It is the fragmentary sectional view which expanded the attachment part of the action body provided in the support member of a 2nd embodiment. FIG. 9 is a cross-sectional view illustrating a third embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. It is a front view of the state which shows 3rd Embodiment and maintained the angle of a support member and a case main body at 60 degree | times. FIG. 9 is a cross-sectional view illustrating a third embodiment in a state where an angle between a support member and a case main body is maintained at 90 degrees. It is a front view of the state which shows 3rd Embodiment and maintained the angle of a support member and a case main body at 90 degree | times. FIG. 10 is a cross-sectional view illustrating a fourth embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. It is a front view of the state which shows 4th Embodiment and maintained the angle of a support member and a case main body at 60 degree | times. FIG. 9 is a partial cross-sectional view illustrating a fourth embodiment in a state where an angle between a support member and a case main body is maintained at 90 degrees. It is a front view of the state which shows 4th Embodiment and maintained the angle of a support member and a case main body at 90 degree | times. It is a perspective view of the slider of 4th Embodiment. It is a side view of the slider of 4th Embodiment. The slider of 4th Embodiment and the pinching prevention member are shown, (a) The side view of the state which maintained the angle of a support member and a case main body at 0 degree | times, (b) is the side surface of the state maintained at 30 degree | times. (C) is a side view of the state kept at 60 degrees, (d) is a side view of the state kept at 90 degrees. FIG. 10 is a partial cross-sectional view illustrating a fifth embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. FIG. 10 is a front view illustrating a fifth embodiment in a state where an angle between a support member and a case main body is maintained at 90 degrees. FIG. 10 is a partial cross-sectional view illustrating a fifth embodiment in a state where an angle between a support member and a case main body is maintained at 90 degrees. FIG. 10 is a front view illustrating a fifth embodiment in a state where an angle between a support member and a case main body is maintained at 90 degrees. It is a perspective view of the pinching prevention member of a 5th embodiment. FIG. 10 is a side view showing a relative relationship between a slider and a support member according to a fifth embodiment, in a state where an angle between the slider and the support member is kept at 0 degrees. FIG. 9 is a side view showing a relative relationship between a slider and a support member according to a fifth embodiment, maintained at 30 degrees. FIG. 7 is a side view showing a relative relationship between a slider and a support member according to a fifth embodiment, and is maintained at 60 degrees. FIG. 10 is a side view illustrating a relative relationship between a slider and a support member according to a fifth embodiment, which is maintained at 90 degrees. FIG. 10 is a partial cross-sectional view illustrating a sixth embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. FIG. 10 is a partial cross-sectional view illustrating a sixth embodiment in a state where an angle between a support member and a case main body is maintained at 90 degrees.

The first embodiment shown in FIGS. 1 to 10 is a hinge mechanism used in a copying machine. This hinge mechanism includes a support member a that is fixed to the reading device X side (see FIGS. 1 and 9) of the copying machine, and a first member. The case body b is rotatably supported by the support member a via the support shaft 1, and the lift member c is rotatably supported by the case body b via the second support shaft 2.
In addition, the said supporting member a is installed in the recessed part formed in the reader X so that FIG. 9 may also show.

The support member a is provided with both side upright pieces a2 and a2 on both sides of the flat plate portion a1 fixed to the reading device X side of the copying machine, and with a back side upright piece a3 between the both side upright pieces a2 and a2. (See FIG. 5).
A bolt hole a4 for fixing the support member a to the reading device X is formed in the flat plate portion a1, and shaft holes a5 and a5 are formed in the both side pieces a2 and a2. The shaft hole The first support shaft 1 is supported by a5 and a5.

  In addition, a pair of shaft members 3 and 3 as a first operating body are provided slightly forward and lower than the shaft holes a5 and a5. Yes. As is clear from FIG. 6, flange portions are formed at the base ends of the shaft members 3, 3, and the distal ends of the shaft members 3, 3 are spaced from each other as is clear from FIG. 5. They are facing each other.

  Furthermore, the first support shaft 1 supported between the shaft holes a5 and a5 supports the case body b so as to be rotatable. The case body b has hanging pieces b2 and b2 on both sides of the upper plate b1. While being formed, the first support shaft 1 penetrates the hanging pieces b2 and b2 and is supported by the shaft holes a5 and a5. In addition, the inner facing surface of these hanging pieces b2 and b2 is used as the guide surface of the present invention.

Further, the second support shaft 2 is stretched over the hanging pieces b2 and b2 on the side opposite to the side supported by the first support shaft 1, and as shown in FIG. Both ends of the shaft 2 are protruded from the hanging pieces b2 and b2, and a lift member c is rotatably connected to the protruding ends. That is, the lift member c is shaped to cover the case body b, and both side pieces c2 suspended from both sides of the upper plate c1 are placed along the outside of the suspended piece b2 of the case body b, and the second side pieces c2 The lift member c is rotatably supported by penetrating the tip of the support shaft 2.
The case body b and the lift member c rotate in opposite directions around the first and second support shafts 1 and 2.

The lift member c is supported by the second support shaft 2 as described above, and the second operating body 4 is provided between the both side pieces c2 and c2. The second operating body 4 is composed of a single shaft member 4a spanned between the both side pieces c2 and c2, and a roller 4b rotatably provided on the shaft member 4a. It is located below 2. A relief recess b3 is formed on the rear side of the case body b opposite to the first support shaft 1 (see FIG. 8), and when the second operating body 4 rotates together with the lift member c. The second operating body 4 is prevented from interfering with the case body b by the escape recess b3.
Reference numerals c3 and c3 are attachment pieces provided on the lower side of the both side pieces c2 and c2, and are fixed to a pressing plate Y (see FIG. 9) which is a lid of the copying machine. That is, the both side pieces c2 and c2 are embedded in the pressing plate Y (hereinafter referred to as “lid Y”) to fix the mounting pieces c3 and c3 to the lid Y.

On the other hand, the first and second sliders 5 and 6 are slidably incorporated between the guide surfaces which are the inner facing surfaces of the hanging pieces b2 and b2 of the case body b. A coil spring 7 that exerts a spring force during compression is interposed therebetween.
The first slider 5 is brought into pressure contact with the first support shaft 1 and the second slider 6 is brought into pressure contact with the roller 4b constituting the second operating body by the action of the spring force of the coil spring 7. , 2 sliders 5 and 6 are incorporated between the first support shaft 1 and the roller 4b constituting the second operating body. Thus, since the roller 4b of the second operating body is brought into pressure contact with the second slider 6, it is not necessary to apply grease to the contact portion between the second operating body 4 and the second slider 6.

As shown in FIG. 7, the first slider 5 is integrally formed with a pinching prevention member 8 formed of a convex portion formed on the front surface thereof, but the pinching prevention member 8 is formed on both sides of the pinching prevention member 8. The cam surfaces 9 and 9 are formed at right angles to 8.
The shaft members 3 and 3 as the first operating body perform an arc motion around the first support shaft 1 in the process in which the case main body b rotates with respect to the support member a, and 0 degrees to 60 degrees. The cam surfaces 9 and 9 are pushed in the process of rotating in the range of degrees, the first slider 5 is pushed while bending the coil spring 7, and the first slider 5 is separated from the first support shaft 1.

In addition, when the angle between the support member a and the case body b is in the range of the set angle or less, for example, in the range of 60 degrees or less in this embodiment, the shaft members 3, 3 are configured to contact the cam surfaces 9, 9, In the range of 60 degrees or more and 90 degrees, the shaft members 3 and 3 as the first operating body are configured to be kept away from the cam surfaces 9 and 9.
When the case main body b is kept at a position of 90 degrees with respect to the support member a, the rear end of the upper plate b1 of the case main body b hits the back side standing piece a3 of the support member a and does not rotate more than 90 degrees. (See FIG. 3).

Further, as described above, the first slider 5 moves against the coil spring 7 to bend the coil spring 7, and the spring force of the coil spring 7 at that time pushes up the lid Y, that is, the lid Y. Acts as a torque in the direction of opening. Therefore, for example, in a copying machine, when the lid Y is opened from the closed state, the spring force of the coil spring 7 becomes an assist force with respect to the force for opening the lid Y.
On the other hand, when the lid Y in the opened state is closed, the spring force of the coil spring 7 acts as a damping force for preventing the lid Y from dropping suddenly.

  On the other hand, in a state where the shaft members 3, 3 as the first operating body are pressed against the cam surfaces 9, the pinching prevention member 8 is configured to protrude between the opposed portions of the shaft members 3, 3. The length of the pinching prevention member 8 in the rotation direction of the case body b and the support member a is the first slider with which the shaft members 3 and 3 are in contact with each other in the process of rotation of the case body b and the support member a. 5 is approximately equal to or longer than the contact range of 5. Therefore, the pinching prevention member 8 is necessarily positioned between the shaft members 3 and 3 in a situation where the relative positions of the shaft members 3 and 3 and the first slider 5 change.

Since the pinching prevention member 8 provided on the first slider 5 protrudes between the shaft members 3 and 3 as the first operating body in this way, for example, a copy document as a reading object is connected to the shaft members 3 and 3. Even if it tries to enter between the first slider 5, the pinching prevention member 8 cannot get in because it gets in the way. The same is true for human fingers.
In the first embodiment, the contact portion of the present invention refers to an axial contact portion where the shaft members 3 and 3 and the first slider 5 are in contact with each other, and a non-contact portion is the opposite of the shaft members 3 and 3. Point between clubs.
In any case, in the present invention, the contact portion and the non-contact portion are provided, and the pinching prevention member 8 only has to protrude from the non-contact portion, and the form of the first operating body is not limited. is there.

The lift member c rotatably supported by the second support shaft 2 is for rotating in the opposite direction to the case body b when copying a predetermined page of a thick book, for example.
That is, in order to copy a thick book, when the book is placed on the reading device X and rotated in the direction in which the lid Y is closed in this state, the case main body b and the lift member c are moved until the lid Y hits the book. Are integrally rotated around the first support shaft 1.

  When the lid Y hits the book, the case body b stops its rotation and stops at that position. If the lid Y is further rotated with the case body b stopped in this way, this time, Only the lift member c rotates about the second support shaft 2, and as shown in FIG. 9, the support member a and the lift member c are parallel to each other while maintaining an interval corresponding to the thickness of the book.

Next, the bending state of the coil spring 7 when the case main body b and the lift member c are rotated in opposite directions will be described in detail.
When the case body b and the lift member c are integrally rotated about the first support shaft 1, the shaft members 3 and 3 as the first operating body push the first slider 5, but at this time The second slider 6 hits the second operating body 4 and is prevented from moving. Therefore, if the first slider 5 is pushed by the shaft members 3 and 3 as the first operating body, only the first slider 5 is moved and the coil spring 7 is bent.

Further, when the lift member c rotates, the first slider 5 is moved before that and the coil spring 7 is bent.
When the rotation of the case main body b is stopped, that is, the coil spring 7 is bent, the lift member c is rotated about the second support shaft 2, and the roller 4 b as the second operating body 4 is moved. In addition, while making a circular arc movement around the second support shaft 2, the second slider 6 is pushed in the process to further bend the coil spring 7.
Therefore, when the lift member c rotates, the amount of deflection of the coil spring 7 becomes larger than when the case body b and the lift member c rotate together.

On the other hand, the first slider 5 is provided with a spring receiver 10, and the tip of an adjustment bolt 11 is rotatably fitted to the spring receiver 10. The adjustment bolt 11 thus configured is protruded outward of the pinching prevention member 8 through the screw hole 12 formed in the first slider 5 and the pinching prevention member 8.
When the adjusting bolt 11 is rotated with respect to the screw hole 12, the adjusting bolt 11 moves in the axial direction with respect to the screw hole 12, and the spring receiver 10 is moved to bend the coil spring 7. Can be adjusted.

  FIG. 1 shows a state in which the opening degree of the case body b and the lift member c with respect to the support member a, that is, the opening degree of the lid Y is maintained at approximately 60 degrees. In FIG. 3, the opening degree of the case main body b and the lift member c relative to the support member a, that is, the opening degree of the lid Y is maintained at approximately 90 degrees.

  When the lid Y is at a position of 60 degrees, the first, second sliders 5 and 6 hold the initial position, the coil spring 7 maintains the maximum extension state, and the spring force is minimized. In the range of 60 degrees to 90 degrees, the shaft members 3, 3 as the first operating body are separated from the cam surfaces 9, 9 of the first slider 5. Therefore, in this state, that is, in the range of 60 degrees to 90 degrees, the torque to open the lid Y by the spring force of the coil spring 7 becomes zero, and in the range of 60 degrees to 90 degrees, the lid Y is It is in the free rotation range where the spring force does not act.

  Note that the range of 60 degrees to 90 degrees where the spring force of the coil spring 7 does not act is hardly used during the operation of copying a document. However, it is necessary to open the lid Y largely at the time of repairing the copy machine, and in this case, the lid Y may be opened up to 90 degrees.

When the lid Y is rotated in the closing direction from the state shown in FIG. 1 where the opening degree of the lid Y is maintained at 60 degrees, the shaft member 3, which is the first operating body, can be expressed in a relative manner. 3 pushes the first slider 5 and moves the first slider 5 against the coil spring 7. At this time, the second slider 6 is pressed against the roller 4b of the second operating body 4 and does not move any further. Therefore, if the first slider 5 moves as described above, the coil spring 7 is bent and spring force is applied. Demonstrate.
In addition, when the first slider 5 moves against the coil spring 7, the first support shaft 1 and the shaft members 3, 3 as the first operating body exert torque on the first slider 5. The arm length gradually decreases.

Accordingly, the torque in the direction of opening the lid Y changes in the relative relationship between the spring force of the coil spring 7 and the arm length that exerts the above torque. The torque in the first embodiment is Y is the minimum when the opening degree is 60 degrees, and as the lid Y is closed, the torque increases, and the opening degree is set so that the torque becomes maximum when the opening degree is around 10 to 15 degrees. Yes.
The torque acts as a damping force for preventing the lid Y from being closed suddenly by its own weight.

When the opening is smaller than 10 to 15 degrees, the amount of deflection of the coil spring 7 is increased. However, as described above, the length of the arm that exerts torque is shortened and the weight of the lid Y is determined. When the moment in the closing direction acts as a whole, the force in the direction of opening the lid Y suddenly weakens, and when the opening is zero, which is the state in which the lid Y is completely closed, the amount of deflection of the coil spring 7 is maximized. However, the arm length between the support shaft 1 and the shaft members 3 and 3 for applying torque to the first slider 5 is minimized, and the torque for opening the lid Y is minimized.
In this way, when the torque for opening the lid is minimum, the lid Y is kept closed and the document is pressed by the weight of the lid Y.

  In any case, in the first embodiment, the pinching prevention member 8 integrated with the first slider 5 is positioned between the shaft members 3 and 3 as the first operating body in the process of opening and closing the lid Y. Therefore, even if the original is about to enter between the shaft members 3, 3 and the first slider 5 with the pinching prevention member 8, the pinching prevention member 8 obstructs the entry. As described above, since the document is prevented from entering by the pinching prevention member 8, even if grease is applied to a portion where the shaft members 3, 3 and the cam surfaces 9, 9 are in contact with each other, the document is soiled by the grease. It can also prevent the fingers from being caught.

The second embodiment shown in FIGS. 11 to 16 is the same as the first embodiment except for the configuration of the first operating body which is different from that of the first embodiment.
Accordingly, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment in FIGS. 11 to 16, and detailed descriptions of those components are omitted, and the operations of the same components are described. Is also omitted.

The first operating body in the second embodiment is the both-side standing pieces a2 and a2 of the support member a, and the roller shafts 13 and 13 are located at exactly the same positions as the shaft members 3 and 3 of the first embodiment. The rollers 14 and 14 are rotatably provided on the roller shafts 13 and 13.
Therefore, in the second embodiment, unlike the first embodiment, it is not necessary to apply grease to the contact portion of the first operating body that contacts the cam surfaces 9 and 9.

  In the second embodiment as well, the contact portion of the present invention refers to the contact portion in the axial direction where the rollers 14, 14 as the first operating body and the first slider 5 are in contact, and the non-contact portion is a roller. 14 and 14 are the same as those in the first embodiment.

  According to the second embodiment, even if an original or the like is about to enter between the rollers 14 and 14 and the first slider 5, the pinching prevention member 8 obstructs and prevents it. Therefore, neither a document nor a finger is caught between the rollers 14 and 14 and the first slider 5.

The third embodiment shown in FIGS. 17 to 20 is the same as the first embodiment except for the configuration of the second operating body which is different from that of the first example.
Accordingly, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment in FIGS. 17 to 20, and detailed descriptions of those components are omitted, and the operations of the same components are described. Is also omitted.

  The second operating body in the third embodiment uses a pressing piece 15 integrated with the lift member c instead of the shaft member of the first embodiment. That is, the pressing piece 15 is formed by vertically bending an extended portion from the rear end of the upper plate c1 of the lift member c, and an arc portion 15a is formed at the tip of the pressing piece 15, and the arc portion 15a is formed as the second portion. It is in contact with the slider 6.

Although the second slider 6 on which the spring force of the coil spring 7 acts is constantly in pressure contact with the pressing piece 15 which is the second operating body, when the lift member c rotates counterclockwise in FIG. The arc portion 15 a of the pressing piece 15 pushes the second slider 6 and moves the second slider 6 against the spring force of the coil spring 7.
The function of the pressing piece 15 that is the second operating body is the same as the function of the second operating body of the first embodiment.
The reason why the arc portion 15a is provided in the pressing piece 15 as described above is that the lift member c is smoothly rotated and the strength of the portion is maintained.

The fourth embodiment shown in FIGS. 21 to 27 is different from the first embodiment in the configuration of the first operating body and the pinching prevention member, and is formed with a relief groove in the first slider. The operation is the same as in the first embodiment.
Accordingly, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment in FIGS. Is also omitted.

  The first operating body in the fourth embodiment is composed of a single shaft member 16, and this shaft member 16 stands on both sides of the support member a which is the same position as the position where the shaft members 3 and 3 of the first embodiment are provided. It spans between the pieces a2 and a2. The shaft member 16 is provided with a disk-shaped pinching prevention member 17, and the first slider 5 is formed with a relief groove 18 at a position facing the pinching prevention member 17 as shown in FIG. doing.

  When the angle of the lid Y with respect to the reading device X is in the range of 0 degrees to 60 degrees, the pinching prevention member 17 enters the escape groove 18 as shown in FIGS. Keep. In a state where the pinching prevention member 17 enters the escape groove 18, the pinching prevention member 17 crosses between the shaft member 16 and the first slider 5. Therefore, even if a document or the like attempts to enter between them, the pinching prevention member 17 is prevented. The member 17 can obstruct and prevent its entry.

The pinching prevention member 17 is located away from the escape groove 18 when the case main body b is at a position of 90 degrees with respect to the support member a, that is, at the position of FIG.
However, as is clear from FIG. 23, when the case body b is at an angle of 90 degrees with respect to the support member a, the gap between the pinching prevention member 17 and the cam surface 9 is kept very small. Thus, even if the case main body b is raised at 90 degrees as described above, the finger can be prevented from entering.

In the fourth embodiment, the width of the escape groove 18 in the axial direction of the shaft member 16 constitutes a non-contact portion of the present invention. The contact portion with the member 16 is the contact portion of the present invention.
In the fourth embodiment, the spring force adjusting mechanism using the spring receiver 10 and the adjusting bolt 11 cannot be structurally provided. This point is different from the first embodiment.

The fifth embodiment shown in FIG. 28 to FIG. 33 is different from the first embodiment in the configuration of the pinching prevention member and the point that the escape groove is formed in the first slider 5, and the other configurations and functions are the first embodiment. Is the same.
Accordingly, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment in FIGS. 28 to 33, and detailed descriptions of those components are omitted, and the operations of the same components are described. Is also omitted.

The 1st operation body in a 5th embodiment consists of a pair of shaft members 3 and 3 like a 1st embodiment, and between these shaft members 3 and 3, plate shape fixed to back side standing piece a3 of support member a. The pinching prevention member 19 is made to protrude.
That is, the plate-shaped pinching prevention member 19 is formed with bolt holes 19a at the edges to be fixed to the back-side upright pieces a3 as shown in FIG. 32, and the rotation-preventing convex portions 19b on both sides of the bolt holes 19a. 19b is formed. Further, an escape recess 19 c is formed on the upper edge of the pinching prevention member 19.

  As shown in FIGS. 28 and 30, the pinching prevention member 19 has the rotation preventing projections 19 b and 19 b fitted in the holes formed in the back-side standing piece a <b> 3, and the bolt holes 19 a are also formed in the back-side standing piece a <b> 3. The bolts 20 are passed through the bolt through holes and the bolt holes 19a, and the pinching prevention member 19 is fixed to the back upright piece a3. In this fixed state, the first support shaft 1 corresponds to the escape recess 19c.

The pinching prevention member 19 fixed in this manner is configured to protrude from the back side standing piece a3 between the shaft members 3 and 3 as the first operating body.
Also in the fifth embodiment, the cam surface 9 of the first slider 5 is formed with a relief groove 18 similar to that of the fourth embodiment, but the relief groove in the axial direction of the shaft members 3 and 3 is also described. The width of 18 constitutes the non-contact portion of the present invention, and the contact portion between the cam surface 9 and the shaft members 3 and 3 that are out of the escape groove 18 becomes the contact portion of the present invention. .

  When the angle of the lid Y with respect to the reading device X is in the range of 0 degrees to 60 degrees, the pinching prevention member 19 enters the escape groove 18 as shown in FIGS. Keep. In a state where the pinching prevention member 19 has entered the escape groove 18, the pinching prevention member 19 crosses between the shaft members 3 and 3 and the first slider 5. The pinching prevention member 19 can obstruct the entry.

The pinching prevention member 19 is located away from the escape groove 18 when the case main body b is at a position of 90 degrees with respect to the support member a, that is, at the position of FIG.
However, as is clear from FIG. 33 (d), when the case body b is at an angle of 90 degrees with respect to the support member a, the clearance between the pinching prevention member 19 and the cam surface 9 is very small. Even if the case main body b is raised at 90 degrees as described above, it is possible to prevent the finger from entering.
Further, in the fifth embodiment, the width of the escape groove 18 in the axial direction of the shaft members 3 and 3 constitutes a non-contact portion of the present invention, and the cam surface 9 deviated from the escape groove 18. The contact portion between the shaft members 3 and 3 is the contact portion of the present invention.
In the fifth embodiment, the spring force adjusting mechanism using the spring receiver 10 and the adjusting bolt 11 cannot be structurally provided. This point is different from the first embodiment.

The sixth embodiment shown in FIGS. 34 and 35 is different from the first embodiment in the configuration of the first operating body and the pinching prevention member and the point that the escape groove is formed in the first slider 5, and the other configurations and operations. Is the same as in the first embodiment.
Accordingly, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment in FIGS. 34 and 35, and detailed descriptions of those components are omitted, and operations of the same components are omitted. The explanation is also omitted.

The first operating body in the sixth embodiment is composed of a single shaft member 21, and the shaft member 21 stands on both sides of the support member a at the same position as the position where the shaft members 3, 3 of the first embodiment are provided. It spans between the pieces a2 and a2.
On the other hand, the pinching prevention member 22 forms a bolt hole 22a, an anti-rotation convex portion 22b, and a relief concave portion 22c substantially in the same manner as the pinching prevention member 22 of the fifth embodiment. However, in the sixth embodiment, when the pinching prevention member 22 is fixed to the back upright piece a3 as in the fifth embodiment, a through hole 22d is formed at a position corresponding to the shaft member 21, The shaft member 21 that is the first operating body is allowed to pass through the through hole 22d.

Also in the sixth embodiment, the cam surface 9 of the first slider 5 is formed with a relief groove 18 similar to the fourth embodiment.
When the angle of the lid Y with respect to the reading device X is in the range of 0 to 60 degrees, the pinching prevention member 22 keeps entering the escape groove 18 as in the fifth embodiment. In a state where the pinching prevention member 22 has entered the escape groove 18, the pinching prevention member 22 crosses between the shaft member 21 and the first slider 5. Therefore, even if a document or the like attempts to enter between them, the pinching prevention member 22 is prevented. The member 22 can obstruct and prevent its entry.

The pinching prevention member 22 is located away from the escape groove 18 when the case main body b is at a position of 90 degrees with respect to the support member a, that is, at the position of FIG.
However, as is apparent from FIG. 35, when the case body b is at an angle of 90 degrees with respect to the support member a, the gap between the pinching prevention member 22 and the cam surface 9 is kept very small. Thus, even if the case main body b is raised at 90 degrees as described above, the finger can be prevented from entering.

Further, in the sixth embodiment, the width of the escape groove 18 in the axial direction of the shaft member 21 constitutes a non-contact portion of the present invention, and the cam surface 9 deviated from the escape groove 18 and A contact portion with the shaft member 21 is a contact portion of the present invention.
Furthermore, in the sixth embodiment, the spring force adjusting mechanism using the spring receiver 10 and the adjusting bolt 11 cannot be structurally provided, so this point is different from the first embodiment.

  It is optimal as a hinge mechanism that connects the reading device of the copier and the lid.

a Support member b Case body b1 Upper plate X Reading device Y Holding plate (lid)
DESCRIPTION OF SYMBOLS 1 Support shaft 3 Shaft member which is 1st action body 5 Slider 7 Coil spring 8 Clamping prevention member 9 Cam surface 13 Roller shaft 14 which comprises 1st action body Roller 16 which constitutes 1st action body It is 1st action body Shaft member 17 Pinching prevention member 19 Pinching prevention member 21 Shaft member 22 which is the first operating body Pinching prevention member

Claims (6)

Between the case body that is fixed to the holding plate that holds the object to be read, a slider that is movable between a pair of guide surfaces provided on both sides of the case body, and a surface that faces the slider. An intervening coil spring, a support shaft is provided between the pair of guide surfaces of the case body, a support member is provided that is rotatably supported by the support shaft and is fixed to the reading device side,
The support member is provided with an operating body, and when the support member rotates relative to the support shaft, the turning force is transmitted to the slider via the operating body, and the slider is transmitted to the coil spring. In the hinge mechanism that moves against the spring force of
The contact portion between the slider and the actuating body is divided into two parts, and the divided interval portion is set as a non-contact portion, and an object to be read is sandwiched between at least one of the slider, the support member, and the actuating body. A hinge mechanism in which at least a part of the pinching prevention member is located in the non-contact portion within a rotation range of the case body with respect to the support member, while a pinching prevention member is provided.   The support member is provided with an opposing surface, and a pair of operating bodies are provided on the opposing surface of the supporting member with their tips opposed to each other, and the non-contact portion is formed between the tip opposing portions of the pair of operating bodies. 2. The hinge mechanism according to claim 1, wherein a pinching prevention member is provided on the pin, and the pinching prevention member protrudes between the facing portions of the operating body.   The hinge mechanism according to claim 1, wherein an operating body is stretched over the support member, and the pinching prevention member is provided on the operating body.   The hinge mechanism according to claim 1, wherein the pinching prevention member is provided on the support member.   The length of the pinching prevention member in the rotation direction of the case body and the support member is substantially equal to or more than the contact range of the slider that the operating body contacts in the process of rotating the case body and the support member. The hinge mechanism according to claim 1, wherein the length is maintained.   The hinge mechanism according to any one of claims 1 to 5, wherein the operating body is configured by a roller.

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