Opening and closing supporting device and office machine using opening and closing supporting device

Abstract

The invention provides an opening and closing support device and an office machine using the opening and closing support device, and the opening and closing support device does not deform a first sliding member and a pressed member which are in a strong crimping state even though the opening and closing support device is subjected to an environment test in assembling and transporting processes. The opening and closing support device includes: an attachment member having a bottom plate portion, left and right side plate portions, and a rear plate portion attached to the device body side of the office machine; a support member having a back plate portion, two side plate portions vertically disposed from the back plate portion, and left and right holding plate portions disposed inward from the two side plate portions, the two side plate portions being pivotally supported by the two side plate portions of the mounting member via first hinge shafts so as to be rotatable; the lifting component is mounted on the cover body side and is provided with a back plate part, left and right side plate parts vertically arranged from the back plate part, and left and right mounting plate parts arranged from the front ends of the two side plate parts to the outer side, and the two side plate parts are supported on the two side plate parts of the supporting component through second hinge shafts and rotate in the direction opposite to the rotating direction of the supporting component; the pressure receiving component is arranged between the two side plate parts of the mounting component; the action component is arranged on the second hinge shaft side of the lifting component; and a first sliding cam member, a second sliding cam member, an elastic member and a dissociation mechanism.

Description

Technical Field

[0001] The present invention relates to an opening and closing support device and an office machine using the same, wherein the opening and closing support device can open and close a cover body of a manuscript pressing plate or the like on a device body of an office machine such as a copier, a multifunction machine, a printer, a fax machine, or a scanner. Background Art

[0002] A known opening and closing support device is described in the following patent document 1, which includes a mounting member, a supporting member, a lifting member, a pressure-bearing member, an action member, a first sliding cam member, a second sliding cam member and an elastic member, wherein the mounting member has a bottom plate portion, two side plates and a rear plate portion, and the rear plate portion is mounted on the device body side of the office machine; the supporting member has a back plate portion, two side plates vertically arranged from the back plate portion, and a holding plate portion arranged inwardly from the two side plates, and the two side plates are rotatably supported on the two side plates of the mounting member through a first hinge axis; the lifting member is mounted on the cover body side, and has a back plate portion, two side plates vertically arranged from the back plate portion, and a holding plate portion arranged inwardly from the two side plates The two side plates and the mounting plate arranged from the front end of the two side plates to the outside are supported on the two side plates of the support member through the second hinge axis and can rotate in the direction opposite to the rotation direction of the support member; the pressure-bearing member is arranged between the two side plates of the mounting member; the action member is arranged on the second hinge axis side of the lifting member; the first sliding cam member is connected to the pressure-bearing member and is arranged inside the support member to slide; the second sliding cam member is connected to the action member and is arranged inside the support member to slide; the elastic member is elastically arranged between the first sliding cam member and the second sliding cam member. When the cover body of the opening and closing support device as described above is closed on the device body of the office machine and is in a closed state, the first sliding cam member is pressed against the pressure-bearing member with the strongest force through the elastic member.

[0003] Patent Document 1: Japanese Patent Laid-Open No. 2013-97363.

[0004] Office machines such as copiers that are assembled in the factory and equipped with opening and closing support devices will be shaken or vibrated due to various means of transportation during the process from the manufacturing plant to the customer end, and will be placed in environments with various temperatures. Therefore, the opening and closing support devices used therein will also be placed in the same environment with the first sliding cam member strongly pressed against the pressure-bearing member, which is very likely to cause deformation of the first sliding cam member and the pressure-bearing member. Summary of the invention

[0005] The object of the present invention is to provide an opening and closing support device and an office machine using the same, wherein even if the opening and closing support device is placed in the above state, the first sliding member and the pressure-bearing member thereof will not be deformed due to a strong pressure channel.

[0006] To solve the above problems, the opening and closing support device of the present invention includes a mounting member, a support member, a lifting member, a pressure-receiving member, an operating member, a first sliding cam member, a second sliding cam member and an elastic member. The mounting member comprises a bottom plate portion, left and right side plates and a rear plate portion, wherein the rear plate portion is mounted on the device body side of the office machine; the supporting member comprises a back plate portion, two side plates vertically arranged from the back plate portion and left and right holding plates arranged from the two side plates toward the inner side, and the two side plates are pivotally supported on the two side plates of the mounting member by a first hinge axis so as to be rotatable; the lifting member is mounted on the cover body side, comprises a back plate portion, left and right side plates vertically arranged from the back plate portion and left and right mounting plates arranged from the front end of the two side plates toward the outer side, and the two side plates are pivotally supported on the two side plates of the supporting member by a second hinge axis and can be rotated in the direction opposite to the rotation direction of the supporting member; the pressure-bearing member is arranged between the two side plates of the mounting member; the action member is arranged on the second hinge axis side of the lifting member; the first sliding cam member is connected to the pressure-bearing member and is arranged inside the supporting member so as to be slidable; the second sliding cam member is connected to the action member and is arranged inside the supporting member so as to be slidable; the elastic member is elastically arranged between the first sliding cam member and the second sliding cam member. The opening and closing support device is also provided with a disengaging mechanism, which disengages the contact between the pressure-bearing component and the first sliding cam component.

[0007] To solve the above problems, the disengagement mechanism of the present invention includes a back plate and a pressure member. The back plate is mounted on the back plate of the mounting member and can be adjusted in the front-rear direction; the pressure member has left and right pressure plates, which extend from both sides of the back plate toward the first sliding cam member.

[0008] To solve the above problems, the disengagement mechanism of the present invention further comprises a first pressure member, a back plate and a second pressure member. The first pressure member is mounted on the back plate of the mounting member; the back plate of the disengagement mechanism is mounted on the first pressure member so as to be movable and adjustable in the front-rear direction relative to the first pressure member; the second pressure member has left and right pressure plates, which extend from both sides of the back plate of the disengagement mechanism toward the first sliding cam member.

[0009] In order to solve the above-mentioned problems, the office machine of the present invention uses the above-mentioned opening and closing support device.

[0010] In the present invention, the crimping state of the first sliding cam component and the pressure-bearing component can be arbitrarily disengaged through the disengagement mechanism. Therefore, if an office machine such as a copier assembled in a factory vibrates, shakes, or is in an environment where the temperature changes during the process of reaching the client, the first sliding cam component and the pressure-bearing component can be prevented from deformation in advance.

[0011] In the present invention, the disengagement mechanism is composed of a back plate portion and a pressure component. The back plate portion of the disengagement mechanism is installed on the back plate portion of the mounting component and can be moved and adjusted in the front and rear directions; the pressure component has a pressure plate portion, and the pressure plate portion extends from both sides of the back plate portion of the disengagement mechanism toward the first sliding cam component. Due to the simple structure, the purpose of the present invention can be achieved.

[0012] In the present invention, the disengagement mechanism includes a first pressure component, a back plate portion and a second pressure component, wherein the first pressure component is mounted on the back plate portion of the mounting component; the back plate portion of the disengagement mechanism is mounted on the first pressure component so as to be movable and adjustable in the front-rear direction relative to the first pressure component; the second pressure component has left and right pressure plate portions, which extend left and right from both sides of the back plate portion of the disengagement mechanism toward the first sliding cam component.

[0013] Since the office machine of the present invention uses the opening and closing support device of the above structure, during the process from assembly to delivery to the client, the opening and closing support device can be prevented from malfunctioning due to vibration, shaking during transportation or being in an environment with changing temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic three-dimensional diagram of the appearance of a copier having an opening and closing support device according to the present invention, wherein (a) is an illustration of the copier in a transport state; and (b) is an illustration of the copier in a user-used state.

[0015] Figure 2 It is an exploded perspective view showing an embodiment of the opening and closing support device of the present invention.

[0016] Figure 3 for Figure 2 The opening and closing support device shown is a three-dimensional view of the appearance when it is in the transport state (fully closed).

[0017] Figure 4 for Figure 2 The shown three-dimensional view of the appearance of the opening and closing support device when it is in the user use state (fully opened).

[0018] Figure 5 for Figure 2 The illustrated mounting member is a perspective view of its appearance as seen from the rear side.

[0019] Figure 6 for Figure 2 Schematic diagram of the support member in the embodiment shown, wherein (a) is a left side view; (b) is a stereoscopic view viewed from the oblique front and bottom of (a).

[0020] Figure 7 for Figure 2Schematic diagram of the lifting component in the embodiment shown, wherein (a) is a left side view; (b) is a stereoscopic view viewed from the front of (a).

[0021] Figure 8 for Figure 2 Schematic diagram of the first slide cam member in the embodiment shown, wherein (a) is a perspective view of the appearance viewed from the upper side; (b) is a perspective view viewed from the lower side.

[0022] Fig. 9 for Figure 2 Schematic diagram of the second sliding cam component in the embodiment shown, wherein (a) is an appearance stereoscopic view viewed from the front side; (b) is a bottom view; (c) is a stereoscopic view viewed from the left inner side; and (d) is a stereoscopic view viewed from the right inner side.

[0023] Fig.10 for Figure 2 Schematic diagram of the first pressure member of the disengagement mechanism in the embodiment shown, wherein (a) is a perspective view of the appearance viewed from the back side; (b) is a side view of (a).

[0024] Fig.11 for Figure 2 Schematic diagram of the second pressure member of the disengagement mechanism in the embodiment shown, wherein (a) is a perspective view of the appearance viewed from the back side; (b) is a side view of (a).

[0025] Fig.12 For illustration Figure 2 Schematic diagram of the adjustment method of the dissociation mechanism in the embodiment shown, wherein (a) is an illustration before adjustment; (b) is an illustration during adjustment; and (c) is an illustration after adjustment.

[0026] Fig.13 for Fig.12 Schematic diagram of the dissociation mechanism shown, where (a) is Fig.12 (a) is a longitudinal section of Fig.12 (c) Longitudinal section view. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below according to the embodiments shown in the accompanying drawings.

[0028] The opening and closing support device 5 of the present invention includes a disengaging mechanism 90 described below. The disengaging mechanism 90 can be attached and detached relative to the opening and closing support device 5. For example, the disengaging mechanism 90 can be attached to each opening and closing support device 5 when an office machine 1 such as a copier or a multifunction machine is transported, and the disengaging mechanism 90 can be removed from the opening and closing support device 5 when the client uses the office machine 1.

[0029] Figure 1The following is a schematic perspective view of the appearance of a copier 1 as an example of an office machine. The copier 1 has an opening and closing support device 5, 5 of the present invention, wherein (a) is a schematic diagram of the copier in a transport state; and (b) is a schematic diagram of the copier in a user-used state. Figure 2 It is an exploded perspective view of an embodiment of the opening and closing support device 5 of the present invention. Figure 3 for Figure 2 The opening and closing support device 5 is shown in a three-dimensional view of its appearance when it is in a transport state (fully closed). Figure 4 for Figure 2 The appearance of the opening and closing support device 5 shown in the figure is in the use state (fully opened) when the three axes are orthogonal to each other are the X axis, the Y axis and the Z axis. The X axis is the left-right direction, the Y axis is the front-back direction, and the Z axis is the up-down direction. In addition, the front side is represented by (F) and the rear side is represented by (R). In addition, Figure 1 (a) and Figure 3 A schematic diagram of the opening and closing support device 5 in a transporting state after the disengagement mechanism 90 is installed; Figure 1 (b) and Figure 4 This is a schematic diagram of the opening and closing support device 5 in a user-used state after the disengagement mechanism 90 is removed.

[0030] Figure 1 The copier 1 in the figure is one example of an office machine using a pair of opening and closing support devices 5, 5. Figure 1 As shown in FIG. 2 ( a ), the document pressing plate 4 as a cover performs operations such as conveyance in a closed state relative to the exposure glass 3 . Figure 1 (b) is located at the installation location of the client, and shows that the document pressing plate 4 as one example of a cover is in an open state relative to the device body 2 of the copy machine.

[0031] Although the pair of opening and closing support devices 5, 5 are both indicated by reference numeral 5, the left and right structures may be the same or different. The following description is for the opening and closing support device 5 on the left side, and the description of the opening and closing support device 5 on the right side is omitted.

[0032] like Figure 2 As shown, the opening and closing support device 5 comprises a mounting member 10 constituting a base, a support member 20, a lifting member 30, an elastic member 40 consisting of a pair of compression springs 43, 44, and an elastic force adjustment portion 60. The mounting member 10 is mounted on the device body 2 via a mounting buckle 6.

[0033] In the supporting member 20, the left plate portion 22 and the right plate portion 23 as the two side plates are mounted to the left plate portion 12 and the right plate portion 13 of the mounting member 10 through the first hinge shaft 81 so as to be rotatable. The lifting member 30 is mounted on the outside of the supporting member 20, and the left plate portion 32 and the right plate portion 33 of the lifting member 30 are mounted to the left plate portion 22 and the right plate portion 23 of the supporting member 20 at the free end side of the supporting member 20 through the second hinge shaft 82, and can be rotated in the direction opposite to the rotation direction of the supporting member 20. The manuscript pressing plate 4 is mounted on the lifting member 30. The elastic member 40 is mounted inside the supporting member 20. The elastic member 40 is elastically disposed between the first sliding cam member 41 and the second sliding cam member 42. The first sliding cam member 41 is slidably accommodated inside the supporting member 20 and connected to the pressure member 83, and the pressure member 83 is installed between the left plate portion 12 and the right plate portion 13 of the mounting member 10. The second sliding cam member 42 is also slidably accommodated inside the supporting member 20 and is disposed between the left plate portion 32 and the right plate portion 33 of the lifting member 30. The elastic member 40 is also provided with an elastic force adjustment portion 60.

[0034] like Figure 2 and Figure 4 As shown, the elastic force of the elastic member 40 acts on the second sliding cam member 42, thereby applying pressure to the action member 84, causing the lifting member 30 to be rotated in the opening direction of the original pressing plate 4, and with the second hinge shaft 82 as the fulcrum, it is rotated in the overlapping direction relative to the supporting member 20.

[0035] Figure 5 for Figure 2 The mounting member 10 shown is a perspective view of the appearance as viewed from the back side. Figure 1 to Figure 5 The structure of the mounting member 10 will be described.

[0036] The mounting member 10 includes a bottom plate 11, a left side plate 12, a right side plate 13 and a rear plate 14. The bottom plate 11 is a rectangular flat plate; the left side plate 12 and the right side plate 13 are two side plates, which are respectively arranged on the left and right sides of the bottom plate 11; the rear plate 14 is arranged at the rear end of the bottom plate 11, and is located between the left side plate 12 and the right side plate 13. The left side plate 12, the right side plate 13 and the rear plate 14 are connected to the bottom plate 11 as a whole and are bent. In addition, a mounting hole 14b is formed on the rear plate 14, and the mounting hole 14b corresponds to the insertion hole 94a of the first pressure member 91 described later.

[0037] The bottom plate 11 is formed with an insertion hole 11a and a coupling hole 11b. The insertion hole 11a is for screws (not shown) to be inserted through; the coupling hole 11b is a hole with two holes of different inner diameters. The mounting buckle 6 on the side close to the device body 2 passes through the larger hole of the coupling hole 11b and then snaps into the smaller hole to prevent the mounting member 10 from loosening in the vertical direction. Fig.13 As shown, there is a gap between the head 6 a of the mounting buckle 6 and the surface of the bottom plate portion 11 .

[0038] If the opening and closing support device 5 has an automatic document feeder (ADF), once the installation positions of the opening and closing support devices 5, 5 on the left and right sides in the front-to-back direction are offset, the original document sent from the ADF will be jammed and cannot be fed to the original document feed tray. Therefore, the present invention is provided with a front-to-back position adjustment mechanism T for adjusting the installation position of the original document pressing plate 4 in the front-to-back direction.

[0039] like Figure 2 As shown, the front-to-back direction adjustment plate 15 constituting the front-to-back position adjustment mechanism T has a U-shaped groove 15c formed on a screw receiving plate portion 15b erected in the up-down direction of the base plate portion 15a. In addition, a screw hole 14a corresponding to the U-shaped groove 15c is formed on the rear plate portion 14. The groove 16a of the adjustment screw 16 is engaged with the U-shaped groove 15c, and the screw shaft portion 16b is screwed into the screw hole 14a.

[0040] The left side plate portion 12 and the right side plate portion 13 of the mounting member 10 are formed to be bilaterally symmetrical. On the rear ends of the left side plate portion 12 and the right side plate portion 13, bearing holes 12a and 13a facing each other are formed along the X-axis direction. Figure 5 As shown in FIG. 1 , keyways 12b and 13b are formed on the bearing holes 12a and 13a along the X-axis direction. Figure 2 As shown, a key (not shown) cooperates with the key slots 12b and 13b, and bearings 17b and 17b having flanges 17a and 17a are respectively installed on the bearing holes 12a and 13a from the outside. The left and right bearings 17b and 17b are inserted into the bearing holes 12a and 13a until the flanges 17a and 17a abut against the outside of the left plate portion 12 and the right plate portion 13.

[0041] The first hinge shaft 81 passes through the bearings 17b on the left and right. Spacers 17c and 17c are installed on both ends of the first hinge shaft 81 from the outside of the bearings 17b. The through end of the first hinge shaft 81 passes through the spacers 17c and 17c and then is inserted into the shaft holes 22a and 23a on the left and right plates 22 and 23 of the support member 20, and is fixed by a member such as a joint. Therefore, the first hinge shaft 81 is supported by the bearings 17b on both ends and rotates together with the support member 20. The reason for providing a pair of spacers 17c and 17c is to leave a gap so that the left and right pressure plates 100 and 101 on both sides of the second pressure member 98 can be inserted between the left and right plates 12 and 13 of the mounting member 10 and the left and right plates 22 and 23 of the support member 20 and slide.

[0042] A first pin hole 18 is formed between the rear ends of the left plate portion 12 and the right plate portion 13 of the mounting member 10, further forward than the bearing holes 12a and 13a, and the first pin hole 18 is oppositely arranged along the X-axis direction and fixed with a pressure-bearing member 83. The pressure-bearing member 83 and the first hinge shaft 81 are arranged side by side.

[0043] Figure 6 for Figure 2 The support member 20 in the embodiment shown is a schematic diagram, wherein (a) is a left side view; (b) is a stereoscopic view viewed from the oblique front and bottom of (a). Figure 1 to Figure 6 The structure of the supporting member 20 will be described.

[0044] exist Figure 6 In the figure, the support member 20 includes a back plate portion 21, a left plate portion 22, a right plate portion 23, a left holding plate portion 24, and a right holding plate portion 25. The back plate portion 21 is a rectangular flat plate; the left plate portion 22 and the right plate portion 23 are two side plate portions, which are vertically arranged from the left and right side ends along the X-axis direction of the back plate portion 21; the left holding plate portion 24 and the right holding plate portion 25 are holding plate portions, which are formed from the front ends of the left plate portion 22 and the right plate portion 23 toward the inside. The support member 20 is formed roughly in a rectangular parallelepiped shape. Figure 4 In the embodiment, the elastic member 40 is accommodated in the inner space 26 of the supporting member 20 and is slidable along the Z-axis direction.

[0045] The left side plate portion 22 and the right side plate portion 23 are formed in a symmetrical shape, bent at a right angle inward relative to the back plate portion 21 and extending along the Z-axis direction. The long and narrow left holding plate portion 24 and the right holding plate portion 25 are bent at a right angle from the front end of the left side plate portion 22 and the right side plate portion 23 along the X-axis direction to the direction facing each other. An opening 27 for maintenance is formed between the left holding plate portion 24 and the right holding plate portion 25 facing each other.

[0046] The supporting member 20 is as follows Figure 3As shown, it is installed on the outside of the mounting member 10. On the left side plate portion 22 and the right side plate portion 23 of the supporting member 20, shaft holes 22a and 23a for engaging and fixing the first hinge shaft 81 are formed on the rear side, and shaft holes 22b and 23b facing each other are formed on the front end side. The shaft holes 22b and 23b support the second hinge shaft 82 that passes through the front end side. On the left side plate portion 32 and the right side plate portion 33 of the lifting member 30 installed on the outside of the supporting member 20, first shaft holes 32a and 33a are formed facing each other, respectively, and the two ends of the second hinge shaft 82 are engaged and fixed in the first shaft holes 32a and 33a. The lifting member 30 can rotate relative to the supporting member 20 through the second hinge shaft 82, and can rotate relative to the mounting member 10 together with the supporting member 20 through the first hinge shaft 81.

[0047] Figure 7 for Figure 2 The schematic diagram of the lifting member in the embodiment shown is as follows, (a) is a left side view; (b) is a stereogram of (a). Figure 1 to Figure 7 The structure of the lifting member 30 will be described.

[0048] exist Figure 7 In the figure, the lifting member 30 includes a back plate portion 31, a left plate portion 32, a right plate portion 33, a left mounting plate portion 34, and a right mounting plate portion 35. The back plate portion 31 is a rectangular flat plate; the left plate portion 32 and the right plate portion 33 are two side plate portions, which are vertically arranged from the left and right sides of the back plate portion 31 along the X-axis direction; the left mounting plate portion 34 and the right mounting plate portion 35 are mounting plate portions, which are formed from the front ends of the left plate portion 32 and the right plate portion 33 to the outside. The lifting member 30 is formed roughly in a rectangular parallelepiped shape. The support member 20 is installed in the internal space 36 of the lifting member 30.

[0049] The left plate portion 32 and the right plate portion 33 are bent inward at a right angle relative to the back plate portion 31 and extend along the Z-axis direction. The slender left mounting plate portion 34 and the right mounting plate portion 35 are bent outward at a right angle along the X-axis direction from the front ends of the left plate portion 32 and the right plate portion 33. The original pressing plate 4 is installed on the left mounting plate portion 34 and the right mounting plate portion 35.

[0050] The lifting member 30 is as follows Figure 3 , Figure 4As shown, it is installed on the outer side of the supporting member 20. The front sides of the left plate portion 32 and the right plate portion 33 of the lifting member 30 form first shaft holes 32a and 33a facing each other, and the second hinge shaft 82 is engaged and fixed to the first shaft holes 32a and 33a. In addition, the front sides of the left plate portion 32 and the right plate portion 33 form second shaft holes 32b and 33b facing each other, and the action member 84 is engaged and fixed to the second shaft holes 32b and 33b. The first shaft holes 32a and 33a and the second shaft holes 32b and 33b have a specific interval and are formed along the Z-axis direction. The first shaft holes 32a and 33a are formed between the back plate portion 31 and the second shaft holes 32b and 33b.

[0051] The lifting member 30 is installed on the outer side of the supporting member 20, and the second hinge shaft 82 passes through the shaft holes 22a and 23a of the supporting member 20, and the two ends of the shaft are connected and fixed in the first shaft holes 32a and 33a. The lifting member 30 can be tilted and moved relative to the supporting member 20 through the second hinge shaft 82. After the elastic member 40 is placed in the supporting member 20, the action member 84 connects and fixes the two ends of the shaft in the second shaft holes 32b and 33b.

[0052] On the back plate portion 31 of the lifting member 30, as shown Figure 7 As shown, a screw hole 38 is provided which passes through the back plate portion 31. A height adjustment screw 39 is screwed into the screw hole 38, and the end of the screw abuts against the outer surface of the back plate portion 21 of the support member 20. After the height adjustment screw 39 is screwed in, the lifting member 30 will tilt forward and downward together with the original pressing plate 4, and if the height adjustment screw 39 is turned back to the opposite side, the lifting member 30 will tilt forward and upward together with the original pressing plate 4.

[0053] That is, the lifting member 30 can accommodate the supporting member 20 in the internal space 36 and can rotate relative to other members through the second hinge shaft 82. As described above, except for the case where a heavy original is placed on the exposure glass 3, the elastic force of the elastic member 40 allows the lifting member 30 integrated with the original pressing plate 4 to overlap the supporting member 20. In the state where the original pressing plate 4 is placed on the exposure glass 3, the surface of the original pressing plate 4 must be horizontal in the front-to-back direction relative to the surface of the exposure glass 3. Therefore, the level of the original pressing plate 4 in the front-to-back direction can be adjusted by adjusting the height adjustment screw 39.

[0054] Figure 8 for Figure 2 The schematic diagram of the first slide cam member 41 in the illustrated embodiment is as follows: (a) is a perspective view of the appearance as viewed from the upper side; and (b) is a perspective view as viewed from the lower side. Fig. 9 for Figure 2The schematic diagram of the second sliding cam member 42 in the embodiment shown in the figure, (a) is a perspective view of the appearance viewed from the front side; (b) is a bottom view; (c) is a perspective view viewed from the left inner side; (d) is a perspective view viewed from the right inner side. Figures 1 to 9 The structure of the elastic member 40 will be described.

[0055] The elastic member 40 is as follows Figure 2 As shown, it includes a first sliding cam member 41 as a first elastic member receiving portion, a second sliding cam member 42 as a second elastic member receiving portion, a first compression spring 43 and a second compression spring 44 as the elastic member 40, and an elastic force adjustment portion 60 to be described later. The elastic member 40 is elastically arranged between the first sliding cam member 41 and the second sliding cam member 42 facing each other. The first compression spring 43 is installed in the second compression spring 44. The elastic constant of the first compression spring 43 is smaller than that of the second compression spring 44, and the spring length is also slightly shorter. In this embodiment, two compression springs, the first compression spring 43 and the second compression spring 44, are used as the elastic member 40, but the present invention is not limited to this point, and only one compression spring can also be used.

[0056] The first slide cam member 41 has engagement sections 411a and 411b formed on the left and right sides of the front wall portion 411 of a substantially rectangular parallelepiped. The first slide cam member 41 engages the left and right engagement sections 411a and 411b on the left holding plate portion 24 and the right holding plate portion 25 of the support member 20 and is inserted into the internal space 26. The first slide cam member 41 is tightly received in the internal space 26 and can slide in the longitudinal direction (front-rear direction) of the support member 20.

[0057] like Figure 8 As shown, a bottomed first spring receiving hole 413 having an opening 413 a is formed in the center of the upper surface 412 of the first slide cam member 41 . One end of the first compression spring 43 and the second compression spring 44 are inserted into the first spring receiving hole 413 .

[0058] The outer bottom wall 414 of the first sliding cam member 41 is formed with an arc cam portion 415, which abuts against the pressure member 83. The arc cam portion 415 is formed with a cam surface protruding along the Z-axis direction. In addition, when the manuscript pressing plate 4 rises in the opening direction, the supporting member 20 moves in an inclined direction relative to the mounting member 10 in the vertical direction, and a stopper recess 416 engaged with the first hinge shaft 81 is formed on the outer bottom wall 414 of the first sliding cam member 41. In addition, the first sliding cam member 41 is formed with a left pressed portion 417 and a right pressed portion 418 as pressed portions along the X-axis direction, which are connected and arranged with the outer bottom wall 414 sandwiched therebetween and are a pair of left and right pressed portions.

[0059] The second slide cam member 42 has left and right engagement sections 421a and 421b formed on the left and right sides of the front wall portion 421. The left and right engagement sections 421a and 421b of the second slide cam member 42 are engaged with the left holding plate portion 24 and the right holding plate portion 25 of the support member 20 and inserted into the internal space 26. The second slide cam member 42 is tightly received in the internal space 26 and can slide in the longitudinal direction (front-rear direction) of the support member 20.

[0060] The first slide cam member 41 and the second slide cam member 42 are accommodated in the internal space 26 of the support member 20 with the first compression spring 43, the second compression spring 44 and the elastic force adjustment portion 60 arranged therebetween. The operating member 84 fixed to the lifting member 30 abuts against the outer surface of the upper wall portion 424 of the second slide cam member 42. The urging force of the elastic member 40 is applied to the operating member 84 via the second slide cam member 42.

[0061] The elastic force adjustment part 60 includes left and right cam surfaces 52L and 52R, an elastic force adjustment cam plate 61, a spring plate 70, and an elastic force adjustment screw 80. The left and right cam surfaces 52L and 52R extend in a direction orthogonal to the axial direction of the first hinge shaft 81, and their cam tracks change in height along the elastic force application direction of the first compression spring 43 and the second compression spring 44; the elastic force adjustment cam plate 61 slides together with the cam surfaces 52L and 52R and can move in the front-rear direction along the cam track; the spring plate 70 is arranged between the elastic force adjustment cam plate 61, the first compression spring 43, and the second compression spring 44, and as the elastic force adjustment cam plate 61 moves along the cam track, the spring plate 70 can move together with the elastic force adjustment cam plate 61 in the elastic force application direction of the first compression spring 43 and the second compression spring 44.

[0062] Furthermore, the elastic force adjustment cam plate 61 includes a back plate portion 62, a left foot portion 63L and a right foot portion 63R, a left sliding cam plate portion 64L and a right sliding cam plate portion 64R, and a screw screwing piece 65. The back plate portion 62 is in a slightly rectangular flat plate shape; the planes of the left foot portion 63L and the right foot portion 63R are in a slightly triangular shape, extending downward from the left and right sides of the back plate portion 62 along the Z axis respectively; the left sliding cam plate portion 64L and the right sliding cam plate portion 64R extend outward in the left and right directions at right angles from the inclined ends of the left foot portion 63L and the right foot portion 63R respectively; and the screw screwing piece 65 extends upward in the Z axis direction from the front edge of the back plate portion 62. In addition, the spring plate 70 includes a slightly rectangular flat plate-shaped back plate portion 71, a screw insertion piece 72, and a screw hole 72a.

[0063] The head 80b of the elastic force adjustment screw 80 faces the front of the device body 2, and the head 80b can be turned by a tool such as a hexagonal wrench. When the elastic force adjustment screw 80 is turned to lock into the screw hole 65a of the screw threading piece 65, the elastic force adjustment cam plate 61 will move to the rear in the Y-axis direction (the side opposite to the head 80b of the elastic force adjustment screw 80).

[0064] The spring plate 70, which is restricted from moving in the Y-axis direction, slides together with the elastic force adjusting cam plate 61, and the elastic force adjusting cam plate 61 moves backward along the Y-axis direction and moves downward in the Z-axis direction while resisting the elastic force of the first compression spring 43 and the second compression spring 44 and moving downward in the Z-axis direction. Therefore, the elastic force of the elastic member 40 becomes larger.

[0065] The elastic force of the elastic member 40 can be adjusted between the state where the elastic force adjustment cam plate 61 abuts the left cam surface 52L and the right cam surface 52R of the second slide cam member 42 at the highest position and the state where the screw threading piece 65 abuts the screw insertion piece 72.

[0066] Fig.10 for Figure 2 The schematic diagram of the first pressing member 91 of the disengaging mechanism 90 in the illustrated embodiment, (a) is a perspective view of the appearance viewed from the back side; (b) is a view viewed from the left rear side. Fig.11 for Figure 2 The schematic diagram of the second pressing member 98 of the disengaging mechanism 90 in the illustrated embodiment, (a) is a perspective view of the appearance viewed from the back side; (b) is a view viewed from the right side. Fig.12 for Figure 2 The schematic diagram of the adjustment method of the dissociation mechanism 90 in the embodiment shown is, (a) is a diagram before adjustment; (b) is a diagram during adjustment; (c) is a diagram after adjustment. Fig.13 for Fig.12 The schematic diagram of the dissociation mechanism 90 shown is (a) Fig.12 (a) is a longitudinal section; (b) is a Fig.12 (c) is a longitudinal section. Figures 1 to 13 The structure of the disengaging mechanism 90 will be described.

[0067] The disengagement mechanism 90 includes a first pressure member 91, a second pressure member 98 and an adjustment screw 103. The first pressure member 91 includes a back plate 94, a left plate 95, a right plate 96 and a rear plate 97. The back plate 94 is a rectangular flat plate; the left plate 95 and the right plate 96 are two side plates, which are formed at the left and right side ends of the back plate 94 along the X-axis direction; the rear plate 97 is provided at the lower end of the back plate 94, and is located between the left plate 95 and the right plate 96. The left plate 95, the right plate 96 and the rear plate 97 are formed by bending together with the back plate 94.

[0068] The back plate portion 94 has an insertion hole 94a and a mounting hole 94b. The insertion hole 94a is provided at the middle portion of the back plate portion 94 for inserting a mounting screw 94c, and the mounting hole 94b is provided below the insertion hole 94a for screwing an adjustment screw 103. The first pressure member 91 is mounted on the mounting member 10 by screwing the mounting screw 94c inserted through the insertion hole 94a to the mounting member 10. In addition, the second pressure member 98 is mounted on the first pressure member 91 by the adjustment screw 103.

[0069] The left plate portion 95 and the right plate portion 96 are bent at a right angle inwardly along the Z-axis direction relative to the back plate portion 94. In addition, the left plate portion 95 and the right plate portion 96 have a left abutting portion 95a and a right abutting portion 96a as abutting portions at the front end in the Y-axis (front) direction, which are arc-shaped and abut against the first hinge shaft 81. The rear plate portion 97 is bent from the lower end of the back plate portion 94 along the Y-axis (rear) direction.

[0070] The second pressure member 98 includes a back plate 99, a left pressure plate 100, a right pressure plate 101, and a rear plate 102. The back plate 99 is a rectangular flat plate; the left pressure plate 100 and the right pressure plate 101 are two side plates, which are formed at the left and right side ends of the back plate 99 along the X-axis direction; the rear plate 102 is formed at the lower end of the back plate 99 and is located between the left pressure plate 100 and the right pressure plate 101. The left pressure plate 100, the right pressure plate 101 and the rear plate 102 are formed by bending together with the back plate 99.

[0071] The back plate portion 99 has an insertion hole 99a and a support portion 99b. The insertion hole 99a is provided in the middle portion of the back plate portion 99 for the adjustment screw 103 to be inserted therethrough; the support portion 99b is arc-shaped and supports the mounting screw 94c at the upper end of the back plate portion 99. Since the adjustment screw 103 inserted through the insertion hole 99a is screwed to the first pressure member 91, the second pressure member 98 can be mounted on the first pressure member 91. In addition, when the adjustment screw 103 is locked, the second pressure member 98 moves along the Y axis in a direction approaching the first pressure member 91, and when the adjustment screw 103 is loosened, the second pressure member 98 moves along the Y axis in a direction away from the first pressure member 91. In other words, the second pressure member 98 is mounted on the first pressure member 91 via the adjustment screw 103 so as to be able to move in the Y axis direction relative to the first pressure member 91.

[0072] The left pressure plate portion 100 and the right pressure plate portion 101 are long and extend in the Z-axis direction, and are bent at a right angle to the inside relative to the back plate portion 99. In addition, the left pressure plate portion 100 and the right pressure plate portion 101 have a left pressure portion 100a and a right pressure portion 101a as pressure portions at the front end in the Y-axis (front) direction, and press the first slide cam member 41. The rear plate portion 102 is bent from the lower end of the back plate portion 99 in the Y-axis (rear) direction.

[0073] The following references Figures 10 to 13 The operation method of the disengaging mechanism 90 is described. First, the mounting screw 94c inserted through the insertion hole 94a of the first pressure member 91 is screwed into the mounting hole 14b of the rear plate portion 14 of the mounting member 10, thereby mounting the first pressure member 91 to the mounting member 10. Fig.12 As shown in (a), the adjustment screw 103 inserted through the insertion hole 99a of the second pressure member 98 is screwed into the mounting hole 94b of the first pressure member 91, thereby mounting the second pressure member 98 on the first pressure member 91. Then, in the state where the second pressure member 98 is mounted on the first pressure member 91, the adjustment screw 103 is further tightened to move the second pressure member 98 toward the first pressure member 91; the adjustment screw 103 is loosened to move the second pressure member 98 away from the first pressure member 91. At this time, the lower surface of the rear plate portion 102 of the second pressure member 98 slides and moves on the upper surface of the rear plate portion 97 of the first pressure member 91.

[0074] like Fig.12 As shown in (b), the adjusting screw 103 is tightened to move the second pressure member 98 toward the first pressure member 91, and the pressure portion (left pressure portion 100a and right pressure portion 101a) of the second pressure member 98 abuts against the pressed portion (left pressed portion (not shown) and right pressed portion 418) of the first sliding cam member 41. Fig.12 As shown in (c), if the adjustment screw 103 is further tightened, the left pressure portion 100a and the right pressure portion 101a will press the left pressed portion 417 and the right pressed portion 418, and the first slide cam member 41 will move away from the pressure receiving member 83, so that the first slide cam member 41 and the pressure receiving member 83 are separated.

[0075] That is, the disengagement mechanism 90 is as follows before adjustment: Fig.13 As shown in (a), the left pressure portion 100a and the right pressure portion 101a of the second pressure member 98 do not press the pressed portions 417 and 418 of the first slide cam member 41, and the first slide cam member 41 is pressed against the pressure receiving member 83 by the elastic force of the first compression spring 43 and the second compression spring 44, generating a hinge torque in the opening and closing support device 5. If the disengagement mechanism 90 is adjusted, Fig.13As shown in (b), the left pressing portion 100a and the right pressing portion 101a of the second pressing member 98 press the left pressed portion 417 and the right pressed portion 418 of the first sliding cam member 41, and the first sliding cam member 41 is separated from the pressed member 83, thereby avoiding the hinge torque generated in the opening and closing support device 5.

[0076] Thus, in this embodiment, since the disengagement mechanism 90 is provided to disengage the elastic member 40 from the pressure member 83, even if the finished product of the office machine 1 is kept in a closed state for a long time during transportation, the hinge torque can be avoided and the deformation of the opening and closing support device 5 can be prevented.

[0077] Furthermore, since the first slide cam member 41 is separated from the pressure-receiving member 83 , the transmission of the hinge torque is disconnected, and the load on the opening and closing support device 5 can be reduced.

[0078] Furthermore, the left pressure portion 100a and the right pressure portion 101a of the second pressure member 98 will apply pressure to the left pressed portion 417 and the right pressed portion 418 of the first sliding cam member 41. By separating the first sliding cam member 41 from the pressure-receiving member 83, the hinge torque can be effectively suppressed from acting on the opening and closing support device 5 for a long time.

[0079] In addition, because the first pressure member 91 is installed from the rear end outside of the mounting member 10, and the second pressure member 98 is overlapped on the first pressure member 91 and installed in a screw-locking manner, the client can easily remove the disengagement mechanism 90 before use.

[0080] Then, since the disengagement mechanism 90 is detachably mounted on the opening and closing support device 5 by screws, it can be removed and reused after the office machine is installed at the installation location of the client, which helps to reduce costs.

[0081] Furthermore, the disengaging mechanism 90 of the present invention may be structured without the first pressing member 91 , and the second pressing member 98 may be mounted on the rear plate 14 of the mounting member 10 so as to be movable in the front-rear direction.

[0082] The opening and closing support device 5 of the present invention has the above-mentioned structure and is suitable for use as an opening and closing device for a cover such as a manuscript pressing plate on office machines such as copiers, multifunction machines, printers, fax machines, scanners, etc.

Claims

1. An opening and closing support device, comprising: The mounting member comprises a bottom plate portion, left and right side plate portions and a rear plate portion, wherein the rear plate portion is mounted on the device body side of the office machine; A supporting member having a back plate portion, two side plates vertically arranged from the back plate portion, and left and right holding plates arranged inward from the two side plates, wherein the two side plates of the supporting member are pivotally supported on the two side plates of the mounting member via a first hinge axis so as to be rotatable; A lifting member, which is installed on the side of the cover body, has a back plate, left and right side plates vertically arranged from the back plate, and left and right mounting plates arranged from the front ends of the side plates to the outside, and the side plates of the lifting member are axially supported on the side plates of the supporting member through a second hinge shaft and can rotate in a direction opposite to the rotation direction of the supporting member; A pressure-bearing member disposed between the two side plate portions of the mounting member; an action member, which is arranged on the second hinge axis side of the lifting member; A first sliding cam member connected to the pressure receiving member and arranged inside the supporting member to slide; A second sliding cam member connected to the actuating member and arranged inside the supporting member to slide; an elastic member elastically disposed between the first sliding cam member and the second sliding cam member; as well as A disengaging mechanism is provided to disengage the contact between the pressure receiving member and the first slide cam member.

2. According to the opening and closing support device according to claim 1, the disengagement mechanism includes a back plate portion and a pressure component, the back plate portion is installed on the back plate portion of the mounting component and can be moved and adjusted in the front and rear directions; the pressure component has left and right pressure plate portions, and the pressure plate portions extend from both sides of the back plate portion toward the first sliding cam component.

3. According to the opening and closing support device according to claim 1, the disengagement mechanism includes a first pressure component, a back plate portion and a second pressure component, the first pressure component is installed on the back plate portion of the installation component; the back plate portion of the disengagement mechanism is installed on the first pressure component so as to be movable and adjusted in the front-rear direction relative to the first pressure component; the second pressure component has left and right pressure plate portions, and the pressure plate portions extend from both sides of the back plate portion of the disengagement mechanism toward the first sliding cam component.

4. An office machine using the opening and closing support device according to any one of claims 1 to 3.

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