JP2019143738A - Lid body opening/closing device and a variety of apparatuses - Google Patents

Abstract

Provided is a lid opening / closing device that can open a lid in an open state without providing a large dead space between an apparatus main body and a wall on the back side thereof. An attachment member attached to an apparatus main body, a support member rotatably mounted on the attachment member via a first connection member, and a second connection member provided on a free end side of the support member. A lifting member 6 rotatably mounted in a direction different from that of the supporting member 2 via the support member 2, and an operating member 9 provided at a position where the lifting member 6 turns with the rotation of the lifting member 6 about the second connecting member 4. An elastic member 12 that urges the lift member 6 in a direction overlapping with the support member 2 and urges the support member 2 in the opening direction of the lid by elastically providing between the operating member 9 and the support member 2. , Wherein the side plates 21b, 21b raised from the mounting bases 21a, 21a attached to the lid side are different from the lift member 6 on the free end sides of the side plates 2b, 2b of the support member 2. Axes rotatably in the direction It includes a bracket member 21. [Selection diagram] FIG.

Description

  INDUSTRIAL APPLICABILITY The present invention relates to a lid opening / closing device and various types using the lid opening / closing device suitable for opening / closing a lid of furniture such as a document pressure plate or cabinet of office equipment such as a copying machine or a printing machine. Regarding equipment.

  2. Description of the Related Art Conventionally, as a lid opening / closing device used for a document crimping plate opening / closing device of office equipment such as a copying machine, as described in, for example, Patent Document 1 below, A mounting member having raised both side plates, a back plate and both side plates bent from the back plate, and the both side plates are pivotally attached to both side plates of the mounting member via a first connecting member. A supporting member; a back plate; both side plates bent from the back plate; and an attachment base of an original cover plate bent from the both side plates. A lift member pivotally mounted in a direction different from the support member via a connecting member, and an actuating member provided at a position that pivots with rotation about the second connecting member in the lift member; , The mounting part The pressure receiving member provided between the both side plates of the sheet and the elastic member between the pressure receiving member and the actuating member, so that the supporting member is pressed against the document while urging the lift member in a direction overlapping the supporting member. A lid opening / closing device having an elastic member that biases the plate in the opening direction is well known, and office equipment using the lid opening / closing device is well known. This type is now widespread and is currently employed in office equipment such as most copiers.

JP 2013-97363 A

  In the conventionally known lid opening / closing device and office equipment configured as described above, since most of the document crimping plates C attached to the lid opening / closing device B are equipped with an automatic document feeder, the document crimping plate C itself is used. There is a considerable height (thickness) because of the built-in automatic document feeding mechanism. Then, when the copying machine A is installed on the wall K side of the installation location (mostly this is the installation method), the following inconvenience arises, and countermeasures are required.

  That is, when a thick document (not shown) (notably a thick document such as a book) is mounted on the document placement table d of the apparatus main body D, or a contact (not shown) of the document placement table d. When the glass is removed and the inside of the copying machine A is inspected and repaired, it is necessary to open the original cover C to the fully open state (90 degrees plus). Then, as shown in FIG. 15, it is inevitable that the original pressing plate C protrudes to the rear portion of the apparatus main body D, so that a so-called dead space DS is generated between the rear wall portion K and the original body. .

  Accordingly, an object of the present invention is to prevent the lid from projecting to the rear part of the apparatus main body even when the lid (original pressure bonding plate) is fully opened, and to connect various devices installed on the wall side to the wall side. The object is to provide a lid opening / closing device that can eliminate the dead space generated between them, and various devices (office equipment) using the lid opening / closing device.

  In the description of the present specification and claims, the field in which the opening / closing device is used is not limited to office equipment such as a copying machine. Therefore, the original pressure plate is referred to as a lid, and the office equipment is referred to as various equipment. A lid opening / closing device is a lid opening / closing device that attaches the lid to various devices.

  In order to achieve the above-mentioned object, a lid opening / closing device according to claim 1 of the present invention is provided with an attachment member attached to the apparatus main body side, and a shaft that is rotatable to both side plates of the attachment member via a first connecting member. A support member that is attached, a lift member that is rotatably attached to both side plates on the free end side of the support member via a second connecting member in a direction opposite to the support member, and provided between the side plates of the mounting member A cam slider slidably provided in the support member in contact with the pressure receiving member, and a spring slidably provided in the support member in contact with an operating member provided on a free end side of the lift member with respect to the support member A receiving member; an elastic member provided between the cam slider and the spring receiving member; and the lift member to both side plates of the lift member and both side plates of the support member via the second connecting member; The bracket member is attached to the original plate that is pivotally mounted in the opposite direction. The bracket member operates together with the lift member in a predetermined rotation angle range of the lift member. It is characterized by having a rotation control means configured to be able to rotate independently when the rotation angle exceeds.

  In this case, a second aspect of the present invention relates to the rotation control means for the bracket member, the first rotation restriction means provided between the support member and the mounting member, the lift member and the bracket member. It is characterized by comprising the second rotation restricting means provided therebetween and the elastic force of the elastic member acting on the operating member.

  Further, according to a third aspect of the present invention, the first rotation restricting means according to the second aspect of the present invention is provided on the rear side of the mounting member so as to come into contact with the rear side at a predetermined rotation angle of the support member. It is characterized by comprising a stopper part.

  Further, according to a fourth aspect of the present invention, the second rotation restricting means according to the second aspect of the present invention is provided with engaging portions provided on both side plates of the bracket member so as to engage with both side plates of the lift member from one direction. It is characterized by comprising.

  Furthermore, the invention of claim 5 according to the present invention is a projection, wherein the second rotation restricting means is provided on the lift member and abuts against an engaging portion provided on the bracket member to restrict the rotation of the bracket member. It is characterized by comprising.

  According to a sixth aspect of the present invention, the bracket member has both side plates that connect the opposite side plates on the second connecting member side, and the mounting base of the bracket member is bent outward from the opposite side plates. Have a different shape.

  In the invention of claim 7, the bracket member transmits the rotation of the bracket member in the closing direction around the second connecting member to the lift member and the rotation of the opening direction to the lift member 6. It has an engaging part that does not

  According to an eighth aspect of the present invention, the bracket member is provided outside the both side plates of the lift member, and the engaging portion of the both side plates of the bracket member is engaged with the both side plates of the lift member. It is formed by bending a part inward.

  In a ninth aspect of the present invention, there is provided friction generating means for generating a frictional force as the bracket member rotates with respect to the lift member.

  In the tenth aspect of the invention, there are various devices using the lid opening / closing device according to each of the above-mentioned inventions.

  According to the present invention, the cover member (original pressure plate) is opened by rotating the bracket member with respect to the support member while assisting the elastic member from the closed state and lifting the original pressure plate obliquely. Open up to an angle. For this reason, the lid (original pressure plate) is in the opened state with the center of gravity of the lid (original pressure plate) positioned closer to the front than when the support member is simply rotated to the open angle. Can be opened. Therefore, without providing a large dead space between the apparatus main body and the back side wall, the interference between the apparatus main body and the back side wall can be avoided, and the lid (original pressure plate) can be opened. It is possible to provide a lid opening / closing device that can be opened until then, and office equipment using the lid opening / closing device.

  In the invention of claim 2, the bracket member is pivotally attached to the support member and the lift member using the existing second connecting member. For this reason, the total number of parts can be reduced as compared with the case of using another new second connecting member, and the lid opening / closing device having high strength can be configured to be small and light.

  In the invention of claim 3, the angle of the opened state of the original cover is precisely set by the second rotation restricting means. In addition, since the posture of the original cover is rotated to the open angle by the bracket member after the elastic member is assisted to move the center of gravity of the original cover to a high position, it is heavy even without the support by the elastic member. The original cover can be rotated with a light operating force.

  According to the invention of claim 4, the highly reliable first rotation restricting means can be realized with a simple structure. In the invention of claim 5, the reliable second rotation restricting means can be realized with a simple structure. According to the sixth aspect of the present invention, a precise and reliable bracket member can be manufactured at low cost using a sheet metal without welding or assembling work.

  According to the seventh aspect of the present invention, the original pressure plate and the support member can be integrally moved in conjunction with the rotation of the original pressure plate by assisting the elastic member. As will be described later, when the thick original is pressed by the original pressing plate, the engaging portion engages with the lift member, and the bracket member and the lift member resist the biasing of the elastic member with respect to the support member. As a result, the original pressing plate can press the thick original horizontally.

  In the invention of claim 8, the engagement portion can be easily made small and light in the bracket member formed of sheet metal.

  According to the ninth aspect of the present invention, it is possible to realize a so-called free stop function in which the document pressing plate can be stopped at an arbitrary angle between the predetermined angle and the open state by the friction mechanism.

  According to the tenth aspect of the present invention, it is possible to provide various devices that can omit the installation space.

It is a perspective view of the part of the upper part side of the compound machine which is an example of office equipment using the lid opening and closing device concerning the invention in this application. It is a side view which shows the state which attached the cover body opening / closing apparatus which concerns on this invention to the multifunction machine. It is the side view which expanded the cover body opening / closing apparatus shown in FIG. FIG. 3 is a front view of the lid opening / closing device shown in FIG. 2 before being attached to the multifunction machine. It is the perspective view which looked at the cover body opening / closing apparatus shown in FIG. 4 from the diagonal direction. It is a disassembled perspective view of the cover body opening / closing apparatus which concerns on this invention. The connection member and action | operation member of the cover body opening / closing apparatus which concern on this invention are shown, (a) is a perspective view of a 1st connection member, (b) is a perspective view of a 2nd connection member, (c) is a perspective view of an operation member. It is. It is explanatory drawing of a structure of the bracket member of Example 1, (a) is a top view, (b) is a front view, (c) is a side view. It is a longitudinal cross-sectional view of the cover body opening / closing apparatus shown in FIG. The state which opened the cover body opening / closing apparatus shown in FIG. 3 to 30 degree | times is shown, (a) is the side view, (b) is the longitudinal cross-sectional view. The state which opened the cover body opening / closing apparatus shown in FIG. 3 to 60 degree | times is shown, (a) is the side view, (b) is the longitudinal cross-sectional view. The state which opened the cover body to 90 degree | times using the cover body opening / closing apparatus shown in FIG. 3 is shown, (a) is the side view, (b) is the longitudinal cross-sectional view. In the lid opening / closing apparatus shown in FIG. 3, the operation when the original is a thick original such as a book will be described, (a) is a side view thereof, and (b) is a longitudinal sectional view thereof. It is explanatory drawing at the time of installing the multifunctional machine using the cover body opening / closing apparatus according to the present invention near the wall and fully opening the original cover. It is explanatory drawing at the time of installing the multifunctional machine using a conventionally well-known lid body opening / closing apparatus near a wall, and fully opening a document crimping plate.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  In the following description, an embodiment of a lid opening / closing device used in a copying machine or a multifunction device will be described. However, as described above, the lid opening / closing device described below is a printing device other than a copying machine or a multifunction device. It can be used as office equipment such as a machine, a facsimile machine, a scanner, or a wide lid opening / closing device such as a cabinet. Accordingly, the subject of the present invention is not limited to the lid opening / closing device used in a copying machine or a multifunction machine. Therefore, the document crimping plate is used as the lid, and the title of the invention is the lid opening / closing device. Various devices are used. In the description of the present specification and claims, these terms may be mixed, but the three have the same meaning.

  Further, the terms such as the mounting member 1, the support member 2, the lift member 6, the pressure receiving member 5, the actuating member 9, the elastic member 12, and the bracket member 21 described in the present specification and claims are examples of the embodiment. It is not limited to the specific mounting member 1, support member 2, lift member 6, actuating member 9, elastic member 12, and bracket member 21 used as the above, but has a broader concept than that described below.

  According to the drawing, as shown in FIG. 1, an automatic document feeder c is attached on the apparatus main body D of the copying machine A according to the present invention via a pair of lid opening / closing apparatuses B and B ′. A lid C is attached so as to be openable and closable. Of the pair of lid opening / closing devices B and B ′, the lid opening / closing device B on the left side in the figure has a large load applied during the opening / closing operation on the heavy mechanism side of the automatic document feeder c. 12) adopts a double coil spring system in which two coil springs are juxtaposed. On the other hand, the lid opening / closing device B ′ on the right side in the figure is not shown because the load is relatively small, but the elastic member (12) is a single coil spring system comprising one coil spring. Or, one using a torsion spring is employed. However, since the configuration around the bracket member (6), which is the main part of the present invention, is basically the same configuration, the left lid opening / closing device B will be described in the following description. In addition, since the weight of the cover C is increased in a large-sized multifunction machine or other office equipment, the diameter of the coil spring is not limited regardless of whether it is two or one. Different coil springs may be used concentrically.

  Next, as shown in FIG. 2, in the closed state of the cover C, the cover C is parallel to the document placement table d of the apparatus body D and is in close contact with the document placement table d to leak light. Blocking. As shown in FIG. 14, when the lid opening / closing device B according to the present invention is used, the lid C does not protrude from the rear portion of the device body D when the lid C is fully opened (90 degrees). When the machine is installed in contact with a wall or the like, it is not necessary to take a space when the lid C protrudes from the rear part, so that the installation space for the office equipment can be omitted.

  As shown in FIGS. 3 to 6, the lid opening / closing device B according to the present invention is provided with an attachment member 1 attached to the device body D side, and both side plates b and 1 b of the attachment member 1 via a first connecting member 3. The support member 2 rotatably attached to the shaft and the both side plates 2b and 2b on the free end side of the support member 2 are rotatably attached to the support member 2 via the second connecting member 4 in the opposite direction. A lift member 6; a cam slider 10 slidably provided in the support member 2 in contact with a pressure receiving member 5 provided between the side plates 1b, 1b of the mounting member 1; and the support of the lift member 6. A spring receiving member 11 slidably provided in the support member 2 provided in contact with the operating member 9 provided on the free end side with respect to the member 2, and elastically provided between the cam slider 10 and the spring receiving member 11. Elastic member 12 and said lift The lid C, which is pivotally attached to both side plates 6b, 6b of the material 6 and both side plates 2b, 2b of the support member 2 via the second connecting member 4 so as to be rotatable in the opposite direction to the lift member 6. The bracket member 21 operates together with the lift member 6 within a predetermined rotation angle range of the lift member 6, and rotates independently when the lift member 6 exceeds a predetermined rotation angle. And a rotation control means configured to be able to do this.

  The mounting member 1 includes a mounting base 1a mounted on the apparatus main body D, and both sides of the mounting base 1a that are bent in an upward direction (including a substantially orthogonal direction) perpendicular to the mounting base 1a. The plates 1b and 1b and the locking pieces 1j provided on both sides of the mounting base 1a are bent from one end (rear end) of the mounting base 1a in an upward direction (including a direction substantially perpendicular) to the mounting base 1a. 1j is constituted by a substantially rectangular rear plate 1c locked in locking grooves 1i, 1i provided on both side plates 1b, 1b of the mounting member 1. A stopper plate 8 for restricting the maximum angle (60 °) of the support member 2 when the lid C is opened and closed as the first rotation restricting means E is attached to the rear plate 1c via attachment screws 8a and 8a. It has been.

  The first connecting member mounting holes 1d and 1d are through holes to which the first connecting member 3 is rotatably mounted. In the embodiment, the first connecting member 3 is a metal round bar provided with circumferential grooves 3d and 3d at both ends thereof, as shown in FIG. The first connection member insertion holes 2e and 2e of the support member 2 are connected through the bearing holes 3e and 3e of the bearing members 3a and 3a attached to the attachment holes 1d and 1d. The E-rings 3c and 3c are fitted into the circumferential grooves 3d and 3d provided at both ends protruding from the holes 2e and 2e through the washers 3b and 3b, so that the retaining is regulated.

  In addition, this 1st connection member 3 divides this into two, and connects both the side plates 1b and 1b of the mounting member 1 and the two side plates 2b and 2b of the support member separately with a common axis. Also good. Moreover, the case where each both-sides board 1b, 1b * 2b, 2b is separately connected by an eyelet is also included.

  The pressure receiving member mounting holes 1e and 1e are through holes in which the pressure receiving member 5 is mounted in a non-rotating manner in the embodiment. The pressure receiving member 5 passes through a metal pressure receiving pin 5a pivoted between both side plates 1b and 1b of the mounting member 1 and an insertion hole 5d provided in the axial direction with respect to the pressure receiving pin 5a. And a synthetic resin rotating roller 5b attached rotatably. The pressure receiving pin 5a is fixed to the pressure receiving member mounting holes 1e and 1e of the mounting member 1 after being inserted into the pressure receiving member mounting holes 1e and 1e. Note that the pressure receiving pin 5a may be regulated to prevent the pressure receiving pin 5a from being removed using an E-ring, or may be rotatably attached to the pressure receiving member attachment holes 1e and 1e.

  The rotating roller 5 b has a cylindrical side surface abutted against the cam portion 10 a of the cam slider 10. Although not shown, lubricating grease is applied to the contact surface between the cam portion 10a and the rotating roller 5b. Note that the material of the rotating roller 5b is not limited to synthetic resin, and may be sintered metal, ceramic, machined product, or the like.

  In addition, the pressure receiving member 5 can comprise the pressure receiving pin 5a and the rotation roller 5b integrally or integrally, and can be rotatably attached to the pressure receiving member mounting holes 1e and 1e. Further, the cam portion may be formed into a curved round shape, and the sliding contact portion side where the rotating roller contacts the cam portion may be configured to have a surface contact with the round shape of the cam portion. Further, the pressure receiving member 5 may be a member in which a metal shaft is covered with a synthetic resin cylinder, and includes a member in which a fixing piece projects from the cylinder toward the first connecting member.

  The attachment holes 1g and 1h provided in the attachment base 1a are through holes through which attachment screws 1m and attachment buttons 1n are inserted when the attachment base 1a is attached to the apparatus main body a.

  The supporting member 2 includes a back plate 2a, both side plates 2b and 2b bent downward from both ends of the back plate 2a, and a holding plate 2c formed by bending inward from the lower ends of both side plates 2b and 2b. The two side plates 2b and 2b are rotatably connected to the side plates 1b and 1b of the mounting member 1 by the first connecting member 3 as described above. A lift member 6 is pivotally attached to the free ends of the side plates 2b and 2b via the second connecting member 4 so as to be able to rotate in the direction opposite to the support member 2, as shown in FIGS. As shown, guide grooves 2d and 2d are provided in which both end sides of the operating member 9 enter when the lift member 6 is reversed.

  The second connecting member insertion holes 2f and 2f are through holes through which the second connecting member 4 is inserted. As shown in FIG. 7B, the second connecting member 4 is a metal round bar provided with a D-cut 4d at one end and formed with circumferential grooves 4c and 4c at both ends. The shaft portion 4 a passes through the second connecting member insertion holes 2 f and 2 f of the support member 2, the second connecting member connecting holes 6 d and 6 d of the lift member 6, and the second connecting member connecting holes 21 e and 21 e of the bracket member 21. Thus, the lift member 6 and the bracket member 21 are coupled to the support member 2 so as to be rotatable in a direction opposite to the rotation direction of the support member 2 with respect to the mounting member 1. Arc-shaped objects provided on the sides of the second connecting member insertion holes 2f, 2f of the side plates 2b, 2b are spacer convex portions 2m, 2m.

  The second connecting member 4 has circumferential grooves 4c, 4c at both ends, and bearing members 4s, 4s and spacers between the second connecting member connecting holes 6d, 6d and the second connecting member connecting holes 21e, 21e. 4p and 4p are interposed. Here, the bearing members 4 s and 4 s are for bearing the second connecting member 4, and the spacers 4 p and 4 p are for ensuring the distance between the lift member 6 and the support member 2 equally on the left and right. is there. The second connecting member 4 is restrained against the lift member 6 by fitting the E-rings 4b and 4b into the circumferential grooves 4c and 4c at both ends protruding from the second connecting member connecting holes 21e and 21e. Yes.

  The second connecting member 4 is also divided into two parts so that the side plates 2b, 2b, 6b, 6b, 21b, and 21b of the support member 2, the lift member 6, and the bracket member 21 have a common axis. Can be linked separately. In some cases, it may be eyelet. Further, friction torque generating means is provided between the side plates 2b, 2b of the support member 2 and the side plates 6b, 6b of the lift member 6 and the side plates 21b, 21b of the bracket member 21 at the portion connected by the second connecting member 4. A friction mechanism including a friction washer or a spring washer having a known configuration may be provided. If comprised in this way, when opening and closing of the cover body C, it can be expected that only the bracket member 21 is more reliably prevented and a stable opening and closing operation is performed.

  As described above, the first connecting member insertion holes 2e and 2e are through holes through which the first connecting member 3 is inserted. The stopper holes 2g and 2g are through holes for inserting a stopper pin (not shown) and holding the elastic member 12 in a compressed state between the cam slider 10 and the spring receiving member 11 when the support member 2 is assembled. .

  The relief grooves 2h and 2h of the support member 2 are through-grooves whose one ends are opened at the rear end portion of the back plate 2a. When the lid C is opened, the stopper plate 8 is formed as shown in FIGS. A space into which the stopper pieces 8f and 8f enter is formed.

  The lift member 6 includes a back plate 6a and both side plates 6b and 6b bent from both ends of the back plate 6a in a downward direction (including a direction substantially perpendicular) to the back plate 6a. 4 and 5, the support member 2 is configured to be covered from the outside. On the side where the lift member 6 is pivotally attached by the second connecting member 4, a rod-like actuating member 9 is attached in a non-rotating manner.

  In the embodiment, as shown in FIG. 7C, the actuating member 9 is formed of a metal round bar and has a D-cut 9c on one end side. The actuating member 9 is fixed to the lift member 6 by penetrating the actuating pin connecting holes 6e, 6e and caulking both ends.

  As the actuating member 9, a metal round bar may be used as it is, or a cylindrical contact member may be attached to the metal round bar, and the cross-sectional shape of the cylindrical contact member may be an ellipse other than a circle or It is good also as a rectangle. The actuating member 9 may be further rotatably attached between the side plates 6b and 6b. Further, the lift member 6 may be provided with a top plate, and the top plate may be bent inward to constitute the operating member, or may be made of synthetic resin. It may be attached between the side plates 6b, 6b or on the top plate or the back plate 6a.

  The escape grooves 6g and 6g of the lift member 6 are through grooves having one end opened at the rear end of the back plate 6a. When the lid C is opened, the stopper pieces 8f and 8f of the stopper plate 8 shown in FIG. Forms a space for the

  The height adjusting means 7 includes an adjusting screw 7a and a nut 7b attached to the back plate 6a. The height adjusting means 7 finely adjusts the height (inclination) of the closed cover C with respect to the document placing table d (contact glass) so that the cover C is evenly placed on the document placing table d (contact glass). It is set and fixed so as to be crimped to the upper surface.

  As shown in FIG. 8 and the like, a cam slider 10 and a spring receiving member 11 are held in the support member 2 in a C-shaped cross section surrounded by a back plate 2a, side plates 2b and 2b, and holding plates 2c and 2c. Are accommodated so as to be slidable in the extending and contracting direction of the elastic member 12.

  The cam slider 10 and the spring receiving member 11 are each formed in a bottomed cylindrical shape having a substantially rectangular cross section, and are housed in the support member 2 so that the openings 10b and 10b and the openings 11b and 11b face each other. Yes.

  The cam portion 10 a of the cam slider 10 is in pressure contact with the pressure receiving member 5. As shown in FIGS. 6 and 9, a cam portion 10 a that is inclined in one direction and has a flat upper surface is provided at the end of the cam slider 10 on the pressure receiving member 5 side, and covers the exposed side of the pressure receiving member 5. A portion 10c is provided.

  The contact portion 11 a of the spring receiving member 11 is in pressure contact with the operating member 9. At the end of the spring receiving member 11 on the side of the actuating member 9, as shown in FIG. However, the contact portion 11a is not essential, and may be a flat portion on one surface.

  The cam slider 10 is pressed by the pressure receiving member 5 fixed to the mounting member 1 to pressurize and compress the elastic member 12. When the support member 2 rotates relative to the mounting member 1 about the first connecting member 3 in the direction of opening the lid C, the cam slider 10 moves in the direction of the arrow R3 and the compression of the elastic member 12 is relaxed. . Therefore, the elastic member 12 reduces the force required to lift the lid (C) by applying an assist force to the support member 2 and the lift member 6.

  As shown in FIG. 6, an elastic member 12 composed of large-diameter coil springs 12a and 12a and small-diameter coil springs 12b and 12b is held between the cam slider 10 and the spring receiving member 11 under pressure. The elastic member 12 realizes a large elastic coefficient by superimposing small-diameter coil springs 12b and 12b on the inner side of the large-diameter coil springs 12a and 12a. The cam slider 10 and the spring receiving member 11 are respectively connected to each other. It is energizing in the direction of separating.

  The elastic member 12 is elastically mounted while being accommodated in the support member 2 with both end portions inserted into the openings 10b and 10b of the cam slider 10 and the openings 11b and 11b of the spring receiving member 11. . The number of coil springs constituting the elastic member 12 may be one or two or more, and the arrangement may be parallel or series. For example, it is possible to use two in parallel, two in series, only one, etc.

  8A and 8B are explanatory views of the configuration of the bracket member of the first embodiment, where FIG. 8A is a plan view, FIG. 8B is a front view, and FIG. 8C is a side view. FIG. 9 is an explanatory diagram of a closed state of the lid opening / closing device according to the first embodiment. FIG. 10 is an explanatory diagram of a state in which the lid opening / closing device of Example 1 is opened to 30 degrees, and FIG. 11 is an explanatory diagram of a state in which the lid opening / closing device of Example 1 is opened to 60 degrees.

  As shown in FIG. 14, in the copying machine A according to the first embodiment, which is an example of various devices such as a multifunction machine, the support member 2 stops at a position rotated by 60 degrees with respect to the mounting member 1, and the bracket starts from this position. By rotating the member 21 by 30 degrees, the cover body C is rotated by 90 degrees in total with respect to the apparatus main body D, and the open state of the cover body C is obtained. And in order to perform rotation control of such a support member 2 and the bracket member 21, the 1st rotation control means E which controls the rotation angle with respect to the attachment member 1 of the support member 2 at 60 degree | times, and the bracket member with respect to the support member 2 And a second rotation restricting means F for restricting the rotation angle of 21 to 30 degrees. Here, the combination of numerical values of 60 degrees + 30 degrees = 90 degrees is an example, and can be arbitrarily designed such as 50 degrees + 50 degrees = 100 degrees.

  As shown in FIG. 9 with reference to FIG. 6, in the lid opening / closing device B according to the first embodiment, the bracket member 21 includes mounting bases 21 a and 21 a attached to the lid (B), and the mounting bases 21 a and 21 a. Both side plates 21b, 21b are raised, and these side plates 21b, 21b are attached to the free ends of the side plates 2b, 2b of the support member 2 so as to be rotatable in the direction opposite to the lift member 6. Has been. The both side plates 21b and 21b are formed by bending from both ends of the connecting side plate 21c in a horizontal direction (including a substantially orthogonal direction) perpendicular to the connecting side plate 21c.

  The mounting bases 21a and 21a fixed to the lid C are formed by bending the both side plates 21b and 21b to the outside in the horizontal direction (including the substantially orthogonal direction) perpendicular to the mounting bases 21a and 21a. Yes.

  Since the bracket member 21 is pivotally attached to the support member 2 via the second connecting member 4, the bracket member 21 and the lift member 6 are located with respect to the support member 2 as shown in FIGS. 10 and 13. Thus, the second connecting member 4 can be rotated integrally.

  Since the bracket member 21 is provided outside the both side plates 6 b and 6 b of the lift member 6, the bracket member rotates with respect to the support member 2 regardless of the rotation state of the lift member 6 with respect to the support member 2. It is free.

  As shown in FIG. 8, the bracket member 21 has a connecting side plate 21c that connects the opposite side plates 21b, 21b between the second connecting member 4 and the mounting base 21a. The mounting base 21a of the bracket member 21 is , Bent from the opposite side plates 21b, 21b to the outside. Therefore, as shown in FIG. 13, the bracket member 21 can rotate integrally with the support member 2 without interfering with the lift member 6 regardless of the angle of the lift member 6 with respect to the support member 2.

  As shown in FIG. 13A, the bracket member 21 transmits the rotation in the closing direction of the bracket member 21 around the second connecting member 4 to the lift member 6, but in the opening direction of the bracket member 21. A unidirectional engaging portion 21d that does not transmit rotation to the lift member 6 is provided. Therefore, the bracket member 21 rotates integrally with the lift member 6 when the thick document M is pressed by the lid C. Further, the bracket member 21 and the lift member 6 rotate integrally until the opening angle of the lid C reaches 60 degrees. However, since the rotation of the support member 2 relative to the mounting member 1 is restricted to 60 degrees by the first rotation restricting means E when the opening angle of the lid C is 60 degrees or more, the bracket member 21 is an engaging portion of the lift member 6. It rotates independently from 21d. For this reason, the cover body C is freely rotatable in the range of 60 degrees to 90 degrees.

  Specifically, the engaging portions 21d, 21d,... Are bracket members that engage with both side plates 6b, 6b of the lift member 6 from below as shown in FIGS. 21 is formed by bending a part of both side plates 21b and 21b inward. The reason is that when the lid C is opened, the bracket member 21 to which the lid C is attached seems to rotate independently with the second connecting member 4 as a fulcrum. Since the elastic force of the elastic member 12 acting on the member 9 is pivotally biased with the first connecting member 3 as a fulcrum in the opening direction of the lid body C, the lid body C is pivoted together with the support member 2 to open the lid body C. Rotate in the direction to assist the opening operation of the lid C.

  When the lid C is opened up to 60 degrees, the support member 2 is prevented from further rotation by the first rotation restricting means E, but the bracket member 21 has no means for preventing further opening operation of the lid C. Only the bracket member 21 rotates with the second connecting member 4 as a fulcrum, and the opening operation of the lid C attached to the bracket member 21 is permitted. However, the rotation of the bracket member 21 from 60 degrees is blocked by the second rotation restricting means F, so that the lid body is stopped at the opening angle of 90 degrees. That is, 21f and 21f abut against the protrusions (abutment portions) 6k and 6k of the lift member 6 to prevent further rotation of the bracket member 21 via the second connecting member 4. . Since the center of gravity of the lid C moves to the near side at the maximum opening angle of 90 degrees, the opened state of the lid C is stable and will not be closed naturally. It is easy to repair and inspect, and is safe. Further, it is easy to place and remove a thick original such as a book on the original placing table.

  When closing the lid that has been opened up to the maximum opening angle (90 degrees in the embodiment), the bracket member 21 supports the second connecting member 4 as a fulcrum when the front end of the lid C is touched and pulled in the closing direction. The lid C can be closed. When the lid C is closed to 60 degrees, the engaging portions 21d and 21d of the bracket member 21 are engaged with both side plates 6b and 6b of the lift member 6, and the elasticity of the elastic member 12 acting on the operating member 9 is increased. The cover member C is rotated with the support member 2 and the first connecting member 3 as a fulcrum to enable the closing operation of the cover body C, and the cover body C is closed without suddenly dropping. When the lid C is closed to around 20 degrees, the weight of the lid C is superior to the elasticity of the elastic member, and the lid C is closed by its own weight.

  Next, as shown in FIG. 13A, when the original is a thick original M such as a book, the thick original M is placed on the original placement table d (contact glass) and the cover C is placed. When the button is pushed down, the lift member 6 rotating around the second connecting member 4 with the thick original M as a fulcrum is resisted by the elasticity of the elastic member 12 acting on the operating member 9 and the bracket member 21 and the supporting member. 2 is rotated in the direction opposite to the rotation direction 2 to horizontally cover the upper surface of the thick original M, thereby preventing exposure from leaking to the outside. By releasing the pressing, the inverted cover C is pushed back to the original position by the elastic force of the elastic member 12 acting on the operating member 9. Therefore, the lid opening / closing device B can stably and evenly press the document to the upper surface of the document placing table d of the apparatus main body D regardless of the thickness of the document.

  As shown in FIG. 9, the first rotation regulating means E regulates the rotation angle of the support member 2 from the closed state of the lid C to a predetermined angle (60 degrees) that is less than the angle (90 degrees) in the opened state. . As shown in FIG. 6, the first rotation restricting means E is composed of a stopper plate 8 attached to the rear plate 1c of the attachment member 1 with attachment screws 8a, 8a. The attachment screws 8a, 8a are provided as stopper plates. 8 are fixed to the female screws 1n and 1n of the rear plate 1c through the fixing holes 8g and 8g.

  The stopper plate 8 includes a mounting board portion 8b and stopper pieces 8f and 8f which are formed by bending from both sides of the mounting board portion 8b and have a pair of convex portions 8c and 8c and protrusions 8d and 8d. ing. The rear plate 1c is provided with a pair of positioning bosses 1k, 1k that are fitted into the fixing holes 8g, 8g provided in the stopper plate 8.

  The stopper plate 8 may be provided integrally with the rear plate 1 c of the mounting member 1, and the stopper plate 8 abuts against a contact shaft or a pair of pins provided in parallel with the operation member 9 on the support member 2 and the angle of the support member 2. It may be one that regulates. In the case of the contact shaft, an elastic curved portion that elastically receives the contact shaft or a friction portion that exerts a friction force on the contact shaft may be provided on the upper portion of the stopper plate 8.

  As shown in FIG. 12, the second rotation restricting means F sets the rotation angle of the bracket member 21 from the state restricted to the predetermined angle (60 degrees) by the first rotation restricting means E to the opening state angle (90 degrees). To an angle (30 degrees) obtained by subtracting a predetermined angle (60 degrees). As shown in FIG. 12B, the second rotation restricting means F is provided on the lift member 6 and rotates the lid C from the closed state (0 degree) to the open state (90 degrees). This is a protrusion 6k that abuts against the protrusion 21f of the bracket member 21 and restricts the rotation of the bracket member 21.

  The rotation control means of the bracket member 21 according to claims 1 to 3 and 5 is not particularly indicated by an instruction symbol, but the first rotation restriction means E, the second rotation restriction means F, and the elastic member 12 described above. As described above, the first rotation restricting means E restricts the support member 2 to the rotation angle of 60 degrees, and the rotation of the bracket member 21 toward the cover body C toward 90 degrees starts from here. become. Further, the rotation angle of the bracket member 21 is restricted to 90 degrees by the second rotation restricting means F. Then, the elastic member 12 follows the opening / closing operation of the support member 2 accompanying the opening / closing operation of the lid C from 0 ° to 60 °.

  Next, operation | movement of the cover body opening / closing apparatus B of Example 1 is demonstrated.

  As shown in FIG. 3 and FIG. 9, in the closed state (0 degree) of the lid C, the lid C is closed against the elasticity of the elastic member 12 mainly by the weight of the lid C, and is stable. The closed state is maintained. In this case, the cam portion 10a of the cam slider 10 is provided with an inclination as shown by a broken line 10k so that the pressure receiving member 5 presses the cam slider 10 diagonally downward, thereby closing the lid C. It is also possible to urge the rotation in the forming direction. In the closed state (0 degree) of the lid C, the pressure receiving member 5 receives the elasticity of the elastic member 12 in the most compressed state via the cam slider 10.

  When the lid C is opened from the closed state, the support member 2, the lift member 6, and the bracket member 21 are always urged to rotate in the direction to open the lid C by the elastic member 12. Can be rotated together with the support member 2 and the lift member 6 and the lid C can be opened. This opening angle is within the range of the opening angle of 20 degrees to 60 degrees in which the rotational torque generated by the cover body C around the first connecting member 3 and the hinge torque of the cover body opening / closing device B are balanced. If you let go of your hand, it will not fall naturally. Therefore, the document can be set on the document placing table d using both hands. In addition, the self-supporting holding | maintenance angle with respect to this cover C is not limited to the thing of an Example. As shown in FIG. 9B, the elastic member 12 moves the pressure receiving member 5 outside through the cam slider 10 through the process of opening the lid C from the closed state to a predetermined angle (60 degrees). Since the original weight is reduced, the lid C is opened from the closed state to a predetermined angle (60 degrees), and the rotation is restricted by the first rotation restricting means E to the predetermined angle. It stops at (60 degrees). In the process in which the lid C is opened from the closed state to a predetermined angle (60 degrees), the pressure receiving member 5 moves away from the cam slider 10 and the compression length of the elastic member 12 is extended. The force for lifting the lid C via the cam slider 10 decreases.

  However, when the opening angle is increased, the moment of weight of the lid C centering on the first connecting member 3 is reduced, so that the force with which the elastic member 12 lifts the lid C via the cam slider 10 may be small. In consideration of these, the elastic member 12 is designed so as to maintain a predetermined angle (60 degrees) without supporting the lid C by hand. Further, when closing the opened lid C, the bracket member 21 that receives the downward rotational biasing force by the elastic force of the elastic member 12 has the engaging portions 21d, 21d... At the lower ends of the side plates 6b, 6b of the lift member 6. Since the part side is locked, only the bracket member 21 is rotated, and the lid member C is smoothly closed by rotating together with the lift member 6. Furthermore, the lid C is naturally closed when the opening angle is around 20 degrees because the rotational torque due to its own weight is superior to the hinge torque.

  As shown in FIG. 11B, through the process of opening the lid C held at a predetermined angle (60 degrees) from the predetermined angle (60 degrees) to the opened state (90 degrees), the elastic member 12 is The supporting member 2 is held at a predetermined angle (60 degrees) by continuously pressing the pressure receiving member 5 outward through the cam slider 10.

  The bracket member 21 rotates freely around the second connecting member 4 with respect to the support member 2 held at a predetermined angle (60 degrees) by the first rotation restricting means E, thereby rotating the lid C to a predetermined angle ( From 60 degrees) to the open state (90 degrees).

  As shown in FIG. 15, the conventionally known lid opening / closing device H is not provided with the bracket member 21, but is bent outward from the both side plates 16b of the lift member 16 to form the mounting plate portion 16c, and the lid is attached to the mounting plate portion 16c. This is a comparative example in which the body C is fixed. In the lid opening / closing device H of the comparative example, since the support member 2 is rotated up to 90 degrees in the opened state, the lid C protrudes toward the back side of the device main body.

  On the other hand, in the lid opening / closing device B of the first embodiment shown in FIG. 14, the support member 2 rotates only up to 60 degrees even in the opened state, so that the conventional lid opening / closing device H shown in FIG. In addition, the lid C is in an open state in a state where the lid C is shifted to the front side of the apparatus main body D. For this reason, in the lid opening / closing device B of the first embodiment, the protrusion amount of the lid C to the back side of the device main body D in the opened state is suppressed, and is secured between the device main body D and the wall portion K on the back side. The dead space DS should be smaller than that of the lid opening / closing device H of the comparative example.

  Next, when closing the lid C that has been opened to 90 degrees, the bracket member 21 is first reversed and the lid C is closed. As shown in FIG. 11 (a), when the lid C is closed to 60 degrees, the engaging portions 21d, 21d,... Of the bracket member 21 are engaged with the side plates 6b, 6b of the lift member 6. The bracket member 21 rotates together with the lift member 6 and the support member 2, and the lid C is closed.

  Since the present invention is configured as described above, the rear part does not protrude from the rear part of the apparatus main body even when the cover attached to the rear part of the apparatus main body of the various devices is fully opened, so that the installation space can be omitted. It is suitably used as various devices using the device lid opening / closing device and the child lid opening / closing device.

A MFP B, B ', B2 Lid opening / closing device C Lid D Device main body E First rotation regulating means F Second rotation regulating means 1 Mounting member 1b Both side plates 1c Rear plate 2 Support member 2b Both side plates 2i Groove end 3 First 1 connecting member 4 second connecting member 4a shaft portion 4c, 4e circumferential groove 4i flat portion 4j friction surface 4k round hole 4d D cut 5 pressure receiving member 6 lift member 6b side plate 6k protrusion 8 stopper plate 8d protrusion 9 actuating member 10 Cam slider 11 Spring receiving member 12 Elastic member 21 Bracket member 21a Mounting base 21b Both side plates 21c Connection side plate 21d Engaging portion 21f Protruding portion

Claims (10)

  An attachment member attached to the apparatus main body side, a support member rotatably attached to both side plates of the attachment member via the first connection member, and a second connection member attached to both side plates on the free end side of the support member A lift member pivotally mounted in the direction opposite to the support member, a cam slider slidably provided in the support member in contact with a pressure receiving member provided between both side plates of the mounting member, and the lift member A spring receiving member slidably provided in the supporting member in contact with an operating member provided on the free end side of the supporting member, an elastic member elastically provided between the cam slider and the spring receiving member, A bracket for attaching a document pressure-bonding plate that is pivotally attached to both side plates of the lift member and both side plates of the support member via the second connecting member so as to be rotatable in the opposite direction to the lift member. The bracket member is configured to operate together with the lift member within a predetermined rotation angle range of the lift member, but can independently rotate when the lift member exceeds a predetermined rotation angle. A lid opening / closing device comprising the rotation control means.   The bracket member rotation control means includes a first rotation restriction means provided between the support member and the mounting member, a second rotation restriction means provided between the lift member and the bracket member, and the operation. The lid opening / closing device according to claim 1, wherein the lid opening / closing device comprises the elastic member acting on the member.   The said 1st rotation control means was comprised by the stopper part provided in the rear part side of the said attachment member so that it might contact | abut with the rear part side in the predetermined | prescribed rotation angle of the said support member, It is characterized by the above-mentioned. Lid opening / closing device.   3. The lid according to claim 2, wherein the second rotation restricting means includes an engaging portion provided on both side plates of the bracket member so as to engage with both side plates of the lift member from one direction. Body opening and closing device.   The said 2nd rotation control means was comprised in the said lift member, and comprised by the protrusion part which contact | abuts with the engaging part provided in the said bracket member, and controls the rotation of the said bracket member, It is characterized by the above-mentioned. The lid opening / closing device described.   The bracket member has a connecting side plate that connects the opposing side plates on the second connecting member side, and the mounting base of the bracket member has a shape bent outward from the opposing side plates. The lid opening / closing device according to claim 1.   The bracket member rotates with the support member as a fulcrum up to a predetermined opening angle of the lid, but when the rotation of the support member is restricted by the first rotation restricting means. Rotates independently with the second connecting member as a fulcrum, allows opening operation of the original pressure plate, and engages with the lift member and rotates with the support member during the closing operation of the lid. The lid opening / closing device according to claim 1, wherein the lid opening / closing device is configured as described above.   The bracket member is provided outside the both side plates of the lift member, and the engaging portion is formed by bending a part of both side plates of the bracket member inward so as to engage with the both side plates of the lift member. The lid opening / closing device according to claim 4, wherein the lid opening / closing device is provided.   The lid opening / closing apparatus according to claim 1, wherein friction torque generating means is provided between the bracket member and the lift member.   Various devices using the lid opening / closing device according to any one of claims 1 to 9.

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