TW201939155A - Lid opening-closing device and machines - Google Patents

Abstract

A lid opening-closing device includes a mounting member, a support member, a slide member, a lift member, pressure receiving member, a slider cam member, an elastic member and a traction elastic member. The support member is attached to both side plates of the mounting member via a first connecting member. The slide member is mounted via a sliding means. The lift member is mounted on the upper portion of the slide member so as to be rotatable in the opposite direction to the support member via a second connecting member. The pressure receiving member is positioned above and attached to the first connecting member. The slider cam member and the pressure receiving member are slidably attached to and disposed between the both side plates of the mounting member. The elastic member is elastically disposed between the sliding cam member and an abutting plate. The traction elastic member pull the slide member to the mounting member side.

Description

Lid opening device and various machines

The invention relates to a cover opening and closing device which is preferably used for opening a cover of a furniture such as a manuscript pressing plate or a cabinet of a business machine such as a photocopier or a printing press, and various uses of the cover opening and closing device. machine.

Conventionally, in particular, the cover opening and closing device, which is a document opening and closing device for a document press and other office machines, is disclosed in Japanese Laid-Open Patent Publication No. 2013-97363, for example. It is known that it includes the following components: a mounting member having a mounting base mounted on the device main body side and two side plates erected from the mounting base; a supporting member having a back plate and two side plates folded from the back plate; and The two side plates are rotatably pivotally connected to the two side plates of the mounting member through the first connecting member; and an elevating member having a back plate, two side plates folded from the back plate, and a mounting base of the original pressing plate folded from the two side plates. The two side plates are pivotally connected to the free end sides of the two side plates of the supporting member through a second connecting member, so that they can rotate in different directions from the supporting member; The connecting member is a position where the center rotates and rotates; a pressure member is disposed between the two side plates of the mounting member; an elastic member is elastically disposed between the pressure member and the actuating member. So as to push the lifting member in a direction overlapping with the supporting member, while pushing the supporting member in the opening direction of the original pressing plate. In addition, a business machine using this cover opening and closing device is known. This type is now widely used, and almost all transaction machines such as photocopiers are now used.

In the conventional lid opening and closing device and the business machine using the lid opening and closing device configured as described above, as shown in FIG. 13, due to the supporting member (B) or the lifting member of the lid opening and closing device (A), (C) It is installed on the lower side of the rear end of the cover (D), so a corresponding installation wide TS needs to be reserved on the rear side of the cover (D). As a result, the problem is that the depth of the cover body (D) becomes wider and the depth of the device body (E) also increases accordingly. In recent years, miniaturization has become an important issue in various devices such as photocopiers and multifunction printers.

Therefore, an object of the present invention is to provide a cover body which can reduce the width and width of the cover body (original plate) and can miniaturize a machine such as a photocopying machine or a composite machine using the cover body opening device. Device and machine using the cover opening and closing device. In addition, since the field of the cover opening and closing device of the present invention is not limited to a business machine such as a photocopier or a compound machine, the original press plate is called a cover body, the business machine is called a machine, and the original press plate is opened and closed. The device is used as a lid opening and closing device.

In order to achieve the above object, the cover opening and closing device of the present invention has a structure including: a mounting member, which is mounted on the upper end side of the rear of the device main body; and a support member, which is rotatably mounted thereto through a first connection member. Both sides of the mounting member; a sliding member located outside the supporting member and slidably mounted on the supporting member through the sliding device in the up-down direction; a lifting member installed on the rear end side of the cover body, The second connecting member is rotatably mounted on the upper portion of the sliding member in a direction opposite to the supporting member; a pressure member is located above the first connecting member and is mounted on the upper portions of the two side plates of the mounting member; A slider cam member, which is in contact with the pressure member and is slidably received between the two side plates of the support member; an elastic member is elastically disposed between the sliding cam member and the abutting plate, and the abutting plate It is provided on the free end side of the support member; and a traction elastic member is provided between the support member and the sliding member in a tensioned state, and always The slide member is pulled to the mounting member side.

According to the present invention, the sliding member is configured to resist the traction elasticity together with the lifting member when a heavy original such as a book is placed on the original placing table on the side of the apparatus body and the cover is closed. The pulling force of the member slides upward, and the lifting member rotates through the second connecting member in a direction different from the rotation direction of the supporting member, so that the cover can cover the upper surface of the heavy original in a horizontal state.

According to the present invention, the structure of the sliding device includes: a rail portion that is installed in the up-down direction along the two side plates of the support member; and a roller that engages with the rail portion on both side plates of the sliding member and is The rail part guides to assist the sliding of the sliding member in the vertical direction.

According to the present invention, the traction elastic member is provided between the first connection member and the second connection member in a tensioned state.

According to the present invention, there are various machines using the lid opening and closing device of each of the above inventions.

According to the present invention, since it is possible to omit the wide width in the depth direction of attaching the supporting member or the elevating member to the lower end portion side of the rear portion of the cover, it is possible to provide a depth of various machines such as a photocopier or a compound machine. Wide cover opening and closing device that can contribute to miniaturization of the machine and a machine using the cover opening and closing device.

In the present invention, even if the lifting member is vertically mounted to the rear end portion side of the cover, the lifting member can be inverted to cover the upper surface of the heavy original in a horizontal state, so that not only the thick original can be tightly placed on the original Placed on a table can also prevent exposure from leaking to the outside.

In the present invention, since the slide device can be constituted by a simple mechanism using a rail portion and a roller, it is easy to reduce the number of parts and manufacturing cost.

In the present invention, since the traction elastic member is provided between the first connection member and the second connection member in a tensioned state, there is no need to provide a dedicated structure for connecting the traction elastic member to the mounting member or the sliding member. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, although an example of a cover opening device for a document pressing or opening device for a photocopier or a composite machine is described, this cover opening device can be used as an opening device as described above. Cover opening / closing device for covers of printers, fax machines, scanners, and other office machines, such as photocopiers or multifunction printers, or various machines such as cabinets. Therefore, the object of the present invention is not limited to the cover opening and closing device used in a photocopying machine or a multifunction machine. In the following embodiments, a manuscript pressing plate is used as a cover, a manuscript pressing device is used as a cover opening device, and a machine using the cover opening and closing device is set as a machine. In this description and the description of the scope of patent application, although these terms are mixed together, the two terms have the same meaning.

In addition, the terms of the mounting member 1, the supporting member 2, the lifting member 6, the pressure receiving member 5, the elastic member 12, and the like described in the scope of this specification and the patent application are not limited to the specific mounting member 1 used as this embodiment. , The support member 2, the lifting member 6, the pressure receiving member 5, and the elastic member 12 are broader concepts than the specific content described below.

Example 1

As shown in FIG. 1, a pair of cover opening and closing devices (only one of which is shown) is installed on the device main body D of the machine A (multifunctional machine) of the present invention, which are arranged at a distance from the original placement table d. In a vertical direction, a cover body C equipped with an automatic document feeding device c is openably mounted on the pair of cover body opening devices. In such a pair of cover opening and closing devices, the cover opening and closing device B shown in the figure is used for the side of the heavy mechanism portion of the automatic document feeding device c, and the load applied during the opening and closing operation is large. Therefore, the elastic member 12 adopts a double coil spring method in which two coil springs are arranged side by side. On the other hand, since the load of the cover opening and closing device on one side is not shown in the figure, the load is relatively small. Although not shown, the cover opening and closing device on this side is small. A single coil spring method consisting of one coil spring or a torsion spring is used. However, since the cover opening and closing device (not shown) basically has the same structure as the cover opening and closing device B shown in the figure, in the following description, only the cover opening and closing device B will be described. Also, in large multifunctional machines and other office machines, the weight of the cover C will increase. Therefore, no matter whether the coil spring is two coil springs or one coil spring, in some cases, coil springs of different diameters will be concentric circles. Overlapping.

As shown in FIG. 2, the lid opening and closing device B attaches the mounting base 6 c of the lifting member 6 to the rear end portion of the lid C. Herein, the term "rear end portion" is not limited to the rear side surface, but also includes a position where the rear end portion enters from the rear side. When the cover C is closed, the cover C is parallel to the original placement table d of the apparatus main body D and closely contacts the original placement table d to prevent light leakage.

As shown in FIGS. 2 to 11, the structure of the cover opening and closing device B of the present invention includes: a mounting member 1 that is mounted on the upper end side of the rear portion of the device main body D; a support member 2 that passes through the first connecting member 3 Rotatably mounted on both side plates 1b, 1b of the mounting member 1; a sliding member 7 is located outside the support member 2 and is slidably mounted on the support member 2 in a vertical direction through the sliding device 9; A lifting member 6 is installed on the rear end side of the cover C, and is rotatably mounted on the upper portion of the sliding member 7 through the second connecting member 4 in a direction opposite to the supporting member 2; a pressure receiving member 5 is located at Above the first connecting member 3, and mounted on the upper sides of the side plates 1b, 1b of the mounting member 1; a slider cam member 10, which is in contact with the pressure receiving member 5 and is slidably received on both sides of the supporting member 2 Between the side plates 2b, 2b; an elastic member 12 elastically disposed between the sliding cam member 10 and the abutment plate 2d, the abutment plate 2d is disposed on the free end side of the support member 2; and an elastic member 13 for traction, Provided in a tight state on the first connecting member 3 and the second connecting member Between the member 4 and the slide member 7 always is always pulled to the side of a mounting member. Furthermore, with this structure, even when the cover opening and closing device B is used, the depth of the cover C can be reduced, and the machine A using the cover opening and closing device B can be miniaturized.

Among them, the structure of the mounting member 1 includes: a mounting base 1a, which is mounted on the main body D of the device; and two side plates 1b, 1b, from which both ends of the mounting base 1a are respectively directed toward the mounting base 1a. Bend in a direction above the intersection (also including a slightly orthogonal direction); and a back plate 1c of a substantially rectangular shape, from one end (rear end) of the mounting base 1a to an upward direction orthogonal to the mounting base 1a (Also including a slightly orthogonal direction) is bent so that the engaging pieces 1j and 1j provided on both side portions thereof are engaged with the engaging grooves 1i and 1i provided on both side plates 1b and 1b of the mounting member 1.

The first connection member mounting holes 1d and 1d of the mounting member 1 are through holes through which the first connection member 3 is rotatably mounted. In the embodiment, the first connecting member 3 is a metal round rod in which peripheral grooves 3e and 3e are provided at both ends and D-shaped cutting surfaces 3d and 3g are provided at one end. The first connection member 3 penetrates the bearing holes 3h and 3h of the bearing members 3a and 3a mounted on the first connection member mounting holes 1d and 1d of the mounting member 1, and connects the first connection member insertion hole 2e of the support member 2. And 2e, by inserting the E-ring 3c through the gaskets 3b and 3b into the surrounding grooves 3e and 3e provided at one end of the first connecting member insertion hole 2e to prevent the first connecting member 3 from the supporting member 2 falls off.

The first connecting member 3 may not be provided as a single shaft, but may be divided into two sections so that the two side plates 1b and 1b of the mounting member 1 and the two side plates 2b and 2b of the supporting member 2 are separated and connected by a common axis. In addition, the case where the two side plates 1b, 1b, 2b, and 2b are each connected by an eyelet is also included.

Above the both side plates 1 b and 1 b of the mounting member 1, pressure receiving member mounting holes 1 e and 1 e located above the first connection member 3 are provided. In the embodiment, these pressure member mounting holes 1e, 1e are through holes of the pressure member 5 that is non-rotatably mounted as the shaft body. After the pressure-receiving pins 5a constituting the pressure-receiving member 5 are inserted into the pressure-receiving member mounting holes 1e, 1e, both ends thereof are riveted and fixed to the pressure-receiving member mounting holes 1e, 1e of the mounting member 1 in a non-rotatable manner. In addition, the pressure receiving pin 5a can be prevented from falling off by using an E-ring, or can be rotatably mounted to the pressure receiving member mounting holes 1e, 1e, or it can be coated with resin.

The pressure-receiving member 5 may be integrally or integrally formed by the pressure-receiving pin 5a and the rotating roller, and may be rotatably mounted to the pressure-receiving member mounting holes 1e, 1e. The pressure-receiving member 5 may also be composed of a metal pressure pin 5a pivotally mounted between the two side plates 1b and 1b of the mounting member 1; and a synthetic resin-based rotating roller passing through the receiving An insertion hole in the axial direction of the pressing pin 5a is rotatably mounted to the receiving pin 5a. The pressure-receiving member 5 may have a vertical cross-sectional shape other than a circle to make it non-rotatable, and control the expansion and contraction of the elastic member 12 in accordance with the rotation of the support member 2 in a predetermined pattern. The material of the rotating roller is not limited to synthetic resin, but may be sintered metal, ceramics, machined products, or others. In addition, the pressure-receiving member 5 may be a shaft made of synthetic resin and covered with a metal shaft, and may include a fixing member protruding from the cylindrical body toward the first connecting member 3.

The cylindrical side surface of the pressure receiving member 5 is in contact with the cam portion 10 a of the slider cam member 10. Apply a layer of grease (not shown) to the contact surfaces of the cam portion 10a and the pressure-receiving member 5. In addition, the cam portion 10a may be formed into a curved R-shape, and the rotating roller supported by the pressure receiving pin 5a may be configured such that the sliding contact portion side that abuts against the cam portion 10a is an R-shaped surface with the cam portion 10a. Contact shape. The mounting holes 1g and 1h provided in the mounting base 1a are through holes for mounting the mounting screw 1m or the mounting button 1n when the mounting base 1a is mounted on the apparatus main body D.

As shown in FIG. 3, the support member 2 houses the slider cam member 10, the elastic members 12, 12 and the damper 14. As shown in FIG. 4, the supporting member 2 includes: a back plate 2 a; two side plates 2 b and 2 b, from which both ends of the back plate 2 a are bent downward; and a holding plate 2 c and 2 c from which the two side plates 2 b and 2 b are bent. The lower end side is bent inward together; and an abutment plate 2d is provided to be bent from the back plate 2a to the free end side of the support member 2 so as to connect the two side plates 2b, 2b. The abutting plate 2d is welded while being superposed on the connecting portions 2f and 2f bent from the side plates 2b and 2b. In this way, the support member 2 is reinforced so that the abutment plate 2d receives a large force received from the elastic member 12 without bending the box structure. The abutment plate 2d may be a simple metal round rod.

As described above, the two side plates 2 b and 2 b are rotatably connected to the two side plates 1 b and 1 b of the mounting member 1 by the first connection member 3. The first connection member insertion holes 2e, 2e of the support member 2 are through holes for inserting the first connection member 3. The stopper holes 2g and 2g of the support member 2 are inserted with a stopper pin (not shown) when the support member 2 is assembled, so that the elastic member 12 can maintain a compressed state between the slider cam member 10 and the abutment plate 2d. hole.

As shown in FIG. 4, in the support member 2, the slider cam member 10 is held in a C-shaped section in a plane section surrounded by the back plate 2 a, the two side plates 2 b, 2 b, and the holding plates 2 c, 2 c, and is slidable. The manner is accommodated in the telescopic direction of the elastic member 12. The sliding cam member 10 is pushed by the elastic member 12 and abuts against the pressured member 5 and expands and contracts according to the rotation position of the support member 2 relative to the mounting member 1 to generate an assisting force in the direction of opening the cover C. In addition, When the lid C is closed, a cushioning effect is produced.

The pressure-receiving member 5 is attached to the upper portions of the side plates 1 b and 1 b of the mounting member 1 so as to be positioned above the first connecting member 3. Therefore, as shown in FIG. 6, when the cover C is closed, the support member 2 is installed in an upright state relative to the mounting member 1, and the compression amount of the elastic member 12 is maximized when the cover C is closed. The maximum auxiliary force is output. As shown in FIG. 8, in the horizontally opened state of the support member 2, the compression amount of the elastic member 12 is minimized and the minimum auxiliary force is output.

As shown in FIG. 4, the slider cam member 10 is formed as a cylindrical member having a substantially rectangular cross section and having a bottom, and is accommodated in the support member 2 so that the opening portions 10 b and 10 b and the abutment plate 2 d of the support member 2 face each other. . As shown in FIG. 6, the cam portion 10 a of the slider cam member 10 is in contact with the pressure receiving member 5. A cam portion 10a is provided at an end portion of the sliding cam member 10 on the pressure-receiving member 5 side, which is inclined in one direction and the upper surface is flat. At the same time, a cover portion 10c is provided to cover the pressure-receiving member 5 with lubrication. Exposed side of the oil.

Between the slider cam member 10 and the abutment plate 2d of the support member 2, an elastic member 12 is held under pressure, and is composed of a pair of coil springs 12a, 12a. The pair of coil springs 12a and 12a push the abutment plate 2d of the slide cam member 10 and the support member 2 in directions away from each other. The abutting plate 2 d abuts the coil springs 12 a and 12 a of the elastic member 12 and the damper 14. The convex portion 14e at the upper end of the damper 14 is held in the through hole 14d of the contact plate 2d, and the upper surface of the flange portion 14b is brought into close contact with the lower surface of the contact plate 2d.

The lower ends 12 c and 12 c of the coil springs 12 a and 12 a are in contact with the bottom surface 10 d of the opening portion 10 b of the slider cam member 10. Although the upper end 12b of the coil spring 12a on the side without the damper 14 is in contact with the abutment plate 2d of the support member 2, as shown in FIG. 6, the upper end 12b of the coil spring 12a on the side with the damper 14 is It is in contact with the flange portion 14 b of the damper 14 held by the contact plate 2 d of the support member 2. Thereby, the coil spring 12 a presses the flange portion 14 b of the damper 14 against the abutting plate 2 d of the support member 2 and supports the damper 14 in the mounting member 1. In addition, the number of coil springs constituting the elastic member 12 may be one or two or more, and the arrangement may be in parallel or in series. For example, two concentric circles can be arranged in parallel or two in series or only one.

In the opening portion 10 b of the slider cam member 10 on the side having the damper 14, a cylindrical portion 10 e is formed to support the piston rod 14 c of the damper 14.

The slider cam member 10 is pressed by the pressure receiving member 5 attached to the mounting member 1 to pressurize and compress the elastic member 12. When the support member 2 is rotated toward the cover C relative to the opening direction of the mounting member 1 with the first connection member 3 as the center, the sliding cam member 10 moves in the direction of the mounting member 1 and reduces the compression of the elastic member 12. Therefore, the elastic member 12 applies an assisting force to the lifting member 6 via the support member 2 and the sliding member 7 to reduce the force required to open the cover C.

From the closed-closing angle of the cover C to 30 degrees to the closed-closing position shown in FIG. 6, the piston rod 14 c of the damper 14 is in contact with the cylindrical portion 10 e. Therefore, during the closing process of the cover C from 30 degrees to 0 degrees, the piston rod 14c is gradually pushed into the cylinder 14a of the damper 14, and the damper 14 outputs an auxiliary force with viscous resistance to the support member 2. In other words, sudden rotation is prevented and a collision between the device main body D and the cover body C is prevented.

The slider cam member 10 is in contact with the first connecting member 3 from an opening angle of 60 degrees of the cover shown in FIG. 7 (a) to an open position of 90 degrees shown in FIG. 8, and the pressure receiving member 5 and the slider cam member The cam portion 10a of 10 is separated. Therefore, in the range of 60 degrees to 90 degrees of the cover C, the length of the elastic member 12 is a certain length, and the thrust of the elastic member 12 does not output an assisting force to the support member 2. However, since the position of the center of gravity of the cover C is approximately at a certain height within the range of 60 degrees to 90 degrees of the cover C, the user can rotate the cover C without being hindered by the weight of the cover C.

As shown in FIGS. 3 and 5, the slide member 7 is located outside the support member 2 and is slidably mounted to the support member 2 through the slide device 9 in the vertical direction. Here, the up-and-down direction is described with reference to the closed state of the cover C, in other words, the diameter direction of rotation along the direction of the back plate 2a or the first connection member 3 as a center. The structure of the sliding devices 9, 9 includes: a slide rail portion 9d, 9d, which is installed in the up-down direction along the two side plates 2b, 2b of the support member 2; and a roller 9a, which slides on the two side plates 7b, 7b of the slide member 7 and slides The rail portions 9 d and 9 d are engaged with each other and guided by the slide rail portions 9 d and 9 d to assist the sliding movement of the sliding member 7 in the vertical direction.

The structure of the sliding member 7 includes: a connecting plate 7a; and two side plates 7b and 7b, which are bent downward from both ends of the connecting plate 7a in the vertical direction. Roller pin mounting holes 9c, 9c are formed in the side plates 7b, 7b. The front ends of the metal roller pins 9b and 9b passing through the hard resin rollers 9a and 9a are inserted into the roller pin mounting holes 9c and 9c, respectively, and the rollers 9a and 9a are riveted from the opposite sides from the insertion direction. It is rotatably attached to the sliding member 7.

Female screws 9 g and 9 g are formed on both side plates 2 b and 2 b of the support member 2. The slide rail portion mounting screws 9f and 9f passing through the through holes 9e and 9e of the slide rail portions 9d and 9d made of metal are screwed to the internal threads 9g and 9g to fix the slide rail portions 9d and 9d to the support member 2.

The support member 2 to which the slide rail portions 9d and 9d are attached is inserted into the slide member 7 to which the rollers 9a and 9a are attached in a direction of an arrow R9, and the lower end 13c of the traction elastic member 13 and the first The peripheral grooves 3e and 3e of one connecting member 3 are engaged with each other to assemble the sliding devices 9 and 9. The traction elastic member 13 engages the upper end 13b of the coil spring 13a with the peripheral grooves 4e and 4e of the second connection member 4, and engages the lower end 13c with the peripheral grooves 3e and 3e of the first connection member 3 to pull. The tight state is provided between the first connection member 3 and the second connection member 4, and the sliding member 7 is always pulled to the mounting member 1 side.

On the free end sides of the side plates 7b and 7b of the sliding member 7, the elevating member 6 is rotatable in a direction opposite to the supporting member 2 via the second connecting member 4 axis. The second connection member insertion holes 7 d and 7 d of the slide member 7 are inserted through holes of the second connection member 4. The second connecting member 4 is a metal round rod formed with peripheral grooves 4c and 4c and peripheral grooves 4e and 4e at both ends, and the shaft portion 4a is inserted into the second connecting member insertion hole 7d of the sliding member 7, 7d and the second connection member connection holes 6d and 6d of the elevating member 6 connect the elevating member 6 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. The disc-shaped protrusions 7e and 7e provided at the slightly center of the two side plates 7b and 7b of the sliding member 7 are used to ensure that the two side plates 7b and 7b of the sliding member 7 and the side plates 6b and 6b of the lifting member 6 are uniformly left and right. Spacer between a predetermined space.

The lifting member 6 includes: a back plate 6a; two side plates 6b, 6b, from which both ends of the back plate 6a are respectively bent downward (or including a slightly orthogonal direction) orthogonal to the back plate 6a; and A mounting base 6c is respectively bent outward from the side plates 6b and 6b, and the cover C is mounted on the mounting base 6c. The mounting bases 6c and 6c fixed on the cover C are bent from the two side plates 6b and 6b to the outside of the horizontal direction (including the slightly orthogonal direction) orthogonal to the mounting bases 6c and 6c, respectively. to make.

As shown in FIG. 3, the lifting member 6 is arranged so as to cover the support member 2 and the sliding member 7 from the outside. The E-rings 4 b and 4 b are fitted into the peripheral grooves 4 c and 4 c protruding from both ends of the second connecting member connecting holes 6 d and 6 d of the lifting member 6 to prevent the second connecting member 4 from being separated from the lifting member 6.

As with the first connecting member 3, the second connecting member 4 can be divided into two sections, and the two side plates 7b, 7b, 6b, and 6b of the sliding member 7 and the lifting member 6 are separated and connected to each other by a common axis. Eyelets can also be used in some cases. In addition, friction between a side plate 7b, 7b of the sliding member 7 and a side plate 6b, 6b of the lifting member 6 in a portion connected by the second connecting member 4 may be provided by a friction washer or spring washer having a conventional structure. Mechanism as a friction torque generating device. According to the above-mentioned structure, it is possible to more surely prevent rotation of only the elevating member 6 when the cover C is opened and closed, and stable opening and closing operation can be expected.

The traction elastic member 13 is provided between the first connection member 3 and the second connection member 4 in a tensioned state. The traction elastic member 13 has a ring-shaped engaging portion at the upper end 13 b and the lower end 13 c of the coil spring 13 a made of a tension coil spring. If the traction elastic member 13 can always pull the sliding member 7 to the mounting member 1 side, the traction elastic member 13 may be provided at a position other than between the first connection member 3 and the second connection member 4. However, since the lower end 13c is engaged with the first connection member 3, it is possible to reduce the influence on the assisting force of the elastic member 12 as the support member 2 rotates. In addition, since the upper end 13b and the second connection member 4 are engaged, the free rotation of the lifting member 6 with respect to the sliding member 7 can be prevented from being affected.

The traction force adjusting device 8 of the traction elastic member 13 is composed of an adjustment screw 8 a and is attached to a screw hole 8 b of the connection plate 7 a of the sliding member 7. By turning the adjusting screw 8a, the position of the sliding member 7 in the vertical direction can be changed, and the tension of the traction elastic member 13 can be adjusted.

If the cover opening and closing device B of the first embodiment is used, as shown in FIG. 1, FIG. 2 and FIG. 6 in particular, the lifting member 6 with the cover C is located in a slightly vertical direction when the cover C is closed. It is possible to omit the wide width in the depth direction for mounting the support member 1 or the lifting member 6 to the lower end side of the rear portion of the cover C. Therefore, the width in the depth direction of the cover C can be shortened, and the size of the device A can be reduced. In addition, by shortening the width in the depth direction of the cover C, the weight moment of the cover C is reduced, the auxiliary load of the cover opening device B is reduced, and the cover opening device B itself can be realized. miniaturization.

FIG. 11 is a diagram for explaining the function of the lifting mechanism 15 when the manuscript is a heavy manuscript M such as a book in the cover opening and closing device B shown in FIG. 3. The structure of the lifting mechanism 15 includes: a sliding member 7; sliding devices 9, 9; elastic members 13 and 13 for traction, and fixing screws 6g and 6g as shown in FIG. Among them, the fixing screws 6g and 6g pass through the through holes 6f and 6f provided on the side plates 6b and 6b of the lifting member 6, and are internally threaded 6i provided on the side plates 7b and 7b of the sliding member 7. 6i enable the sliding member 7 and the lifting member 6 centered on the second connecting member 4 to rotate integrally. Therefore, as shown in FIG. 11 (b), the elevating member 6 can rotate freely together with the sliding member 7 with the second connecting member 4 as the center.

Therefore, as shown in FIG. 11 (a), when a heavy original M such as a book is placed on the original placement table d of the apparatus main body D and the cover C is closed, the lifting member 6 and the sliding member 7 resist the elasticity for traction together. The pulling force of the member 13 slides upward, and at the same time, the supporting member 2 rotates and rises counterclockwise with the first connecting member 3 as a fulcrum. As shown in FIG. 11 (b), the cover C can be covered in a horizontal state. The top of the heavy original M.

Example 2

12 (a) and 12 (b) show other embodiments of the lifting mechanism 15 of the first embodiment. According to the drawings, in addition to omitting the fixing screws 6g and 6g, the lifting mechanism 16 of this second embodiment has the same embodiment as the first embodiment. The lifting mechanism 15 of 1 has the same structure, so the same symbols and component names are used for the indication symbols and components. The structure of this lifting mechanism 16 includes: a lifting member 6; a sliding member 7; sliding devices 9 and 9; and traction elastic members 13 and 13. In this way, the rotation of the elevating member 6 centered on the second connecting member 4 with respect to the sliding member 7 is cancelled, and the elevating member 6 is individually rotated relative to the sliding member 7 with the second connecting member 4 as the center.

As shown in FIG. 12 (a), during the closing process of the cover C, the cover C is in contact with the corner portion of the heavy original M. Therefore, if the cover C is further pressed down, the sliding member 7 resists by the sliding devices 9, 9 The pulling force of the traction elastic members 13 and 13 rises, and at the same time, the lifting member 6 rotates counterclockwise with the second connection member 4 as a fulcrum, so that the cover C horizontally covers the upper surface of the heavy original M.

Next, the operation of the lid opening and closing device B of the present invention will be described. As shown in FIG. 6, when the closed state of the cover C is 0 degrees, the cover C is pressed against the original placement table d by the weight moment of the cover C against the assist torque of the elastic member 12. Keep stable closed. Moreover, as described above, when the closed state of the cover C is 0 degrees, the pressure receiving member 5 receives the thrust of the elastic member 12 in the most compressed state through the sliding cam member 10. Here, by forming a predetermined inclination on the cam portion 10 a of the slider cam member 10, the support member 2 can output the pressure in the direction of the cover C from the pressure receiving member 5 through the sliding cam member 10. thrust.

The opening angle of the cover C is a range of opening angles of 30 to 60 degrees in which the rotational torque generated by the cover C around the first connecting member 3 and the assist torque of the cover opening and closing device B are balanced, even if Even if the hand is released from the cover C, it will not fall naturally. Therefore, the original can be placed on the original placement table d with both hands. In addition, the self-supporting holding angle with respect to this cover C is not limited to an Example. In addition, in order to maintain the posture of the cover C during the opening process, the assist torque (thrust of the elastic member 12) of the cover opening and closing device B may be set to be within a range of 30 to 60 degrees of the opening angle. The cover body C can also be rotated by pushing it upwards by hand.

Next, since the cover body C is opened from the closed state to a predetermined angle (60 degrees), the elastic member 12 continues to press the pressure-receiving member 5 through the sliding cam member 10, so the cover body C is reducing itself. In the state of weight, after opening from a closed state to a predetermined angle (60 degrees) with a light operating force, as shown in FIG. 7 (a), the slider cam member 10 and the first connecting member 3 are stopped. At a predetermined angle (60 degrees). During the process of opening the cover C from the closed state to a predetermined angle (60 degrees), since the pressure receiving member 5 moves away from the slider cam member 10 and the compression length of the elastic member 12 is elongated, the elastic member 12 penetrates The sliding cam member 10 reduces the force with which the cover C is opened.

As described above, when the opening angle is 60 degrees or more, the weight moment of the cover body C centering on the first connection member 3 becomes small, so the elastic member 12 can also open the cover body by sliding the cam member 10 C's power becomes smaller. In consideration of these problems, the elastic member 12 is designed to maintain a predetermined angle (60 degrees) without supporting the cover C by hand.

On the other hand, in the process of closing the cover C which is 90 degrees in the open state to 0 degrees in the closed state, where the opening angle is in the range of 90 to 60 degrees, as described above, the cover opening and closing device B does not The non-rotating first coupling member 3 is used as a frictional resistance element of the slider cam member 10 to output an assist force.

Next, in a range of an opening angle of 60 degrees to 30 degrees, the lid body C is rotated around the first connecting member 3 by the pressing of the lid body C to be lowered and closed. Then, in the range of the opening angle of 30 degrees to 0 degrees, since the weight moment of the cover body C centering on the first connection member 3 exceeds the assist torque of the elastic member 12, the cover body C decreases due to its own weight. Closed. However, since the piston rod 14c of the damper 14 comes into contact with the cylindrical portion 10e of the sliding cam member 10 from a predetermined closing angle, the cover C does not close suddenly due to its viscous resistance.

The slide device 9 may be any mechanism that can attach the slide member 7 to the support member 2 (the diameter direction of the rotation of the support member 2) so as to be able to slide in the vertical direction. Therefore, it can be replaced with a mechanism other than the combination of the roller 9a and the slide rail part 9d, for example, a combination of a sliding shaft and a sliding bearing, a combination of a plurality of pairs of rollers that clamp the slide rail and the slide rail, and the like. In order to stabilize the posture of the cover C when the cover C is opened, an elastic member may be added to push the free end of the lifting member 6 centered on the second connecting member 4 to the sliding member 7 side. .

Since the structure of the present invention is as described above, it is possible to reduce the depth of the cover body and miniaturize the cover body. In addition, the present invention is preferably used for a cover that can miniaturize the apparatus main body of various machines having the cover body Body opening and closing device and machine using the cover opening and closing device.

A‧‧‧ Machine

B‧‧‧ Lid opening and closing device

C‧‧‧ Cover

c‧‧‧Automatic original feeding device

D‧‧‧device body

d‧‧‧Original Placement Table

M‧‧‧ Thick Original

R9‧‧‧ arrow

TS‧‧‧ Wide installation

1‧‧‧Mounting member

1a‧‧‧Mounting base

1b‧‧‧ both sides

1c‧‧‧Back

1d‧‧‧The first connection member mounting hole

1e‧‧‧Pressure member mounting hole

1g‧‧‧Mounting hole

1h‧‧‧Mounting hole

1i‧‧‧Kahegou

1j‧‧‧ Engagement

1m‧‧‧Mounting screw

1n‧‧‧install button

2‧‧‧ support member

2a‧‧‧Back

2b‧‧‧ both sides

2c‧‧‧Retaining plate

2d‧‧‧ abutment board

2e‧‧‧The first connection member jack

2f‧‧‧Connection Department

2g‧‧‧stop hole

3‧‧‧ the first connecting member

3a‧‧‧bearing member

3b‧‧‧Gasket

3c‧‧‧E ring

3d‧‧‧D-shaped cutting surface

3e‧‧‧around slot

3g‧‧‧D-shaped cutting surface

3h‧‧‧bearing hole

4‧‧‧ 2nd connecting member

4a‧‧‧Shaft

4b‧‧‧E ring

4c‧‧‧Slots around

4e‧‧‧around slot

5‧‧‧Compression member

5a‧‧‧Pressed Pin

6‧‧‧ Lifting member

6a‧‧‧Back

6b‧‧‧ both sides

6c‧‧‧Mounting base

6d‧‧‧ 2nd connection member connection hole

6f‧‧‧through hole

6g‧‧‧set screw

6i‧‧‧internal thread

7‧‧‧ sliding member

7a‧‧‧Link board

7b‧‧‧ both sides

7d‧‧‧ 2nd connecting member socket

7e‧‧‧ convex

8‧‧‧ Traction adjustment device

8a‧‧‧Adjustment screw

8b‧‧‧Screw hole

9‧‧‧ sliding device

9a‧‧‧roller

9b‧‧‧roller pin

9c‧‧‧Roller pin mounting hole

9d‧‧‧Slide

9e‧‧‧through hole

9f‧‧‧Slide rail mounting screws

9g‧‧‧internal thread

10‧‧‧ slider cam member

10a‧‧‧Cam

10b‧‧‧ opening

10c‧‧‧ Lid

10d‧‧‧ Underside

10e‧‧‧Cylinder

12‧‧‧ Elastic member

12a‧‧‧ Coil Spring

12b‧‧‧Top

12c‧‧‧ lower end

13‧‧‧ Traction elastic member

13a‧‧‧ Coil Spring

13b‧‧‧Top

13c‧‧‧ bottom

14‧‧‧ Damper

14a‧‧‧cylinder

14b‧‧‧ flange

14c‧‧‧Piston rod

14d‧‧‧through hole

14e‧‧‧ convex

15‧‧‧Lifting mechanism

16‧‧‧Lifting mechanism

A‧‧‧ Lid opening device

B‧‧‧ support member

C‧‧‧Lifting member

Ding‧‧‧Cover

E‧‧‧The main body of the device

FIG. 1 is a side view of a multifunction machine showing an example of a machine using a cover opening and closing device of the present invention, in a state where the cover is opened.

Fig. 2 is a side view showing the lid opening and closing device shown in Fig. 1 in an enlarged state, showing a state in which the lid is closed.

Fig. 3 is a perspective view showing a single lid opening and closing device shown in Fig. 2 in a state where the lid is closed (not shown).

FIG. 4 is an exploded perspective view showing the lid opening and closing device shown in FIG. 3.

FIG. 5 is an explanatory view showing a structure of a sliding device of the cover opening and closing device shown in FIG. 3.

Fig. 6 is a longitudinal sectional view showing a closed state of the lid opening and closing device shown in Fig. 2 viewed from the opposite side.

Fig. 7 is a longitudinal sectional view showing a state where the lid opening device shown in Fig. 6 is used and the lid is opened to an intermediate opening angle, where (a) is a state showing 60 degrees, and (b) is a state showing 80 degrees status.

FIG. 8 is a longitudinal sectional view showing a state in which the cover is opened by 90 degrees using the cover opening and closing device shown in FIG. 6.

Fig. 9 is a longitudinal sectional view showing another position of the lid opening / closing device shown in Fig. 6 and a state in which the lid is closed, illustrating the operation of the slide device.

FIG. 10 is a longitudinal sectional view showing a state where the cover is opened to 90 degrees using the cover opening and closing device shown in FIG. 6.

11 is a side view illustrating the operation of the lifting mechanism when the original is a thick original such as a book in the cover opening and closing device shown in FIG. 6, where (a) is a state before the operation; ) Indicates the state at the end of the operation.

Fig. 12 is a side view showing another embodiment of the lifting mechanism, in which (a) shows a state before the operation and (b) shows a state at the end of the operation.

FIG. 13 is an explanatory view showing a state in which a lid body of a conventional lid opening and closing device is attached.

Claims (5)

A cover opening and closing device whose structure includes: A mounting member, which is mounted on the upper end side of the rear of the device body of a machine; A support member is rotatably mounted to both side plates of the mounting member through the first connecting member; A sliding member, which is located on the outer side of the supporting member and is slidably mounted on the supporting member in a vertical direction through the sliding device; A lifting member is installed on the rear end portion side of the cover body, and is rotatably mounted on the upper portion of the sliding member through the second connecting member in a direction opposite to the supporting member; A pressure member is located above the first connecting member and is mounted on the upper portions of the two side plates of the mounting member; A slider cam member that is in contact with the pressure-receiving member and is slidably accommodated between two side plates of the support member; An elastic member elastically provided between the sliding cam member and an abutting plate, the abutting plate being provided on a free end side of the supporting member; and An elastic member for traction is provided between the support member and the sliding member in a tensioned state, and the sliding member is always pulled to the mounting member side, The rear end of the cover is mounted to the lifting member. The cover opening and closing device according to item 1 of the scope of patent application, wherein the sliding member is configured to place a heavy original such as a book on the original placing table on the main body side of the device and close the cover, The sliding member slides upward with the lifting member against the pulling force of the traction elastic member, and the lifting member rotates through the second connecting member in a direction different from the rotation direction of the supporting member, so that the cover can be horizontal The status covers the top of the heavy original. The cover opening and closing device according to item 1 of the scope of patent application, wherein the structure of the sliding device includes: A rail portion mounted in the up-down direction along the two side plates of the support member; and A roller is engaged with the rail portion on both side plates of the sliding member and is guided by the rail portion to assist the sliding of the sliding member in the vertical direction. The cover opening and closing device according to item 1 of the scope of patent application, wherein the elastic member for traction is disposed between the first connection member and the second connection member in a tensioned state. A machine using the cover opening and closing device described in any one of claims 1 to 4 and applying the cover to the main body of the device.