TWI698699B - 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

Cover opening and closing device and office machine

The present invention relates to a cover opening and closing device that is preferably used for opening and closing the cover of the manuscript plywood of office machines such as photocopiers or printing presses or furniture such as cabinets and the business using the cover opening and closing device machine.

Traditionally, especially as a cover opening and closing device for manuscript press plate opening and closing devices used in office machines such as photocopiers, for example, the cover opening and closing device described in Japanese Patent Laid-Open No. 2013-97363 is Conventionally, it includes the following components: a mounting member with a mounting base installed on the main body side of the device and two side panels erected from the mounting base; a supporting member with a back panel and two side panels folded from the back panel, and The two side plates are pivotally connected to the two side plates of the mounting member through the first connecting member; and a lifting 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 side plates of the supporting member through the second connecting member, so that they can rotate in a different direction from the supporting member; the actuating member is provided with the second lifting member The connecting member is the position where the center rotates and revolves; a pressure member is arranged between the two side plates of the mounting member; an elastic member is elastically arranged between the pressure member and the actuating member so as to be in contact with the supporting member The lifting member is pushed in the overlapping direction, and at the same time the supporting member is pushed in the opening direction of the original pressing plate. In addition, the business machine using this cover opening and closing device is conventionally known. Now this type is widely used, and almost all business machines such as photocopiers are now used.

In the conventional cover opening and closing device constructed as described above and the business machine using the cover opening and closing device, as shown in FIG. 13, the support member (B) or the lifting member of the cover 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 width TS needs to be reserved on the rear side of the cover (D). The resulting problem is that the depth and width of the cover body (D) become longer, and the depth of the device body (E) becomes longer accordingly. In recent years, miniaturization has become an important issue in business machines such as photocopiers and multifunction machines.

Therefore, the object of the present invention is to provide a cover that can reduce the depth and width of the cover (original pressing plate), and can open the cover that can open and close office machines such as photocopiers or multifunction machines that use this cover opening and closing device. Closing device and business machine using the cover opening and closing device. In addition, since the field of use of the cover opening and closing device of the present invention is not limited to business machines such as photocopiers or multifunction machines, the manuscript pressing plate is called a cover, and the manuscript pressing plate opening and closing device is used as the cover opening and closing device. Close 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 part of the main body of the office machine; and a support member, which is rotatably mounted to The two side panels of the mounting member; a sliding member located on the outer side of the supporting member and slidably mounted on the supporting member through the sliding device in the up and down direction; a lifting member installed on the rear end side of the cover, It is rotatably mounted on the upper part of the sliding member through the second connecting member in the direction opposite to the supporting member; a pressure-receiving member is located above the first connecting member and is mounted on the upper part of the side plates of the mounting member ; A slider cam member in contact with the pressure member and slidably accommodated between the two side plates of the support member; an elastic member, elastically arranged between the sliding cam member and the abutment plate, abutting The plate is arranged on the free end side of the supporting member; and a traction elastic member is arranged between the supporting member and the sliding member in a tensioned state, and the sliding member is always pulled to the mounting member side.

According to the present invention, the sliding member is configured such that when a heavy manuscript such as a book is placed on the manuscript placing table on the main body side of the device and the cover is closed, the sliding member and the lifting member resist the pulling elasticity. The pulling force of the member slides upward, and the lifting member rotates in a direction different from the rotation direction of the supporting member through the second connecting member, so that the cover body 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 part installed in the vertical direction along both side plates of the support member; and a roller on both side plates of the sliding member to be engaged with the rail part and to be 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 connecting member and the second connecting member in a tensioned state.

According to the present invention, it is a business machine using the lid opening and closing devices of the above-mentioned inventions.

According to the present invention, since it is possible to omit the wide width in the depth direction of the lower end side of the rear portion of the cover body, the support member or the lifting member can be omitted, thereby providing a machine that can also reduce the depth of office machines such as photocopiers or multifunction machines. A cover opening and closing device that is wide and can contribute to the miniaturization of a business machine and a business machine using the cover opening and closing device.

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

In the present invention, since the sliding device can be constructed using a simple mechanism of rails and rollers, it is easy to reduce the number of parts and manufacturing costs.

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

A: Business machine

B: Cover opening and closing device

C: Cover

c: Automatic document feeding device

D: Device body

d: Original placement table

M: Heavy original

R9: Arrow

TS: Installation width

1: Install components

1a: Installation base

1b: Both side panels

1c: backplane

1d: 1st connecting member mounting hole

1e: Mounting hole of pressure member

1g: mounting hole

1h: mounting hole

1i: Snap groove

1j: clip

1m: mounting screw

1n: install button

2: Supporting member

2a: Backplane

2b: Both side panels

2c: Keep the board

2d: abutment plate

2e: 1st connecting member jack

2f: connecting part

2g: stop hole

3: The first connecting member

3a: Bearing components

3b: Gasket

3c: E-ring

3d: D-shaped cutting surface

3e: surrounding groove

3g: D-shaped cutting surface

3h: bearing hole

4: The second connecting member

4a: Shaft

4b: E-ring

4c: Surrounding groove

4e: surrounding groove

5: Compression member

5a: Compressed pin

6: Lifting member

6a: Backplane

6b: Both side panels

6c: Installation base

6d: 2nd connecting member connecting hole

6f: Through hole

6g: fixing screw

6i: internal thread

7: Sliding member

7a: Link plate

7b: Both side panels

7d: 2nd connecting member socket

7e: convex

8: Traction adjustment device

8a: adjustment screw

8b: screw hole

9: Sliding device

9a: Wheel

9b: Roll pin

9c: Roller pin mounting hole

9d: Slide part

9e: Through hole

9f: Mounting screws of the slide rail

9g: internal thread

10: Slider cam member

10a: Cam

10b: Opening

10c: Lid

10d: bottom surface

10e: cylindrical part

12: Elastic member

12a: coil spring

12b: upper end

12c: bottom

13: Elastic member for traction

13a: coil spring

13b: upper end

13c: bottom

14: Damper

14a: cylinder

14b: Flange

14c: Piston rod

14d: Through hole

14e: convex

15: Lifting mechanism

16: Lifting mechanism

A: Cover opening and closing device

B: Supporting member

C: Lifting components

D: Cover body

E: Device body

Fig. 1 is a side view of a compound machine showing an example of a business machine using the lid opening and closing device of the present invention, in a state where the lid is opened.

Fig. 2 is a side view of the cover opening and closing device shown in Fig. 1 enlarged, showing the state of closing the cover.

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

Fig. 4 is an exploded perspective view showing the cover opening and closing device shown in Fig. 3;

Fig. 5 is an explanatory diagram showing the structure of the sliding device of the cover opening and closing device shown in Fig. 3.

Fig. 6 is a longitudinal sectional view showing the 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 the state of using the lid opening and closing device shown in Fig. 6 and opening the lid to an intermediate opening angle, in which (a) represents a state of 60 degrees, and (b) represents a state of 80 degrees status.

Fig. 8 is a longitudinal sectional view showing a state in which the cover body opening and closing device shown in Fig. 6 is used and the cover body is opened 90 degrees.

Fig. 9 is a longitudinal cross-sectional view showing another position in a state where the cover opening and closing device shown in Fig. 6 is used and the cover body is closed, and an explanatory view of the operation of the sliding device.

Fig. 10 is a longitudinal cross-sectional view showing a state where the cover body is opened to 90 degrees using the cover body 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 heavy original such as a book in the cover opening and closing device shown in FIG. 6, where (a) is a state before the operation; (b) ) Is the state when the action ends.

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

Fig. 13 is an explanatory diagram showing the state of the cover body of the conventional cover body opening and closing device.

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

In addition, the terms of the mounting member 1, the supporting member 2, the lifting member 6, the pressure member 5, the elastic member 12, etc. described in this specification and the scope of the patent application are not limited to the specific mounting member 1 used in this embodiment. , The supporting 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 Figure 1, on the main body D of the office machine A (multifunctional machine) of the present invention, a pair of cover opening and closing devices (only one of them is shown) are installed, which are spaced apart from the original placement table d In the vertical direction, the cover C equipped with the automatic document feeding device c is installed in the pair of cover opening and closing devices in an open and close manner. In one of these pair of lid opening and closing devices, the lid opening and closing device B shown in the figure It is used for the heavy mechanism side of the automatic document feeder c, and the load applied during the opening and closing operation is large, so its elastic member 12 adopts a double coil spring method with two coil springs side by side. On the other hand, since the load of the lid opening and closing device on the side not shown in the figure is relatively small, although it is not shown, the lid opening and closing device on this side is small, and the elastic member 12 used for this is Use a single coil spring method consisting of a coil spring or use a torsion spring. However, since this not-shown cover opening and closing device 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 business machines, the weight of the cover C will increase, so no matter whether the coil spring is two coil springs or one coil spring, in some cases, coil springs of different diameters are arranged in concentric circles. Overlapping use.

As shown in FIG. 2, the cover opening and closing device B mounts the mounting base 6c of the lifting member 6 to the rear end of the cover C. Here, the rear end is not limited to the rear end side surface, and includes a position that enters inward from the rear end side surface. When the cover body C is closed and closed, the cover body C is parallel to the document placement table d of the device main body D and is in close contact with the document placement table d to prevent light leakage.

As shown in Figures 2 to 11, the structure of the cover opening and closing device B of the present invention includes: a mounting member 1 mounted on the upper end side of the rear part of the device main body D; a supporting member 2 through the first connecting member 3 It is rotatably mounted to the side plates 1b, 1b of the mounting member 1; a sliding member 7 is located on the outer side of the supporting member 2 and is slidably mounted to the supporting member 2 through the sliding device 9 up and down; A lifting member 6 is installed on the rear end side of the cover body C, and is rotatably installed on the upper part of the sliding member 7 in a direction opposite to the supporting member 2 through the second connecting member 4; a pressure receiving member 5 is located Above the first connecting member 3 and mounted on the upper side of the side plates 1b, 1b of the mounting member 1; a slider cam member 10, which is in contact with the pressure member 5 and is slidably accommodated on both sides of the support member 2. Between the side plates 2b, 2b; an elastic member 12 elastically arranged between the sliding cam member 10 and the abutment plate 2d, the abutment plate 2d is arranged on the free end side of the support member 2; and an elastic member 13 for traction, It is provided between the first connecting member 3 and the second connecting member 4 in a tensioned state, and the sliding member 7 is always pulled to the mounting member 1 side. Moreover, with this structure, even if the lid opening and closing device B is used, the depth of the lid C can be reduced, and the office machine A using this lid opening and closing device B can also be miniaturized.

Among them, the structure of the mounting member 1 includes: a mounting base 1a, which is mounted on the device main body D; two side plates 1b, 1b, from both ends of the mounting base 1a to the mounting base 1a Bend in the orthogonal upward direction (including the slightly orthogonal direction); and a slightly rectangular back plate 1c, from one end (rear end) of the mounting base 1a to the upper perpendicular to the mounting base 1a Bend in the direction (also including the slightly orthogonal direction) so that the engaging members 1j, 1j provided on both sides thereof are engaged with the engaging grooves 1i, 1i provided on the side plates 1b, 1b of the mounting member 1 .

The first connecting member mounting holes 1d and 1d of the mounting member 1 are through holes for allowing the first connecting member 3 to be 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 connecting member 3 penetrates the bearing holes 3h, 3h of the bearing members 3a, 3a mounted on the first connecting member mounting holes 1d, 1d of the mounting member 1, and connects the first connecting member insertion hole 2e of the supporting member 2 , 2e, by inserting the E-ring 3c through the spacers 3b, 3b into the peripheral grooves 3e, 3e provided at one end protruding from the first connecting member insertion hole 2e to prevent the first connecting member 3 from being removed from the supporting member 2 fall off.

In addition, the first connecting member 3 may not be provided as a single shaft body, but may be divided into two sections so that the side plates 1b, 1b of the mounting member 1 and the side plates 2b, 2b of the support member 2 are separately connected with a common axis. In addition, the case where the respective side plates 1b, 1b, 2b, and 2b are connected by eyelets, respectively, is also included.

Above the side plates 1b, 1b of the mounting member 1, pressure-receiving member mounting holes 1e, 1e located above the first connecting member 3 are provided. In the embodiment, these pressure-receiving member mounting holes 1e, 1e are non-rotatably mounted as through holes of the pressure-receiving member 5 of the shaft. After the pressure receiving pin 5a constituting the pressure receiving member 5 is 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 using an E-ring, or can be rotatably mounted to the pressure member mounting holes 1e, 1e, or can be coated with resin.

Furthermore, the pressure-receiving member 5 may be integrally or integrally constituted by the pressure-receiving pin 5a and the rotating roller, and is rotatably mounted to the pressure-receiving member mounting holes 1e, 1e. The pressure-receiving member 5 may also be composed of the following components: a metal-made pressure-receiving pin 5a, pivotally mounted between the two side plates 1b, 1b of the mounting member 1, and a synthetic resin rotating roller, which passes through and is installed here The insertion hole in the axial direction of the pressing pin 5a is rotatably mounted to the pressing pin 5a. The pressure-receiving member 5 can also be set to have a vertical cross-sectional shape other than a circle so that it cannot be rotated, and the expansion and contraction of the elastic member 12 following the rotation of the supporting member 2 is controlled in a predetermined pattern. The material of the rotating roller is not limited to synthetic resin, and may be sintered metal, ceramics, machined products or others. In addition, the pressure-receiving member 5 may also be a synthetic resin cylinder covered with a metal shaft, including the The first connecting member 3 is provided with a fixture protruding.

The cylindrical side surface of the pressure receiving member 5 abuts the cam portion 10 a of the slider cam member 10. Apply a layer of grease (not shown) to the contact surface of the cam portion 10a and the pressure member 5. Alternatively, the cam portion 10a may be configured in a curved R-shape, and the rotating roller supported by the pressure pin 5a is configured such that the side of the sliding contact portion contacting the cam portion 10a is the R-shaped surface with the cam portion 10a The shape of the contact. The mounting holes 1g and 1h provided in the mounting base 1a are through holes for inserting mounting screws 1m or mounting buttons 1n when mounting the mounting base 1a to the device body D.

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

As described above, the side plates 2b and 2b are rotatably connected to the side plates 1b and 1b of the mounting member 1 by the first connection member 3. The first connecting member insertion holes 2e and 2e of the supporting member 2 are through holes for inserting the first connecting member 3. The stop holes 2g and 2g of the support member 2 are used to insert stop pins (not shown) when the support member 2 is assembled, and are used to maintain the elastic member 12 in a compressed state between the slider cam member 10 and the abutment plate 2d. hole.

As shown in FIG. 4, in the supporting member 2, the slider cam member 10 is clamped in the C-shaped part of the plane section surrounded by the back plate 2a, the side plates 2b, 2b and the two holding plates 2c, 2c, and can be The sliding manner is accommodated in the expansion and contraction direction of the elastic member 12. The sliding cam member 10 is pushed by the elastic member 12 to abut against the pressure receiving member 5, and expands and contracts according to the rotational position of the support member 2 relative to the mounting member 1, thereby generating an auxiliary force in the direction of opening the cover C. In addition, When the cover body C is closed, a cushioning effect is produced.

The pressure receiving member 5 is attached to the upper part of both side plates 1b and 1b of the mounting member 1 so that it may be located above the 1st connection member 3. Therefore, as shown in Figure 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 of the elastic member 12 is maximized when the cover C is closed. And output the maximum assisting force. As shown in Figure 8, when the support member 2 is horizontally opened, the elastic The amount of compression of the sexual member 12 is minimized and outputs the smallest auxiliary force.

As shown in FIG. 4, the slider cam member 10 is formed as a tube with a substantially rectangular cross-section and a bottom, and is accommodated in the supporting member 2 so that the openings 10b, 10b and the abutting plate 2d of the supporting member 2 face each other . As shown in FIG. 6, the cam portion 10 a of the slider cam member 10 abuts on the pressure receiving member 5. At the end of the sliding cam member 10 on the side of the pressure member 5, a cam portion 10a is provided, which is inclined in one direction and the upper surface is flat; at the same time, a cover portion 10c is provided, which is used to cover the pressure member 5 with lubrication The 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 pressurized and held, which is composed of a pair of coil springs 12a, 12a. The pair of coil springs 12a and 12a push the sliding cam member 10 and the abutment plate 2d of the support member 2 in directions away from each other. The abutment plate 2d abuts on the coil springs 12a and 12a 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 abutment plate 2d, and the upper surface of the flange portion 14b is brought into close contact with the lower surface of the abutment plate 2d.

The lower ends 12c and 12c of the coil springs 12a and 12a are in contact with the bottom surface 10d of the opening 10b 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 abuts against the flange portion 14b of the damper 14 held by the abutment plate 2d of the support member 2. Thereby, the coil spring 12 a presses the flange portion 14 b of the damper 14 against the abutment plate 2 d of the supporting 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 parallel or tandem. For example, it can be arranged in concentric circles into two parallel or two series or only one.

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

The slider cam member 10 is pressed by the pressure receiving member 5 mounted on the mounting member 1 to press the elastic member 12 to compress it. When the supporting member 2 rotates in the opening direction of the cover C relative to the mounting member 1 with the first connecting member 3 as the center, the sliding cam member 10 moves in the direction of the mounting member 1 and the compression of the elastic member 12 is reduced. Therefore, the elastic member 12 applies auxiliary force to the lifting member 6 via the supporting member 2 and the sliding member 7 to reduce the force required for opening the lid C.

From the closed angle of the cover body C of 30 degrees to the closed position of 0 degrees shown in Figure 6, the damper 14 The piston rod 14c is in contact with the cylindrical portion 10e. 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 accompanied by viscous resistance to the supporting member 2. That is, to prevent sudden rotation and avoid collision between the device main body D and the cover C.

The slider cam member 10 is in contact with the first connecting member 3 from the opening angle of the cover shown in Figure 7(a) of 60 degrees to the opening position of 90 degrees shown in Figure 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 the auxiliary force to the support member 2. However, since the position of the center of gravity of the cover body C is substantially at a certain height within the range of 60 degrees to 90 degrees of the cover body C, the user can rotate the cover body C without being hindered by the weight of the cover body C.

As shown in FIGS. 3 and 5, the sliding member 7 is located outside the supporting member 2 and is slidably mounted to the supporting member 2 through the sliding device 9 in the vertical direction. Here, the so-called up-down direction is described based on the closed state of the cover C, in other words, the direction along the back plate 2a or the diameter direction of the rotation centered on the first connecting member 3. The structure of the sliding device 9, 9 includes; a sliding rail portion 9d, 9d, installed in the vertical direction along the side plates 2b, 2b of the supporting member 2; and a roller 9a, and sliding on the side plates 7b, 7b of the sliding member 7 The rail parts 9d and 9d are engaged with each other while being guided by the slide rail parts 9d and 9d and assist the sliding 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, 7b, which are bent downward in the vertical direction from both ends of the connecting plate 7a. Roll pin mounting holes 9c, 9c are formed in the side plates 7b, 7b. Insert the tip of the metal roller pins 9b, 9b that penetrate the hard resin rollers 9a, 9a into the roller pin mounting holes 9c, 9c, and rivet the rollers 9a, 9a from the opposite side of the insertion direction. It is rotatably mounted to the sliding member 7.

On both side plates 2b, 2b of the support member 2, internal threads 9g, 9g are formed. The slide rail parts 9d and 9d are fixed to the support member 2 by screwing the slide rail part mounting screws 9f and 9f through the through holes 9e and 9e of the metal slide rail parts 9d and 9d to the female threads 9g and 9g.

The support member 2 with the slide rail portions 9d and 9d is inserted into the sliding member 7 with the rollers 9a and 9a in the direction of the arrow R9. The lower end 13c of the traction elastic member 13 and the second The peripheral grooves 3e, 3e of a connecting member 3 are engaged, and the sliding devices 9, 9 are assembled. Elastic member for traction 13 The upper end 13b of the coil spring 13a is engaged with the peripheral grooves 4e, 4e of the second connecting member 4, and the lower end 13c is engaged with the peripheral grooves 3e, 3e of the first connecting member 3, and is set in a tensioned state. Between the first connecting member 3 and the second connecting member 4, 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 lifting member 6 is pivoted in the direction opposite to the supporting member 2 via the second connecting member 4 axis. The second connecting member insertion holes 7d and 7d of the sliding member 7 are inserted into the through holes of the second connecting member 4. The second connecting member 4 is a metal round rod with peripheral grooves 4c, 4c and peripheral grooves 4e, 4e formed at both ends, and its shaft 4a is inserted into the second connecting member insertion hole 7d of the sliding member 7. 7d and the second connecting member connection holes 6d, 6d of the lifting member 6 connect the lifting member 6 to the support member 2 so as to be rotatable in a direction opposite to the direction of rotation of the support member 2 with respect to the mounting member 1. The disc-shaped protrusions 7e, 7e provided at approximately the center of the side plates 7b, 7b of the sliding member 7 are used to evenly ensure the side plates 7b, 7b of the sliding member 7 and the side plates 6b, 6b of the lifting member 6 A predetermined space between the spacer members.

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

As shown in FIG. 3, the lifting member 6 is arrange|positioned so that the support member 2 and the sliding member 7 may be covered from the outside. By fitting the E-rings 4b, 4b into the peripheral grooves 4c, 4c protruding from both ends of the second connecting member connecting holes 6d, 6d of the elevating member 6, the second connecting member 4 is prevented from detaching from the elevating member 6.

Also, like the first connecting member 3, the second connecting member 4 may be divided into two sections, and the side plates 7b, 7b, 6b, and 6b of the sliding member 7 and the elevating member 6 are separately connected to each other with a common axis. Eyelets can also be used in some cases. In addition, between the side plates 7b, 7b of the sliding member 7 of the part connected by the second connecting member 4 and the side plates 6b, 6b of the lifting member 6 can be provided with friction washers or spring washers of conventional structures. Mechanism as a friction torque generating device. According to the above configuration, it is possible to more reliably prevent only the lifting member 6 from rotating when the lid body C is opened and closed, and a stable opening and closing operation can be expected.

The traction elastic member 13 is provided in the first connecting member 3 and the second connecting member in a tensioned state Between member 4. The traction elastic member 13 has an annular engagement portion formed at the upper end 13b and the lower end 13c of the coil spring 13a 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 connecting member 3, the influence on the auxiliary force of the elastic member 12 that rotates with the support member 2 can be reduced. In addition, since the upper end 13b and the second connecting 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 adjusting screw 8a, which is attached to the screw hole 8b of the connecting plate 7a of the sliding member 7. By rotating 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 above-mentioned embodiment 1 is used, especially as shown in Figs. 1, 2 and 6, the lifting member 6 with the cover C is positioned in a slightly vertical direction when the cover C is closed and closed. Therefore, the width in the depth direction for mounting the supporting member 1 or the lifting member 6 to the lower end side of the rear portion of the cover C can be omitted. Therefore, the width in the depth direction of the cover C can be shortened, and this contributes to the miniaturization of the office machine A. In addition, by shortening the width of the cover body C in the depth direction, the weight moment of the cover body C is reduced, reducing the auxiliary load of the cover body opening and closing device B and realizing the improvement of the cover body opening and closing device B itself miniaturization.

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

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

Example 2

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

As shown in Figure 12(a), since the cover C is in contact with the corners of the heavy original M during the closing process, if it is further pressed down, the sliding member 7 is resisted by the sliding devices 9, 9 The pulling force of the pulling elastic members 13 and 13 rises, and at the same time, the lifting member 6 rotates counterclockwise with the second connecting 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 explained. As shown in FIG. 6, when the closed state of the cover body C is 0 degrees, the moment of weight of the cover body C resists the auxiliary torque of the elastic member 12, so that the cover body C is pressed against the original placement table d, Maintain a stable closed state. Furthermore, 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. In addition, here, by forming a predetermined inclination on the cam portion 10a of the slider cam member 10, the support member 2 can output from the pressure receiving member 5 through the sliding cam member 10 a direction in the pressing direction of the cover C thrust.

The opening angle of the cover C is within the range of 30 to 60 degrees at which the rotation torque generated by the cover C around the first connecting member 3 and the auxiliary torque of the cover opening and closing device B are balanced. If you release your hand from the cover C, it will not fall naturally. Therefore, the original can be placed on the original placement table d with both hands. Moreover, the self-standing holding angle with respect to the cover C is not limited to the embodiment. In addition, in order to keep the posture of the cover C stable during the opening process, the auxiliary torque (the thrust of the elastic member 12) of the cover opening and closing device B can be set even in the range of opening angle of 30 degrees to 60 degrees. The cover C can also be rotated by pushing the cover C upwards.

Then, since the elastic member 12 continues to push the pressure receiving member 5 outward through the sliding cam member 10 during the process of opening the cover C from the closed state to a predetermined angle (60 degrees), the cover C is lightening itself Under the weight state, use light operating force to open from the closed state to a predetermined angle (60 degrees) Then, as shown in FIG. 7(a), it stops at a predetermined angle (60 degrees) at which the slider cam member 10 and the first connecting member 3 abut. In 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 of opening the cover C.

As described above, when the opening angle is 60 degrees or more, the moment of weight of the lid body C with the first connecting member 3 as the center becomes smaller, so the elastic member 12 can also open the lid body through the sliding cam member 10 The power of C becomes smaller. In consideration of these issues, the elastic member 12 is designed to maintain a predetermined angle (60 degrees) even if the cover C is not supported by hands.

On the other hand, in the process of closing the lid body C in the open state of 90 degrees to the closed state of 0 degrees, where the opening angle is within the range of 90 degrees to 60 degrees, as described above, the lid body opening and closing device B does not The first connecting member 3 that outputs auxiliary force and does not rotate serves as a friction resistance element of the slider cam member 10.

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

In addition, the sliding device 9 only needs to be a mechanism that can mount the sliding member 7 to the support member 2 (the diameter direction of the rotation of the support member 2) so as to be slidable in the vertical direction. Therefore, it can be replaced with a mechanism other than the combination of the roller 9a and the slide rail portion 9d, for example, a combination of a slide shaft and a slide 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 keep the posture of the cover C stable when the cover C is opened, an elastic member can also be added, which is used 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, the depth dimension of the cover body can be reduced, and the cover body can be miniaturized. In addition, the present invention is preferably used for a cover that can miniaturize the main body of a business machine with the cover Body opening and closing device and business machine using this cover body opening and closing device.

B: Cover opening and closing device

1: Install components

1a: Installation base

1b: Both side panels

1i: Snap groove

1j: clip

2: Supporting member

3: The first connecting member

4: The second connecting member

4b: E-ring

5: Compression member

6: Lifting member

6g: fixing screw

7: Sliding member

8: Traction adjustment device

8a: adjustment screw

9: Sliding device

9a: Wheel

10: Slider cam member

12: Elastic member

13: Elastic member for traction

13b: upper end

14: Damper

Claims (5)

A cover opening and closing device, the structure of which includes: a mounting member mounted on the upper end side of the rear part of the main body of a business machine; a supporting member rotatably mounted to both side plates of the mounting member through a first connecting member On; a sliding member located on the outer side of the supporting member and slidably mounted to the supporting member in the up and down direction through the sliding device; a lifting member, installed on the rear end side of the cover, through the second connecting member It is rotatably mounted on the upper part 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 part of the two side plates of the mounting member; a slider cam The member is in contact with the pressure member and is slidably accommodated between the two side plates of the supporting member; an elastic member is elastically arranged between the sliding cam member and the abutment plate, and the abutment plate is arranged on the The free end side of the support member; and a traction elastic member, which is arranged in a tensioned state between the support member and the sliding member, and always pulls the sliding member to the side of the mounting member, wherein the rear of the cover The end is mounted to the lifting member. The cover opening and closing device according to claim 1, wherein the sliding member constitutes the sliding member when a heavy original such as a book is placed on the original placement table on the main body side of the device and the cover is closed Together with the lifting member, it slides upward against the pulling force of the traction elastic member, and the lifting member rotates in a direction different from the rotation direction of the supporting member through the second connecting member, so that the cover can cover the supporting member in a horizontal state. On top of heavy originals. The cover opening and closing device according to claim 1, wherein the structure of the sliding device includes: a rail part installed in the up and down direction along the side plates of the supporting member; and A roller is engaged with the rail part on both side plates of the sliding member and guided by the rail part to assist the sliding of the sliding member in the vertical direction. The cover opening and closing device according to claim 1, wherein the traction elastic member is provided between the first connecting member and the second connecting member in a tensioned state. A business machine that uses the cover opening and closing device described in any one of Claims 1 to 4 and installs the cover on the main body of the device.

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