JP2017040863A - Opening/closing support device and various equipment using opening/closing support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening/closing support device of a cover body compact in size and capable of obtaining a necessary and sufficient turning energizing force and various equipment having the opening/closing support device.SOLUTION: An opening and closing support device includes: a mounting member for mounting an opening and closing support device on a rear surface side of an upper end of a device main body side; a support member mounted to a cover body that is turnably journaled at a hinge shaft provided to be positioned on the device main body side of the mounting member; a first spring case stored and fixed inside the mounting member; a second spring case stored inside the first spring case whose upper end side swingably connected to a rear part side that sandwiches the first sprint case and the second spring case via a first connection pin; and an elastic member elastically connected between the first spring case and the second spring case. A second connection pin attached to the upper end part side of the first spring case is engaged with a guide long hole which is provided on both sides of the second spring case, and various equipment using the opening and closing support device are further provided.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a lid opening / closing support apparatus suitable for use in opening / closing a lid body such as a document pressure plate of a copying machine, and various devices using the opening / closing support apparatus.

  2. Description of the Related Art Conventionally, office machines such as copiers, scanners, and printing machines have been provided with a contact glass on the apparatus main body, and a document placed on the contact glass for copying or printing is to be pressed against the contact glass. A document crimping plate (hereinafter also referred to as a lid) is provided, and an opening / closing support device (also referred to as a document crimping plate opening / closing device) is provided between the apparatus main body and the lid to open and close the lid. This opening / closing support device is a kind of hinge mechanism, and has a structure in which a lid is rotatably supported around the axis of a hinge shaft. When the lid is closed, a contact glass provided on the upper surface of the apparatus main body. When the lid is opened, the lid can be opened without feeling the original weight of the lid, and the lid should not fall naturally within the specified opening / closing angle range. It is a mechanism that can be stopped and held.

  Such an opening / closing support device includes an attachment member attached to the apparatus main body, a support member rotatably supported on the attachment member via a hinge shaft, and a support member, and a support member and an attachment member. It is provided with an elastic member accommodated in the mounting member in between, and includes an elastic member that urges the support member in the opening direction. There are two types of attachment members that stand on the upper rear surface side of the apparatus main body, and the present invention belongs to the latter.

JP-A-2015-001619

  The opening / closing support device belonging to the latter has a simple structure, but as shown in FIG. 6A, the opening / closing support device is accommodated in the mounting member in order to urge the support member upward with respect to the mounting member. Since the force point of the elastic member is provided on the front side of the hinge shaft, the hinge shaft is positioned rearward with respect to the main body of the apparatus, and the cover body rotatably attached to the hinge shaft via the support member by that amount. Therefore, in order to obtain a sufficient rotational biasing force by the elastic member, a large spring load must be prepared, which has been an obstacle to downsizing the opening / closing support device.

  This invention is devised to provide a force point by an elastic member that biases the support member upward on the rear side of the hinge shaft, thereby bringing the position of the hinge shaft closer to the device main body side, so that the device main body and the lid body It is necessary to prepare a device having a smaller spring load than that of a conventionally known opening / closing support device after devising so that a gap is not generated as much as possible. To provide an opening and closing support device.

  In order to solve the above problems, the invention of claim 1 is an opening / closing support device for a lid provided between a device body of various devices and a lid body opened and closed with respect to the device body. An attachment member that is attached to stand on the rear surface side of the upper end portion on the apparatus main body side, and the lid body that is rotatably supported by a hinge shaft that is provided on the apparatus main body side of the attachment member. A support member attached to the first member, a first spring case housed and fixed in the attachment member, and an upper end portion of the first spring case housed in the first spring case on the rear side across the hinge shaft of the support member. A second spring case that is slidably connected via a connection pin; and an elastic member that is elastically contacted between the first spring case and the second spring case. Characterized in that the second connecting pin mounted on the end side is engaged in the guide slot provided on both sides of the second spring case.

  According to a second aspect of the present invention, the support member has a plate-like mounting plate portion that is inserted into and fixed to a mounting hole provided in a rear end portion of the lid body.

  A third aspect of the invention is characterized in that the opening / closing support device according to the first aspect is used for various devices.

  According to the first aspect of the present invention, since the force point of the urging force applied to the support member by the elastic member is located behind the hinge shaft, the hinge shaft can be brought closer to the apparatus main body side. As a result, the rotational torque generated around the hinge shaft can be reduced, so that a small elastic member with a smaller spring load than before can be used to obtain a sufficient rotational bias, and the opening / closing support device can be reduced in size and weight. As a result, the cost can be reduced.

  According to the invention described in claim 2, since the structure of the support member becomes simpler, the opening / closing support device can be further reduced in size and weight.

  According to the invention described in claim 3, by using the opening / closing support device described in claim 1, the manufacturing cost of various devices can be reduced.

1 is a perspective view of a copying machine using an opening / closing support device of the present invention. The state which connected the apparatus main body and the cover body using the opening / closing support apparatus of this invention is shown, (A) has shown the state which closed the cover body, (B) has shown the state which opened the cover body. It is an expansion perspective view of the opening / closing support apparatus of this invention. It is a disassembled perspective view of the opening / closing support apparatus of this invention. The operating state of the opening and closing support device of the present invention is shown from the front side, (A) is the state where the lid is closed, (B) is the state where the lid is opened to the intermediate opening angle, (C) is the state The fully open state of the lid is shown. The state which looked at the operation state of the opening-and-closing support device of the present invention in a sectional view is shown, (A) shows the state which closed the lid, (B) shows the state which opened the lid to the intermediate opening angle, (C) Indicates the fully open state of the lid. It is explanatory drawing which shows each structure of a conventionally well-known opening / closing support apparatus and the opening / closing support apparatus which concerns on this invention, (A) shows the conventionally well-known thing, (B) shows what concerns on this invention. Yes.

  In the following, an embodiment according to the present invention will be described as an opening / closing support device for a document crimping plate of a copying machine. However, the opening / closing support device according to the present invention is also applicable to office equipment such as printers, scanners and printing machines other than copying machines. This can be carried out as it is, with only slight design changes taking into account the weight, function, and structure of the pressure plate (lid). Further, it can also be implemented as it is as an opening / closing support device for a cover other than the original pressure plate (for example, a cover of an ink cartridge housing portion, a toilet seat or a lid of a toilet bowl). Accordingly, in the present invention, the original cover is simply referred to as a lid, and devices using this lid are also referred to as various devices.

  FIG. 1 is a perspective view of a copier 1 that is also called an image forming apparatus as an example of various devices. In the drawing, the following description will be given with the front-rear direction of the copying machine 1 as the Y-axis direction, the left-right direction as the X-axis direction, and the vertical direction as the Z-axis direction. The copying machine 1 includes an apparatus main body 2 and a lid (original pressure bonding plate) 3, and the lid according to the present invention is used to press an original (not shown) onto a contact glass 4 on the apparatus main body 2. The open / close support devices 5 and 5 of the (original pressure plate) 3 are composed of a pair of left and right, and particularly, as shown in FIG. It is connected and supported so that it can be opened and closed. Although not shown in the figure, the lid 3 has two types, one with a known automatic document feeder and the other with no automatic document feeder. It can also be applied to the lid body. However, it is preferable that the opening / closing support device 5 for the lid 3 is configured so as to be relatively lightweight without the automatic document feeder and to be able to cope with a thick document by itself being folded. Hereinafter, only one of the opening / closing support devices 5 and 5 will be described because it has the same configuration, but it is possible to arbitrarily select the other to have a different configuration.

  FIGS. 2A and 2B are perspective views showing a state where the opening / closing support device 5 is attached to the copying machine 1, and FIG. 3 is an enlarged perspective view of the opening / closing support device 5. The opening / closing support device 5 includes an attachment member 6 and a support member 7 supported by the attachment member 6 via a hinge shaft 8 so as to be rotatable in the Z-axis direction. As shown in FIG. 2, the attachment member 6 is attached to the rear surface 2a side of the upper end portion of the apparatus main body 2, and a hinge shaft 8 is attached to the upper end portion. The support member 7 is inserted into an attachment hole 3a formed in the rear end surface of the lid body 3, and is fixed to the lid body 3 in the attachment hole 3a. In such a configuration, when the support member 7 rotates around the hinge shaft 8, as shown in FIG. 2A, the lid 3 covers the contact glass 4, and FIG. As shown in (B), the lid 3 is opened and opened between the contact glass 4 and the contact glass 4 exposed.

  FIG. 4 is an exploded perspective view of the opening / closing support device 5. More specifically, the opening / closing support device 5 includes an attachment member 6, a support member 7, a hinge shaft 8 that rotatably connects the rear end portion of the support member 7 to the upper end portion of the attachment member 6, and the inside of the attachment member 6. A first spring case 9 housed in a swingable and slidable manner, a second spring case 10 housed in the first spring case 9, and an elastic spring in the first spring case 9 and the second spring case 10. And an elastic member 11 composed of a pair of compression coil springs 11a and 11b.

  The mounting member 6 is manufactured by pressing a metal plate such as SUS, and the back plate portion 6a located in the Y-axis direction of the apparatus main body 2 and substantially right angles at both ends of the back plate portion 6a. Left and right side plate portions 6b, 6b provided by bending in the front Y-axis direction, mounting plate portions 6c, 6c formed by bending from the end portions of the side plate portions 6b, 6b in the outer X-axis direction, and a back plate A bottom plate portion 6d having a bent portion 6j on the front side connected to the lower ends of the portion 6a and the side plate portions 6b, 6b. The back plate portion 6a, the left and right side plate portions 6b, 6b, and the bottom plate portion 6d The first spring case 9 and the second spring case 10 are accommodated in the accommodating portion 6e defined in the above.

  The upper ends of the side plate portions 6b and 6b of the mounting member 6 are respectively provided with connecting portions 6f and 6f protruding in the front Y-axis direction. These connecting portions 6f and 6f are provided with a first shaft of the hinge shaft 8. Connecting holes 6g, 6g are provided, and each mounting plate portion 6c, 6c is fixed to the upper end rear surface 2a side of the apparatus main body 2 with a mounting screw (not shown), so that the mounting position of the hinge shaft 8 and the apparatus As shown in FIG. 6B, the gap between the upper end rear surface 2a of the main body 2 is not generated. In addition, this reduces the rotational torque created around the hinge shaft 8 and allows the elastic member 11 to use a spring having a small spring load, thereby contributing to a reduction in size and weight of the opening / closing support device 5. It is supposed to be. Further, what is indicated by an instruction symbol 6h on each attachment plate portion 6c, 6c is an attachment hole used when attaching the attachment member 6 to the apparatus main body 2 side, and below each side plate portion 6b, 6b, an indication symbol 6i, What is shown by 6i is a fourth connection hole through which the third connection pin 19 with the flange portion 19a is inserted. Note that the gap in the Z-axis direction between the upper end rear surface 2a side of the apparatus main body 2 and the hinge shaft 8 is 0 in the embodiment, but setting this to a minus is an item that can be arbitrarily selected.

  The support member 7 is also manufactured by pressing a metal plate such as SUS. The support member 7 is formed by bending a plate-shaped mounting plate portion 7a and both ends of the mounting plate portion 7a in the lower Z-axis direction. A pair of side plate portions 7b, 7b (only one is displayed) configured as described above are provided, and each of the side plate portions 7b, 7b is further provided with operating plate portions 7c, 7c protruding in the rear Y-axis direction. ing. Three mounting holes 7d, 7d, and 7d are formed in the mounting plate portion 7a, and when inserted into the mounting hole 3a formed on the back end surface of the lid 3, as shown in FIG. Further, it is fastened to the lid 3 side by screws (not shown) that pass through the mounting holes 7d, 7d, 7d. A pair of reinforcing ribs 7e and 7e for reinforcing the strength are formed on the mounting plate portion 7a on the rear side by pressing. The strength of the mounting plate portion 7a is also reinforced by the side plate portions 7b and 7b that are bent at both ends of the mounting plate portion 7a.

  The side plate portions 7b and 7b are provided with bearing holes 7f and 7f at positions facing each other, and the operation plate portions 7c and 7c are provided with second connection holes 7g and 7g. A hinge shaft 8 attached to the attachment member 6 is connected to the bearing holes 7f, 7f provided in the side plate portions 7b, 7b, and a second connection hole 7g, 7g, which will be described later, via a first connection pin 12. The spring case 10 is connected.

  The bearing holes 7f and 7f provided in the side plate portions 7b and 7b of the support member 7 have flange portions 14a and 14a on one end side, and follow the flange portions 14a and 14a in the direction of the outer peripheral axis. A pair of bearing members 14, 14 having provided anti-rotation convex portions 14 b, 14 b are attached in a non-rotating state to insert the hinge shaft 8, and the cylindrical spacer members 15, 15 are respectively the same. The hinge shaft 8 is inserted between the side plate portions 6b and 6b of the mounting member 6 while being inserted. The hinge shaft 8 has one end portion with a flange portion 8a, and is prevented from coming out by caulking the other end portion side. An E-ring can be used instead of this caulking. Each bearing hole 7f, 7f (only one is shown) is provided with locking grooves 7h, 7h (only one is shown) that engages the convex portions 14b, 14b provided on the bearing members 14, 14. . The second connecting holes 7g and 7g also have locking grooves 7j and 7j that are engaged with convex portions 16b and 16b (only one is shown) of bearing members 16 and 16 with flange portions 16a and 16a, which will be described later. Is provided.

  The first spring case 9 is also manufactured by pressing a metal plate such as SUS, and is accommodated in the accommodating portion 6e of the attachment member 6. The first spring case 9 has a front plate portion 9a on the front side, and a pair of side plate portions 9b and 9b formed by bending the left and right ends of the front plate portion 9a at right angles to the rear in the Y-axis direction. The upper end portion of the front plate portion 9a is provided with an upper plate portion 9c that is bent rearward in the Y-axis direction. The upper plate portion 9c is provided with a pair of round convex portions 9d and 9d facing downward, and the respective round convex portions 9d and 9d are fitted into the upper end portions of the compression coil springs 11a and 11b, which will be described later. The installation state of the coil springs 11a and 11b is stabilized. Further, a pair of third connection holes 9e, 9e are provided above the upper plate part 9c of each side plate part 9b, 9b, and a fifth connection hole 9f is provided on the lower end side of each side plate part 9b, 9b. , 9f (only one is displayed). The fifth connection holes 9f and 9f (only one shown) are also provided with locking grooves 9g and 9g (only one shown) that engage with the convex portions 18b and 18b of the bearing members 18 and 18, respectively. The third connection holes 9e and 9e are provided flush with the upper surface of the upper plate portion 9c, and the outer peripheral portion of the second connection pin 13 with the flange portion 13a that passes through the third connection holes 9e and 9e is formed in the upper plate portion 9c. By contact, the upper plate portion 9c is prevented from bending upward due to the elastic force of the elastic member 11. The second connecting pin 13 has a flange portion 13a on one end side and is restrained from coming off by caulking the other end side, but an E-ring may be used.

  Bearing members 18 and 18 having flange portions 18 a and 18 a and convex portions 18 b and 18 b are attached to the fifth connection holes 9 f and 9 f, and a fourth connection provided on both side plate portions 6 b and 6 b of the attachment member 6. By passing the third connecting pin 19 connected to the holes 6i and 6i through the bearing members 18 and 18, the first spring case 9 is connected to the housing portion 6e of the mounting member 6 so as to be swingable. The third connecting pin 19 has a flange portion 19a on one end side and is restrained from coming off by caulking the other end side, but an E-ring may be used.

  Similarly, the second spring case 10 is manufactured by pressing a metal plate such as SUS. The second spring case 10 is accommodated in the first spring case 9 while being accommodated in the attachment member 6 together with the first spring case 9. 6e. The first spring case 9 is formed by bending a back plate portion 10a at a position overlapping the back plate portion 6a of the mounting member 6 on the back side, and right and left ends of the back plate portion 10a at right angles to the front side in the Y-axis direction. A pair of side plate portions 10b and 10b configured, and a back plate portion 10a and a bottom plate portion 10c provided at the lower end of each side plate portion 10b and 10b are provided. The bottom plate portion 10c is provided with a pair of round convex portions 10d and 10d facing upward, and these round convex portions 10d and 10d are fitted to the lower end side of the compression coil springs 11a and 11b described later to increase the stability of the position. I am trying.

  Further, a guard plate portion 10e having a low height is provided on the front side of the bottom plate portion 10c, and the bottom plate portion 10c is bent from the lower side to support the bottom plate portion 10c from the lower side. The bottom plate portion 10c is devised so as not to bend downward due to the elasticity of the member 11. Each side plate portion 10b, 10b is provided with a pair of guide long holes 10f, 10f positioned above, and a pair of sixth connection holes 10g, 10g is provided on the upper end side of each side plate portion 10b, 10b. It has been. The sixth connection holes 10g and 10g are connected to the first connection pin 12 with the flange portion 12a passing through the bearing members 16 and 16 and the spacer members 17 and 17 attached to the second connection holes 7g and 7g of the support member 7, respectively. In addition to being connected, the second connection pin 13 through the third connection holes 9e, 9e of the first spring case 9 is engaged with the first spring case 9 by passing through the guide long holes 10f, 10f. The second spring case 10 is housed in the first spring case 9 and is connected to the rear end side of the support member 7 so as to be pivotable and slidable.

  The elastic member 11 includes a pair of compression coil springs 11 a and 11 b juxtaposed in the first spring case 9 and the second spring case 10, and the upper plate portion 9 c of the first spring case 9 and the bottom plate portion of the second spring case 10. The support member 7 that is elastically contacted between 10c and connects the upper end portions of the side plate portions 10b and 10b of the second spring case 10 is configured to be urged to rotate upward. The elastic member 11 is composed of a pair of compression coil springs 11a and 11b in the embodiment, but may be composed of a single member, or two compression coil springs may be overlapped in the axial direction. It may be used. In the present invention, since the hinge shaft 8 is closer to the apparatus main body than the conventional one, the rotational torque created around the hinge shaft 8 is reduced, and a small compression coil with a small spring load correspondingly. A spring can be used. In addition, you may comprise the elastic member 11 so that a tension coil spring may be used.

  With the configuration as described above, the operation of the opening / closing support device 5 of the present invention will be described based on the perspective view shown in FIG. 2 and the operation diagrams shown in FIGS. 5A and 5B. FIG. 5A is an operation diagram of the opening / closing support device 5 as viewed from the front side, and FIG. 5B is an operation diagram of the state of FIG. 5A as a side sectional view. FIG. 2A, FIG. 5A, and FIG. 5B on the left side show the state of the opening / closing support device 5 in a state where the lid 3 is closed. In this state, the lid 3 is in a state of covering the contact glass 4 and is crimped onto the contact glass 4 by its own weight. In this state, the first connecting pin 12 connected to the support member 7 is located at the uppermost position, and at the same time, the second connecting pin 13 is located at the lowermost position in the guide long holes 10f and 10f. That is, the second spring case 10 to which the second connection pin 13 is connected is composed of the compression coil springs 11 a and 11 b between the upper plate portion 9 c and the bottom plate portion 10 c by the cooperative action with the first spring case 9. The elastic member 11 is in the most compressed state. Here, when the lid body 3 is lifted, the support member 7 rotates upward in the clockwise direction as shown in each central view (B) in FIGS. 5A and 5B. At this time, the first connecting pin 12 pivots downward (Z-axis negative direction) around the hinge shaft 8 as the support member 7 rotates upward. At the same time, the second connecting pin 13 moves upward in the guide elongated holes 10f, 10f, so that the lid 3 feels its original weight by the rotational biasing force generated by the elastic force of the compression coil springs 11a, 11b. Will be opened without any problems.

  Further, when the lid 3 is pushed up to the most opened state, the support member 7 is in a substantially upright state as shown in FIGS. 2 (B), 5A, and 5B on the right side (C). The one connecting pin 12 pivots to the lowest position. At the same time, the second connecting pin 13 is moved to the uppermost position along the guide long holes 10f and 10f, and the compression coil springs 11a and 11b are in the most extended state while maintaining the compressed state. The connecting pin 13 is regulated by contacting the upper end portions of the guide long holes 10f and 10f. When the opened lid 3 is closed, it is closed by the reverse action described above, and the elastic member 11 composed of the compression coil springs 11a and 11b is compressed at that time. The falling speed is moderated and it will not be dropped and closed. When the lid body 3 is closed to a predetermined angle, the weight of the lid body 3 is now won. Therefore, the lid body 3 is automatically closed and is crimped to the contact glass 4 side as described above. become.

  FIG. 6 (A) is an explanatory diagram schematically showing the configuration of a conventional opening / closing support device 51 and schematically showing the configuration of the opening / closing support device 5 according to the present invention in FIG. 6 (B). As shown in FIG. 6A, in the configuration of the conventional opening / closing support device 51, a force point by the elastic member 111 is disposed between the hinge shaft 81 and the device main body 21, and between the hinge shaft 81 and the device main body 21, Since the elastic force by the elastic member 111 is applied, it is necessary to increase the distance La between the hinge shaft 81 and the rear upper surface 21 a of the apparatus main body 21, and the hinge shaft is interposed between the hinge shaft 81 and the pressure receiving member 122. A distance Ma located ahead of 81 was present. The rotational torque generated around the hinge shaft 81 by the elastic force of the elastic member 111 increases as the distance of the hinge shaft 81 from the apparatus main body 21 increases. Therefore, when a lid (not shown) attached to the support member 71 is opened with respect to the apparatus main body 21, the distance La between the hinge shaft 81 and the apparatus main body 21 is wide, and therefore, it occurs around the hinge shaft 81. Therefore, it is necessary to use the elastic member 111 having a large spring load. On the other hand, as shown in FIG. 6B, in the opening / closing support device 5 of the present invention, the distance Lb between the hinge shaft 8 and the device main body 2 is 0, and the distance in the above-described configuration diagram 6B. Since it is shorter than La, the rotational torque generated around the hinge shaft 8 when the lid body (not shown in FIG. 6B) attached to the support member 7 is opened is reduced. For this reason, it is sufficient to use the elastic member 11 having a small spring load, so that the apparatus can be miniaturized.

  Since the present invention is configured as described above, the opening / closing support device according to the present invention reduces the gap between the lid body and the hinge shaft at the time of opening, or makes it zero or minus, thereby providing a hinge shaft. The rotational torque generated around the hinge shaft can be reduced by reducing the rotational torque generated around the hinge shaft and reducing the rotational torque generated around the hinge shaft. Therefore, it can be used for a copying machine, a printer, a scanner, a printing machine, etc. as an opening / closing support device that can sufficiently obtain a rotational urging force with respect to the lid even in a small size. Thus, it can be suitably used as various devices using the opening / closing support device configured as described above.

DESCRIPTION OF SYMBOLS 1 Copy machine 2 Apparatus main body 2a Upper end rear surface 3 Cover body (original pressure bonding plate)
3a Mounting hole 5 Opening / closing support device 6 Mounting member 6c Mounting plate portion 7 Support member 7a Mounting plate portion 8 Hinge shaft 9 First spring case 10 Second spring case 10f Guide long hole 11 Elastic member 12 First connecting pin 13 Second connection pin

Claims (3)

An opening / closing support device for the lid provided between a device body of various devices and a lid body opened and closed with respect to the device body,
An attachment member that is attached to stand on the rear surface side of the upper end portion on the apparatus main body side, and an attachment member that is rotatably supported by a hinge shaft provided on the apparatus main body side of the attachment member. A support member, a first spring case housed and fixed in the mounting member, and a first connecting pin which is housed in the first spring case and has an upper end portion on the rear side of the support member sandwiching the hinge shaft And a second spring case that is slidably coupled via an elastic member that is elastically contacted between the first spring case and the second spring case, and is attached to an upper end side of the first spring case. An opening / closing support device, wherein two connecting pins are engaged with guide long holes provided on both sides of the second spring case.   The opening / closing support device according to claim 1, wherein the support member has a plate-like attachment plate portion that is inserted and fixed into an attachment hole provided in a rear end portion of the lid body.   Various devices using the opening / closing support device according to claim 1.

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