Opening / closing support device, and business machine

Abstract

To solve a problem that a large space for a stain preventing mechanism needs to be provided for an attaching member of a hinge in which the stain preventing mechanism is provided for the attaching member in order to prevent attaching of grease, and an attaching shape and a torque generating mechanism are restricted.SOLUTION: An opening / closing support device 10 that connects an opening / closing body 3 to an apparatus body 2 in an openable / closable manner has an attaching member 11, a support member 12 a supporting opening / closing body 3, a slider 13, an elastic member 15, and a cam part 12j provided for the support member 12, and is provided with a stain preventing mechanism 19 which prevents a manuscript or the like from being stained by grease 25 applied to the slider 13 and the cam part 12j, where the stain preventing mechanism 19 is provided between the attaching member 11 and the support member 12, and is constituted to cover both grease attached surfaces of the slider 13 side and the cam part 12j side in a closed state and an opened state of the opening / closing body 3.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to an opening / closing support device and an office machine, and more particularly to an opening / closing support device having a compact dirt prevention mechanism and an office machine having the same. [Background technology]

[0002] Conventionally, there is an original pressure plate that is placed on the contact glass of a copying machine, scanner, printer, etc. and presses an original placed on the contact glass. This original pressure plate is supported by an opening and closing support device fixed to the device body. This opening and closing support device has a kind of hinge mechanism and is configured to support the original pressure plate rotatably around the hinge shaft. When the original pressure plate is closed, the original pressure plate is pressed onto the upper surface of the device body, and when it is opened upward, the contact glass is exposed and an original can be placed on it or removed. For this reason, there is a problem that the lubricating grease applied between the pressure contact surface between the slider slidably provided on the mounting member side and the cam portion provided on the support member side constituting the hinge mechanism, or the grease applied to the coil spring, comes into contact with the end of the original placed on the contact glass and stains it, so a dirt prevention mechanism is provided. An opening and closing support device equipped with this dirt prevention mechanism is known, as described in the following Patent Document 1.

[0003] The following Patent Document 1 describes a hinge that has a shielding portion (cover portion) that covers the contact portion between the slide member and the cam portion, and that, even when the cover portion is housed in the case member when the rotating member rotates in a direction approaching the case member, can separate the cover portion from the inner surface of the case member, thereby preventing the document from getting dirty when the hinge is mounted on an office machine that has a document reading portion (see

[0012] ).

[0004] This hinge had the problem that "the cover is large, and therefore requires a large space for the cover in the case member." Furthermore, because "the cover requires a large space in the case member," there was the problem that "the mounting shape and the torque generating mechanism are restricted." In addition, since a shielding portion is provided on the front side surface of the slider member and the shielding portion moves up and down in accordance with the up and down movement of the slider member, there are cases in which sufficient shielding is not achieved depending on the angle.

[0005] Therefore, the inventors have studied various structures of the hinge (opening / closing support device). As a result, it was found that by making the dirt prevention mechanism (cover part) consisting of two or more pieces and configuring it so that it can be folded and stored compactly between the device main body and the support member (cam bracket) when closed, or by making the dirt prevention mechanism (cover part) consisting of a Mylar sheet part and configuring it so that the Mylar sheet part can be stored compactly in the Mylar sheet part passing hole when closed, or by making the dirt prevention mechanism (cover part) consisting of a covering piece part formed in a concave-shaped part formed on the front of the slider member and configuring it so that the covering piece part can be stored compactly in a storage recess provided in the support member when closed, it is possible to prevent the dirt prevention mechanism (cover part) from taking up a large amount of space in the mounting member (case member) and to prevent any restrictions on the mounting shape and torque generating mechanism, and so decided to file the present application. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6982843 Summary of the Invention [Problem to be solved by the invention]

[0007] The objective of the present invention is to provide a hinge (opening / closing support device) equipped with a dirt prevention mechanism (cover part) that can prevent grease from adhering to documents, etc., and that can prevent a large amount of space from being taken up by a mounting member (case member), and that can prevent restrictions from being imposed on the mounting shape and torque generation mechanism. [Means for solving the problem]

[0008] The present invention has the following configuration. In order to achieve the above-mentioned object, the opening / closing support device of the present invention is an opening / closing support device that connects an opening / closing body to an apparatus main body so that it can be opened and closed, and has a mounting member that is approximately cylindrical with a bottom and is attached to the apparatus main body, a support member that supports the opening / closing body so that it can be opened and closed and is rotatably attached to the upper part of the mounting member via a hinge shaft, a slider that is slidably housed inside the mounting member, an elastic member that is elastically installed between the slider and the bottom of the mounting member, and a cam portion that is pressed against the top of the slider provided on the support member, and is provided with a dirt prevention mechanism that prevents a document that is placed on or removed from the apparatus main body for copying from coming into contact with it and becoming dirty by grease attached to the slider and the cam portion, and is characterized in that the dirt prevention mechanism is provided between the mounting member and the support member, and is configured to cover the grease-adhered surfaces on both the slider side and the cam portion side when the opening / closing body is in the closed state and the open state.

[0009] In the opening / closing support device of the present invention, the dirt prevention mechanism consists of two plates that are rectangular in plan view, and has a mounting member side plate that is attached to the mounting member so as to be rotatable around one side as an axis, and a support member side plate that is attached to the support member so as to be rotatable around one side as an axis, and the mounting member side plate and the support member side plate are connected to each other so as to be rotatable around the other side as an axis, and it is preferable that when the opening / closing body is in the open state, the two rectangular plates in plan view are in a spread state in which one side of the mounting member side plate and one side of the support member side plate are separated from each other, covering and concealing the grease adhered to the slider and the cam portion.

[0010] In the opening / closing support device of the present invention, the dirt prevention mechanism comprises a strip-shaped Mylar sheet portion having one end rising from one side of the mounting portion and the other end bent toward the other side of the mounting portion, and it is preferable that the Mylar sheet portion is exposed when the opening / closing body is in the open position, covering and concealing the grease applied to the slider and the cam portion, and is stored in a Mylar sheet portion passage hole provided in the support member when the opening / closing body is in the closed position.

[0011] In the opening / closing support device of the present invention, it is preferable that the dirt prevention mechanism comprises a cover piece portion formed in a recess formed on the front surface of the slider, and that the cover piece portion is exposed when the opening / closing body is in the open state, covering and concealing the grease adhered to the slider and the cam portion, and is stored in a storage recess provided in the support member when the opening / closing body is in the closed state.

[0012] An office machine according to the present invention is characterized in that it uses any one of the opening and closing support devices described above. Effect of the Invention

[0013] In the opening / closing support device of the present invention, the dirt prevention mechanism is provided between the mounting member and the support member and is configured to cover the grease adhesion surfaces on both the slider side and the cam portion side when the opening / closing body is in the closed state (closed state) and open state (open state), so that the grease adhered to the slider and the cam portion can be covered and hidden even when the opening / closing body is in the open state.

[0014] In the opening / closing support device of the present invention, when the opening / closing body is in the open state, the two plates having a rectangular shape in a plan view are configured such that one side of the mounting member side plate and one side of the support member side plate are in a spread state separated from each other, so that even in the open state, the grease applied to the slider and the cam portion can be covered and hidden. Also, when in the closed state, it can be folded and stored compactly. This makes it possible to prevent grease from adhering to documents, etc., to prevent the mounting members from taking up a large amount of space, and to eliminate restrictions on the mounting shape and torque generation mechanism.

[0015] In the opening / closing support device of the present invention, the Mylar sheet portion is exposed when the opening / closing body is in the open state, so that the grease applied to the slider and the cam portion can be covered and hidden even in the open state. Also, the Mylar sheet portion is stored in a Mylar sheet portion passage hole provided in the support member when the opening / closing body is in the closed state, so that the device can be stored compactly. This prevents grease from adhering to documents, etc., prevents the mounting member from taking up a large amount of space, and places no restrictions on the mounting shape or torque generating mechanism.

[0016] In the opening / closing support device of the present invention, the cover piece is exposed when the opening / closing body is in the open state, so the grease applied to the slider and the cam part can be covered and hidden. Also, the cover piece is stored in a storage recess provided in the support member when the opening / closing body is in the closed state, so it can be stored compactly. This makes it possible to prevent grease from adhering to documents, etc., to prevent the mounting member from taking up a large amount of space, and to place no restrictions on the mounting shape or torque generating mechanism.

[0017] Since the office equipment of the present invention is configured to include the opening / closing support device of the present invention, it is possible to prevent grease from adhering to documents, etc., it is possible to reduce the space required for the mounting members, and there are no restrictions on the mounting shape or torque generating mechanism. [Brief description of the drawings]

[0018] [Figure 1]1 is a perspective view showing an example of an office machine using an opening / closing support device of the present invention; [Diagram 2] 1 is a perspective view showing an opening / closing support device according to a first embodiment of the present invention. [Diagram 3] 1 is an exploded perspective view showing an opening / closing support device according to a first embodiment of the present invention. [Figure 4] 1A and 1B are diagrams showing a mounting member side plate of an opening / closing support device according to a first embodiment of the present invention, in which (a) is a perspective view and (b) is a bottom view. [Diagram 5] 1A and 1B are diagrams showing a support member side plate of the opening and closing support device according to the first embodiment of the present invention, in which (a) is a perspective view and (b) is a bottom view. [Figure 6] 1A and 1B are diagrams showing a mounting member of an opening / closing support device according to a first embodiment of the present invention, in which (a) is a plan view and (b) is a front view. [Figure 7] 1A to 1C are diagrams showing a support member of an opening / closing support device according to a first embodiment of the present invention, in which (a) is a perspective view, (b) is a front view, and (c) is a bottom view. [Figure 8] 1A and 1B are diagrams showing the relationship between a mounting member, a mounting member side plate, and a support member side plate of the opening and closing support device according to the first embodiment of the present invention, in which (a) is a partial plan view and (b) is a partial front view. [Figure 9] FIG. 1 is a cross-sectional view showing the relationship between an opening / closing support device, a device main body, and an opening / closing body according to a first embodiment of the present invention, and shows a closed state. [Figure 10] FIG. 1 is a cross-sectional view showing the relationship between an opening / closing support device, a device main body, and an opening / closing body according to a first embodiment of the present invention, and shows an open state. [Figure 11] FIG. 4 is a perspective view showing an opening / closing support device according to a second embodiment of the present invention. [Figure 12] FIG. 6 is an exploded perspective view showing an opening / closing support device according to a second embodiment of the present invention. [Figure 13] 10A, 10B, and 10C are diagrams showing a dirt prevention mechanism consisting of an attachment part and a Mylar sheet part of an opening / closing support device according to a second embodiment of the present invention, in which (a) is a perspective view, (b) is a right side view, and (c) is a front view. [Figure 14] FIG. 11 is a cross-sectional view showing the relationship between an opening / closing support device, a device main body, and an opening / closing body according to a second embodiment of the present invention, and shows a closed state. [Figure 15] FIG. 11 is a cross-sectional view showing the relationship between an opening / closing support device, a device main body, and an opening / closing body according to a second embodiment of the present invention, and shows the open state. [Figure 16] FIG. 11 is a perspective view showing an opening / closing support device according to a third embodiment of the present invention. [Figure 17] FIG. 11 is an exploded perspective view showing an opening / closing support device according to a third embodiment of the present invention. [Figure 18] 10A, 10B, and 10C are diagrams showing the relationship between a slider, a covering piece, and a recessed portion of an opening / closing support device according to a third embodiment of the present invention, in which (a) is a perspective view, (b) is a front view, and (c) is a plan view. [Figure 19] FIG. 11 is a cross-sectional view showing the relationship between an opening / closing support device, a device main body, and an opening / closing body according to a third embodiment of the present invention, and shows a closed state. [Figure 20] FIG. 11 is a cross-sectional view showing the relationship between an opening / closing support device, a device main body, and an opening / closing body according to a third embodiment of the present invention, and shows the open state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An opening / closing support device according to a preferred embodiment of the present invention and an office machine equipped with this opening / closing support device will be described below with reference to the drawings. In the following description, the front-rear, left-right, and up-down directions shown in the Cartesian coordinate system in FIG. 1 will be referred to as appropriate. In the present invention, the office equipment includes copying machines such as copying machines and multifunction machines, printing machines, facsimiles, scanners, etc., but is not limited to these.

[0020] (Embodiment 1) 1, a copying machine, which is an example of office equipment, is indicated by the reference numeral 1. Other examples of office equipment include multifunction machines, printers, facsimiles, scanners, etc. The office equipment 1 has a substantially cubic device main body 2, a contact glass 4 on an upper surface 2a of the device main body 2, an operation unit 5 on the lower right of the upper surface 2a, and an opening / closing body (original pressing plate) 3 that opens and closes the upper surface 2a of the device main body 2. The opening / closing body 3 is rotatably connected to the device main body 2 by a hinge (opening / closing support device) 10. The opening / closing body 3 is attached to the device main body 2 by the opening / closing support device 10 so as to be openable and closable. The opening / closing body (original pressing plate) 3 is available in two types: one with an automatic original feeder and one that is lightweight and does not have one. In this embodiment, the one with an automatic original feeder is shown. In this type of device with an automatic original feeder, the left side is heavier, so the opening / closing support device on the left side and the opening / closing support device on the right side usually have different configurations. In this embodiment, the one designated by the reference numeral 10, which is attached to the heavier side on the left side, will be explained. Explanation of the opening / closing support device designated by the reference numeral 10A will be omitted. 1, the opening / closing body 3 is in an open state. The open state refers to a state in which the lower surface 3a of the opening / closing body 3 is separated from the upper surface 2a of the device body 2, and the closed state refers to a state in which the lower surface 3a of the opening / closing body 3 is in contact with the upper surface 2a of the device body 2.

[0021] As shown in Fig. 2, the opening / closing support device 10 of the first embodiment of the present invention has a mounting member 11, a support member 12, a hinge shaft 15, a mounting member side plate 17, and a support member side plate 18. Also, as shown in Fig. 3, the opening / closing support device 10 has a slider 13, a reinforcing plate 14, and an elastic member (coil spring) 16. As shown in FIGS. 2 and 3, the hinge shaft 15 is inserted into the attachment member-side shaft mounting holes 11e, 11e, the support member-side shaft mounting hole 12c, and the reinforcing plate-side shaft mounting holes 14c, 14c. The attachment member side plate 17 and the support member side plate 18 form a dirt prevention mechanism (cover portion) 19. A mounting protrusion 11h is provided on the mounting member 11, and the mounting member 11 is attached by placing the mounting protrusion 11h on the upper surface of the device body 2. As a result, a separation space 2x is formed between the device body 2 and the support member 12 when the opening / closing body is in the closed state.

[0022] "Stain prevention mechanism" As shown in FIGS. 2 and 3, the dirt prevention mechanism 19 is composed of a mounting member side plate 17 and a support member side plate 18 each having a generally rectangular shape in a plan view. As shown in Figure 4, the mounting member side plate 17 has a base portion 17c that is approximately rectangular in plan view, a pair of one-side shaft mounting portions 17a, 17a that are attached to the mounting member 11 so as to be rotatable around one side as an axis, and a pair of other-side shaft mounting portions 17b, 17b that are attached so as to be rotatable around the other side as an axis. As shown in FIG. 5, the support member side plate 18 has a base portion 18c having a generally rectangular shape in a plan view, a pair of one-side shaft mounting portions 18b, 18b that are attached to the support member 12 so as to be rotatable about one side as an axis, and a pair of other-side shaft mounting portions 18a, 18a that are attached so as to be rotatable about the other side as an axis. As shown in FIG. 8, a pair of shaft attachment portions 17b, 17b on the other side of the attachment member side plate 17 are rotatably connected to attachment member side plate connection holes 11f, 11f of the attachment member 11. The mounting member side plate 17 and the support member side plate 18 have shaft mounting portions 18a, 18a fitted into shaft mounting portions 17a, 17a on one side and are connected to each other rotatably about the other side as an axis. 9 and 10, a pair of one-side shaft attachment portions 18b, 18b of the support member side plate 18 are rotatably connected to a support member side plate connection hole 12f provided in the protruding portion 12g of the support member 12. As a result, as shown in Figure 10, when the opening / closing body 3 is in the open state, one side of the mounting member side plate 17 and one side of the support member side plate 18 are spread apart from each other, and the grease 25 applied to the slider 13 and cam portion 12j, which is visible through the gap between the mounting member 11 and the support member 12, can be covered and hidden. 9, a space 2x is provided between the device main body 2 and the support member 12. Therefore, when the opening / closing body 3 is in the closed state, one side of the mounting member side plate 17 and one side of the support member side plate 18 come into contact with each other in a contracted state (a folded state in which the other side of the support member side plate 18 comes into contact with one side of the mounting member side plate 17), and the device can be stored compactly in the storage space 26 formed including the space 2x.

[0023] "Mounting parts" As shown in Figs. 6, 9 and 10, the mounting member 11 is formed in a generally rectangular shape in plan view, in the shape of a cylinder with a bottom, and has an accommodation space 11g inside the cylinder. The mounting member 11 has a mounting portion 11a that is removably attached to an insertion mounting hole 2c provided in the device body 2. The mounting member 11 also has a pair of side plates 11b, 11b that rise upward from both upper side ends of the mounting portion 11a, and a rear plate 11c that extends upward from one end (rear end) of the mounting portion 11a. The pair of side plates 11b, 11b of the mounting member 11 are provided with mounting member-side shaft mounting holes 11e, 11e, and a hinge shaft 15 is attached to the mounting member 11. The mounting member 11 supports the support member 12 via the hinge shaft 15 so that the support member 12 is rotatable. Plate connecting holes 11f, 11f are provided at the front of the lower ends of the side plates 11b, 11b.

[0024] "Containment space" As shown in FIG. 3, in the accommodation space 11g of the mounting member 11, a reinforcing plate 14, an elastic member 16 for biasing the opening / closing body 3 in the opening direction, and a slider 13 are inserted and arranged from the bottom 11d side.

[0025] "Reinforcement plate" 3, the reinforcing plate 14 is formed by bending a generally band-shaped metal piece into a U-shape. It has side sections 14b, 14b rising vertically from both sides of the bottom section 14a, and a pair of reinforcing-plate-side shaft attachment holes 14c, 14c are provided at the tip ends of the side sections 14b, 14b.

[0026] "slider" As shown in FIG. 3, the slider 13 is slidably accommodated within the accommodation space 11g of the mounting member 11. As shown in FIGS. 9 and 10, the slider 13 has a bottom 13a, an opening 13b, and an insertion space 13c, and accommodates one end 16a of an elastic member (coil spring) 16 on the bottom 13a side of the insertion space 13c.

[0027] "Elastic material (coil spring)" As shown in FIG. 3, the elastic member (coil spring) 16 is housed in the housing space 11g of the mounting member 11. 9 and 10, one end 16a of the elastic member (coil spring) 16 is fitted into the bottom 13a side of the insertion space 13c of the slider 13, and the other end 16b of the elastic member (coil spring) 16 is fitted into the bottom 11d side of the accommodation space 11g of the mounting member 11. In this way, the elastic member (coil spring) 16 is elastically installed between the slider 13 and the reinforcing plate 14.

[0028] "Support member" 7, the support member 12 is composed of a base portion 12a having a rectangular shape in a plan view, and a connecting portion 12b that protrudes from one end of the base portion 12a and stands upward. A support member-side shaft mounting hole 12c is provided in the connecting portion 12b, and the supporting member 12 is mounted to a pair of side plates 11b, 11b of the mounting member 11 via a hinge shaft 15. In this way, the supporting member 12 is supported by the mounting member 11 so as to be rotatable. As shown in FIG. 7, holes 12d, 12d are provided in the base plate portion 12a, and as shown in FIGS. As shown in Fig. 7, the base plate portion 12a is provided with a downwardly protruding protrusion 12g, and the protrusion 12g is provided with a support member side plate connecting hole 12f. As shown in Figs. 9 and 10, a support member side plate 18 is attached to the support member side plate connecting hole 12f.

[0029] (Embodiment 2) FIG. 11 shows an opening / closing support device 30 according to a second embodiment of the present invention. The configuration of the second embodiment of the present invention is similar to that of the first embodiment, except that an opening / closing support device 30 of the second embodiment of the present invention is used instead of the opening / closing support device 10 of the first embodiment of the present invention. That is, in FIG. 1, an opening / closing support device 30 is used in place of the opening / closing support device 10, and the opening / closing body 3 is rotatably connected to the device main body 2 by the opening / closing support device 30. The members and configurations denoted by the same reference numerals as those in the first embodiment are the same as those in the first embodiment, and therefore the description thereof will be omitted.

[0030] As shown in Fig. 11, an opening / closing support device 30 according to the second embodiment of the present invention has a mounting member 11, a support member 12, a hinge shaft 15, a Mylar sheet portion 31, and a mounting portion 32. Also, as shown in Fig. 12, the opening / closing support device 30 has a slider 13, a reinforcing plate 14, and an elastic member (coil spring) 16. As shown in FIGS. 2 and 3, the hinge shaft 15 is inserted into the attachment member-side shaft mounting holes 11e, 11e, the support member-side shaft mounting hole 12c, and the reinforcing plate-side shaft mounting holes 14c, 14c. As shown in FIG. 11, the support member 12 is provided with a Mylar sheet portion passing hole 12h, and is arranged so that the Mylar sheet portion 31 passes through it.

[0031] "Stain prevention mechanism" As shown in FIGS. 11 and 12, the dirt prevention mechanism 33 is composed of a Mylar sheet portion 31. 12, the mylar sheet portion 31 is attached to the attachment portion 32, and the attachment portion 32 has an attachment hole 32a that allows attachment to the attachment portion 11a of the attachment member 11. The mylar sheet portion 31 is a strip-shaped portion having one end rising from one side of the attachment portion 32 and the other end bent toward the other side of the attachment portion 32. In other words, the stain prevention mechanism 33 is composed of the strip-shaped mylar sheet portion 31 having one end rising from one side of the attachment portion 32 and the other end bent toward the other side of the attachment portion 32. As shown in FIGS. 14 and 15, the support member 12 is provided with a Mylar sheet portion passing hole 12h, and is arranged so that the Mylar sheet portion 31 can pass through. As shown in Figure 15, when the opening / closing body 3 is in the open state, the Mylar sheet portion 31 is in an exposed and spread state, and can cover and conceal the grease 25 applied to the slider 13 and the cam portion 12j that is visible through the gap between the mounting member 11 and the support member 12. 14, a space 2x is provided between the device body 2 and the support member 12. The Mylar sheet portion passing hole 12h is provided in a vertical direction on one surface of the base plate portion 12a of the support member 12. The Mylar sheet portion 31 is made thinner than the diameter of the Mylar sheet portion passing hole 12h, and is vertically arranged so as not to contact the inner surface of the Mylar sheet portion passing hole 12h when in the closed state. Therefore, when the opening / closing body 3 is in the closed state, the Mylar sheet portion 31 is vertically arranged so as not to contact the inner surface of the Mylar sheet portion passing hole 12h, and can be compactly stored in the storage space 34 formed by the space 2x and the Mylar sheet portion passing hole 12h.

[0032] (Embodiment 3) FIG. 16 shows an opening / closing support device 40 according to a third embodiment of the present invention. The configuration of the third embodiment of the present invention is similar to that of the first embodiment, except that an opening / closing support device 40 of the third embodiment of the present invention is used instead of the opening / closing support device 10 of the first embodiment of the present invention. That is, in FIG. 1, an opening / closing support device 40 is used in place of the opening / closing support device 10, and the opening / closing body 3 is rotatably connected to the device main body 2 by the opening / closing support device 40. The members and configurations denoted by the same reference numerals as those in the first embodiment are the same as those in the first embodiment, and therefore the description thereof will be omitted.

[0033] As shown in Fig. 16, an opening / closing support device 40 according to the third embodiment of the present invention has a mounting member 11, a support member 12, and a hinge shaft 15. Also, as shown in Fig. 17, the opening / closing support device 40 has a slider 13, a reinforcing plate 14, and an elastic member (coil spring) 16. Furthermore, the slider 13 has a recess 41 formed from one end side to the other end side on the front surface of the slider 13, a cover piece portion 42 protruding toward the front surface from one end side of the recess 41, and a storage recess 12i provided on the underside of the base portion 12a of the support member 12. As shown in FIGS. 16 and 17, the hinge shaft 15 is inserted into the attachment member side shaft mounting holes 11e, 11e, the support member side shaft mounting hole 12c, and the reinforcing plate side shaft mounting holes 14c, 14c.

[0034] "Stain prevention mechanism" 16 to 18, the dirt prevention mechanism 43 is composed of a recess 41 formed from one end side to the other end side of the front surface of the slider 13, and a cover piece 42 protruding from the same end side toward the front surface and having a base end recessed by the recess 41. The cover piece 42 is generally L-shaped when viewed from the side. As shown in Figure 20, when the opening / closing body 3 is in the open state, the cover piece 42 is exposed, and the grease 25 applied to the slider 13 and the cam portion 12j, which is visible through the gap between the mounting member 11 and the support member 12, can be covered and hidden. Furthermore, as shown in FIG. 19, a separation space 2x is provided between the device main body 2 and the support member 12, the base end of the cover piece portion 42 is positioned toward the back by the recess 41, and a storage recess 12i is provided on the underside of the base portion 12a of the support member 12. Therefore, when the opening / closing body 3 is in the closed state, the cover piece portion 42 can be stored in the storage recess 12i and can be stored compactly in the storage space 44 formed by the storage recess 12i and the separation space 2x. [Industrial Applicability]

[0035] The opening / closing support device of the present invention is expected to be useful as an opening / closing support device for office equipment that has a glass section for reading documents, and is expected to be useful as an opening / closing support device that can compactly store a dirt prevention mechanism that can prevent grease from adhering to documents, etc., in a storage space including a separation space, and does not restrict the mounting shape or torque generation mechanism. [Explanation of symbols]

[0036] 1 Office equipment 2. Device body 3 Opening and closing body 10 Opening and closing support device 10A Opening and closing support device 11 Mounting material 11a Mounting part 11d bottom 12 Support member 12h Mylar sheet passage hole 12i Storage recess 12j Cam section 13. Slider 13a bottom 15 Hinge shaft 16 Elastic member (coil spring) 16b Other end side 17 Mounting member side plate 18 Support member side plate 19 Anti-soiling mechanism 30 Opening and closing support device 31 Mylar Sheet Section 32 Mounting part 33 Anti-stain mechanism 40 Opening and closing support device 42 Cover piece 43 Anti-stain mechanism

Claims

1. An opening / closing support device that connects an opening / closing body to an apparatus main body so as to be openable and closable, a support member for supporting the opening / closing body rotatably attached to the upper part of the mounting member via a hinge shaft so as to be openable and closable; a slider slidably housed inside the mounting member; an elastic member elastically provided between the slider and the bottom of the mounting member; and a cam portion provided on the support member and pressed against the top of the slider, the mechanism comprising grease applied to the slider and the cam portion preventing an original document placed or removed for copying from coming into contact with the device body and becoming dirty, An opening / closing support device characterized in that the dirt prevention mechanism is provided between the mounting member and the support member and is configured to cover the grease adhesion surfaces on both the slider side and the cam portion side when the opening / closing body is in the closed state and the open state.

2. The dirt prevention mechanism is composed of two plates each having a rectangular shape in a plan view, a mounting member side plate attached to the mounting member so as to be rotatable about one side as an axis, and a support member side plate attached to the support member so as to be rotatable about one side as an axis, the mounting member side plate and the support member side plate being connected to each other so as to be rotatable about the other side as an axis, The opening / closing support device described in claim 1, characterized in that when the opening / closing body is in an open state, the two plates, which are rectangular in plan view, are in a spread state in which one side of the mounting member side plate and one side of the support member side plate are separated from each other, covering and concealing grease applied to the slider and the cam portion.

3. the dirt prevention mechanism is made of a strip-shaped Mylar sheet portion having one end rising from one side of the attachment portion and the other end bent toward the other side of the attachment portion, The opening / closing support device described in claim 1, characterized in that when the opening / closing body is in an open state, the Mylar sheet portion is exposed, covering and concealing the grease applied to the slider and the cam portion, and when the opening / closing body is in a closed state, the Mylar sheet portion is stored in a Mylar sheet portion passing hole provided in the support member.

4. The dirt prevention mechanism comprises a cover piece formed on a front surface of the slider, The opening / closing support device described in claim 1, characterized in that when the opening / closing body is in an open state, the covering piece portion is exposed, covering and concealing the grease attached to the slider and the cam portion, and when the opening / closing body is in a closed state, the covering piece portion is stored in a storage recess provided in the support member.

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

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