JP2024000920A - Opening/closing support device, and business machine - Google Patents

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

The present invention relates to an opening/closing support device and office equipment. In particular, the present invention relates to an opening/closing support device equipped with a compact dirt prevention mechanism and office equipment equipped with the same.

2. Description of the Related Art Conventionally, there is an original pressing plate that is placed over a contact glass of a copying machine, a scanner, a printing machine, etc., and presses an original placed on the contact glass. This document pressure bonding plate is supported by an opening/closing support device fixed to the main body of the apparatus. This opening/closing support device has a kind of hinge mechanism, and has a structure in which a document pressure plate is rotatably supported around the hinge axis. When the document pressure plate is closed, the document is pressed onto the top surface of the main body of the device. When the plate is pressed and opened upward, the contact glass is exposed, and a document can be placed on and removed from the contact glass. Therefore, lubricating grease applied between the pressure contact surface between the slider, which is slidably provided on the mounting member side of the hinge mechanism, and the cam portion provided on the supporting member side, or grease applied to the coil spring, etc. Since there is a problem that the document placed on the glass comes in contact with the edge and gets dirty, a stain prevention mechanism is provided. As an opening/closing support device equipped with this stain prevention mechanism, the one described in Patent Document 1 below is known.

In Patent Document 1 listed below, a shielding part (cover part) is provided to cover the contact part between the slide member and the cam part, and when the rotating member rotates in a direction approaching the case member, the cover part is closed to the case member. Even when the hinge is housed in a member, the cover part can be separated from the inner circumferential surface of the case member, so that when installed in office equipment equipped with a document reading part, the hinge can prevent documents from being soiled. is described (see [0012]).

This hinge has a problem in that the cover portion is large and requires a large space in the case member. Furthermore, there was a problem in that ``the cover section takes up a large space in the case member'', which ``restricts the mounting shape and torque generation mechanism''.
Further, since the shielding part is provided on the front side of the slider member and the shielding part moves up and down in accordance with the vertical movement of the slider member, there are cases where sufficient shielding cannot be achieved depending on the angle.

Therefore, the inventor studied various structures of the hinge (opening/closing support device).
As a result, by making the dirt prevention mechanism (cover part) consist of two or more sheets and having a structure that can be folded and stored compactly between the main body of the device and the support member (cam bracket) when closed, or The stain prevention mechanism (cover part) is made of a Mylar sheet part, and the Mylar sheet part can be compactly stored in the Mylar sheet passage hole when closed, or the dirt prevention mechanism (cover part) is made of a Mylar sheet part. consists of a cover piece formed in a concave portion formed on the front surface of the slider member, and is configured so that when closed, the cover piece can be compactly stored in a storage recess provided in the support member. We decided to file this application after discovering that the dirt prevention mechanism (cover part) can be made to not take up a large space in the member (case member), and there are no restrictions on the mounting shape or torque generation mechanism.

Patent No. 6982843

It is a dirt prevention mechanism (cover part) that prevents grease from adhering to documents, etc., and it does not take up a large space on the mounting member (case member), and there are no restrictions on the mounting shape or torque generation mechanism. It is an object of the present invention to provide a hinge (opening/closing support device) equipped with a dirt prevention mechanism (cover part) that can be used as a cover.

The present invention has the following configuration.
In order to achieve the above object, the opening/closing support device according to the present invention is an opening/closing support device that connects an opening/closing body to the device main body so as to be openable and closable, and has a substantially cylindrical shape with a bottom and is attached to the device main body. a mounting member, a support member rotatably attached to the upper part of the mounting member via a hinge shaft and supporting the opening/closing body in an openable/closable manner, a slider slidably housed inside the mounting member; an elastic member provided elastically between the slider and the bottom of the mounting member; and a cam portion provided on the support member that presses against the top of the slider, the cam portion being attached to the slider and the cam portion. A stain prevention mechanism is provided to prevent a document to be placed and removed for copying from contacting and staining the main body of the apparatus with grease, and the stain prevention mechanism is provided between the mounting member and the support member. The opening/closing body is provided in the opening/closing body and is configured to cover both the grease adhesion surfaces on the slider side and the cam portion side in the closed state and the open state of the opening/closing body.

In the opening/closing support device according to the present invention, the dirt prevention mechanism is composed of two plates having a rectangular shape in plan view, a mounting member side plate rotatably attached to the mounting member about one side, and a mounting member side plate rotatably attached to the mounting member about one side. The mounting member side plate and the support member side plate are rotatably connected to each other with the other side as an axis, and the two The plate, which is rectangular in plan view, assumes an expanded state in which one side of the mounting member-side plate and one side of the support member-side plate are spaced apart from each other when the opening/closing body is in the open state, and the slider and the cam portion It is preferable to cover up the grease attached to the surface.

In the opening/closing support device according to the present invention, the stain prevention mechanism includes a band-shaped mylar sheet portion with one end rising from one side of the mounting portion and the other end bent toward the other side of the mounting portion, and the mylar sheet When the opening/closing body is in the open state, the part is exposed and covers the grease attached to the slider and the cam part, and when the opening/closing body is in the closed state, the part is exposed to the support member. It is preferable that the Mylar sheet portion is accommodated in the provided passage hole.

In the opening/closing support device according to the present invention, the dirt prevention mechanism includes a cover piece portion formed in a recess formed in the front surface of the slider, and the cover piece portion is configured such that when the opening/closing body is in an open state, Preferably, the opening/closing body is in an exposed state to cover up the grease attached to the slider and the cam part, and is housed in a storage recess provided in the support member when the opening/closing body is in the closed state.

Office equipment according to the present invention is characterized in that it uses any of the opening/closing support devices described above.

In the opening/closing support device of the present invention, the stain prevention mechanism is provided between the mounting member and the support member, and when the opening/closing body is in a closed state (closed state) and an open state (open state), the dirt prevention mechanism is provided on the slider side. Since it is configured to cover both the grease adhering surfaces on the side of the slider and the cam part, even when the opening/closing body is in the open state, the grease adhering to the slider and the cam part can be covered.

In the opening/closing support device of the present invention, when the two plates having a rectangular shape in plan view are in an open state of the opening/closing body, one side of the mounting member side plate and one side of the support member side plate are spaced apart from each other. Since it is configured to take a wide spread state, even in the open state, the grease attached to the slider and the cam portion can be covered up. Also, when closed, it can be folded and stored compactly. Therefore, it is possible to prevent grease from adhering to the original, etc., the mounting member does not take up a large space, and there are no restrictions on the mounting shape and torque generation mechanism.

In the opening/closing support device of the present invention, the mylar sheet section is configured to take an exposed state when the opening/closing body is opened, so that it covers the grease attached to the slider and the cam section even in the open state. be able to. Further, since the Mylar sheet portion is accommodated in the Mylar sheet portion passage hole provided in the support member when the opening/closing body is in the closed state, it can be stored compactly. Therefore, it is possible to prevent grease from adhering to the original, etc., the mounting member does not take up a large space, and there are no restrictions on the mounting shape and torque generation mechanism.

In the opening/closing support device of the present invention, since the cover piece is configured to be exposed when the opening/closing body is opened, it is possible to cover up the grease attached to the slider and the cam portion. Further, since the cover piece is configured to be stored in a storage recess provided in the support member when the opening/closing body is in the closed state, it can be stored compactly. Therefore, it is possible to prevent grease from adhering to the original, etc., the mounting member does not take up a large space, and there are no restrictions on the mounting shape and torque generation mechanism.

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., the mounting member does not take up a large space, and there are no restrictions on the mounting shape or torque generation mechanism. You can avoid it.

FIG. 1 is a perspective view showing an example of office equipment using the opening/closing support device of the present invention. 1 is a perspective view showing an opening/closing support device according to Embodiment 1 of the present invention. 1 is a perspective exploded view showing an opening/closing support device according to Embodiment 1 of the present invention. FIG. It is a figure which shows the attachment member side plate of the opening/closing support apparatus of Embodiment 1 of this invention, Comprising: (a) It is a perspective view, (b) It is a bottom view. It is a figure which shows the support member side plate of the opening/closing support apparatus of Embodiment 1 of this invention, Comprising: (a) It is a perspective view, (b) It is a bottom view. It is a figure which shows the attachment member of the opening-and-closing support apparatus of Embodiment 1 of this invention, Comprising: (a) A top view and (b) A front view. It is a figure showing the support member of the opening-and-closing support device of Embodiment 1 of the present invention, and is (a) a perspective view, (b) a front view, and (c) a bottom view. FIG. 3 is a diagram showing the relationship between the mounting member, the mounting member side plate, and the support member side plate of the opening/closing support device according to Embodiment 1 of the present invention, and is (a) a partial plan view and (b) a partial front view. FIG. 2 is a cross-sectional view showing the relationship between the opening/closing support device, the device main body, and the opening/closing body according to Embodiment 1 of the present invention, and is a diagram showing a closed state. FIG. 2 is a cross-sectional view showing the relationship between the opening/closing support device, the device main body, and the opening/closing body according to Embodiment 1 of the present invention, and is a diagram showing an open state. It is a perspective view showing the opening-and-closing support device of Embodiment 2 of the present invention. It is a perspective exploded view which shows the opening-and-closing support device of Embodiment 2 of this invention. It is a figure which shows the dirt prevention mechanism which consists of the attachment part and mylar sheet part of the opening/closing support device of Embodiment 2 of this invention, Comprising: (a) A perspective view, (b) A right view, (c) A front view. FIG. 7 is a cross-sectional view showing the relationship between the opening/closing support device, the device main body, and the opening/closing body according to Embodiment 2 of the present invention, and is a diagram showing the closed state. FIG. 7 is a cross-sectional view showing the relationship between the opening/closing support device, the device main body, and the opening/closing body according to Embodiment 2 of the present invention, and is a diagram showing an open state. It is a perspective view showing the opening-and-closing support device of Embodiment 3 of the present invention. It is a perspective exploded view which shows the opening-and-closing support device of Embodiment 3 of this invention. It is a figure which shows the relationship between the slider, the cover piece part, and a recessed part of the opening/closing support device of Embodiment 3 of this invention, Comprising: (a) A perspective view, (b) A front view, (c) A top view. FIG. 7 is a cross-sectional view showing the relationship between the opening/closing support device, the device main body, and the opening/closing body according to Embodiment 3 of the present invention, and is a diagram showing the closed state. FIG. 7 is a cross-sectional view showing the relationship between the opening/closing support device, the device main body, and the opening/closing body according to Embodiment 3 of the present invention, and is a diagram showing an open state.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An opening/closing support device according to a preferred embodiment of the present invention and office equipment equipped with this opening/closing support device will be described below with reference to the drawings.
In the following description, reference will be made to the front-rear, left-right, and up-down directions shown in the orthogonal coordinate system shown in FIG. 1 as appropriate.
Note that, in the present invention, office equipment includes, but is not limited to, copying machines such as copying machines and multifunction machines, printing machines, facsimile machines, scanners, and the like.

(Embodiment 1)
In FIG. 1, the reference numeral 1 indicates a copying machine which is an example of office equipment. Other office equipment that can be considered include multifunction printers, printing machines, fax machines, and scanners.
The office equipment 1 includes an approximately cubic-shaped device main body 2, a contact glass 4 on the top surface 2a of the device main body 2, an operating section 5 at the lower right of the top surface 2a, and an opening/closing body ( (original pressure bonding plate) 3. 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 main body 2 of the apparatus by an opening/closing support device 10 so as to be openable and closable.
The opening/closing body (original pressure bonding plate) 3 is available in two types: one with an automatic document feeder and a lightweight one without. In this embodiment, the one with an automatic document feeder is shown. Since the left side of a device with a device is heavier, 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, a device designated by the reference numeral 10 attached to the left heavy side will be described. Explanation of the opening/closing support device designated by the reference numeral 10A will be omitted.
In FIG. 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 and closing body 3 is separated from the upper surface 2a of the device main body 2, and the closed state refers to a state in which the lower surface 3a of the opening and closing body 3 is separated from the upper surface 2a of the device main body 2. This refers to the state in which the surfaces 3a are in contact.

As shown in FIG. 2, the opening/closing support device 10 according to the first embodiment of the present invention includes 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. are doing. Further, as shown in FIG. 3, it includes 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 mounting member side shaft attachment holes 11e, 11e, the support member side shaft attachment hole 12c, and the reinforcing plate side shaft attachment holes 14c, 14c.
A dirt prevention mechanism (cover part) 19 is formed by the mounting member side plate 17 and the support member side plate 18.
The mounting member 11 is provided with a mounting protrusion 11h, and the mounting member 11 is mounted by placing the mounting protrusion 11h on the upper surface of the device main body 2. Thereby, a separation space 2x is formed between the device main body 2 and the support member 12 when the opening/closing body is in the closed state.

"Dirt 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, which are generally rectangular in plan view.
As shown in FIG. 4, the mounting member side plate 17 includes a substrate portion 17c having a substantially rectangular shape in plan view, and a pair of one side shaft mounting portions 17a, 17a which are rotatably attached to the mounting member 11 about one side. , it has a pair of other side shaft attachment parts 17b, 17b which are rotatably attached about the other side.
Further, as shown in FIG. 5, the support member side plate 18 includes a substrate portion 18c that is substantially rectangular in plan view, a pair of one side shaft attachment portions 18b that are rotatably attached to the support member 12 about one side; 18b, and a pair of other side shaft attachment parts 18a, 18a that are rotatably attached around the other side.As shown in FIG. The portions 17b, 17b are rotatably connected to the mounting member side plate connection holes 11f, 11f of the mounting member 11.
Further, the mounting member side plate 17 and the support member side plate 18 are connected to each other so that the shaft mounting portions 17a, 17a on one side are fitted with the shaft mounting portions 18a, 18a on the other side, and are rotatable with respect to each other around the other side. Ru.
In addition, as shown in FIGS. 9 and 10, the pair of one-side shaft attachment portions 18b, 18b of the support member side plate 18 can rotate into the support member side plate connection hole 12f provided in the convex portion 12g of the support member 12. connected to.
As a result, as shown in FIG. 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 mounting member 11 and The grease 25 attached to the slider 13 and the cam part 12j, which is seen through the gap between the support members 12, can be covered up.
Further, as shown in FIG. 9, a separation 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, it is in a reduced state where one side of the mounting member side plate 17 and one side of the support member side plate 18 are in contact with each other (one side of the support member side plate 18 is on one side of the mounting member side plate 17). It can be compactly stored in the storage space 26 formed including the separation space 2x.

"Mounting parts"
As shown in FIGS. 6, 9, and 10, the mounting member 11 is formed in a substantially rectangular shape in plan view and a cylindrical shape with a bottom, and has a housing space 11g in the cylinder.
The attachment member 11 has an attachment portion 11a that is removably attached to an insertion attachment hole 2c provided in the main body 2 of the device. The mounting member 11 also includes a pair of side plates 11b, 11b that stand upward from both ends of the upper portion of the mounting portion 11a, and a rear plate 11c that extends upward from one end (rear end portion) 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, into which the hinge shaft 15 is mounted. The mounting member 11 rotatably supports the support member 12 via the hinge shaft 15.
Plate connecting holes 11f, 11f are provided in front of the lower ends of the side plates 11b, 11b.

"Accommodation space"
As shown in FIG. 3, a reinforcing plate 14, an elastic member 16 that biases the opening/closing body 3 in the opening direction, and a slider 13 are inserted into the accommodation space 11g of the mounting member 11 from the bottom 11d side. .

"Reinforcement plate"
As shown in FIG. 3, the reinforcing plate 14 is formed by bending a substantially band-shaped metal piece into a U-shape. It has side parts 14b, 14b rising vertically from both sides of the bottom part 14a, and a pair of reinforcing plate-side shaft attachment holes 14c, 14c are provided at the tips of the side parts 14b, 14b.

"slider"
As shown in FIG. 3, the slider 13 is slidably accommodated in 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 one end 16a of the elastic member (coil spring) 16 is accommodated on the bottom 13a side of the insertion space 13c. .

"Elastic member (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.
As shown in FIGS. 9 and 10, one end 16a of the elastic member (coil spring) 16 is fitted into the bottom 13a 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 13a of the insertion space 13c of the slider 13. , is fitted to the bottom 11d side of the housing space 11g of the mounting member 11. As a result, an elastic member (coil spring) 16 is elastically installed between the slider 13 and the reinforcing plate 14.

"Supporting member"
As shown in FIG. 7, the support member 12 includes a substrate portion 12a that is rectangular in plan view, and a connecting portion 12b that protrudes from one end of the substrate portion 12a and stands upward. The connecting portion 12b is provided with a support member side shaft attachment hole 12c, and is attached to the pair of side plates 11b, 11b of the attachment member 11 via the hinge shaft 15. Thereby, the support member 12 is rotatably supported by the attachment member 11.
As shown in FIG. 7, the substrate portion 12a is provided with holes 12d, 12d, and is attached to the opening/closing body 3 with screws 20, as shown in FIGS. 9 and 10.
As shown in FIG. 7, the base plate portion 12a is provided with a downwardly protruding convex portion 12g, and the convex portion 12g is provided with a supporting member side plate connection hole 12f. As shown in FIGS. 9 and 10, the support member side plate 18 is attached to the support member side plate connection hole 12f.

(Embodiment 2)
FIG. 11 shows an opening/closing support device 30 according to a second embodiment of the present invention.
The configuration of Embodiment 2 of the present invention is the same as that of Embodiment 1 except that the opening/closing support device 30 of Embodiment 2 of the present invention is used instead of the opening/closing support device 10 of Embodiment 1 of the present invention. There is.
That is, in FIG. 1, an opening/closing support device 30 is used instead 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.
Members and configurations indicated by the same reference numerals as those in the first embodiment are the same as those described in the first embodiment, and therefore their descriptions will be omitted.

As shown in FIG. 11, the opening/closing support device 30 according to the second embodiment of the present invention includes a mounting member 11, a support member 12, a hinge shaft 15, a mylar sheet portion 31, and a mounting portion 32. . Further, as shown in FIG. 12, it 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 mounting member side shaft attachment holes 11e, 11e, the support member side shaft attachment hole 12c, and the reinforcing plate side shaft attachment holes 14c, 14c.
As shown in FIG. 11, the supporting member 12 is provided with a Mylar sheet passage hole 12h, which is arranged so that the Mylar sheet portion 31 passes therethrough.

"Dirt prevention mechanism"
As shown in FIGS. 11 and 12, the stain prevention mechanism 33 is composed of a Mylar sheet portion 31. As shown in FIGS.
As shown in FIG. 12, the Mylar sheet portion 31 is attached to an attachment portion 32, and the attachment portion 32 has an attachment hole 32a that can be attached to the attachment portion 11a of the attachment member 11. The mylar sheet portion 31 is a band-shaped portion that has one end rising from the mounting portion 32 and one side of the mounting portion 32 and the other end thereof being bent toward the other side of the mounting portion 32 . In other words, the stain prevention mechanism 33 is composed of a band-shaped Mylar sheet portion 31 with one end rising from one side of the mounting portion 32 and the other end bent toward the other side of the mounting portion 32 .
As shown in FIGS. 14 and 15, the supporting member 12 is provided with a Mylar sheet passage hole 12h, through which the Mylar sheet portion 31 is placed.
As shown in FIG. 15, when the opening/closing body 3 is in the open state, the mylar sheet portion 31 is exposed and spread, and the slider 13 is seen through the gap between the mounting member 11 and the support member 12. This allows the grease 25 attached to the cam portion 12j to be hidden.
Further, as shown in FIG. 14, a separation space 2x is provided between the device main body 2 and the support member 12. Further, the mylar sheet portion passage hole 12h is provided in a vertical direction on one surface of the substrate portion 12a of the support member 12. The mylar sheet portion 31 is made thinner than the diameter of the mylar sheet passage hole 12h, and is vertically arranged so as not to contact the inner surface of the mylar sheet passage 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 disposed inside the mylar sheet passage hole 12h without contacting the space 2x and the mylar sheet portion. It can be compactly stored in the storage space 34 formed using the passage hole 12h.

(Embodiment 3)
FIG. 16 shows an opening/closing support device 40 according to a third embodiment of the present invention.
The configuration of Embodiment 3 of the present invention is the same as that of Embodiment 1 except that the opening/closing support device 40 of Embodiment 3 of the present invention is used instead of the opening/closing support device 10 of Embodiment 1 of the present invention. .
That is, in FIG. 1, the opening/closing support device 40 is used instead 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.
Members and configurations indicated by the same reference numerals as those in the first embodiment are the same as those described in the first embodiment, and therefore their descriptions will be omitted.

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

"Dirt prevention mechanism"
As shown in FIGS. 16 to 18, the dirt prevention mechanism 43 has a concave portion 41 formed from one end of the front surface of the slider 13 toward the other end, and a concave portion 41 that protrudes from the same one end toward the front surface. It consists of a cover piece part 42 with the part facing towards the back. The cover piece portion 42 is approximately L-shaped when viewed from the side.
As shown in FIG. 20, when the opening/closing body 3 is in the open state, the cover piece 42 is exposed and attached to the slider 13 and the cam part 12j that can be seen through the gap between the mounting member 11 and the support member 12. The grease 25 can be covered up.
Further, as shown in FIG. 19, a separation space 2x is provided between the device main body 2 and the support member 12, and the proximal end of the cover piece 42 is directed from the back by the recess 41, and the substrate portion 12a of the support member 12 is Since the structure includes the storage recess 12i provided on the lower surface of the housing, the cover piece 42 can be stored in the storage recess 12i when the opening/closing body 3 is in the closed state, and the cover piece 42 can be stored in the storage recess 12i using the storage recess 12i and the space 2x. It can be stored compactly in the storage space 44 formed.

The opening/closing support device of the present invention is expected to be used as an opening/closing support device for office equipment equipped with a glass portion for reading originals, and includes a dirt prevention mechanism that can prevent grease from adhering to originals, etc. It can be stored compactly in a storage space and can be used as an opening/closing support device that does not restrict the mounting shape or torque generation mechanism.

1 Office equipment 2 Apparatus body 3 Opening/closing body 10 Opening/closing support device 10A Opening/closing support device 11 Mounting member 11a Mounting portion 11d Bottom 12 Support member 12h Mylar sheet passage hole 12i Storage recess 12j Cam portion 13 Slider 13a Bottom 15 Hinge shaft 16 Elastic member (coil spring)
16b Other end side 17 Mounting member side plate 18 Supporting member side plate 19 Stain prevention mechanism 30 Opening/closing support device 31 Mylar sheet portion 32 Mounting portion 33 Stain prevention mechanism 40 Opening/closing support device 42 Cover piece portion 43 Stain prevention mechanism

Claims (5)

An opening/closing support device that connects an opening/closing body to the device main body in an openable/closable manner,
a mounting member having a substantially cylindrical shape with a bottom that is mounted on the device main body; a support member rotatably mounted on the upper part of the mounting member via a hinge shaft and supporting the opening/closing body in an openable/closable manner; a slider slidably housed inside the member; an elastic member resiliently provided between the slider and the bottom of the mounting member; and a cam portion provided on the support member that presses against the top of the slider. and is provided with a dirt prevention mechanism that prevents a document to be placed and removed for copying on the main body of the apparatus from coming into contact with it and getting dirty by grease attached to the slider and the cam part,
The dirt prevention mechanism is provided between the mounting member and the support member, and is configured to cover grease adhering surfaces on both the slider side and the cam portion side when the opening/closing body is in a closed state and an open state. An opening/closing support device characterized by: The dirt prevention mechanism consists of two rectangular plates in plan view,
a mounting member side plate that is rotatably attached to the mounting member about one side, and a support member side plate that is rotatably attached to the support member about one side, and the mounting member side plate and the support The member side plates are connected to each other so that they can rotate around the other side,
The two plates, each having a rectangular shape in a plan view, assume a spread state in which one side of the mounting member side plate and one side of the support member side plate are spaced apart from each other when the opening/closing body is in the open state, and the slider The opening/closing support device according to claim 1, wherein the opening/closing support device covers the grease attached to the cam portion. The dirt prevention mechanism includes a band-shaped Mylar sheet portion with one end rising from one side of the mounting portion and the other end thereof being bent toward the other side of the mounting portion,
The Mylar sheet portion is exposed when the opening/closing body is opened, and covers the grease attached to the slider and the cam portion, and when the opening/closing body is closed, the Mylar sheet portion is exposed. The opening/closing support device according to claim 1, wherein the opening/closing support device is housed in a Mylar sheet passage hole provided in the support member. The dirt prevention mechanism includes a cover piece formed on the front surface of the slider,
The cover piece portion is exposed when the opening/closing body is in the open state and covers the grease attached to the slider and the cam portion, and when the opening/closing body is in the closed state, the cover piece is exposed. The opening/closing support device according to claim 1, wherein the opening/closing support device is housed in a storage recess provided in the support member. Office equipment, characterized in that it uses the opening/closing support device according to any one of claims 1 to 4.

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