JP4996955B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device that supports an opening / closing member such as a document pressing plate such as a copying machine or an ADF (automatic document feeder).

  Examples of this type of opening / closing device include those shown in FIGS. 7 and 8 (see Patent Document 1). 7 and 8 includes an attachment member 32 attached to the copying machine main body 31, and a support member that is pivotally connected to the attachment member 32 via a hinge shaft 33 to support the original pressure plate 34. 35, a spring 36 interposed between the attachment member 32 and the support member 35 and biasing the document crimping plate 34 in the opening direction, and a document crimping plate provided between the attachment member 32 and the support member 35. And an opening / closing angle adjustment tool 37 for adjusting the opening / closing angle of the lens 34. The opening / closing angle adjuster 37 is screwed into a pair of left and right screw holes 39 formed in the rear wall portion 32c of the attachment member 32 through a pair of left and right elongated holes 38 extending vertically in the main body 37a. It is fixed to the rear wall portion 32c so as to be vertically slidable. The opening / closing angle adjuster 37 is disposed so that its front end portion 37c is in contact with the rear end edge 35a of the support member 35, and the opening / closing angle adjuster 37 is slid vertically to support the front end portion 37c. By changing the contact position with the rear end edge 35a of the member 35, the opening / closing angle of the original cover 34 can be adjusted.

Japanese Utility Model Publication No. 7-40957

  However, the opening / closing device has an advantage that the opening / closing angle of the original cover 34 can be adjusted steplessly. However, when the open / close angle of the original cover 34 is adjusted, the open / close angle adjuster 37 is attached to the rear wall 32c of the mounting member 32. In order to slide in the vertical direction, it is necessary to loosen or tighten each of the two left and right elongated holes 38 with screws 40, and the number of assembling members and the number of assembling steps are increased by the amount of two screws 40 required. However, there is a problem that it takes time and effort to adjust the opening / closing angle. Further, since the opening / closing angle adjuster 37 requires two elongated holes 38 on the left and right sides as described above, the width of the opening / closing angle adjuster 37 is increased in the left-right direction, and a large space is required for the opening / closing device. This is contrary to the recent reduction in the space occupied by the opening and closing devices of copying machines and the like. Further, after adjusting the opening / closing angle of the document pressing plate 34, the screw 40 is loosened due to impact or vibration when the document pressing plate 34 is opened / closed, and the opening / closing angle adjusting tool 37 is lowered to change the opening / closing angle of the document pressing plate 34. There was also a problem that there was a risk of coming.

  The present invention has been made to solve such problems, and can easily adjust the maximum opening angle of an opening and closing member such as an original pressure plate in two steps, and can reduce the number of assembly members and assembly man-hours. An object of the present invention is to provide a switchgear that can reduce the overall size of the device and the space occupied by the switchgear.

In order to facilitate understanding of the present invention, the present invention will be described with reference to the reference numerals shown in FIGS. 1 to 6, and a mounting member 3 attached to the apparatus main body 2 of the copying machine. The support member 5 is pivotally connected to the attachment member 3 via a hinge shaft 11 to support the opening / closing member 4 of the original pressure plate, and is interposed between the attachment member 3 and the support member 5 for support. The opening / closing member 4 is provided between the mounting member 3 and the support member 5, and an elastic member 6 that rotates and biases the opening / closing member 4 in the opening direction against the moment in the closing direction due to the weight of the opening / closing member 4. In an opening / closing apparatus provided with an angle adjuster 7 for adjusting the maximum opening angle of
The angle adjuster 7 is attached to the attachment member 3 so that it can be turned 180 degrees around a single screw 19 and fixed by tightening the screw 19, and is formed in a substantially symmetrical shape, and the screw 19 is inserted therethrough. the adjuster body 17 to the screw insertion hole 20 perforated Sico screw insertion hole 20 of is formed on the elongated hole extending in the vertical direction, the rear end of the rotating base end side of the provided support member 5 to the adjuster body 17 A first stopper portion 22 and a second stopper portion 23 that selectively engage with the edge 5a are provided, and the first stopper portion 22 engages with the rear end edge 5a of the support member 5 so that the first opening / closing member 4 is engaged. The second stopper portion 23 is engaged with the rear end edge 5a of the support member 5 so that the opening / closing member 4 has the first maximum opening angle θ1. Is limited to the second maximum opening angle θ2 with a different maximum opening angle. Those having features that are formed in the shape having the engagement surface 23a to be.
Further, according to the present invention, the attachment member 3 attached to the apparatus main body 2 on which the ADF is mounted, and the attachment member 3 is pivotally connected to the attachment member 3 via the hinge shaft 11 as described above. A supporting member 5 that supports the opening / closing member 4 of the ADF, and the supporting member 5 that is interposed between the mounting member 3 and the supporting member 5 opens the opening / closing member 4 against the moment in the closing direction due to the weight of the opening / closing member 4. An opening / closing apparatus comprising: an elastic member 6 that is urged to rotate in a direction; and an angle adjuster 7 that is provided between the attachment member 3 and the support member 5 and adjusts the maximum opening angle of the opening / closing member 4.
The angle adjuster 7 is attached to the attachment member 3 so that it can be turned 180 degrees around a single screw 19 and fixed by tightening the screw 19, and is formed in a substantially symmetrical shape, and the screw 19 is inserted therethrough. An adjustment tool main body 17 having a screw insertion hole 20 formed in a long hole extending in the vertical direction, and a rear end of the support member 5 provided on the adjustment tool main body 17 on the proximal side. A first stopper portion 22 and a second stopper portion 23 that selectively engage with the edge 5a are provided, and the first stopper portion 22 engages with the rear end edge 5a of the support member 5 so that the first opening / closing member 4 is engaged. The second stopper portion 23 is engaged with the rear end edge 5a of the support member 5 so that the opening / closing member 4 has the first maximum opening angle θ1. Is limited to the second maximum opening angle θ2 with a different maximum opening angle. Those having features that are formed in the shape having the engagement surface 23a to be.
According to the opening / closing device configured as described above, the maximum opening angle of the opening / closing member 4 can be increased by a simple operation of loosening one screw 19 and reversing the angle adjuster 7 about the screw 19 by 180 degrees. The maximum opening angle θ1 of 1 and the second maximum opening angle θ2 can be adjusted in two steps.
Further, since only one screw 19 and one screw insertion hole 20 are required, the number of assembling members and the number of assembling steps can be reduced, and the horizontal width of the angle adjuster 7 can be reduced. It is possible to reduce the size and the space occupied by the switchgear.

Also, opening and closing device according to claim 1, wherein the pre-Symbol screw insertion hole 20 is formed in a long hole extending vertically. According to this, when the angle adjuster 7 is reversed 180 degrees, the rear end of the support member 5 is obtained by shifting the angle adjuster 7 downward along the screw insertion hole 20 while the screw 19 is slightly loosened. The space | interval between the edges 5a can be expanded, and inversion space can be ensured.

  The switchgear according to claim 1 or 2 is configured to control the angle adjuster 7 to the first maximum opening angle θ1 between the attachment member 3 and the angle adjuster 7 as described in claim 3. Positioning means 24 for selectively positioning in a posture controlled to the second maximum opening angle θ2 may be provided. According to this, the positioning of the angle adjuster 7 can be easily and reliably performed when changing the setting of the first maximum opening angle θ1 and the second maximum opening angle θ2.

  According to the present invention, the maximum opening angle of the opening / closing member can be easily adjusted in two stages, the first maximum opening angle and the second maximum opening angle, and the number of assembly members and assembly man-hours can be reduced. It is possible to reduce the size and the space occupied by the switchgear.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a switchgear according to the invention will be described with reference to the drawings. FIG. 1 is an explanatory view of an operation in which an original pressing plate is opened to a first maximum opening angle and a second maximum opening angle in a state where an opening / closing device according to an embodiment of the present invention is attached to a copying machine. FIG. 3 is a sectional view of the switchgear showing the state controlled to the first maximum opening angle, and FIG. 4 shows the state controlled to the first maximum opening angle. FIG. 5 is a sectional view of the switchgear showing a state controlled to the second maximum opening angle, and FIG. 6 is a perspective view of the switchgear showing a state controlled to the second maximum opening angle.

  As shown in FIGS. 1 to 4, an opening / closing apparatus 1 according to the present invention includes an attachment member 3 attached to an apparatus main body 2 such as a copying machine, and is pivotally connected to the attachment member 3 while being crimped to a document. A supporting member 5 that supports the opening / closing member 4 such as a plate or ADF, and the mounting member 3 is interposed between the supporting member 5 and the supporting member 5 against the moment in the closing direction due to the weight of the opening / closing member 4. An angle adjustment tool that is provided between the attachment member 3 and the support member 5 and adjusts the maximum opening angle of the opening / closing member 4 in two stages, large and small, and is provided between the attachment member 3 and the support member 5 to urge the opening / closing member 4 in the opening direction. 7.

  As shown in FIGS. 1 and 3, the attachment member 3 has a head portion 8 and a leg portion 9, and the leg portion 9 is inserted into an attachment hole 10 that is recessed in the upper surface of the device main body 2, whereby the upper surface of the device main body 2. It is attached so that the head 8 may protrude.

  As shown in FIG. 3, the support member 5 has a rear end portion on the rotation base end side thereof pivotally connected to the head portion 8 of the attachment member 3 via a hinge shaft 11 so as to be rotatable in the vertical direction. A slider 12 is incorporated in the support member 5 so as to be slidable in the front-rear direction, and the elastic member 6 such as a compression coil spring is interposed between the slider 12 and the spring receiver 13.

  As shown in FIG. 3, a cam mechanism 14 is provided between the slider 12 of the support member 5 and the head 8 of the mounting member 3. The cam mechanism 14 includes a cam member 15 having a cam surface 15 a fixed to the head portion 8 of the mounting member 5, and a cam follower 16 provided integrally on the back side of the slider 12. In the cam mechanism 14, the cam follower 16 contacts the portion of the cam member 15 farthest from the axis of the hinge shaft 11 on the cam surface 15 a of the cam member 15 in the vicinity of the fully closed angle of the opening / closing member 4 to compress the slider 12 to compress the elastic member 6. The cam follower 16 is slidably contacted with the portion of the cam surface 15a that approaches the axial center of the hinge shaft 11 as the opening / closing member 4 is gradually opened largely, and the elastic member 6 is gradually extended longer. The slider 12 is moved backward.

  That is, when the opening / closing member 4 is fully closed, the elastic member 6 is in the most compressed state via the slider 12 pressed by the cam mechanism 14 and the magnitude of the closing direction moment generated by the weight of the opening / closing member 4 is large. And the magnitude of the moment in the opening direction due to the elastic force of the elastic member 6 maintains a balance, and the fully closed state of the opening / closing member 4 is maintained. When the opening / closing member 4 is opened from this fully closed state, the slider 12 is cammed by the elastic action of the elastic member 6 that is biased to rotate in the opening direction against the moment in the closing direction due to the weight of the opening / closing member 4. The opening / closing member 4 is gradually opened greatly while moving backward through the mechanism 14.

  In the present invention, the maximum opening angle of the opening / closing member 4 between the mounting member 3 and the support member 5 of the opening / closing device 1 is different from the first maximum opening angle θ1 and the first maximum opening angle θ1. It is characterized in that an angle adjuster 7 for adjusting in two stages of the maximum opening angle θ2 is provided. The first maximum opening angle θ1 is set to, for example, 60 degrees for use by a normal user, and the second maximum opening angle θ2 is opened and closed by a user in a wheelchair as shown in FIG. The angle at which the hand can reach the member 4, for example, 30 degrees.

As shown in FIG. 2, the angle adjuster 7 includes a rectangular plate-shaped adjuster body 17 formed in a substantially symmetrical shape, and left and right foldings bent backward from the left and right ends of the adjuster body 17. It is formed in a shape having a curved piece 18. The adjustment tool body 17 is provided with one screw insertion hole 20 through which the screw 19 is inserted in the central portion in the left-right width direction, and a female screw hole 21 into which the screw 19 is screwed on the back side of the head 8 of the mounting member 3. Thus, the angle adjuster 7 is configured such that the screw insertion hole 20 is matched with the female screw hole 21 and the screw 19 is screwed from the screw insertion hole 20 into the female screw hole 21 on the back surface of the head 8 of the mounting member 3. The screw 19 can be turned 180 degrees around the center and fixed by tightening the screw 19. The screw insertion hole 20 is formed as a long hole extending in the vertical direction.
A first stopper portion 22 and a second stopper portion 23 are formed on the upper and lower edges of the left and right bent pieces 18. The first stopper portion 22 is formed in a shape having an engagement surface 22a that engages with the rear end edge 5a of the rotation base end side of the support member 5 to control the opening / closing member 4 to the first maximum opening angle θ1. The second stopper portion 23 is formed to have an engagement surface 23a that engages with the rear end edge 5a of the support member 5 and controls the opening / closing member 4 to the second maximum opening angle θ2.

Between the rear surface side of the attachment member 3 and the angle adjuster 7, the adjuster body 17 is selectively positioned in a posture that controls the first maximum opening angle θ1 and a posture that controls the second maximum opening angle θ2. Positioning means 24 is provided. The positioning means 24 includes a positioning protrusion 25 and a positioning hole 26. That is, as shown in FIG. 2, the positioning protrusions 25 are provided on both left and right sides of the female screw hole 21 provided on the back side of the head 8 of the mounting member 3, while the left and right sides of the screw insertion holes 20 of the adjustment tool body 17 are provided on the left and right sides. Positioning holes 26 that selectively engage with the positioning protrusions 25 are provided symmetrically.

Thus, when the opening / closing member 4 is adjusted to the first maximum opening angle θ1, as shown in FIGS. 3 and 4, the adjustment tool main body 17 is placed so that the engagement surface 22a of the first stopper portion 22 faces upward. Further, the positioning hole 26 is fitted into the positioning projection 25 and the screw 19 is tightened and fixed. Then, when the opening / closing member 4 is opened to the first maximum opening angle θ1, the rear end edge 5a of the support member 5 is engaged with the engagement surface 22a of the first stopper portion 22 so that the opening / closing member 4 is opened. Can be stopped in position.
When the opening / closing member 4 is changed and adjusted to the second maximum opening angle θ2 from this state, the tightening of the screw 19 is loosened to some extent, and the angle adjusting tool 7 is shifted downward along the screw insertion hole 20 to thereby adjust the support member 5. The space between the rear edge 5a can be widened to secure a reversal space, and the angle adjuster 7 is reversed 180 degrees around the screw 19 in this reversal space. By this 180 degree reversal, as shown in FIGS. 5 and 6, the engagement surface 23 a of the second stopper portion 23 faces upward, the positioning hole 26 is fitted to the positioning projection 25, and the screw 19 is tightened to The adjusting tool 7 is fixed in a posture in which the engaging surface 23a of the second stopper portion 23 faces upward. Then, when the opening / closing member 4 is opened to the second maximum opening angle θ2, the rear end edge 5a of the support member 5 is engaged with the engagement surface 23a of the second stopper portion 23, and the opening / closing member 4 is thereby opened. Can be stopped in position.

According to the opening / closing device 1 configured as described above, the maximum opening angle of the opening / closing member 4 can be set to the first maximum opening angle by a simple operation of loosening one screw 19 and reversing the angle adjuster 7 180 degrees. It can be adjusted in two steps of the magnitude of θ1 and the second maximum opening angle θ2.
Moreover, since only one screw 19 and one screw insertion hole 20 are sufficient, the number of assembling members and the number of assembling steps can be reduced accordingly. Furthermore, since only one screw insertion hole 20 is required, the lateral width of the angle adjuster 7 can be reduced, and the entire switchgear 1 can be reduced in size, and the occupied space of the switchgear 1 can be reduced. Can do.

  Note that when the opening / closing member 4 is desired to be opened to around 90 degrees during maintenance or the like, the angle adjuster 7 is removed from the mounting member 3 together with the screws 19. Thus, the opening / closing member 4 can be opened up to 90 degrees.

FIG. 5 is an operation explanatory diagram in which the original cover is opened to a first maximum opening angle and a second maximum opening angle in a state where the opening / closing device according to the embodiment of the present invention is attached to the copying machine. It is the disassembled perspective view which isolate | separated the angle adjustment tool from the switchgear. It is sectional drawing of the switchgear which shows the state controlled to the 1st maximum opening angle. It is a perspective view of the switchgear which shows the state controlled to the 1st maximum opening angle. It is sectional drawing of the switchgear which shows the state controlled to the 2nd maximum opening angle. It is a perspective view of the switchgear which shows the state controlled to the 2nd maximum opening angle. It is a longitudinal cross-sectional view of the switchgear of a prior art example. It is a perspective view of the opening / closing apparatus of FIG.

DESCRIPTION OF SYMBOLS 1 Opening / closing apparatus 2 Apparatus main body 3 Mounting member 4 Opening / closing member 5 Support member 5a Rear edge 6 Elastic member 7 Angle adjustment tool 11 Hinge shaft 17 Adjustment tool main body 19 Screw 20 Screw insertion hole 22 1st stopper part 22a Engagement surface 23 1st 2 stopper part 23a engaging surface 24 positioning means ( consisting of positioning projection 25 and positioning hole 26)

Claims (3)

An attachment member attached to the apparatus main body of the copying machine, a support member pivotally connected to the attachment member via a hinge shaft to support an opening / closing member of the original pressure plate , the attachment member, and the support member; An elastic member interposed between the mounting member and the support member, and an elastic member that rotates and biases the opening and closing member against the moment in the closing direction due to the weight of the opening and closing member. And an opening / closing apparatus provided with an angle adjusting tool for adjusting a maximum opening angle of the opening / closing member,
The angle adjuster is mounted to the mounting member so that it can be turned 180 degrees around a single screw and fixed by tightening the screw, and is formed in a substantially symmetrical shape and through which the screw is inserted. and an adjustment tool body screw insertion hole of the perforated Sico is formed in a long hole extending in the vertical direction, selectively engage the rear edge of the rotating base end side of the support member is provided on the adjuster body A first stopper portion and a second stopper portion, and the first stopper portion engages with a rear end edge of the support member and has an engagement surface for controlling the opening / closing member to a first maximum opening angle. The second stopper portion engages with a rear end edge of the support member to control the opening / closing member to a second maximum opening angle different from the first maximum opening angle. It is formed in a shape having a mating surface, Closing device.
An attachment member attached to the apparatus body on which the ADF is mounted; a support member pivotally connected to the attachment member via a hinge shaft to support the opening / closing member of the ADF; the attachment member and the support member; An elastic member interposed between the mounting member and the support member, and an elastic member that rotates and biases the opening and closing member against the moment in the closing direction due to the weight of the opening and closing member. And an opening / closing apparatus provided with an angle adjusting tool for adjusting a maximum opening angle of the opening / closing member,
The angle adjuster is mounted to the mounting member so that it can be turned 180 degrees around a single screw and fixed by tightening the screw, and is formed in a substantially symmetrical shape and through which the screw is inserted. and an adjustment tool body screw insertion hole of the perforated Sico is formed in a long hole extending in the vertical direction, selectively engage the rear edge of the rotating base end side of the support member is provided on the adjuster body A first stopper portion and a second stopper portion, and the first stopper portion engages with a rear end edge of the support member and has an engagement surface for controlling the opening / closing member to a first maximum opening angle. The second stopper portion engages with a rear end edge of the support member to control the opening / closing member to a second maximum opening angle different from the first maximum opening angle. It is formed in a shape having a mating surface, Closing device.   Positioning means is provided between the mounting member and the angle adjuster to selectively position the angle adjuster in a posture that controls the first maximum opening angle and a posture that controls the second maximum opening angle. The switchgear according to claim 1 or 2.

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