JP5724253B2 - Door opener - Google Patents

Description

  The present invention relates to a door opening / closing device installed in various devices such as a post-processing device of a printer, and more particularly to a hinge mechanism that supports the door so that the door can be opened and closed.

  A door opening / closing device installed in various devices requires a hinge mechanism having at least one rotation fulcrum. However, when the door is hinged at one rotation fulcrum, for example, if the maximum rotation angle of the door is to be set to 180 degrees, the rotation fulcrum must be projected to the front side of the door surface. And considering safety, it becomes a negative factor.

  In view of this, there is already known a technique that can obtain the maximum opening of the door without impairing the appearance and safety of the apparatus by using a hinge mechanism having a plurality of rotation fulcrums.

  However, in the conventional hinge mechanism having a plurality of rotation fulcrums, each of the fulcrums freely moves (moves), so when the door is closed, a gap is easily formed near the fulcrum, and the opening and closing operation of the door is jerky. In some cases, it is necessary to perform an opening / closing operation in a two-step motion, resulting in poor operability. Furthermore, in order to improve the operability, there is a problem that the configuration becomes complicated, the number of parts and the number of assembling steps are increased, the cost is increased, and the size is increased.

  Conventionally, for example, Patent Document 1 (Japanese Patent Laid-Open No. 9-158593) has a plurality of door rotation fulcrums for the purpose of increasing the maximum rotation angle of the door, and at the time of opening the door, the hinge pin is at least on the door side. A door opening / closing device that can open and close the door up to 180 degrees without interfering with an adjacent door has been proposed.

  10 and 11 are diagrams for explaining the door opening and closing device. FIG. 10 is a plan view of a main part of the door opening and closing device with the door closed, and FIG. 11 is a schematic diagram of the door opening and closing device with the door open. FIG.

  In these drawings, reference numeral 21 denotes a fixed hinge member fixed to the box body 22, 23 denotes a movable hinge member, 24 denotes a first connecting pin for connecting the fixed hinge member 21 and the movable hinge member 23, and 25 denotes the movable hinge member. A second connecting pin 27 for connecting the door 23 and the door 26, 27 is an adjacent box adjacent to the box 22, and 28 is an adjacent door that can be opened and closed by the box 27.

Next, the opening / closing operation of the door opening / closing device will be described.
When the door 26 is opened from the state of FIG. 10 in which the door 26 is closed, both the door 26 and the movable hinge member 23 rotate with the first connecting pin 24 as a fulcrum, and then rotate to the state of FIG. Further rotates about the second connecting pin 25 as a fulcrum, and finally the state shown in FIG. 11 is obtained.

Since the door 26 is thus opened, the door 26 can be opened up to 180 degrees without interfering with the adjacent door 28.
When the door 26 is closed, the operation reverse to that described above can be performed to return to the closed state of FIG.

  However, in the door opening and closing apparatus shown in FIGS. 10 and 11, since the movable hinge member 23 can freely rotate when the door 26 is closed, the vicinity of the movable hinge member 23 is easily opened. The problem of poor nature has not been resolved.

  An object of the present invention is to provide a door opening / closing device that eliminates the disadvantages of the prior art, has a simple structure, is difficult to open near the hinge, and has good operability.

In order to achieve the above object, both the first and second aspects of the present invention are directed to a door opening / closing device including a box, a door, and a hinge mechanism that supports the door so that the door can be opened and closed. To do.

In the first aspect of the present invention , the hinge mechanism is
A hinge part base member in a fixed state provided on an end side of the door;
A movable hinge member provided between the door and its hinges base member,
A first hinge pin provided on the hinge base member side of the movable hinge member and rotatable relative to the hinge base member as the door is opened and closed;
A second hinge pin provided on the door side of the movable hinge member and rotatable relative to the door as the door is opened and closed;
A rotation area between the door closing position and the opening completion position includes a first rotation area between the door closing position and the intermediate position, and a second rotation area between the door intermediate position and the opening completion position. Divided into rotation areas,
In the first rotation region, the door and the movable hinge member rotate together using the first hinge pin as a rotation fulcrum,
In the second rotation region, rotation of the movable hinge member is prevented, and only the door rotates with the second hinge pin as a rotation fulcrum,
In the state where the door is in the closed position, the movable hinge member is locked to the door ,
A stopper in the middle of opening is provided at the boundary between the first rotation area and the second rotation area, and a movable hinge member that rotates together with the door is in contact with the stopper in the middle of opening to prevent rotation. Only the door is rotated from the second rotation area,
A fixing pin is provided on the side of the door that faces the movable hinge member, and a locking recess into which the tip of the fixed pin is fitted is formed in the movable hinge member.
In the first rotation region, the distal end portion of the fixed pin is fitted into the locking recess of the movable hinge member, and the door and the movable hinge member rotate together,
The movable hinge member abuts on the stopper during opening to prevent the movable hinge member from rotating,
In the second rotation region, the distal end portion of the fixed pin is disengaged from the locking concave portion of the movable hinge member, and only the door is rotated .

In the second aspect of the present invention, the hinge mechanism is
A fixed hinge part base member provided at an end of the door;
A movable hinge member provided between the hinge base member and the door;
A first hinge pin provided on the hinge base member side of the movable hinge member and rotatable relative to the hinge base member as the door is opened and closed;
A second hinge pin provided on the door side of the movable hinge member and rotatable relative to the door as the door is opened and closed;
A rotation area between the door closing position and the opening completion position includes a first rotation area between the door closing position and the intermediate position, and a second rotation area between the door intermediate position and the opening completion position. Divided into rotation areas,
In the first rotation region, the door and the movable hinge member rotate together using the first hinge pin as a rotation fulcrum,
In the second rotation region, rotation of the movable hinge member is prevented, and only the door rotates with the second hinge pin as a rotation fulcrum,
In the state where the door is in the closed position, the movable hinge member is locked to the door,
Between the door and the second hinge pin, a torque limiter for providing a constant load to the second hinge pin is installed .

  The present invention is configured as described above, and can provide a door opening and closing device that has a simple structure, is difficult to open near the hinge, and has good operability.

In 1st Embodiment of this invention, it is a block diagram of the hinge mechanism part in the state which cut | disconnected the B section of FIG. 9 and the door looked from the C direction closed. It is sectional drawing on the FIG.1D-D line. It is a block diagram of the hinge mechanism part in the state in the middle of opening a door. It is sectional drawing on the FIG. 3E line. It is a block diagram of the hinge mechanism part in the state which opened the door. It is sectional drawing of the hinge mechanism part. It is principal part sectional drawing of the door opening / closing apparatus which concerns on 2nd Embodiment of this invention. It is principal part sectional drawing of the door opening / closing apparatus which concerns on 3rd Embodiment of this invention. 1 is an external perspective view of a printer post-processing device to which a door opening and closing device according to an embodiment of the present invention is applied. It is a principal part top view which shows the closed state of the door opening / closing apparatus proposed conventionally. It is a principal part top view which shows the open state of the door opening / closing apparatus.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 9 is an external perspective view of the post-processing device 50 of the printer provided with the door opening and closing device according to the embodiment of the present invention.

The post-processing device 50 is connected to a paper discharge side of a printer (not shown). The paper on which an image is formed is carried in by the printer, the post-processing is performed on the paper, and the post-processing device 50 discharges the paper. It is a mechanism to do.
As shown in FIG. 9, the door 1 is supported so as to be openable and closable with respect to a box 51 called a casing or a housing of the post-processing device 50, and A in the figure is a hinge mechanism portion.

  1 to 6 are diagrams for explaining each state of the door opening and closing device according to the first embodiment of the present invention. 1 is a configuration diagram of a hinge mechanism section in a state in which the door 1 viewed from the direction C is closed by cutting the portion B in FIG. 9, FIG. 2 is a cross-sectional view taken along the line D-D in FIG. FIG. 4 is a cross-sectional view taken along the line E-E in FIG. 3, FIG. 5 is a configuration diagram of the hinge mechanism part with the door 1 opened, and FIG. 6 is the hinge mechanism part. FIG.

  In these figures, reference numeral 1 denotes a door, which is supported by a box 51 so as to be opened and closed by a hinge mechanism A provided on the lower side as shown in FIG. Reference numeral 2 denotes a plate-like hinge base member that is fixed to the box 51 and holds the hinge mechanism A.

  As shown in FIG. 2, a first bearing 7 is fixed at a predetermined position of the hinge base member 2, and the first hinge pin 4 is rotatably inserted into the first bearing 7. The first hinge pin 4 is fixed to the lower surface near one end of a quadrangular plate-shaped movable hinge member 3 that is rotatably arranged on the hinge base member 2. Accordingly, the first hinge pin 4 connects the hinge base member 2 and the movable hinge member 3 and functions as a rotation fulcrum of the door 1 as will be described later.

  Further, a second hinge pin 5 is erected on the upper surface near the other end of the movable hinge member 3, and the second hinge pin 5 is rotatably inserted into a second bearing 8 attached to the door 1. Has been. Therefore, the second hinge pin 5 connects the door 1 and the movable hinge member 3 and functions as a rotation fulcrum of the door 1 as will be described later. The distance between the first hinge pin 4 and the second hinge pin 5 substantially corresponds to the thickness of the door 1.

  A fixed pin 6 is attached to the lower surface of the door 1 toward the movable hinge member 3, and a lower end portion of the fixed pin 6 is a conical portion 13 with a slightly rounded tip. On the other hand, as shown in FIG. 6, a locking recess 14 having the same conical shape as the cone 13 is formed on the upper surface of the movable hinge member 3, and the center of the locking recess 14 is the first. It is on the axis of the hinge pin 4.

  Therefore, as shown in FIG. 2, in a state where the conical portion 13 of the fixing pin 6 is fitted into the locking recess 14 due to its own weight, the fixing pin 6 is on the same axis as the first hinge pin 4. In addition, since the second hinge pin 5 is fitted in the second bearing 8, the door 1 and the movable hinge member 3 can be rotated together around the first hinge pin 4.

As shown in FIG. 3, an opening stopper 9 for preventing the movable hinge member 3 from rotating while the door 1 is being opened (in this embodiment, the opening angle of the door 1 is 90 °) is provided on the hinge base member 2. Is provided. Further, as shown in FIG. 1, the hinge base member 2 is provided with a closing stopper 54 with which the movable hinge member 3 abuts when the door 1 is in a closed state.
Reference numeral 52 shown in FIG. 1 and the like is an adjacent box adjacent to the box 51, and 53 is a door of the box 51.

Next, the opening / closing operation | movement of the door 1 is demonstrated.
1 and 2 show a state in which the door 1 is closed with respect to the box 51. In this state, the conical portion 13 of the fixed pin 6 is fitted in the locking concave portion 14 of the movable hinge member 3 by the dead weight of the door 1, and the second hinge pin 5 is fitted in the second bearing 8. When the door 1 is opened in the direction of the arrow shown in FIG. 1, the door 1 -the second bearing 8 -the second hinge pin 5 -the fixed pin 6 -the movable hinge member 3 -the first hinge pin 4 is used with the first hinge pin 4 as a fulcrum. It rotates in the direction of the arrow shown in FIG.

  When the door 1 is rotated to the position shown in FIG. 3 (90 ° in the present embodiment), the side surface of the movable hinge member 3 is in contact with the stopper 9 during the opening, and further rotation is restricted, and the rotation of the movable hinge member 3 is performed. Is blocked.

  In the present invention, the period from the closed state of the door 1 until the movable hinge member 3 is in contact with the stopper 9 during the opening and the rotation is prevented is referred to as a first rotation region. It is provided at the boundary between one rotation area and a second rotation area described later.

  When the door 1 is continuously opened, the rotation fulcrum of the door 1 moves from the first hinge pin 4 to the second hinge pin 5, and at the same time, against the dead weight of the door 1, the cone of the fixed pin 6 as shown by the arrow F in FIG. The part 13 comes out of the locking recess 14 of the movable hinge member 3, rides on the movable hinge member 3 (illustrated by a dotted line), and gets over it.

  The locking recess 14 has a conical shape, and as shown in FIG. 4, one end edge of the movable hinge member 3 is tapered or rounded, so that it is fixed on the movable hinge member 3. Passing over the pin 6 is performed smoothly. During this ride, the second hinge pin 5 slides up and down in the second bearing 8, and the door 1 also slides up and down, but the slide width is very small and does not affect operability.

  In addition, although not shown in figure, between the upper end part of the door 1 and the box 51 in this embodiment, the door 1 is moved up and down. A clearance is provided for allowance.

  Thereafter, the door 1 rotates in the direction of the arrow with the second hinge pin 5 as a rotation fulcrum, and can be opened up to 180 degrees from the state shown in FIG. 1, as shown in FIG. The maximum opening can be obtained without interfering with. In the present invention, the period from the rotation intermediate position of the door 1 in contact with the stopper 9 during the opening of the movable hinge member 3 to the end of the rotation is referred to as a second rotation region.

  When the door 1 is closed, the reverse operation is performed. The door 1 rotates from the second rotation region to the first rotation region, and the fixed pin 6 is attached to the end of the movable hinge member 3 during that time. The movable hinge member 3 is connected to the door 1 by smoothly riding on the upper surface of the movable hinge member 3 by the taper provided at the edge or the guide of the roundness 15 and fitting into the locking recess 14 of the movable hinge member 3. As shown in FIG. 1, the movable hinge member 3 comes into contact with the closing stopper 54 to prevent the movable hinge member 3 from rotating and the door 1 is closed. 1 and the state of FIG.

  The fixing pin 6 has another function, and as long as the door 1 is closed, the conical portion 13 of the movable hinge member 3 is always provided with the locking recess 14 of the movable hinge member 3 as shown in FIG. By being fitted (engaged) with each other, the door 1 does not open in the vicinity of the hinge portion by being in a state similar to that of a door having a normal single rotation fulcrum.

  In the conventional door opening / closing apparatus shown in FIG. 10, since the movable hinge member 23 rotates freely, the door 1 and the movable hinge member 3 are kept together until the state shown in FIG. 1 is changed to the state shown in FIG. The rotating motion cannot be guaranteed. Further, even when the door is closed, the movable hinge member 23 rotates freely, so that the door 26 near the movable hinge member 23 becomes easy to open, but this is not the case in the present invention.

FIG. 7 is a cross-sectional view of a main part of a door opening and closing device according to the second embodiment of the present invention.
In this embodiment, the difference from the first embodiment shown in FIG. 2 is that the door 1 is provided with a coil spring-like spring 10 and a cup-like spring receiving portion 11, and the fixing pin 6 is driven by the spring force of the spring 10. Is elastically pressed against the movable hinge member 3 side.

  If the spring 10 is interposed between the door 1 and the fixed pin 6 in this way, the fixed pin 6 may deviate from the initial position of the movable hinge member 3 (the fitting position of the conical portion 13 and the locking recess 14), or On the contrary, when the spring 10 is returned to the initial position, the door 10 is not moved up and down simply by contracting.

FIG. 8 is a cross-sectional view of a main part of a door opening and closing device according to the third embodiment of the present invention.
In this embodiment, the difference from the first embodiment shown in FIG. 2 is that the fixing pin 6 is eliminated, and a torque limiter 12 that can apply a constant load to the second hinge pin 5 instead of the second bearing 8. This is the point.

Due to the load of the torque limiter 12, the movable hinge member 3 moves together with the door 1 in the first rotation region from the state of FIG. 1 to the state of FIG. 2, and then the door 1 rotates with the second hinge pin 5 as a fulcrum. At that time, the load is applied to the door 1 due to the load of the torque limiter 12, but the door 1 can be opened and closed without impeding operability by adjusting the set torque value.
Since the fixing pin 6 is not used, the door 1 does not move up and down when the door is opened and closed in this embodiment.

Next, effects according to the claims of the present invention will be described as follows.
According to the first aspect of the present invention, it is possible to provide a door opening and closing device that has a simple structure, is difficult to open in the vicinity of the hinge, and has good operability.
In the second aspect of the present invention, since the opening stopper is provided at the boundary between the first rotation area and the second rotation area, the rotation by the first hinge pin and the rotation by the second hinge pin can be reliably switched. Therefore, the operation reliability can be improved.

  In the third aspect of the present invention, the fixing pin is provided on the side of the door facing the movable hinge member, and the locking hinge into which the distal end portion of the fixed pin is fitted is formed on the movable hinge member. Switching between rotation by the first hinge pin and rotation by the second hinge pin can be reliably performed, and the operation reliability can be improved.

  In the invention according to claim 4, since the tip end portion of the fixing pin has a conical shape, the fixing pin is smoothly pulled out from the locking recess and fitted into the locking recess.

  In the invention according to claim 5, since the gap is provided between the box opposite to the side on which the hinge mechanism portion is provided and the door, the fixing pin is not subjected to excessive force on the door. Can be smoothly removed from the locking recess and fitted into the locking recess.

In the invention according to claim 7, since the spring is interposed between the door and the fixing pin, it is not necessary to move the door up and down when the door is opened and closed, and the operability is good.
In the invention described in claim 8, since the torque limiter for applying a constant load to the second hinge pin is installed, bearings for the fixed pin and the second hinge pin are unnecessary, and the door is moved up and down when the door is opened and closed. Therefore, the number of parts can be reduced and the operability can be improved.

  DESCRIPTION OF SYMBOLS 1 ... Door, 2 ... Hinge part base member, 3 ... Movable hinge member, 4 ... 1st hinge pin, 5 ... 2nd hinge pin, 6 ... Fixed pin, 7 ... 1st bearing, 8 ... 2nd bearing, 9 ... Opening stopper, 10 ... Spring, 11 ... Spring receiving part, 12 ... Torque limiter, 13 ... Conical part, 14 ..Recess for locking, 15... Taper or roundness, 50... Post-processing device, 51 .. box, 52 .. adjacent box, 53. -Close stopper, A ... Hinge mechanism.

JP-A-9-158593

Claims (7)

In a door opening and closing device comprising a box, a door, and a hinge mechanism that supports the door so that the door can be opened and closed,
The hinge mechanism is
A hinge part base member in a fixed state provided on an end side of the door;
A movable hinge member provided between the door and its hinges base member,
A first hinge pin provided on the hinge base member side of the movable hinge member and rotatable relative to the hinge base member as the door is opened and closed;
A second hinge pin provided on the door side of the movable hinge member and rotatable relative to the door as the door is opened and closed;
A rotation area between the door closing position and the opening completion position includes a first rotation area between the door closing position and the intermediate position, and a second rotation area between the door intermediate position and the opening completion position. Divided into rotation areas,
In the first rotation region, the door and the movable hinge member rotate together using the first hinge pin as a rotation fulcrum,
In the second rotation region, rotation of the movable hinge member is prevented, and only the door rotates with the second hinge pin as a rotation fulcrum,
In the state where the door is in the closed position, the movable hinge member is locked to the door ,
A stopper in the middle of opening is provided at the boundary between the first rotation area and the second rotation area, and a movable hinge member that rotates together with the door is in contact with the stopper in the middle of opening to prevent rotation. Only the door is rotated from the second rotation area,
A fixing pin is provided on the side of the door that faces the movable hinge member, and a locking recess into which the tip of the fixed pin is fitted is formed in the movable hinge member.
In the first rotation region, the distal end portion of the fixed pin is fitted into the locking recess of the movable hinge member, and the door and the movable hinge member rotate together,
The movable hinge member abuts on the stopper during opening to prevent the movable hinge member from rotating,
In the second rotation region, the door opening / closing device is configured such that the distal end portion of the fixed pin is disengaged from the locking recess of the movable hinge member and only the door rotates . The door opening and closing apparatus according to claim 1,
The door opening and closing device characterized in that a tip end portion of the fixing pin has a conical shape . The door opening and closing device according to claim 1 or 2,
Between the box opposite to the side where the hinge mechanism is provided and the door, the tip of the fixed pin comes out of the locking recess of the movable hinge member and rides on the surface of the movable hinge member. A door opening and closing device characterized in that a clearance is provided for allowing the passenger to get over. The door opening and closing device according to claim 1 or 2 ,
A door opening / closing device, wherein a locking recess of the movable hinge member is provided on the same axis as the first hinge pin . The door opening and closing device according to claim 1 or 2 ,
A spring receiving portion is provided at a fixed pin installation position of the door, and a spring is interposed between the spring receiving portion and the fixed pin, and the spring compresses so that the distal end portion of the fixed pin becomes the movable hinge. A door opening and closing device characterized in that the door opening and closing device is configured to allow the member to escape from the locking recess of the member and ride on the surface of the movable hinge member . In a door opening and closing device comprising a box, a door, and a hinge mechanism that supports the door so that the door can be opened and closed,
The hinge mechanism is
A fixed hinge part base member provided at an end of the door;
A movable hinge member provided between the hinge base member and the door;
A first hinge pin provided on the hinge base member side of the movable hinge member and rotatable relative to the hinge base member as the door is opened and closed;
A second hinge pin provided on the door side of the movable hinge member and rotatable relative to the door as the door is opened and closed;
A rotation area between the door closing position and the opening completion position includes a first rotation area between the door closing position and the intermediate position, and a second rotation area between the door intermediate position and the opening completion position. Divided into rotation areas,
In the first rotation region, the door and the movable hinge member rotate together using the first hinge pin as a rotation fulcrum,
In the second rotation region, rotation of the movable hinge member is prevented, and only the door rotates with the second hinge pin as a rotation fulcrum,
In the state where the door is in the closed position, the movable hinge member is locked to the door,
A door opening / closing device , wherein a torque limiter for applying a constant load to the second hinge pin is installed between the door and the second hinge pin . The door opening and closing device according to claim 6 ,
A stopper in the middle of opening is provided at the boundary between the first rotation area and the second rotation area, and a movable hinge member that rotates together with the door is in contact with the stopper in the middle of opening to prevent rotation. The door opening and closing device is configured so that only the door rotates from the second rotation region .

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