JP2005179906A - Lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lifting device easy of storing operation while preventing the entry of dust or others into a storage case. <P>SOLUTION: The lifting device 1 comprises the box-shaped storage case 3 having an open front face, a lift shelf 2 provided therein via a pair of parallel supporting links in a freely up-and-down liftable manner, a door structure 19 for covering the front face of the storage case 3, and door opening/closing mechanisms 20a, 20b. The door structure 19 consists of an upper door 6 and a lower door 7 which are integrated each other to be freely opened/closed with an upper side portion of the upper door 6 as a supporting point after the lower door 7 is slid to a position where it is overlapped with the upper door 6. In the state that the upper door 6 and the lower door 7 are integrated with each other, the door opening/closing mechanisms 20a, 20b moves the upper door 6 and the lower door 7 to be opened with the lift shelf 2 pulled out to the front lower side. Thus, the doors can be opened/closed only by the movement of the lift shelf 2, resulting in the lifting device 1 to be easy of operation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lifting device, and more particularly to a lifting device that can lift and lower a lifting shelf such as a kitchen.

  18 is a front view showing a schematic configuration of a conventional lifting device used in a kitchen, and FIG. 19 is a cross-sectional view taken along the line XIX-XIX shown in FIG.

  Referring to these drawings, a lifting case 2 having a box shape with the front face opened is housed in a storage case 3 having a box shape with the front face open to constitute a pair of parallel support links. The lifting shelf 2 is supported by the front support links 4a and 4b and the rear support links 5a and 5b. Since the lifting device 81 is configured symmetrically, only the configuration and operation on the left side of the lifting shelf 2 will be described below.

  In the left part of the lifting device 81, the upper end portion of the front support link 4a is rotatably attached to a mounting plate 84a on the side plate 44a of the lifting shelf 2 via a shaft 11a, and its lower end portion is a storage case. 3 is fixed to the rotating shaft 13a of the mechanism box 10a fixed to the inner surface of the support plate 9a. Further, the upper end portion of the rear support link 5a is rotatably attached to the attachment plate 84a via the shaft 12a, and the lower portion thereof is fixed to the rotation shaft 14a of the mechanism box 10a. Since the elevating shelf 2 is supported in this manner, the elevating shelf 2 can be moved freely from the open surface of the storage case to the front lower side between the positions of the two-dot chain line shown in FIG. Is possible.

  A spiral spring 82a and an oil damper 83a are attached to the inside of the mechanism box 10a fixed to the inner surface of the support plate 9a.

  The spiral spring 82a has an inner end fixed to a rotating shaft 14a inserted through the mechanism box 10a, and an outer end fixed to a portion other than the rotating shaft 14a. The spiral spring 82a is attached to urge the rotating shaft 14a in a direction opposite to the rotating direction of the rotating shaft 14a generated by pulling the lifting shelf 2 to reduce the storing operation of the lifting shelf 2. It is what.

  The oil damper 83a is attached to the mechanism box 10a so that its upper end is rotatable via a shaft, and its lower end is rotatable to a damper mounting shaft 18a inserted into the mechanism box 10a. Installed on. The damper mounting shaft 18a is connected to the lower end portion of the rear support link 5a outside the mechanism box 10a, and can move around the rotation shaft 14a along with the rear support link 5a. . Therefore, with the lifting / lowering operation of the lifting / lowering shelf 2, the buffering action by the oil damper 83a is exhibited, and the rapid movement of the lifting / lowering shelf 2 is suppressed.

  The lifting device 81 is configured as described above, and when used, the lifting device 81 can be raised and lowered because the handle 15 of the lifting shelf 2 can be grasped and pulled out forward and downward, and articles such as tableware can be taken in and out. Even if it is installed, it is easy to operate and easy to use.

  In the conventional lifting device as described above, since the front surface of the storage case is opened, dust or the like enters the lifting shelf. Moreover, since the articles | goods accommodated in the inside of a raising / lowering shelf and mechanism parts, such as a parallel support link, will be seen, it does not look good.

  Therefore, it is conceivable to provide, for example, a double-open door on the front surface of the storage case. However, in that case, it becomes necessary to open and close the door separately from the lifting operation of the lifting shelf during use, and thus the storage operation becomes difficult. .

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevating device that prevents entry of dust and the like into the storage case and facilitates the storage operation.

  In order to solve the above-mentioned object, the invention described in claim 1 is a box-shaped storage case having an open surface opened frontward, and is stored in the storage case and forward and downward via a pair of parallel support links. It is composed of an elevating shelf that can be moved freely, an upper door located above, and a lower door located below the upper door and movable in a direction overlapping the upper door, covering the open surface of the storage case and storing A door body that is openably and closably connected to the case so as to be lifted upward from below, and a moving means that moves the door body so as to open with respect to the storage case as the elevating shelf moves forward and downward. Is a lifting device.

  With this configuration, when the lower door is opened, the lifting shelf communicates with the outside, and the door body moves in the opening direction as the lifting device is pulled out.

  According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, the moving means includes an urging means for urging the door main body in the opening direction when the door main body is opened by a predetermined amount or more.

  If comprised in this way, if a door main body is opened more than predetermined amount, a door main body will be urged | biased in the opening direction.

  According to a third aspect of the present invention, in the configuration of the first or second aspect of the present invention, the biasing force in the opening direction by the biasing means is set to be smaller than the component force in the closing direction generated by the weight of the door body. The moving means includes stopper means for stopping the movement of the door body.

  If comprised in this way, the state which the door main body opened completely by the stopper means will be maintained.

  According to a fourth aspect of the present invention, in the configuration of the third aspect of the invention, when the lifting shelf is stored in the storage case with the door body fully open, the stop state by the stopper means is released, and The biasing means biases the door body in the closing direction when the door body opens below a predetermined amount.

  With this configuration, the door body can move in the closing direction when the stopper means is released as the lifting shelf is stored in the storage case, and is further closed in the closing direction when the door body is closed below a predetermined amount. Be forced.

  The invention according to claim 5 is the configuration of the invention according to any one of claims 1 to 4, wherein the elevating shelf has a handle disposed so that at least a part thereof faces the inner surface of the lower door. In addition.

  If comprised in this way, when a lower door is opened, at least one part of the handle of a raising / lowering shelf will be exposed.

  The invention according to claim 6 is the configuration of the invention according to any one of claims 1 to 5, wherein the storage case is horizontally disposed below the lifting shelf, and the interior of the storage case is divided into an upper section and a lower section. The lower door is formed so as to cover the front surface of the lower section.

  With this configuration, when the lower door is opened, the entire lower section inside the storage case is exposed.

  As described above, in the first aspect of the present invention, when the lower door is opened, the elevating shelf communicates with the outside, so that the elevating shelf is completely stored and covered with the door body until the lower door is opened. Is held, and entry of dust and the like is suppressed. In addition, after opening the lower door, the door body moves in the opening direction as the lifting device is pulled out, so there is no need to open the door body separately, making it easier to operate the lifting device during storage. Become.

  In addition to the effect of the invention described in claim 1, the invention described in claim 2 is biased in the opening direction when the door body is opened by a predetermined amount or more, so that the force required to open the door body is increased. It is reduced.

  In addition to the effect of the invention of claim 1 or 2, the invention described in claim 3 maintains the door body completely open by the stopper means. When doing, there is no need to be aware of fixing the door body, making it easier to store.

  In addition to the effect of the invention described in claim 3, the door main body automatically opens the door by its own weight because the stopper means is released when the elevator body is stored in the storage case. An elevating device that closes the main body can be configured, and a separate operation for closing the door main body is unnecessary, which is convenient. In addition, the door body is biased in the closing direction when it is closed to less than a predetermined amount, so that the closed state of the door body is stabilized and the entry of dust and the like into the storage case is further effectively suppressed. Is done.

  In addition to the effects of the invention according to any one of claims 1 to 4, the invention according to claim 5 is characterized in that at least a part of the handle of the lifting shelf is exposed when the lower door is opened. Sometimes it becomes easier to grasp the lifting shelf.

  According to the sixth aspect of the invention, in addition to the effect of the first aspect of the invention, when the lower door is opened, the entire lower section inside the storage case is exposed. Goods are easy to use because the items can be taken in and out of the lower compartment only by opening and closing the door.

  FIG. 1 is a front view showing a schematic configuration of a lifting apparatus according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II shown in FIG. 1, and FIG. It is sectional drawing of the III-III line shown in FIG.

  With reference to these drawings, the lifting device 1 is mainly composed of a storage case 3, a lifting shelf 2 stored in the storage case 3, and a sliding door structure 19 that covers the front surface of the storage case 3. Yes.

  The storage case 3 has a box shape with an open front surface, and the pair of support plates 9a and 9b has an arcuate shape in which the edge portion on the front side protrudes from the center portion in a side view. Is formed. Inside the storage case 3, a shelf plate 8 is attached so as to bridge the inner surfaces of the support plates 9 a and 9 b in the horizontal direction, and the internal space is divided into an upper section 88 and a lower section 89. . A pair of mechanism boxes 10 a and 10 b are fixed to the upper section 88 in contact with the inner surfaces of the support plates 9 a and 9 b and the upper surface of the shelf plate 8. These mechanism boxes 10a and 10b are attached to reduce the force required to store the lifting rack 2 and to buffer the rapid movement of the lifting rack 2, as in the conventional example shown in FIGS. It is what.

  The elevating shelf 2 has a box shape with an open front surface, is stored in an upper section 88 inside the storage case 3, and is connected to the storage case 3 through a pair of parallel support links. The upper end portion of the front support link 4a disposed on the left side portion of the elevating device 1 is rotatably attached to the side plate 44a of the elevating shelf 2 via the shaft 11a, and the lower end portion thereof is inserted into the mechanism box 10a. The rotation shaft 13a is fixed. A substantially sickle-shaped interlocking block 21 is fixed to the inner surface of the support plate 9a of the front support link 4a. This pushes the moving means of the door opening / closing mechanism 20 described later forward. Is for. Further, the upper end portion of the rear support link 5a is rotatably attached to the side plate 44a of the elevating shelf 2 via the shaft 12a, and the lower portion thereof is fixed to the rotating shaft 14a inserted through the mechanism box 10a. ing.

  The right side portion of the lifting device 1 is configured in the same manner, and the upper ends of the front support link 4b and the rear support link 5b are rotatably attached to the side plate 44b of the lift shelf 2 via the shafts 11b and 12b. These lower portions are respectively fixed to rotating shafts 13b and 14b inserted into the mechanism box 10b.

  Since the elevating shelf 2 and the storage case 3 are connected in this way, the elevating shelf 2 can be moved out of the upper section 88 of the storage case 3 forward and downward while being held in a horizontal state.

  A handle 15 is attached to the front of the elevating shelf 2 so as to protrude into the lower section 89 when viewed from the front. This handle 15 is attached in order to make it easy to grasp the lifting shelf 2 during use.

  The slide door structure 19 includes an upper door 6 that covers the upper section 88 of the storage case 3 and a lower door 7 that covers the lower section 89. Each of the upper door 6 and the lower door 7 has a cross section in a plane parallel to the support plates 9a and 9b formed in an arc shape along the front edge of the support plates 9a and 9b. It has a part of shape. After sliding the lower door 7 so as to overlap the upper door 6, the slide door structure 19 is lifted upward from below around the hinge 42 with the upper door 6 and the lower door 7 being integrated. The details of this point will be described later.

  Further, door opening / closing mechanisms 20a and 20b are attached to the inner surfaces of the support plates 9a and 9b of the storage case 3, respectively. These door opening and closing mechanisms 20a and 20b are attached to open and close the sliding door structure 19 in conjunction with the raising and lowering of the lifting shelf 2, and this point will also be described in detail later.

  A long hole 17 is formed in the side panel 53 of the mechanism box 10a. The long hole 17 is a buffering means such as an oil damper attached to the lower end of the rear support link 5a and the mechanism box 10a. The damper mounting shaft 18 is connected to the rear support link 5a so that it can move as the rear support link 5a rotates. Further, the stopper 16 is fixed on the side panel 53, and this is for stopping the movement of the rear support link 5a when the lifting shelf 2 is stored and pulled out.

  First, the configuration and operation of the sliding door structure that covers the front surface of the lifting device will be described.

  FIG. 4 is a partially broken view showing a schematic configuration of the sliding door structure in the lifting apparatus according to the first embodiment of the present invention, and FIG. 5 is an end view of the VV line shown in FIG. FIG. 6 is a cross-sectional view taken along the line VI-VI shown in FIG.

  With reference to these drawings, the sliding door structure 19 includes an upper door 6 that covers the upper compartment of the storage case 3, and a lower door 7 that can slide to a position that covers the lower compartment of the storage case 3 and covers the upper compartment. And a biasing means for biasing the lower door 7.

  The upper door 6 mainly includes a pair of frames 57a and 57b extending in an arc shape along the front edge of each of the support plates 9a and 9b of the storage case 3, and a panel 56 fixed to the frames 57a and 57b. It is configured. Since the upper door 6 is configured symmetrically, only the left side portion will be described here.

  The frame body 57a disposed at a position along the support plate 9a of the storage case 3 has a substantially U-shaped cross section, and the U-shaped open portion faces the other frame body 57b. Has been placed. The U-shaped interior of the frame body 57a is further partitioned to form a rail portion 60 located on the front edge side of the support plate 9a in a cross section and a support portion 58 located on the outer side of the rail portion 60. . The support portion 58 includes a pair of support plates 59a and 59b facing each other, and a panel 56 is attached between the support plates 59a and 59b with an end portion in the width direction interposed therebetween. In addition, the space | interval of the rail part 60 is set a little larger than the thickness of the edge part 85a of the lower door 7 mentioned later.

  The upper door 6 configured in this manner is attached to the storage case 3 so as to be opened and closed so that the upper door 6 can be lifted upward from below with the hinge 42 as the center. Further, a door fitting 41 is attached to the back surface of the upper door 6, and a portion of the door fitting 41 that is separated from the hinge 42 by a predetermined distance and an interlocking arm 33 of the door opening / closing mechanism 20 to be described later rotate via a pin 25. It is installed freely.

  The lower door 7 is formed of a panel 61 having a vertical cross section formed in an arc shape along the front end edges of the support plates 9a and 9b, and having a part of the shape of the cylindrical side wall as a whole. On both surfaces within a predetermined range from the left edge of the panel 61, strip-shaped reinforcing plates 62a and 62b extending vertically are attached to form edge portions 85a. A reinforcing plate is similarly attached to the right side of the panel 61 to form an edge portion 85b.

  The lower door 7 configured as described above is supported by the frame body 57a so that the edge portion 85a of the lower door 7 is slidable inside the rail portion 60 formed inside the frame body 57a of the upper door 6. ing. Similarly, the other end edge portion 85b is supported by the frame body 57b. Therefore, the lower door 7 can be slidably moved in a space between the frame bodies 57a and 57b in a state where the end edge portions 85a and 85b are along the arc shape of the frame bodies 57a and 57b. At this time, since the entire panel 61 of the lower door 7 is formed in a shape of a part of the cylindrical side wall, the shape of the lower door 7 and the movement trajectory coincide with each other, and the appearance is neat. Further, since the entire panel 61 is formed in the shape of a part of the cylindrical side wall, the arc shape of the pair of end edges can be used as it is as the end edge portions 85a and 85b, and the configuration of the lower door 7 is simple. It has become.

  In addition, rails 65a and 65b having a U-shaped section are fixed to substantially lower halves (portions substantially corresponding to the lower section) of the front end edges of the support plates 9a and 9b of the storage case 3, respectively. Yes. The rails 65a and 65b are formed so that the inside of each U-shaped portion of the cross section forms an arc shape that is continuous with the rail portions inside the frames 57a and 57b. Therefore, the edge portions 85a and 85b of the lower door 7 can be slidably moved continuously inside the rail portions of the frames 57a and 57b of the upper door 6 and inside the rails 65a and 65b. It is. That is, the lower door 7 is guided by the frames 57a and 57b and the rails 65a and 65b, and covers the upper compartment of the storage case 3 (the position on the back side of the panel 56 of the upper door 6) and the lower compartment. It is possible to move up and down along the front edge of the support plates 9a and 9b between the positions covering the front surface.

  Further, an urging means for urging the lower door 7 is formed in the upper portion of the upper door 6 inside the elongated box-shaped frame 66. This urging means is configured around a rotating shaft 68 arranged so as to bridge the frames 57a and 57b, and a pair of winding drums 67a and 67b are fixed to both ends of the rotating shaft 68. Has been. Wires 69a and 69b are wound around the winding drums 67a and 67b, respectively, so as to be freely drawn out. One end of each of the wires 69 a and 69 b is fixed to the winding drums 67 a and 67 b, and the other end is connected to both end positions of the upper portion of the lower door 7. Further, a coil spring 70 is attached to a substantially central portion of the rotation shaft 68 so as to surround the rotation shaft 68. One end portion 72 a of the coil spring 70 is fixed to the rotating shaft 68 while penetrating the rotating shaft 68, and the other end portion 72 b is fixed to the frame body 66 via the spring block 71. The winding direction of the coil spring 70 is set so as to urge the rotating shaft 68 in a direction opposite to the rotating direction of the rotating shaft 68 generated by pulling the wires 69a and 69b from the winding drums 67a and 67b. Has been.

  Since the urging means is configured in this way, the lower door 7 is moved to a position covering the space sandwiched between the frame bodies 57a and 57b, that is, the upper section of the storage case 3, via the wires 69a and 69b. It is energized towards. When the pull-out amounts of the wires 69a and 69b increase, the torsion of the coil spring 70 increases, so that the urging force by the urging means increases as the lower door 7 moves away from the frame bodies 57a and 57b. Therefore, the force required to move the lower door 7 upward is efficiently reduced according to the pull-out distance of the lower door 7 from the frames 57a and 57b.

  FIG. 7 is an enlarged view of the “Y” portion shown in FIG.

  With reference to the drawing, an attachment member 74 is attached to the lower door 7 with a predetermined portion sandwiched from the lower edge of the panel 61. On the back side (right side in the figure) of the mounting member 74, a groove 80 having a rectangular cross section is formed at a position along the lower edge of the panel 61, and a groove 90 having a substantially circular cross section is formed at a position along the groove 80. In the cross section, it is formed so as to be aligned vertically with the lower end of the panel and the groove 80. An elastic body 75 made of a material that exerts an elastic force by compression, such as foaming urethane or rubber, is attached to the inside of the upper groove 80. The elastic body 75 is for urging the handle member 63 attached via the groove 90 on the lower side around the shaft portion 76, which will be described later.

  The handle member 63 is made of, for example, an extruded product of aluminum alloy, and includes a shaft portion 76, a projection portion 86, an engagement portion 73, and a handle portion 87. The shaft portion 76 is formed in a substantially circular shape having a slightly smaller diameter than the groove 90 of the attachment member 74, and is attached in a state of being fitted in the groove 90 of the attachment member 74. The projecting portion 86 extends from the shaft portion 76 toward the upper groove 80, and the upper end portion thereof is disposed so as to always come into contact with the elastic body 75 fixed inside the groove 80. The engaging portion 73 is disposed so as to extend from the shaft portion 76 to the back side of the lower door 7 and is formed so as to be freely engageable with an engaging piece 64 that is flexibly attached to the frame body 57 a of the upper door 6. Has been. Further, the handle portion 87 is disposed so as to extend forward from the shaft portion 76 under the attachment member 74. The handle member 63 configured in this manner has a position approaching the upper door 6 (position indicated by a solid line in the figure) and a position away from the upper door 6 (position indicated by a two-dot chain line in the figure) with the shaft portion 76 as a center. ). At this time, when the handle member 63 is moved from the position indicated by the solid line toward the position indicated by the two-dot chain line, the elastic body 75 is compressed by the projection 86 and exerts an elastic force. It is urged to return to the position indicated by.

  Here, the engagement and release states of the stopper mechanism of the sliding door structure will be described.

  When the handle member 63 is in the position indicated by the solid line in the figure, the engaging portion 73 of the handle member 63 and the engaging piece 64 of the upper door 6 are engaged. As a result, the lower door 7 is fixed to the upper door 6 and the downward movement of the lower door 7 is stopped.

  When pulling the lower door 7 downward from the upper door 6 from this state, the handle 87 is moved in the direction of movement of the lower door 7 (downward in the figure) against the urging force of the elastic body 75. Move to the position. Then, since the engagement between the engagement portion 73 and the engagement piece 64 of the upper door 6 is released, the fixed state of the entire lower door 7 with respect to the upper door 6 is released, and the lower door 7 is slid downward. Is possible.

  On the other hand, when the lower door 7 is slid downward, when the lower door 7 is fixed to the upper door 6, the handle 87 of the lower door 7 is held and slid into the upper door 6. Then, after the front end of the engaging portion 73 and the engaging piece 64 of the upper door 6 come into contact with each other, the engaging piece 64 once bends to the back side, and finally engages with the engaging portion 73 as shown in the figure. The combined piece 64 is engaged. This completes the fixing of the lower door 7 to the upper door 6.

  As described above, when releasing the fixing of the lower door 7 to the upper door 6, it is possible to release the engagement state of the stopper mechanism and the lower door 7 simply by holding the handle member 63 and moving the lower door 7 in the pulling direction. It is possible to perform continuously without being conscious of the slide, and it is easy to use. Further, when the lower door 7 is fixed, the stopper mechanism is engaged only by sliding the lower door 7 to the upper door 6 side, so that the lower door 7 can be easily fixed and the lower door 7 is fixed. Is also stable. In addition, after fixing the lower door 7 to the upper door 6, the upper door 6, the lower door, and 7 are united and can be opened and closed centering on the upper side part of the upper door 6. FIG.

  FIG. 8 is a schematic diagram showing the relationship between the door and the urging force in the sliding door structure of the lifting apparatus according to the first embodiment of the present invention, and FIG. 9 is “Z” shown in FIG. It is an enlarged view of a part.

  With reference to these figures, the advantage by the cross section of the lower door 7 and the frame 57a being formed in circular arc shape is demonstrated.

  First, referring to (1) of FIG. 8, when both the cross section of the lower door 7 and the frame 57a in the moving direction of the lower door 7 is formed in an arc shape, the urging force by the urging means is the wire 69a. The direction of the urging force (linear direction) and the direction of movement of the lower door 7 (direction along the arc) are always inconsistent with each other.

At this time, as shown in FIG. 9, the urging force applied to the lower door 7 through the wire 69a is F. Then, the urging force F can be decomposed into _a component force F _{a in} the moving direction of the lower door 7 and a component force F _{b in} a direction orthogonal to the moving direction of the lower door 7. Since the lower door 7 is being pressed into the frame 57a by a component force F _b, at the time of stop of the lower door 7 is provided between the edge portion 85a and the frame 57a of the lower door 7 according to the component force F _b A large amount of static friction force is generated. That is, since this static frictional force acts as a resistance against the urging force by the urging means, if the static frictional force is set to be larger than the urging force, the lower door 7 resists the urging force via the wire 69a. Thus, it is possible to stop in the state of sliding downward.

  On the other hand, referring back to (2) in FIG. 8, when both the lower door 7 and the frame body 57a are formed in a straight line, the direction of the urging force (straight line) applied to the lower door 7 in the arrow direction via the wire 69a. Direction) and the movement direction (linear direction) of the lower door 7 are parallel to each other. At this time, since the component force of the urging force is not applied in the direction in which the lower door 7 is pressed against the frame body 57a, the resistance to the urging force is different from the case shown in FIGS. 7 does not occur. Therefore, it is difficult to stop the lower door 7 against the urging force.

  Thus, by forming the cross section of the lower door 7 and the frame body 57a in the moving direction of the lower door 7 in an arc shape, a resistance that stops the movement of the lower door 7 due to the generated static friction force is generated. Can be granted. Therefore, when the lower door 7 moves to the upper door 6 side, the force required for the movement is reduced by the urging force of the urging means, and the movement of the lower door 7 becomes easy. When the lower door 7 stops, the urging force However, the lower door 7 can be stably stopped.

Moreover, since the resistance given to the lower door 7 changes according to the magnitude of the component force (F _b in FIG. 9) in the direction orthogonal to the moving direction of the lower door 7, the resistance of the lower door 7 and the frame 57a is changed. The magnitude of the resistance can be adjusted based on the correlation such as the curvature, the smoothness of these contact surfaces, and the extending direction of the wire 69a.

  Further, a pair of edge portions are formed at both end edges in the width direction of the lower door 7 so that the entire edge portions can be slidably moved inside the pair of frames of the upper door 6. It is configured. For this reason, regardless of the position of the lower door 7 with respect to the upper door 6, the edge of the lower door 7 and the frame of the upper door 6 can be in contact with each other. At this time, in any part where the lower door 7 and the upper door 6 are in contact, the moving direction of the lower door 7 (the direction along the arc) and the direction of the urging force via the wire (the linear direction) are inconsistent. Become. Therefore, regardless of the position, the lower door 7 is applied with a component force in a direction orthogonal to the moving direction, and a resistance corresponding to the component force is applied. Therefore, the lower door can be stopped at a desired position. It becomes possible. Moreover, since resistance is provided to the lower door 7 in a balanced manner at both edge portions in the width direction, the stopped state of the lower door 7 is more stably exhibited.

  Next, the structure of the door opening / closing mechanism attached to the inside of the lifting device will be described in detail.

  10 is a diagram showing a schematic configuration of a door opening / closing mechanism in the lifting apparatus according to the first embodiment of the present invention, and FIG. 11 is a sectional view taken along line XI-XI shown in FIG. 12 is a cross-sectional view taken along line XII-XII shown in FIG. Since the door opening / closing mechanism is configured symmetrically with respect to each of the pair of support plates of the storage case, only the door opening / closing mechanism 20a configured on the inner surface of the left support plate 9a will be described here.

  With reference to these drawings, the door opening / closing mechanism 20 a is disposed around the mounting plate 22 fixed on the inner surface of the support plate 9 a of the storage case 3. The door opening / closing mechanism 20a is mainly composed of an interlocking arm 33 and an operating arm 34 constituting a moving means, a spiral spring 35 for biasing the moving means, and a stopper mechanism 45 for stopping the moving means. ing. Hereinafter, the configuration of each of these parts will be described.

  One end of the interlocking arm 33 constituting the moving means is pivotally attached via a pin 25 to a door fitting 41 disposed at a predetermined distance from the hinge 42, and the other end thereof is The upper door 6 is arranged so as to extend rearward and downward in a completely closed state. On the other hand, the operating arm 34 that constitutes a moving means together with the interlocking arm 33 is pivotally connected to the other end of the interlocking arm 33 via the pin 26 and extends rearward and upward, and is attached to the mounting plate 22 via the pin 27. Is pivotally attached to the. A roller 40 is attached to the pin 26 at the connection portion between the interlocking arm 33 and the operating arm 34. The roller 40 is a portion where the moving means including the interlocking arm 33 and the operating arm 34 receives external force from the interlocking block 21 fixed to the front support link 4a, and the position in the direction orthogonal to the support plate 9a is It is set to be included in the movement range of the interlocking block 21 accompanying the movement of the support link 4a. A notch 78 is formed at the rear end of the operating arm 34, and is provided to engage with a stopper mechanism 45 described later. The relationship with the stopper mechanism 45 will be described later.

  The spiral spring 35 constitutes an urging means together with the spring swing arm 36, and is arranged on the rear side of the operating arm 34. The outer end of the spiral spring 35 is attached to the rear end of the actuating arm 34 via a pin 28, and the inner end thereof is fixed to the shaft 52 at the lower end of the spring swing arm 39. . The upper end of the spring swing arm 39 is rotatably attached to the attachment plate 22 via a pin 29, and can move integrally with the spiral spring 35 around the pin 29. .

  The stopper mechanism 45 includes a stopper plate 37 and a stopper arm 38, and is disposed on the rear side of the operating arm 34. The lower end of the stopper plate 37 is rotatably attached to the mounting plate 22 via the pin 32, and is biased counterclockwise (in the direction of the operating arm 34) in the drawing by the torsion spring 43 around the pin 32. Has been. At the front edge portion of the stopper plate 37, a hook-like engagement portion 46 bent forward is formed, for example, by bending.

  The front end portion of the stopper arm 38 is pivotally connected to the upper end portion of the stopper plate 37 via a pin 31 and is arranged in a substantially horizontal direction so as to extend rearward. A roller 39 is rotatably attached to the rear end portion of the stopper arm 38. The attachment position of the roller 39 in the direction orthogonal to the support plate 9a is set to be a position included in the movement range of the rear support link 5a. Therefore, the roller 39 can come into contact with the rear edge 54 of the rear support link 5a in the process in which the rear support link 5a moves to the position indicated by the two-dot chain line shown in the drawing when the lifting shelf is stored. The stopper arm 38 is formed with a long hole 48 extending in a direction parallel to the axial direction thereof, and the stopper arm 38 is attached to the mounting plate 22 via a pin 30 penetrating the long hole 48. . Since the dimension of the long hole 48 in the width direction is set slightly larger than the diameter of the pin 30, the stopper arm 38 and the roller 39 are slidable back and forth with the pin 30 along the inside of the long hole 48. It is possible to move.

  An oil damper 23 is attached to the front upper portion of the attachment plate 22. The front end of the oil damper 23 is pivotally attached to the mounting plate 22 via a pin 24, and the rear end thereof is pivotally attached to the rear end of the operating arm 34 via a pin 28. . The oil damper 23 is attached to buffer the movement of the operating arm 34.

  Next, the operation of each part of the door opening / closing mechanism described above will be described in detail.

  FIG. 13 is a schematic view showing the door opening / closing process by the door opening / closing mechanism in the lifting apparatus according to the first embodiment of the present invention. In this figure, the lower door is already movable with the upper door, and the description of the lower door is omitted.

  Referring to the figure, when the upper door 6 is completely closed, the front support link 4a, the interlocking arm 33, and the operating arm 34 are in the positions indicated by the solid lines in the figure. When the front support link 4a moves in the direction of the arrow in the drawing as the lifting shelf is pulled out from this state, the outer peripheral wall 55 of the interlocking block 21 fixed to the front support link 4a and the roller 40 of the interlocking arm 33 are connected. Abut. As the front support link 4a moves in the direction of the arrow to the position indicated by the broken line in the figure, the roller 40 moves so as to be pushed upward and forward while rolling on the outer peripheral wall 55 of the interlocking block 21. At this time, the operation arm 34 rotates clockwise around the pin 27 and moves to a position indicated by a broken line. Further, the interlocking arm 33 moves to the position indicated by the broken line while opening the upper door 6 so as to push up the upper door 6 in the direction of the arrow from below to above. As a result, the upper door 6 moves to a position indicated by a broken line and is in a state where it is opened by a predetermined amount.

  When the interlocking block 21 further moves to the position indicated by the two-dot chain line in the drawing as the lifting shelf is further pulled out, the roller 40 also moves forward and upward while rolling on the outer peripheral wall 55 of the interlocking block 21 to near its tip. Move to be pushed up. At this time, the operating arm 34 moves to the position indicated by the two-dot chain line around the pin 27, and the interlocking arm 33 moves to the position of the two-dot chain line while further pushing the upper door 6 in the direction of the arrow. As a result, the upper door 6 moves to the position indicated by the two-dot chain line, and is fully open.

  The oil damper 23 attached so as to connect the mounting plate (not shown) and the operating arm 34 is indicated by a solid line in the figure as the rear end of the operating arm 34 moves around the pin 27. It moves while extending between the position and the position indicated by the two-dot chain line in the figure, and the movement of the operating arm 34 is buffered. For this reason, the rapid movement of the upper door 6 associated with the drawer of the lifting shelf is suppressed.

  FIG. 14 is a schematic view showing the state of the urging means of the door opening / closing mechanism in the lifting apparatus according to the first embodiment of the present invention, and shows the relationship between the urging means and the moving means. is there. In the figure, (1) shows a state in which the upper door is completely closed (corresponding to the position of the solid line in FIG. 13), and (2) shows a state in which the upper door is opened by a predetermined amount (indicated by the broken line in FIG. (Corresponding to the position), and (3) shows a state where the upper door is fully opened exceeding a predetermined amount (corresponding to the position of the two-dot chain line in FIG. 13).

  Referring to FIG. 14 together with FIG. 13 shown above, when the lifting shelf is completely stored and the upper door is completely closed, as shown in (1) of FIG. The attachment position of the spiral spring 35 is set so that the force is applied to the operating arm 34 in the direction of the arrow 77. At this time, the operating arm 34 receives a biasing force in the direction of the arrow 77 and is biased counterclockwise around the pin 27. When the lifting shelf is pulled out from this state, the operating arm 34 moves clockwise around the pin 27 against the urging force of the spiral spring 35. At this time, as the outer end portion 50 of the spiral spring 35 moves, the spiral spring 35 and the spring swing arm 36 move together and move counterclockwise around the pin 29 in the drawing. When the upper door 6 reaches a state where it is opened by a predetermined amount (position indicated by a broken line in FIG. 13), the operating arm 34 and the spiral spring 35 are in the positional relationship shown in (2) in FIG.

  Thus, when the position of the operation arm 34 is between the position (1) in FIG. 14 and the position (2) in FIG. 14, the operation arm 34 is moved by the spiral spring 35 (1) in FIG. It is urged to the position of. That is, when the upper door 6 is in a range from a completely closed state to a state where the upper door 6 is opened by a predetermined amount, the upper door 6 is biased in the closing direction via the operating arm 34 and the interlocking arm 33. For this reason, when the upper door 6 is moved to a closed state from a predetermined amount, the upper door 6 is moved to a completely closed state by the urging force of the spiral spring 35. Further, even after the upper door 6 is closed, the closed state is stably maintained.

  Referring to (2) of FIG. 14, the biasing force by the spiral spring 35 in this positional relationship is applied in the direction indicated by the arrow 77 in the drawing, that is, the direction toward the pin 27 of the operating arm 34. Therefore, the operating arm 34 is not biased in any rotation direction around the pin 27 and is in a neutral state. Therefore, the upper door 6 is not urged in any direction from the position indicated by the broken line in FIG.

  When the lifting shelf is further pulled out from the state shown in (2) of FIG. 14 and the operating arm 34 rotates around the pin 27 in the clockwise direction in the drawing, the spiral spring 35 and the spring swing arm 36 have the outer end 50. As shown in FIG. 14, the pin 29 is moved counterclockwise around the pin 29, and the positional relationship shown in FIG. In this process, the urging force by the spiral spring 35 is applied in the same direction as the arrow 77 in FIG. 14 (3), so that the operating arm 34 is urged clockwise around the pin 27 in the drawing.

  Thus, when the position of the operating arm 34 is between the position (2) in FIG. 14 and the position (3) in FIG. 14, the operating arm 34 is attached to the position (3) in FIG. It is energized. That is, when the upper door 6 is in a range from a state where the upper door 6 is opened by a predetermined amount to a state where the upper door 6 is completely closed, the upper door 6 is biased in the opening direction via the operation arm 34. For this reason, after opening the upper door 6 beyond a predetermined amount, the force required to move the door further in the opening direction is reduced, and the operation of opening the upper door 6 becomes easy.

  Further, the magnitude of the urging force by the spiral spring 35 in this range is set to be smaller than the component force in the closing direction generated by the weight of the sliding door structure 19. Therefore, when the external force applied to the upper door 6 when the upper door 6 is opened beyond a predetermined amount (for example, forward pressing by the interlocking block 21) is removed, the sliding door structure 19 is generated by its own weight. Move in the closing direction according to the force. Thereby, it becomes possible to comprise so that the upper door 6 may be closed automatically, and it becomes easier to open and close the upper door 6. FIG.

  As described above, the urging direction of the spiral spring 35 against the operating arm 34 changes according to the position of the operating arm 34 with the neutral state shown in (2) of FIG. Therefore, the position where the direction of the urging force with respect to the upper door 6 changes (the position where the upper door 6 is opened by a predetermined amount) can be set around the operating arm 34, and the weight of the upper door 6 or the position where the upper door 6 is fully opened. The urging direction with respect to the upper door 6 can be easily adjusted according to the above.

  FIG. 15 is a schematic view showing a process in which the stopper means of the door opening / closing mechanism is engaged or released in the lifting apparatus according to the first embodiment of the present invention. In the figure, (1) shows the process of engagement between the operating arm and the stopper mechanism, (2) shows the engaged state between the operating arm and the stopper mechanism, and (3) shows the result of the stopper mechanism. The process of releasing the engagement is shown.

  First, the engagement between the stopper mechanism 45 and the operating arm 34 will be described. Referring to (1) of FIG. 15, in a state where the lifting shelf is stored in the storage case, the stopper mechanism 45, the rear support link 5a, and the operating arm 34 are in the positions indicated by the solid lines in the figure. As described above, the stopper plate 37 is urged counterclockwise in the figure by the torsion spring 43 around the pin 32, but the roller 39 and the rear edge 54 of the rear support link 5a come into contact with each other. The stopper arm 38 and the stopper plate 37 are prevented from moving forward.

  From this state, when the rear support link 5a moves in the direction of the arrow as the lifting shelf is pulled out, the roller 39 simultaneously rolls along the rear edge of the rear support link 5a and moves forward according to the biasing force of the torsion spring 43. Move to. Further, as described above, upon receiving a pressure from the front support link, the operating arm 34 simultaneously rotates around the pin 27 in the clockwise direction in the figure. When the rear support link 5a moves to the position indicated by the broken line in the figure, the stopper arm 38 and the stopper plate 37 move to the position indicated by the two-dot chain line by the urging force of the torsion spring 43, and the end of the long hole 48 is moved. When 49 and the pin 30 contact | abut, the slide to the front stops.

  When the lifting shelf is further pulled out, the operating arm 34 moves around the pin 27 to the position shown by the two-dot chain line in the figure, and the oblique side 79 formed at the rear end of the operating arm 34 and the two-dot chain line already exist. The engaging portion 46 of the stopper plate 37 in position comes into contact. When the lifting shelf is further pulled out from this state, the operating arm 34 moves in the direction of the arrow about the pin 27 while pushing the stopper plate backward (in the direction toward the position indicated by the solid line).

  Finally, when the upper door is completely opened and the operating arm 34 reaches the position shown in FIG. 15 (2), the engaging portion 46 is once detached rearward from the oblique side portion 79, and then the torsion spring 43. With the urging force, the position again returns to the position indicated by the solid line, and engages with the notch 78 of the operating arm 34. At this time, the movement of the upper door completely stops in a state where the upper door is completely opened, and thus the upper door is not closed by its own weight.

  Next, release of the stopper mechanism 45 will be described. Referring to (3) of FIG. 15, when the rear support link 5a moves to the position indicated by the broken line in the drawing along with the storage of the lifting shelf, the rear end edge 54 of the rear support link and the roller 39 come into contact with each other. As the rear support link 5a moves in the direction of the arrow to the position indicated by the two-dot chain line, the roller 39 moves to the position indicated by the two-dot chain line while rolling on the rear edge 54 of the rear support link 5a. Then, the stopper plate 37 connected to the stopper arm 38 also moves to the position indicated by the two-dot chain line against the urging force of the torsion spring 43, so that the engaging portion 46 of the stopper plate 37 is notched on the operating arm 34. It will be in the state which removed from 78. As a result, the operating arm 34 can move in the direction indicated by the arrow, so that the stopped state of the upper door is released. And after a stop state is cancelled | released, it becomes possible to move an upper door to the direction closed by the dead weight.

  As described above, the stopper mechanism 45 is configured so that the upper door is fixed when the upper door is completely opened, and the fixed state of the upper door is released as the elevating shelf is stored in the storage case. Has been. Therefore, the fixed state of the upper door can be automatically switched only by the raising / lowering operation of the lifting / lowering shelf, and it becomes unnecessary to be aware of fixing and releasing the upper door at the time of use, thereby improving the usability.

  Below, the whole raising / lowering apparatus provided with the slide door structure and door opening / closing mechanism mentioned above is demonstrated in detail.

  FIG. 16 is a cross-sectional view schematically showing the lifting process of the lifting shelf in the lifting apparatus according to the first embodiment of the present invention, and FIG. 17 is the lifting process in the lifting apparatus according to the first embodiment of the present invention. It is sectional drawing which showed the outline of the raising / lowering process of a shelf, Comprising: The part following FIG. 16 is shown. These drawings correspond to FIG. 3 described above.

  First, referring to (1) of FIG. 16, the lifting shelf 2 is stored in the upper section 88 of the storage case 3, and the lower door 7 is closed so as to cover the lower section 89 of the storage case 3. As described above, when the lifting device 1 is not used, the entire front surface of the storage case 3 is covered by the upper door 6 and the lower door 7, so that dust and the like can be prevented from entering the lifting shelf 2. Yes, and the appearance when stored will be neat.

  In order to use the lifting shelf 2 from this state, first, the lower door 7 is slid in the direction of the arrow. As described above, since the lower door 7 is urged upward by the urging means (not shown) of the slide door structure 19, the force required to lift the lower door 7 is reduced. After the lower door 7 is once moved to the position indicated by the two-dot chain line, the lower door 7 is fixed to the upper door 6 by the stopper mechanism of the slide door structure 19 described above, and the fixed state is stably maintained. Therefore, the lower door 7 does not descend due to its own weight, and subsequent operations and storage operations are facilitated. Further, the handle 15 of the lifting shelf 2 is configured to project from the position facing the inner surface of the lower door 7, that is, from the upper section 88 of the storage case 3 to the lower section 89 through the front of the shelf plate 8. Has been. Therefore, as soon as the lower door 7 is opened, the handle 15 is exposed and it becomes easy to grasp a part of the lifting shelf 2, so that the lifting operation of the lifting shelf 2 can be performed quickly. Further, the lifting device 1 is configured such that the lower section 89 of the storage case 3 can be positively used as a storage space independent of the lifting shelf 2. In the elevating device 1 according to this embodiment, even when only the lower section 89 is used, it is possible to put in and out the stored objects only by opening and closing the lower door 7 without pulling out the elevating shelf 2, so that it is easy to use. . When the lower door 7 is opened, the upper door 6 is biased in the closing direction by the door opening / closing mechanism 20a, so that the closed state of the upper door 6 is stably maintained.

  Next, when the lower door 7 is moved from the fully open state with the handle 15 so as to pull the lifting shelf 2 forward and downward, the moving means of the door opening / closing mechanism 20a described above (2) in FIG. As shown in FIG. 4, the upper door 6 is in a state of being opened by a predetermined amount. In this drawing process, the upper door 6 is biased in the closing direction by the spiral spring 35 via the interlocking arm 33 and the operating arm 34. However, when the upper door 6 is opened by a predetermined amount, the spiral spring 35 is in a neutral state. Thus, the upper door 6 is not biased in any direction by the spiral spring 35.

  Further, when the elevating shelf 2 is pulled out forward and downward with the handle 15, the upper door 6 is completely opened by the door opening / closing mechanism 20 a as shown in FIG. 17 (1). As described above, the upper door 6 can be opened to the fully opened state simply by opening the lower door 7 and moving the lifting shelf 2, so that the lifting and lowering operation and the storage work of the lifting shelf 2 are easier. When the upper door 6 is opened beyond a predetermined amount, the upper door 6 is biased in the opening direction by the spiral spring 35 via the operating arm 34 and the interlocking arm 33. Therefore, since the force required to open the upper door 6 and the lower door 7 is reduced, the pull-out operation of the lift shelf 2 can be easily performed even when the pull-out of the lift shelf 2 and the opening / closing of the upper door 6 are interlocked. It is easy to use. The urging force by the spiral spring 35 is set so as to be smaller than the component force in the closing direction caused by the weight of the upper door 6 and the lower door 7. 6 will never open.

  When the upper door 6 is in a fully opened state, the operation arm 34 is fixed by the stopper mechanism 45 of the door opening / closing mechanism 20a, so that the movement of the upper door 6 and the lower door 7 is stopped at the fully opened position. . Thus, the upper door 6 is automatically fixed by the door opening / closing mechanism 20 a as the lifting shelf 2 is pulled out. In addition, once the upper door 6 is completely opened, the fixed state is maintained until the storage stage of the lifting shelf, which will be described later, so that the lifting operation of the lifting shelf 2 and the lifting shelf 2 can be performed without being aware of the upper door 6. It becomes possible to take in and out the stored items.

  Next, the lifting shelf 2 is moved so as to be pulled out to a position in front of the lower section 89 of the storage case 3 in order to put in and out the items to be stored in the lifting shelf 2. When the storage in the lifting shelf 2 is completed, the lifting shelf 2 is now lifted and stored in the upper section 88 of the storage case 3. In this storing process, the force required to store the elevating shelf 2 is reduced by the urging means stored in the mechanism box 10a as in the conventional example shown in FIGS. Further, when the elevating shelf 2 is moved up and down, the rapid movement is suppressed by the buffer means stored in the mechanism box 10a as in the conventional example.

  When the elevating shelf 2 is completely stored in the upper section 88, the roller 39 and the stopper arm 38 are slid rearward by the rear edge 54 of the rear support link 5a as shown in FIG. . Thereby, the engagement between the stopper plate 37 and the operating arm 34 is released, and the upper door 6 becomes movable. At this time, the upper door 6 is attached in the opening direction between the state in which the upper door 6 is completely opened (position indicated by a solid line in the drawing) and the state in which the upper door 6 is opened by a predetermined amount (position indicated by the broken line in the drawing). However, the urging force by the spiral spring 35 is set smaller than the component force in the closing direction generated by the weight of the upper door 6 and the lower door 7 as described above. Therefore, the upper door 6 and the lower door 7 move to the position indicated by the broken line in the closing direction by their own weight against the urging force of the spiral spring 35 in the direction of opening the upper door 6. At this time, since the movement of the operation arm 34 is buffered by the oil damper 23, the upper door 6 and the lower door 7 move slowly to the positions indicated by broken lines.

  When the upper door 6 and the lower door 7 are moved further in the closing direction than the state in which the upper door 6 and the lower door 7 are opened by a predetermined amount (the position indicated by the broken line in the drawing), in addition to the component force in the closing direction by the own weight, The urging force in the closing direction is applied to the upper door 6. Therefore, the upper door 6 and the lower door 7 move in the direction of automatically closing from the position indicated by the broken line in (2) of FIG. 17 to the position indicated by the two-dot chain line. At this time, the upper door 6 and the lower door 7 are slowly moved to a position indicated by a two-dot chain line because they are buffered by the oil damper 23.

  As described above, when the lifting shelf is completely stored in the storage case, the stopper means is released and the upper door 6 is automatically and slowly closed. Therefore, an operation for separately closing the upper door 6 is not required, which is convenient. In addition, even after the upper door 6 has moved to the position of the two-dot chain line, the upper door 6 is biased in the closing direction by the spiral spring 35, so that the state in which the upper door 6 exactly covers the upper section 88 is stabilized.

  And if the lower door 7 is slid to the lowest end, as mentioned above, the lower door 7 will stop stably in the state which covered the lower division 89. As a result, the entire front surface of the storage case 3 is again covered.

  The elevating device 1 is configured as described above, and the sliding door structure 19 prevents entry of dust and the like into the storage case 3 and allows the door to be easily opened and closed only by taking in and out the elevating shelf 2. Since it becomes possible, the operation at the time of use is easy and the usability is improved.

  In addition, in the slide door structure of the lifting device according to the above embodiment, the entire upper door and lower door are formed so as to have a circular arc shape in section, but it is not always necessary to configure in this way, for example, Only the frame of the upper door and the edge of the lower door, which are guide means, may be formed in an arc shape, and the portion other than the edge of the lower door may be formed in another shape such as a flat shape.

  Further, in the sliding door structure of the lifting device according to the above embodiment, the entire upper door and lower door are formed to have an arcuate cross section, but the upper door frame, lower door panel and end It is also possible to adopt a configuration in which a predetermined resistance is applied to the lower door so that the edge portions are respectively formed in a straight shape and the lower door is not moved.

  Furthermore, in the sliding door structure of the lifting device according to the above embodiment, the pair of arcuate frames of the upper door are used as guide means, thereby generating resistance in the lower door that is the door body. This configuration is not necessarily required, and other means may be used as long as a resistance of a magnitude that does not move the door body against the urging force can be applied.

  Furthermore, in the sliding door structure of the lifting device according to the above-described embodiment, a material having a higher static friction coefficient at the contact portion between the edge of the lower door and the frame is used to stabilize the stopped state of the lower door. It is also possible to further improve the performance.

  Furthermore, in the sliding door structure of the lifting device according to the above-described embodiment, the pair of edge portions in the width direction of the lower door is supported by the pair of frames, but this is not necessarily the case. It is not necessary, and it is also possible to support only one side of the lower door with a frame and provide resistance only to one end edge.

  Furthermore, in the slide door structure of the lifting device according to the above-described embodiment, the entire lower door is formed in a part of the cylindrical side wall, but it is not always necessary to configure in this manner, and other than the edge portion. This part may be formed in another shape.

  Furthermore, in the sliding door structure of the lifting device according to the above embodiment, the stopper means is provided for stabilizing the fixed state of the lower door to the upper door. There may be no means. Further, it is not always necessary to use the handle of the lower door also as the stopper means, and a stopper means separate from the handle may be attached.

  Furthermore, in the sliding door structure of the lifting device according to the above embodiment, both the lower door and the upper door include panels, but the upper door panel is not necessarily required.

  Furthermore, in the above embodiment, the lower door, which is a door body, is configured to be movable between a state in which almost the whole is included in the frame of the upper door and a state in which it is not included. Regardless of the positional relationship between the frame and the lower door, the lower door only needs to be slidable between at least two states.

  Furthermore, in the above embodiment, the sliding door structure is configured to slide the lower door into the frame of the upper door at the time of use. However, regardless of the positional relationship between the lower door and the frame before use. If the lower door is disposed against the urging force, it is possible to reduce the force required to move the lower door during use, and to construct a user-friendly sliding door structure.

  Furthermore, in the above embodiment, the lower door is configured to be slidable downward from the pair of frames, but is configured to be slidable upward and laterally from the frame. May be.

  Furthermore, in the above-described embodiment, the sliding door structure is applied to the lifting device. However, the sliding door structure is not necessarily limited to the lifting device, and may be applied to other storage devices, cabinets, and the like.

  Furthermore, in the door opening / closing mechanism of the lifting device according to the above-described embodiment, the biasing means is configured using a spiral spring, but a gas spring or a push spring may be used instead of this, and the arrangement is also provided. A tension spring may be used instead.

  Further, in the door opening / closing mechanism of the lifting device according to the above-described embodiment, the moving means is configured to receive the force for pulling the lifting shelf as an external force to push open the upper door, but it is not always necessary to configure in this way. Alternatively, the moving means may be configured to move the door by an external force different from the movement of the lifting shelf.

  Furthermore, in the door opening / closing mechanism of the lifting device according to the above-described embodiment, the stopper means is configured to stop the door in the opened state, but it is not always necessary to configure in this manner, and there is no stopper means. Also good.

  Furthermore, the door opening / closing mechanism of the lifting device according to the above embodiment includes release means for releasing the stop state of the operating arm as the lifting shelf is stored in the storage case. Alternatively, a release means that can release the stop state of the operating arm irrespective of the storage of the lifting shelf may be configured.

  Furthermore, in the door opening / closing mechanism of the lifting device according to the above-described embodiment, the moving means is composed of the interlocking arm and the operating arm, but it is not always necessary to configure in this way, and the door is moved by receiving external force. Any means can be used.

  Further, in the above embodiment, the door opening / closing mechanism is mounted so as to open the upper door so as to lift from the lower side to the upper side. However, the door opening / closing mechanism is attached to the door that can be opened and closed in the upward or downward direction or the horizontal direction. May be.

  Furthermore, in the above embodiment, the door opening / closing mechanism is applied to a lifting device that lifts and lowers the lifting shelf, but may be applied to other storage devices and the like.

  Further, the lifting device according to the above embodiment includes the sliding door structure as the door main body, but it is not always necessary to configure in this manner, and the lower door is movable in the direction overlapping the upper door and the upper door. Other configurations may be used as long as they are connected to the storage case so as to be openable and closable so as to be lifted upward from below.

  Further, the lifting device according to the above-described embodiment includes the moving means centering on the interlocking arm and the operating arm included in the door opening / closing mechanism. Other configurations may be used as long as they can be moved.

  Furthermore, in the lifting device according to the above-described embodiment, the door body is configured to be opened with the lower door completely moved. However, the lower door is not necessarily configured in this manner. It is also possible to configure the door body to open in a state where it is not moved.

  Furthermore, in the elevating device according to the above-described embodiment, the movement of the upper door is stopped by the stopper means included in the door opening / closing mechanism. However, it is not always necessary to have such a configuration, and there is no need for the stopper means.

  Further, in the lifting device according to the above-described embodiment, the upper door is urged in the opening direction by the urging means included in the door opening / closing mechanism. However, there is no need for such a configuration, and there is no urging means. May be.

  Further, in the lifting device according to the above-described embodiment, the biasing means included in the opening / closing mechanism biases the upper door toward the closing direction when the upper door is closed by a predetermined amount. There is no need to do so, and there is no need for an urging means.

  Furthermore, in the elevating device according to the above-described embodiment, the handle of the elevating shelf is formed at a position facing the back surface of the lower door. May be attached.

  Further, in the lifting device according to the above-described embodiment, the lower door is disposed at a position where the lower door can cover the front surface of the lower section of the lifting shelf. However, the lower door is not necessarily configured in this manner. You may comprise so that a larger range may be covered.

  Further, in the lifting device according to the above-described embodiment, the storage case is divided into the upper section and the lower section by the shelf plate, but it is not always necessary to configure in this way, and the shelf plate may not be provided.

  Furthermore, in the above-described embodiment, the present invention is applied to a lifting device used in a kitchen. However, it can be similarly applied to other storage devices including a lifting shelf that can be lifted and lowered, such as a shoe box at a front door. .

It is the front view which showed schematic structure of the raising / lowering apparatus by 1st Embodiment of this invention. It is sectional drawing of the II-II line shown in FIG. It is sectional drawing of the III-III line shown in FIG. It is a partially broken figure which showed schematic structure of the sliding door structure in the raising / lowering apparatus by 1st Embodiment of this invention. FIG. 5 is an end view of the VV line shown in FIG. 4. It is sectional drawing of the VI-VI line shown in FIG. FIG. 7 is an enlarged view of a “Y” portion shown in FIG. 6. In the slide door structure of the raising / lowering apparatus by 1st Embodiment of this invention, it is the schematic diagram which showed the relationship between a door and urging | biasing force. FIG. 9 is an enlarged view of a “Z” portion shown in FIG. 8. It is the figure which showed schematic structure of the door opening / closing mechanism in the raising / lowering apparatus by 1st Embodiment of this invention. It is sectional drawing of the XI-XI line shown in FIG. It is sectional drawing of the XII-XII line shown in FIG. It is the schematic which showed the opening / closing process of the door by a door opening / closing mechanism in the raising / lowering apparatus by 1st Embodiment of this invention. In the lifting apparatus according to the first embodiment of the present invention, it is a schematic view showing the state of the urging means of the door opening / closing mechanism, and shows the relationship between the urging means and the moving means. It is the schematic which showed the process in which the stopper means of a door opening / closing mechanism is engaged or cancelled | released in the raising / lowering apparatus by 1st Embodiment of this invention. It is sectional drawing which showed the outline of the raising / lowering process of the raising / lowering shelf in the raising / lowering apparatus by 1st Embodiment of this invention. It is sectional drawing which showed the outline of the raising / lowering process of the raising / lowering shelf in the raising / lowering apparatus by 1st Embodiment of this invention, Comprising: The part following FIG. 16 is shown. It is the front view which showed schematic structure of the conventional raising / lowering apparatus used in a kitchen. It is sectional drawing of the XIX-XIX line shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Elevating device 2 ... Elevating shelf 3 ... Storage case 4 ... Front support link 5 ... Rear support link 6 ... Upper door 7 ... Lower door 8 ... Shelf plate 9 ... Support plate 15 ... Handle 19 ... Sliding door structure 20 ... Door Opening / closing mechanism 21 ... Interlocking block 24-32 ... Pin 33 ... Interlocking arm 34 ... Actuating arm 35 ... Spiral spring 36 ... Spring swing arm 37 ... Stopper plate 38 ... Stopper arm 39, 40 ... Roller 42 ... Hinge 45 ... Stopper mechanism 46 ... Engagement part 56, 61 ... Panel 57 ... Frame body 63 ... Handle member 64 ... Engagement piece 68 ... Rotating shaft 69 ... Wire 70 ... Coil spring 72 ... End part 73 ... Engagement part 76 ... Shaft part 85 ... End edge Part 87: Handle part 88 ... Upper section 89 ... Lower section In addition, the same code | symbol in each figure shows the same or an equivalent part.

Claims (6)

A box-shaped storage case having an open surface with the front open;
An elevating shelf that is housed in the housing case and can be freely moved forward and downward through a pair of parallel support links;
An upper door located above and a lower door located below the upper door and movable in a direction overlapping the upper door, covers the open surface of the storage case and is lower than the storage case A door body that is openably and closably connected to be lifted upward from,
An elevating apparatus comprising: moving means for moving the door body so as to open with respect to the storage case as the elevating shelf moves forward and downward. The lifting device according to claim 1, wherein the moving unit includes a biasing unit that biases the door main body in a direction to open the door main body when the door main body opens a predetermined amount or more. The biasing force in the opening direction by the biasing means is set smaller than the component force in the closing direction generated by the weight of the door body,
The elevating device according to claim 1 or 2, wherein the moving means includes stopper means for stopping the movement of the door body. When the lifting shelf is stored in the storage case with the door body fully open, the stop state by the stopper means is released,
The elevating device according to claim 3, wherein the biasing means biases the door body in a closing direction when the door body opens below the predetermined amount. The elevating device according to any one of claims 1 to 4, wherein the elevating shelf further includes a handle arranged so that at least a part thereof faces an inner surface of the lower door. The storage case further includes a shelf that is horizontally disposed below the lifting shelf and bisects the interior of the storage case into an upper compartment and a lower compartment,
The said lower door is an raising / lowering apparatus in any one of Claims 1-5 formed so that the front surface of the said lower division might be covered.

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