JP7301191B2 - stack table - Google Patents

Description

The present invention relates to stack tables.

A stack table (folding table) that allows you to freely change the top plate between a horizontal horizontal position and a vertical standing position. ). In such a stack table, both sides of the lower surface of the top plate are rotatably connected to the upper ends of the left and right legs, and the top plate can be switched between a horizontal posture and an upright posture by rotating the top plate. are widely used. A curtain plate is provided below the rear part of the top plate, and the curtain plate is linked so that it rotates in conjunction with the rotation of the top plate. Various types of stack tables have been provided, which are substantially vertical and store the curtain plate between the legs and the top plate when the top plate is in an upright posture.

In a stack table equipped with such a panel, in order to allow access to the wiring ducts provided on the bottom surface of the tabletop and on the front surface of the tabletop, when the tabletop is in a horizontal position, the bottom surface of the tabletop and the It is preferable to provide a gap between the upper end portion of the curtain plate. In addition, when the position of the tabletop is switched from the horizontal position to the standing position, the gap is set to a predetermined value so that the user's fingers are not caught in the gap between the lower surface of the tabletop and the upper end of the curtain board. Need to keep more than interval. In relation to this, for example, in Patent Document 1, a curtain plate can be switched between an upper position and a lower position, and when the curtain plate is in the lower position, a hand is placed between the top plate and the curtain plate. A stack table is disclosed in which the space between the top plate and the curtain plate is designed so that the wiring work on the wiring duct arranged on the lower surface of the top plate can be performed. Further, Patent Document 2 discloses a stack table in which a panel is arranged with a gap formed between it and the lower surface of the top plate so that a wiring duct arranged in front of the panel can be accessed. there is

Japanese Patent No. 5232617 JP 2015-89425 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a technique capable of reducing the load applied to the curtain plate in a stack table.

In order to solve the above problems, the present invention employs the following means. That is, the stack table according to the present invention is
left and right legs,
While being supported by the leg via a main shaft provided in the upper part of the leg, by rotating about the main shaft in a first direction, it can move along the rear edge of the leg from a substantially horizontal position. A top plate that can be switched to a standing posture,
A usage posture in which the top plate hangs below the top plate and to the rear of the legs with a predetermined gap from the top plate when the top plate is in the horizontal posture; A curtain plate that changes the posture between a storage posture in which the leg body is in contact with the rear edge of the leg when the storage posture is stored, and
a curtain plate control mechanism that controls the attitude of the curtain plate by connecting the top plate and the curtain plate and interlocking with the rotation of the top plate;
with
The curtain plate control mechanism is
a panel side link support portion fixed to the front surface of the panel;
a link pivotally attached to the panel-side link support portion via a first rotation shaft provided parallel to the main shaft;
a top plate-side link support portion that is fixed to the lower surface of the top plate and pivotally supports the link via a second rotation shaft that is parallel to the main shaft;
When the top plate is rotated about the main shaft in the first direction in order to switch the top plate from the horizontal posture to the standing posture, the curtain plate is moved until the top plate reaches the standing posture. is in contact with the trailing edge of the leg,
When the top plate is further rotated in the first direction about the main shaft after the curtain plate is in the contact state, the link rotates about the second rotation shaft in the opposite direction to the first direction. By rotating in the second direction, the top plate approaches the curtain plate so as to face the curtain plate.

According to the stack table of the present invention, in the process of changing the top plate from the horizontal posture to the standing posture, the link rotates in the second direction after the curtain plate comes into contact with the top plate, and the top plate approaches the curtain plate. do. As a result, a predetermined gap can be secured between the top plate and the curtain plate until the curtain plate reaches the abutment state, and when the top plate is in the standing posture, the top plate and the curtain plate can be separated from each other. can be shortened. According to this, in the process of changing the top plate from the horizontal posture to the standing posture, the top plate can be raised while preventing an inclusion such as a user's finger from being caught between the top plate and the curtain plate. When it assumes the posture, the storage efficiency in the front-rear direction can be enhanced.

Further, the top plate-side link support portion may restrict rotation of the link in the first direction about the second rotation shaft when the curtain plate is in the use posture.

According to this, when the curtain plate is in the use posture, the link is restricted from rotating in the first direction about the second rotation shaft by the weight of the curtain plate and the weight of the link itself. Therefore, the usage posture of the curtain plate can be maintained.

Further, the link may be further rotatable in the second direction about the second rotation shaft when the curtain plate is in the retracted posture.

According to this, even if an intervening object such as a user's finger is caught between the curtain board and the leg, the link rotates about the second rotation axis in the second direction. The board can be released backwards. As a result, it is possible to prevent a large clamping force from acting on the inclusion sandwiched between the curtain plate and the leg.

Further, the curtain plate control mechanism is
a stay pivotally supported on the leg via a third pivot shaft;
a curtain plate-side stay support part that is fixed to the front surface of the curtain plate and pivotally attaches the stay via a fourth rotation shaft positioned below the first rotation shaft;
The fourth rotation shaft is formed by a shaft portion provided on the stay,
The curtain plate-side stay support portion has a bearing hole for receiving the shaft portion, and the inner edge of the bearing hole is brought into contact with the shaft portion to thereby rotate the curtain plate around the first rotation axis. Regulating rotation in one direction,
The bearing hole may allow relative movement of the shaft portion with respect to the bearing hole from the state in which the curtain plate is in the use posture to the contact state.

According to this, it is possible to suppress biasing of the curtain plate-side stay support portion due to the relative movement of the shaft portion with respect to the bearing hole during the period from the state in which the curtain plate is in the use posture to the contact state. be. As a result, it is possible to prevent the curtain plate from being lifted while the curtain plate is in the use posture until it comes into contact with the top plate. A predetermined or more space can be secured between the plates.

In addition, the present invention
left and right legs,
While being supported by the leg via a main shaft provided in the upper part of the leg, by rotating about the main shaft in a first direction, it can move along the rear edge of the leg from a substantially horizontal position. A top plate that can be switched to a standing posture,
A usage posture in which the top plate hangs below the top plate and to the rear of the legs with a predetermined gap from the top plate when the top plate is in the horizontal posture; A curtain plate that changes the posture between a storage posture in which the leg body is in contact with the rear edge of the leg when the storage posture is stored, and
a curtain plate control mechanism that controls the attitude of the curtain plate by connecting the top plate and the curtain plate and interlocking with the rotation of the top plate;
A stack table comprising
The curtain plate control mechanism is
a panel support portion that is fixed to the lower surface of the top panel and pivotally supports the panel via an upper panel rotation shaft that is provided parallel to the main shaft;
a stay pivotally supported on the leg via a stay rotation shaft;
a curtain plate-side stay support portion fixed to the front surface of the curtain plate and pivotally connected to the stay via a lower curtain plate rotation shaft positioned below the upper curtain plate rotation shaft;
When the top plate is rotated in the first direction about the main shaft in order to switch the top plate from the horizontal posture to the standing posture, the curtain plate is moved until the top plate reaches the standing posture. is in contact with the trailing edge of the leg,
The lower curtain plate rotating shaft is formed by a shaft portion provided on the stay,
The curtain plate-side stay support portion has a bearing hole for receiving the shaft portion, and by bringing the inner edge of the bearing hole into contact with the shaft portion, the upper curtain plate rotating shaft of the curtain plate is rotated. Regulating rotation in the first direction,
The bearing hole may allow relative movement of the shaft portion with respect to the bearing hole from the state in which the curtain plate is in the use posture to the contact state.

This also suppresses biasing of the curtain plate-side stay support portion due to relative movement of the shaft portion with respect to the bearing hole during the period from the state in which the curtain plate is in the use posture to the contact state. be. As a result, it is possible to reduce the load caused by the shaft portion on the curtain plate and the curtain plate support portion while the curtain plate is in the use posture to the abutting state.

Furthermore, the stay may be formed to be variable in length.

According to this, even when the front-rear width of the top plate is changed, members other than the top plate can be shared.

The contents of the means for solving the above problems can be combined as much as possible without departing from the scope of the problems and technical ideas of the present invention.

According to the present invention, in the stack table, it is possible to prevent an object such as a user's finger from being caught between the top plate and the curtain plate, while increasing storage efficiency in the front-rear direction.

FIG. 2 is an overall perspective view of the stack table according to the embodiment when it is in use; FIG. 4 is a side view of the stack table according to the embodiment when it is in use; FIG. 4 is an overall perspective view of the stack table according to the present embodiment when it is in a folded state; FIG. 4 is a side view of the stack table according to the embodiment when it is in a folded state; FIG. 4 is a cross-sectional view of the center of the stack table in use, taken along a plane perpendicular to the left-right direction. It is an exploded view of the curtain board control mechanism concerning this embodiment. FIG. 4 is a view showing a state in which the link member is pivotally supported by the top plate-side bracket and the curtain plate-side bracket, and is a cross-sectional view taken at the center along a plane perpendicular to the axial direction. 3 is an exploded view of a stay according to the embodiment; FIG. It is a figure which shows the stay which concerns on this embodiment. FIG. 10 is a diagram for explaining the operation when the stack table according to the present embodiment is folded from the use state, and shows a state in which the top board is in a horizontal posture; FIG. 10 is a diagram for explaining the operation when the stack table according to the present embodiment is changed from the use state to the folded state, and is a diagram showing a state in which the curtain plate reaches the contact state. FIG. 10 is a diagram for explaining the operation when the stack table according to the present embodiment is folded from the use state, and shows the state in which the top plate has reached the standing posture; 10B is a diagram showing the relationship between the fourth axial long hole and the fourth shaft portion in the state shown in FIG. 10A. FIG. 10C is a diagram showing the relationship between the fourth axial long hole and the fourth shaft portion in the state shown in FIG. 10B. FIG. 10D is a diagram showing the relationship between the fourth axial long hole and the fourth shaft portion in the state shown in FIG. 10C; FIG. FIG. 10 is a diagram showing changes in attitudes of the curtain plate and the link with respect to the top plate while the curtain plate is in a use posture to a contact state; FIG. 5 is an explanatory diagram of the stack table according to the embodiment when the top plate is in a horizontal posture; FIG. 10 is a diagram showing a state in which a user's finger is sandwiched between the panel and the legs in the stack table according to the present embodiment; It is a figure which shows the modification of the stack table which concerns on this embodiment. FIG. 10 is a diagram for explaining a rotation axis of a stay in a modified example of the stack table according to the embodiment;

Preferred embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below are examples for carrying out the present invention, and the dimensions, materials, shapes, relative arrangements, etc. of the components described in the embodiments are not particularly described. The limits are not intended to limit the technical scope of the invention only to them. The stack table 100 according to the present embodiment can be changed between a use state as shown in FIGS. 1 and 2 and a folded state as shown in FIGS. 1 is an overall perspective view of the stack table 100 in use, FIG. 2 is a side view of the stack table 100 in use, FIG. 3 is an overall perspective view of the stack table 100 in a folded state, and FIG. is a side view when the stack table 100 is folded. The stack table 100 can be stacked forward and backward by being folded.

As shown in FIGS. 1 and 3, the stack table 100 according to the present embodiment is formed symmetrically as a whole. In the following description, the same reference numerals are assigned to the symmetrical structures. The stack table 100 includes a top plate 1, left and right legs 2, 2 supporting the top plate 1, beams 3 extending in the left-right direction and connecting the legs 2, and fixed to both ends of the lower surface of the top plate 1. A top plate rotating mechanism 10, 10 for connecting the top plate 1 so as to be rotatable about the beam 3, and a curtain connected to the top plate 1 and the legs 2 and arranged substantially vertically below the top plate 1. Panel control mechanisms 20, 20 for controlling the posture of the panel 4 by connecting the panel 4, the panel 1 and the panel 4 and interlocking with the rotation of the panel 1, and a fixed shelf 50 . The stack table 100 is formed symmetrically as a whole. In this specification, the side on which the user sits is referred to as the "front" side, and the opposite side, that is, the side of the curtain plate 4 is referred to as the "rear" side. In addition, the area surrounded by the top plate 1 and the legs 2 in the use state is defined as "lower leg space". FIG. 5 is a cross-sectional view of the center of the stack table 100 in use, cut along a plane perpendicular to the left-right direction.

The top plate 1 is mainly a member for placing a PC or the like on the upper surface of the stack table 100 in use so that the user can work thereon. As shown in FIG. 1, the top plate 1 has a substantially rectangular outer shape elongated in the horizontal direction when viewed from above. As shown in FIGS. 1 and 2, when the stack table 100 is in use, the top plate 1 is in a substantially horizontal horizontal posture. As shown in FIGS. 3 and 4, when the stack table 100 is in the folded state, the top plate 1 is erected substantially vertically along the rear edges of the support legs 21 of the legs 2. Posture. Here, in the following description, when referring to the upper surface, the lower surface, the front end portion, and the rear end portion of the top plate 1, regardless of the posture of the top plate 1, when the top plate 1 is in a horizontal posture It refers to the upper surface, the lower surface, the front end, and the rear end. The front-to-rear width of the top plate 1 is W1. A cord hole 30 is formed in the rear portion of the upper surface of the top plate 1 so as to communicate with the lower surface of the top plate 1 and accommodate a tap or the like by an opening vertically penetrating the top plate 1 .

The top plate 1 is locked (maintained) in each of the horizontal posture and the standing posture by the top plate rotating mechanism 10 . The user unlocks the tabletop rotating mechanism 10 by pushing up the operating lever 101 exposed from the tabletop rotating mechanism 10 in a direction toward the tabletop 1, and the tabletop 1 is moved between the horizontal posture and the standing posture. It can be rotationally displaced between The stack table 100 is locked by the top plate rotating mechanism 10 when the top plate 1 reaches a horizontal posture or a standing posture.

The legs 2 are members that support the tabletop 1 via the tabletop rotating mechanism 10 . As shown in FIGS. 2, 3, and 5, the leg 2 has a substantially inverted T shape when viewed from the side. The leg body 2 has a support leg 21 extending obliquely upward so as to be slightly inclined toward the near side, and a grounding leg 22 extending in two directions forward and backward from the lower end of the support leg 21 and grounded on the ground. Further, as shown in FIG. 5, a beam connection plate 23 to which the beam 3 is connected is provided on the upper part of the support leg 21 and on the inner surface of the stack table 100 . Further, the beam connection plate 23 is provided with a reinforcing member 24 that supports the beam 3 inside the top plate rotating mechanism 10 and pivotally supports the stay 8 of the curtain plate control mechanism 20, which will be described later. The reinforcing body 24 is fixed to the beam connection plate 23 along the support leg 21 . Casters 25 are provided at the ends of the grounding legs 22 to smoothly move the stack table 100 .

The beam 3 is a beam member that increases the rigidity of the stack table 100 by connecting the legs 2 together, and is a member that serves as a rotation shaft for the top plate 1 . The beam 3 is a steel pipe made of steel material, and has a cylindrical shape as shown in FIG. As described above, the beam 3 connects the left and right legs 2 via the beam connection plate 23 . Since the beams 3 connect the left and right legs 2 via the table top rotation mechanism 10 to function as beam members, the rigidity of the stack table 100 as a structural body can be ensured. The beam 3 also functions as a rotation shaft for the top plate 1 . Therefore, the stack table 100 according to the present embodiment can secure a wider lower leg space than the stack table 100 in which the rotating shaft of the top plate 1 is separately provided. However, the beam 3 does not have to function as a rotating shaft, and a rotating shaft for rotating the top plate 1 may be separately provided.

The tabletop rotation mechanism 10 is a mechanism that allows the tabletop 1 to rotate with respect to the beam 3, and has a function of locking the posture of the tabletop 1 to a horizontal posture or an upright posture. As shown in FIGS. 2 to 5, the top plate rotating mechanism 10 is provided on the lower surface of the top plate 1, and has a lock structure that engages with the legs 2 therein to lock the posture of the top plate 1. have. Further, the top plate rotating mechanism 10 is configured to be slidable on the side surface of the beam 3 . When the user pushes up the operation lever 101 exposed from the tabletop rotation mechanism 10 in a direction approaching the tabletop 1, the engagement between the lock structure and the legs 2 is released, and the tabletop 1 is rotated around the beam 3. It is possible to change the attitude of the top board 1 by moving it. Various existing configurations can be adopted for such a top plate rotating mechanism 10 . The top plate rotating mechanisms 10, 10 are interlocked with each other by being connected by an interlocking pipe (not shown). As a result, the user can simultaneously operate the top plate rotating mechanisms 10, 10 only by rotating one of the operation levers 101. FIG.

The curtain board 4 is mainly a member for hiding the leg space when the stack table 100 in use is viewed from the back side. As shown in FIG. 3, the curtain plate 4 has a substantially rectangular outer shape elongated in the left-right direction when viewed from the front. The lateral width of the curtain board 4 is longer than the interval between the legs 2. - 特許庁The curtain plate 4 is linked to the top plate 1 via a curtain plate control mechanism 20, which will be described later. there is More specifically, as shown in FIGS. 1 and 2, when the top plate 1 is in a horizontal posture, the curtain plate 4 is positioned below the top plate 1 and behind the legs 2. , the lower surface of the top plate 1 and the space d1 are provided, and the usage posture is such that it hangs down. Here, the curtain plate 4 is preferably arranged near the rear end portion of the top plate 1 in order to secure leg space in the use posture. The curtain plate 4 is arranged offset to the front side with a gap of d2 from the rear end portion of the top plate 1. - 特許庁As shown in FIGS. 3 and 4, when the table top 1 is in the upright posture, the front panel 4 is in contact with the rear edge of the support leg 21 of the leg 2, and the table top 1 is in contact with the rear edge. It is in a retracted posture in which it is stored between the lower surface and the rear edge of the support leg 21 of the leg 2 . As a result, the stack table 100 can be stacked forward and backward by being folded with the top plate 1 in the standing posture. When the curtain plate 4 is in the retracted posture, it is not necessary to store the curtain plate 4 between the top plate 1 and the support leg 21 of the leg 2. It should just be in contact with the leg 2 along the rear edge of the. Further, as shown in FIG. 5, a wiring tray 40 on which wiring can be placed is provided on the upper part of the front surface of the curtain board 4 . The wiring tray 40 is provided substantially perpendicular to the front surface of the curtain plate 4 and has a plate-like portion extending to the left and right. It is possible.

Next, the curtain board control mechanism 20 will be described. The curtain plate control mechanisms 20, 20 are configured symmetrically and have the same basic structure, so only one of the curtain plate control mechanisms 20 will be described. In the following description, the rotation axis of the top plate 1 with respect to the beam 3 is defined as a top plate rotation axis A, and the direction parallel to the top plate rotation axis A is defined as an axial direction. That is, the axial direction is the same as the left-right direction. In addition, the inner side in the axial direction (lateral direction) means the inner side of the leg space, unless otherwise specified.
That is, it refers to the side closer to the curtain plate control mechanism 20 on the opposite side. In addition, the top plate rotation axis A corresponds to the "main shaft" in the present invention.

As shown in FIG. 5, the curtain plate control mechanism 20 includes a curtain plate side bracket 7 fixed to the front surface of the curtain plate 4, a link 6 whose one end side is pivotally attached to the curtain plate side bracket 7, and a top plate 1. A top board side bracket 5 fixed to the lower surface and pivotally supporting the other end side of the link 6, a stay 8 having one end pivotally supported by the leg 2 and the other end pivotally attached to the curtain board side bracket 7, have The link 6 and the stay 8 are offset in the axial direction so that they do not interfere with each other when the top plate 1 rotates. Hereinafter, the rotation axis of the link 6 with respect to the curtain plate side bracket 7 will be referred to as the first rotation axis (upper curtain plate rotation axis) A1, and the rotation axis of the link 6 with respect to the top plate side bracket 5 will be referred to as the second rotation axis (link rotation axis) A2. The rotation axis of the stay 8 with respect to the leg 2 is the third rotation axis (stay rotation axis) A3, and the rotation axis of the stay 8 with respect to the curtain plate side bracket 7 is the fourth rotation axis (lower curtain plate rotation axis). Drive axis) A4. The first rotation axis A1, the second rotation axis A2, the third rotation axis A3, and the fourth rotation axis A4 are parallel to the top plate rotation axis A. Further, as shown in FIG. 5, the second rotation axis A2 is arranged closer to the top plate rotation axis A than the first rotation axis A1. Further, the third rotation axis A3 is arranged below the top plate rotation axis A of the leg 2 . Further, the fourth rotation axis A4 is arranged below the first rotation axis A1 in the curtain plate side bracket 7 . In addition, with respect to each rotation axis, the same direction as the direction in which the tabletop 1 rotates to change the tabletop 1 from the horizontal posture to the standing posture is defined as R1, and the opposite direction is defined as R2. Although the details will be described later, when the curtain plate 4 is in the use posture, the rotation of the link 6 in the first direction R<b>1 is restricted by the top plate side bracket 5 .

Each configuration of the curtain plate control mechanism 20 will be described below. FIG. 6 is an exploded view for explaining each member of the curtain plate control mechanism 20. As shown in FIG. FIG. 7 is a view showing a state in which the link 6 is pivotally supported by the top plate side bracket 5 and the curtain plate side bracket 7, and the center is shown on a plane orthogonal to the axial direction when the curtain plate 4 is in the use posture. It is a sectional view when cut. FIG. 8 is an exploded view of the stay 8. FIG. FIG. 9 is a diagram showing the stay 8. FIG.

The top plate side bracket 5 is provided on the lower surface of the top plate 1 and is fixed at a position between the beam 3 and the curtain plate 4 in the front-rear direction and inside the legs 2 in the left-right direction. As shown in FIG. 6 , the top plate-side bracket 5 has a fixed portion 51 that has a flat upper surface and is fixed to the top plate 1 on the upper surface, and extends downward from the fixed portion 51 while being slightly inclined toward the back side. and a link pivotally attached portion 53 that extends substantially inward from the distal end portion of the extended portion 52 and to which the link 6 is pivotally attached. A second shaft hole H2, which is a hole for pivotally supporting a second shaft portion S2 that serves as a second rotation shaft A2, is formed at the tip of the link pivot portion 53. As shown in FIG. Further, although the details will be described later, the vicinity of the base end of the link pivotal attachment portion 53 functions as a restriction portion that restricts the movement of the link 6 in the first direction R1. The top plate side bracket 5 is an example of the "top plate side link support portion" in the present invention.

The curtain plate side bracket 7 is provided between the top plate side bracket 5 and the leg 2 in the left-right direction, and is formed by bending a sheet metal material. As shown in FIG. 6, the curtain plate-side bracket 7 includes a fixed plate 71 fixed to the curtain plate 4, a curtain plate-side link support portion 72 to which the link 6 is pivotally attached, and a curtain plate to which the stay 8 is pivotally attached. A plate-side stay support portion 73 is provided. The fixing plate 71 has a substantially rectangular shape elongated in the vertical direction when viewed from the front. The curtain plate-side link support portion 72 is formed so as to extend forward from the upper portion of the side edge of the fixed plate 71 on the side of the top plate-side bracket 5 . Further, the curtain plate side stay support portion 73 is formed so as to extend in the front direction from the lower portion of the side edge of the fixed plate 71 on the leg 2 side. The curtain plate side link support portion 72 and the curtain plate side stay support portion 73 are perpendicular to the top plate rotation axis A. As shown in FIG. A first shaft hole H<b>1 that is a hole for pivotally supporting the first shaft portion S<b>1 of the link 6 is formed in the curtain plate side link support portion 72 . The curtain plate-side link support portion 72 is an example of the "curtain plate-side link support portion” in the present invention. In addition, the curtain plate side stay support portion 7
3 is an example of the "front plate side stay support portion" in the present invention.

Further, the curtain plate side stay support portion 73 is formed with a fourth shaft long hole H4 that is a long hole for pivotally supporting the fourth shaft portion S4 of the stay 8 . Although the details will be described later, the fourth shaft slot H4 allows the relative movement of the fourth shaft portion S4 due to the rotation of the stay 8 about the third rotation axis A3 as the posture of the curtain plate 4 changes. Thus, the fourth shaft portion S4 is guided. As shown in FIG. 6, the fourth axial long hole H4 is a long hole that is slightly inclined in the longitudinal direction with respect to the vertical direction. The fourth axial long hole H4 is an upper wall H41 and a lower wall H42, which are arcuate inner walls positioned substantially vertically and face each other, and inner walls connecting the upper wall H41 and the lower wall H42 and parallel to each other. It is formed by a pair of opposing guide walls H43, H43. The fourth axially long hole H4 is inclined so that the lower wall H42 is positioned deeper than the upper wall H41. The upper wall H41 and the lower wall H42 have a substantially semicircular arc shape in plan view, and the center of the arc shape is located inside the long hole. Also, the diameter of the upper wall H41 and the lower wall H42 and the distance between the guide walls H43, H43 are substantially equal to or slightly larger than the diameter of the fourth shaft portion S4 (see FIG. 11A). The fourth axial long hole H4 is an example of a "bearing hole" in the present invention.

As shown in FIG. 6, the link 6 is composed of a male link member 6A and a female link member 6B which are divided in the left-right direction. It is formed by engaging with the plate-side link support portion 72 so as to sandwich it from the left and right. As shown in FIG. 7, the link 6 includes a second shaft portion S2 that forms a second rotation shaft A2 by being pivotally supported in a second shaft hole H2 of the top plate side bracket 5, and a curtain plate side bracket 7. A first shaft portion S1 that forms a first rotation shaft A1 by being pivotally supported in a first shaft hole H1, and a link portion 61 that connects the first shaft portion S1 and the second shaft portion S2. have. Further, the link 6 has a contact portion 62 provided on the side opposite to the link portion 61 with respect to the second shaft portion S2. As shown in FIG. 7, the contact portion 62 is formed to contact the lower edge of the link pivotal attachment portion 53 of the top plate-side bracket 5 when the curtain plate 4 is in the use posture. More specifically, the lower edge of the link pivotally attached portion 53 abuts against the abutting portion 62 from the first direction R1 side, thereby functioning as a restricting portion. The restricting portion restricts the link 6 from rotating further in the first direction R1 when the curtain plate 4 is in the use posture. On the other hand, rotation of the link 6 about the second rotation axis A2 in the second direction R2 is permitted.

The stay 8 is a member that maintains the posture of the curtain plate 4 by connecting the leg 2 and the curtain plate 4 . As shown in FIG. 6, the stay 8 includes a third shaft pin B3 that is pivotally supported by a reinforcing member 24 provided on the leg 2 to form a third rotation shaft A3, and a fourth shaft pin B3 of the curtain plate side bracket 7. One end side is connected to the curtain plate side stay support portion 73 of the curtain plate side bracket 7 via the fourth shaft pin B4 pivotally supported in the axial hole H4 to form the fourth rotation shaft A4 and the fourth shaft pin B4. and a male stay member 8A having one end to which the other end of the male stay member 8A is fitted and the other end to which is connected to a reinforcing body 24 provided on the leg 2 via a third shaft pin B3. and a side stay member 8B. The third shaft pin B3 and the fourth shaft pin B4 have a rivet shape. The third axle pin B3 has a third axle S3 that is pivotally supported by the reinforcement 24 to form a third pivot axis A3 and engages the reinforcement 24 . Similarly, the fourth shaft pin B4 has a fourth shaft portion S4 that forms a fourth rotation shaft A4 by being pivotally supported in the fourth shaft long hole H4, and engages with the male stay member 8A. . The fourth shaft portion S4 is an example of the "shaft portion" in the present invention.

As shown in FIG. 8, the male stay member 8A includes a fourth shaft pin receiving portion 84 with which the fourth shaft pin B4 is engaged, a male stay portion 81 extending from the fourth shaft pin receiving portion 84, have The male side stay portion 81 is formed to have a generally quadrangular prism shape as a whole. A male engaging portion 82 is formed on the distal end side of the male stay portion 81 by making the width of the male stay portion 81 narrower than the distal end from the middle to the vicinity of the distal end.

The female side stay member 8B has a third shaft pin receiving portion 83 with which the third shaft pin B3 is engaged, and a female side stay portion 85 extending from the third shaft pin receiving portion 83 . The female side stay portion 85 has a substantially square tubular shape with one side open, and is formed so that the fitting position of the male side stay member 8A in the longitudinal direction can be changed. The female stay portion 85 has a base wall 851 extending from the third shaft pin receiving portion 83 and a pair of opposing holding walls 852 , 852 standing from both side edges of the base wall 851 . The space between the holding walls 852 , 852 is designed to be equal to or slightly larger than the width of the male stay portion 81 .

A first female engaging portion 861 and a second female engaging portion 862 selectively engageable with the male engaging portion 82 are formed between the holding walls 852 , 852 . The first female engaging portion 861 is formed on the distal end side of the female stay portion 85, and the second female engaging portion 862 is formed on the third shaft pin receiving portion 83 side of the female stay portion 85. there is The first female side engaging portion 861 is formed by a projecting wall pair 8611 and a projecting wall pair 8612 formed by projecting projecting walls from a pair of holding walls 852 , 852 so as to face each other. The projecting wall pair 8612 is provided on the third shaft pin receiving portion 83 side with a predetermined gap from the projecting wall pair 8611 in the extending direction of the female stay portion 85 . The distance between the protruding walls of the protruding wall pair 8611 and the protruding wall pair 8612 is designed to be greater than the width of the narrow portion of the male stay portion 81 . The distance between the projecting wall pair 8611 and the projecting wall pair 8612 is designed to be equal to or slightly larger than the length of the male side engagement portion 82 of the male side stay portion 81 in the extending direction. The first female side engaging portion 861 engages with the male side engaging portion 82 by contacting the male side engaging portion 82 with the pair of retaining walls 852, 852, the projecting wall pair 8611, and the projecting wall pair 8612. do.

The second female side engaging portion 862 includes a pair of projecting walls 8621 formed by projecting projecting walls facing each other from the pair of holding walls 852, 852, and projecting in the extending direction of the female stay portion 85. It is formed by a wall pair 8621 and an engagement wall 8622 which is provided on the side of the third shaft pin receiving portion 83 with a predetermined gap therebetween and which connects the holding walls 852 , 852 together. The distance between the protruding walls in the protruding wall pair 8621 is designed to be greater than the width of the narrow portion of the male stay portion 81 . Also, the distance between the projecting wall pair 8621 and the engaging wall 8622 is designed to be equal to or slightly larger than the length of the male side stay portion 81 in the extending direction of the male side engaging portion 82 . The second female side engaging portion 862 engages with the male side engaging portion 82 by contacting the male side engaging portion 82 with the pair of holding walls 852 , 852 , the projecting wall pair 8621 and the engaging wall 8622 . do.

In order to connect the male side stay member 8A and the female side stay member 8B, the male side engaging portion 82 of the male side stay member 8A is connected to the first female side engaging portion 861 and the second female side engaging portion 861 of the female side stay member 8B. It may be engaged by fitting into either one of the female side engaging portions 862 . In the female stay member 8B, the engagement position of the male stay member 8A with the male engagement portion 82 can be selected from the first female engagement portion 861 and the second female engagement portion 862. , the length of the stay 8 can be changed. Here, the distance between the third rotating shaft A3 and the fourth rotating shaft A4 when the male side engaging portion 82 is engaged with the first female side engaging portion 861 is defined as a first stay length X1, and the male side The distance between the third rotating shaft A3 and the fourth rotating shaft A4 when the engaging portion 82 is engaged with the second female side engaging portion 862 is defined as a second stay length X2. The second stay length X2 is shorter than the first stay length X1. In addition, in the stack table 100 according to the present embodiment, the male side engaging portion 82 is engaged with the first female side engaging portion 861, and the distance between the third rotation axis A3 and the fourth rotation axis A4 is is the first stay length X1.

As shown in FIG. 5, in the curtain plate control mechanism 20, the stay 8 is provided so that the holding walls 852, 852 of the female side stay member 8B are parallel to the axial direction. That is, the holding walls 852, 852 restrict the relative movement of the male stay member 8A with respect to the female stay member 8B in the first and second rotation directions. As a result, separation of the male stay member 8A and the female stay member 8B due to the rotation of the stay 8 is suppressed. on the other hand,
As described above, the male stay member 8A and the female stay member 8B can be connected simply by fitting the male stay member 8A into the female stay member 8B. Attachment/detachment to/from the side stay member 8B and length change of the stay 8 can be easily performed.

<Posture control>
Next, by changing the posture of the top plate 1 from the horizontal posture to the upright posture, the operation of changing the table from the use state to the folded state will be taken as an example. Posture control of the curtain plate 4 will be described. 10A shows a state in which the top plate 1 is in a horizontal posture, and FIG. 10B shows a state in which the curtain plate 4 has reached a contact state by rotating the top plate 1 in the first direction R1 from the state shown in FIG. 10A. FIG. 10C is a diagram showing a state in which the tabletop 1 reaches the standing posture by further rotating in the first direction R1 from the state shown in FIG. 10B. 11A to 11C are diagrams showing the relationship between the fourth axial long hole H4 and the fourth shaft portion S4 in the states shown in FIGS. 10A to 10C, respectively.

First, when the stack table 100 shown in FIG. 10A is in use, the rotation of the top plate 1 about the top plate rotation axis A is restricted by the top plate rotation mechanism 10, and the posture of the top plate 1 becomes horizontal. Locked. Then, the posture of the curtain plate 4 is maintained in the usage posture in which the curtain plate control mechanism 20 hangs down below the top plate 1.例文帳に追加In this state, as shown in FIG. 2, a gap C is formed between the lower surface of the top plate 1 and the upper end surface of the curtain plate 4 with a predetermined distance d1. When the curtain plate 4 is in the use posture, the weight of the curtain plate 4 acts on the link 6 around the second rotation axis A2 in the first direction R1. However, as described above, the top plate-side bracket 5 restricts the link 6 from further rotating in the first direction R1 around the second rotation axis A2 from the state in which the curtain plate 4 is in the use posture. . Therefore, the weight of the panel 4 restricts the panel 4 from lowering further, and the height position of the panel 4 is maintained. Further, as shown in FIG. 11A, the weight of the stay 8 causes the fourth shaft portion S4 to drop to the bottom of the fourth shaft elongated hole H4 and abut against the bottom wall H42. In this state, the circular arc-shaped lower wall H42 is in contact with the side surface of the fourth shaft portion S4, so that the rotation of the fourth shaft portion S4 around the third rotation axis A3 is restricted. This restricts the rotation of the stay 8 about the third rotation axis A3. Since the posture of the stay 8 is maintained, the curtain plate 4 in the use posture is restricted from rotating around the first rotation axis A1, and the hanging state of the curtain plate 4 (hereinafter referred to as the hanging state) is maintained. It is As described above, when the stack table 100 is in use, the height position and hanging state of the curtain plate 4 are maintained. As a result, the use posture of the curtain board 4 is maintained, and the shielding of the leg space by the curtain board 4 is suitably performed.

In order to change the posture of the top plate 1 from this state to the standing posture from the horizontal posture, first, the posture of the top plate 1 is maintained (locked) by operating the tip of the operation lever 101 to approach the top plate 1 . unlock. Then, with the top plate 1 unlocked, the top plate 1 is rotated in the first direction R1. When the user pushes the top plate 1 to rotate the top plate 1 in the first direction R1, the top plate rotating mechanism 10 slides around the beams 3 to move the top plate 1 in the first direction R1. rotation is started. When the top board 1 is rotated in the first direction R1, the lower end of the curtain board 4 as shown in FIG. state. Hereinafter, the state in which the curtain plate 4 is in contact with the support leg 21 of the leg 2 is defined as the contact state, and the operation of each part until the curtain plate 4 in the use posture reaches the contact state will be described.

When the top plate 1 in the horizontal posture is rotated in the first direction R1 around the top plate rotation axis A, the curtain plate 4 descends and moves forward while maintaining the hanging state. In the state immediately before reaching the standing posture shown in FIG. 10C, the lower end of the curtain plate 4 contacts the rear edge of the support leg 21 of the leg 2, so that the curtain plate 4 and the leg 2 are in contact ( contact state). Between the use posture and the abutment state, the curtain plate 4 is in a drooping state by rotating in the second direction R2 around the first rotation axis A1 due to its own weight. Here, let L be an imaginary straight line connecting the first rotation axis A1 and the second rotation axis A2 when viewed in the axial direction. As shown in FIG. 10A, the imaginary straight line L is substantially horizontal when the curtain plate 4 is in the use posture, and rotates about the top plate rotation axis A together with the top plate 1 in the first direction R1. Then, as shown in FIG. 10B, the curtain plate 4 comes into contact before the imaginary straight line L becomes vertical. As a result, a moment acts on the link 6 in the first direction R1 around the second rotation axis A2 while the curtain plate 4 is in the contact state from the use posture. As a result, although the rotation of the link 6 about the second rotation axis A2 in the second direction R2 is permitted, the link 6 is rotated in the second direction before the curtain plate 4 changes from the use posture to the contact state. Rotation in the second direction R2 about the second rotation axis A2 is suppressed. Further, as described above, the top plate-side bracket 5 restricts the link 6 from further rotating in the first direction R1 about the second rotation axis A2 from the state in which the curtain plate 4 is in the use posture. , the link 6 is restrained from rotating around the second rotation axis A2 by its own weight and the weight of the curtain plate 4 while the curtain plate 4 is in the use posture to the abutting state.

Further, as shown in FIG. 10B, the stay 8 rotates in the first direction R1 about the third rotation axis A3 as the curtain plate 4 changes its posture. Further, as shown in FIG. 11B, the fourth shaft portion S4 moves in the fourth shaft long hole H4 toward the upper wall H41 while contacting the guide walls H43, H43. Then, the curtain plate 4 comes into contact with the upper wall H41 before the fourth shaft portion S4 contacts the upper wall H41. Here, the position of the fourth shaft portion S4 in the fourth axial long hole H4 when the curtain plate 4 is in the use posture is defined as a first position, and the fourth shaft portion S4 when the curtain plate 4 reaches the contact state. at the fourth axial long hole H4 is defined as a second position. When the fourth shaft portion S4 is at the first position, the center of the fourth shaft portion S4, that is, the positions of the fourth rotation shaft A4 and the center of the arc of the lower wall H42 substantially coincide.

FIG. 12 is a diagram for explaining the relationship between the fourth axial long hole H4 and the fourth shaft portion S4 when the curtain plate 4 is in the contact state from the use posture. Here, T0 in FIG. 12 indicates the trajectory drawn by the first rotation axis A1 from the use posture to the contact state of the curtain plate 4. As shown in FIG. As indicated by T0, the first rotation axis A1 draws an arc shape centering on the top plate rotation axis A. As shown in FIG. Further, T1 in FIG. 12 is the trajectory drawn by the center of the arc of the lower wall H42. T1 is equal to T0 offset downward by the distance between the first pivot axis A1 and the arc center of the lower wall H42. Further, T2 in FIG. 12 indicates the trajectory drawn by the fourth rotation axis A4. As indicated by T2, the fourth rotation axis A4 draws an arc-shaped trajectory centered on the third rotation axis A3.

As shown in FIG. 12, T1 and T2 do not completely match, and as the stay 8 rotates about the third rotation axis A3 in the first direction R1, the fourth rotation axis A4 moves toward the lower wall. The trajectory is separated from the center of the arc of H42. That is, the fourth shaft portion S4 draws a locus that separates from the lower wall H42 as the stay 8 rotates about the third rotation axis A3 in the first direction R1. The direction in which the fourth shaft portion S4 separates from the lower wall H42 is defined as a first guide direction G1. The first guide direction G1 is a direction that slightly inclines toward the front as it goes upward. As shown in FIG. 11B, the fourth axial long hole H4 according to the present embodiment is arranged so as to guide the relative movement of the fourth shaft portion S4 in the fourth axial long hole H4 in the first guide direction G1. Designed. More specifically, the guide walls H43, H43 extend in the first guide direction G1, and the upper wall H41 is formed so as not to come into contact with the fourth shaft portion S4 reaching the second position. there is Further, as described above, since the distance between the guide walls H43, H43 is substantially the same as the diameter of the fourth shaft portion S4, the fourth shaft portion S4 is in contact with the guide walls H43, H43 while the fourth elongated hole is formed. inside in the first guide direction G1. As a result, the fourth shaft portion S4 is guided into the fourth axially elongated hole H4 without urging the inner wall of the fourth axially elongated hole H4 in the first guide direction G1. That is, the stay 8 prevents the curtain plate-side stay support portion 73 from being biased in the first guide direction G1. If the curtain plate side bracket 7 is urged in the first guide direction G1 by the stay 8, the moment acting on the link 6 via the curtain plate 4 causes the link 6 to move to the second position around the second rotation axis A2. There is a possibility of turning in direction R2. As a result, the curtain plate 4 and the first rotation shaft A1 are lifted. On the other hand, in the curtain plate control mechanism 20 according to the present embodiment, the biasing force of the stay 8 is reduced by guiding the relative movement of the fourth shaft portion S4 in the first guide direction G1 through the fourth shaft long hole H4. This restrains the link 6 from rotating in the second direction R2 about the second rotation axis A2. That is, the curtain plate 4 and the first rotation shaft A1 are prevented from being lifted from the use posture to the contact state. In addition, due to the contact between the fourth shaft portion S4 and the guide walls H43, H43, the curtain plate 4 is further moved from the hanging state to the first rotation during the period from the use posture to the contact state. Rotation around the driving axis A1 is restricted. As a result, the hanging state of the curtain board 4 is maintained.

13A and 13B are diagrams showing changes in posture of the panel 4 and the link 6 with respect to the top panel 1 during the transition from the use posture to the abutment state. As shown in FIG. 13, the curtain plate 4 rotates in the second direction R2 about the first rotation axis A1. Further, as described above, the weight of the link 6, the weight of the curtain plate 4, and the biasing force of the stay 8 suppress the rotation of the link 6 around the second rotation axis A2. The position of the rotation center of the curtain plate 4 is fixed. Here, the trajectory drawn by the rear edge of the upper end surface of the curtain plate 4 is an arc centered on the first rotation axis A1. Here, since the first rotation axis A1 is located in front of the curtain plate 4 and below the upper end of the curtain plate 4, the gap C formed between the top plate 1 and the curtain plate 4 is represented by the lower surface of the top plate 1 and the arc drawn by the trailing edge of the upper end surface of the curtain plate 4 . As described above, since the rotation of the link 6 about the second rotation axis A2 in the second direction R2 is suppressed, the first rotation axis A1 is prevented from approaching the top plate 1 any further. It is As a result, compared to the case where the link 6 rotates about the second rotation axis A2 in the second direction R2, the decrease in the gap C can be reduced. That is, a larger space can be secured. As a result, even if the interval of the air gap C in the use posture is not designed to be large from the beginning, that is, while the curtain plate 4 is arranged at a high position in the use posture, the curtain plate 4 changes from the state of the use posture to the contact state. , it is possible to ensure the interval of the gap C to be equal to or greater than the predetermined interval d1min. Here, the predetermined interval d1min is a dimension such that the user's finger is not caught between the top plate 1 and the curtain plate 4 while the top plate 1 is rotating. As described above, the curtain plate 4 in the use posture reaches the contact state.

As shown in FIG. 10B, the top plate 1 is in a substantially upright posture by bringing the curtain plate 4 into contact. By further rotating the top plate 1 in the first direction R1 about the top plate rotation axis A from this state, the top plate 1 assumes the standing posture and the curtain plate 4 assumes the retracted posture, as shown in FIG. 10C. Become. By operating the operating lever 101, the rotation of the top plate 1 about the top plate rotation axis A is restricted, and the top plate 1 is locked in the standing posture. The operation of each part from the contact state of the curtain plate 4 to the retracted posture will be described below.

When the top plate 1 is further rotated in the first direction R1 about the top plate rotation axis A while the curtain plate 4 is in the abutting state, the first shaft portion S1 rotates about the top plate rotation axis A in the first direction. By rotating in one direction R1, the curtain plate 4 rotates in the second direction R2 with the lower end portion as a fulcrum. As a result, as shown in FIG. 10C, the front surface of the panel 4 is in contact with the leg 2 so that the rear edge of the support leg 21 of the leg 2 is aligned. As a result, the rotation of the curtain plate 4 about the top plate rotation axis A in the first direction R1 is restricted. In this state, when the top plate 1 is further rotated in the first direction R1 around the top plate rotation axis A, the reaction force from the legs 2 is applied through the curtain plate 4 and the curtain plate 4 bracket. It acts on the second shaft portion S2 of the link 6. As a result, a moment acts on the link 6, and the link 6 begins to rotate in the second direction R2 about the second rotation axis A2. Furthermore, in a state in which the front surface of the curtain plate 4 is in contact along the rear edge of the support leg 21 of the leg 2, the curtain plate 4 rotates in the first direction R1 around the first rotation axis A1. As a result, the curtain board 4 rises along the rear edge of the support leg 21 of the leg 2 . As the link 6 rotates about the second rotation axis A2 in the second direction R2, the curtain plate 4 rotates about the top plate rotation axis A in the first direction R1. is allowed to approach the top plate 1 relatively. In other words, the top plate 1 rotates about the top plate rotation axis A in the first direction by rotating the link 6 about the second rotation axis A2 in the second direction R2 after the curtain plate 4 reaches the contact state. It is allowed to rotate to R1 and approach the curtain board 4. - 特許庁As a result, the top board 1 reaches the standing posture completely. When the top plate 1 reaches the standing posture, the curtain plate 4 reaches the storage posture stored between the top plate 1 and the legs 2. - 特許庁When the curtain plate 4 is in the retracted state, it abuts on the support leg 21 of the leg 2 along the rear edge of the support leg 21 of the leg 2 and leaves a slight gap with respect to the lower surface of the top plate 1. facing the top plate 1.

In addition, the stay 8 rotates in the first direction R1 around the third rotation axis A3 during the operation from the contact state of the curtain plate 4 to the retracted posture. As shown in FIG. 11C, the fourth axial hole H4 extends in the second guide direction G2 opposite to the first guide direction G1 with respect to the fourth shaft portion S4 at the second position. , the curtain plate 4 is allowed to rise along the rear edge of the support leg 21 of the leg 2 . The fourth shaft portion S4 moves in the second guide direction G2 in the fourth shaft hole H4 as the stay 8 rotates. Reach the first position. The fourth shaft slot H4 is designed to allow the fourth shaft portion S4 to reciprocate between the first position and the second position when the curtain plate 4 changes from the use posture to the storage posture.

As described above, the stack table 100 changes from the used state to the folded state. In order to change the stack table 100 from the folded state to the usable state, the above operations should be reversed. If the rotation of the link 6 about the second rotation axis A2 in the second direction R2 were restricted, the front surface of the curtain plate 4 would contact the rear edge of the support leg 21 of the leg 2. Further rotation of the top plate 1 in the first direction R1 about the top plate rotation axis A from the contact state is restricted, so that the top plate 1 cannot approach the curtain plate 4 any further. On the other hand, in the stack table 100 according to the present embodiment, the link 6 can rotate about the second rotation axis A2 in the second direction R2 after the curtain plate 4 reaches the contact state. The top plate 1 can be brought closer to the curtain plate 4 from the contact state. As a result, compared to the case where the rotation of the link 6 about the second rotation axis A2 in the second direction R2 is restricted, in the stack table 100 in the folded state, a The front-to-rear width can be reduced. That is, the storage efficiency in the folded state can be improved. In this manner, the stack table 100 according to the present embodiment is configured such that the top board 1 and the curtain board 4 are kept in contact with each other in the process of changing the top board 1 from the horizontal posture to the upright posture. can be ensured to be equal to or greater than the predetermined interval d1min, it is possible to prevent an intervening object such as a user's finger from being caught between the top plate 1 and the curtain plate 4 . In addition, when the top plate 1 is in the upright posture, the top plate 1 and the curtain plate 4 can be brought close to each other, so that the storage efficiency of the stack table 100 in the folded state can be improved.

Furthermore, the stack table 100 according to the present embodiment is configured so that the link 6 can further rotate in the second direction R2 around the second rotation axis A2 in the folded state. FIG. 14 shows a state in which a user's finger is sandwiched between the panel board 4 and the support leg 21 of the leg 2 on the stack table 100 . When the stack table 100 is in the folded state, the link 6 can further rotate in the second direction R2 about the second rotation axis A2. Moreover, as described above, a slight gap is formed between the curtain plate 4 and the top plate 1 . As a result, as shown in FIG. 14, when the stack table 100 is in the folded state or in the process of changing the stack table 100 from the used state to the folded state, there is a gap between the curtain plate 4 and the support leg 21. Even if an intervening object such as a user's finger is caught, the link 6 rotates about the second rotation axis A2 in the second direction R2 to allow the curtain board 4 to escape to the rear gap. can. As a result, it is possible to prevent a large clamping force from acting on an inclusion sandwiched between the curtain plate 4 and the support leg 21 .

[Action/effect]
As described above, in the stack table 100 according to the present embodiment, when the top plate 1 is rotated in the first direction R1 about the top plate rotation axis A in order to switch the top plate 1 from the horizontal posture to the standing posture, Immediately before the tabletop 1 reaches the standing posture, the curtain board 4 comes into contact with the rear edge of the support leg 21 of the leg 2 . Then, when the top plate 1 is further rotated in the first direction R1 about the top plate rotation axis A after the curtain plate 4 is in the contact state, the link 6 rotates about the second rotation shaft A2 in the second direction. It rotates in the direction R2, and the top plate 1 approaches the curtain plate 4 so as to face it. According to this, in the process of changing the top plate 1 from the horizontal posture to the standing posture, the link 6 rotates about the second rotation axis A2 in the second direction R2 after the curtain plate 4 comes into contact, The top plate 1 approaches the curtain plate 4. As a result, a predetermined gap can be secured between the top plate 1 and the curtain plate 4 until the curtain plate 4 reaches the contact state. Then, when the top plate 1 assumes the standing posture, the interval between the top plate 1 and the curtain plate 4 can be shortened. Therefore, in the process of changing the top plate 1 from the horizontal posture to the upright posture, it is possible to prevent an intervening object such as a user's finger from being caught between the top plate 1 and the curtain plate 4, and the top plate 1 can be raised up. In the posture, the front-to-rear width of the stack table 100 above the grounding leg 22 can be significantly reduced. That is, the stack table 100 according to the present embodiment can improve storage efficiency while preventing finger pinching.

In addition, the stack table 100 according to the present embodiment prevents the link 6 from rotating in the first direction R1 about the second rotation axis A2 by the top plate-side bracket 5 when the curtain plate 4 is in the use posture. Regulating. According to this, when the curtain plate 4 is in the use posture, the rotation of the link 6 in the first direction R1 about the second rotation axis A2 is restricted by the weight of the curtain plate 4 and the weight of the link 6 itself. . As a result, the usage posture of the panel 4 can be maintained while the height position of the panel 4 is maintained.

Further, in the stack table 100 according to the present embodiment, the link 6 can further rotate in the second direction R2 about the second rotation axis A2 when the curtain plate 4 is in the retracted posture. According to this, even if an intervening object such as a user's finger is caught between the curtain plate 4 and the support leg 21 of the leg 2, the link 6 can be rotated around the second rotation axis A2 by the second rotation axis A2. Since it rotates in the direction R2, the curtain board 4 can escape to the rear. As a result, it is possible to prevent a large clamping force from acting on an inclusion sandwiched between the curtain plate 4 and the supporting leg 21 of the leg 2 .

In the stack table 100 according to the present embodiment, the guide walls H43, H43, which are the inner edges of the fourth shaft long hole H4, are brought into contact with the fourth shaft portion S4 of the stay 8, thereby allowing the curtain plate 4 to contact from the use posture. Rotation of the curtain plate 4 about the first rotation axis A1 in the first direction R1 is restricted until the state is reached. The fourth axially elongated hole H4 allows relative movement of the fourth axial portion S4 with respect to the fourth axially elongated hole H4 while the curtain plate 4 is in the use posture to the abutting state. ing.

According to this, the curtain plate side bracket 7 is attached by the relative movement of the fourth shaft portion S4 with respect to the fourth axial slot H4 during the period from the state in which the curtain plate 4 is in the use posture to the contact state. restrained from being forced. As a result, the curtain plate 4 is prevented from being lifted from the state in which the curtain plate 4 is in the use posture to the contact state. A predetermined or more space can be secured between the plate 1 and the curtain plate 4.例文帳に追加

[Variation]
FIG. 15 is a diagram showing a stack table 100A according to a modification of this embodiment. A stack table 100</b>A according to the modified example uses components other than the top plate 1 and the legs 2 in common with the stack table 100 . The stack table 100A has a front-rear width W2 of the top plate 1A that is shorter than a front-rear width W1 of the top plate 1 in the stack table 100. As shown in FIG. In the stack table 100A, the length of the stay 8 is adjusted so that the distance between the third rotation axis A3 and the fourth rotation axis A4 is the second stay length X2. The length of the stay 8 is different from that of the stack table 100 in which the distance between and the fourth rotation axis A4 is the first stay length X1. Also, in the stack table 100A, the length of the grounding leg 22A of the leg 2A is shorter than the length of the grounding leg 22 of the leg 2 in the stack table 100 corresponding to the front-rear width W2 of the top plate 1A. . However, the stack table 100A may use the legs 2 like the stack table 100. FIG. The stack table 100 and the stack table 100A according to the present embodiment can be applied to the top plate 1 having different front-to-rear widths while keeping members other than the top plate 1 in common. The stack table 100A will be described below with respect to the stack table 100A.
The explanation will focus on the differences between the

As shown in FIG. 15, in the stack table 100A as well, in order to secure leg space in the use state, the curtain board 4 is positioned in front of the stack table 10A with a distance of d2 from the rear end of the top board 1A, as in the case of the stack table 100. are offset to Also, the distance between the upper end of the curtain plate 4 and the top plate 1A is d1, like the stack table 100. As shown in FIG. As described above, in the stack table 100A, when the relative positional relationship of the curtain plate 4 with respect to the top plate 1A is to be the same as the relative positional relationship of the curtain plate 4 with respect to the top plate 1 in the stack table 100, Since the front-rear width W2 of the plate 1A is shorter than the front-rear width W1 of the top plate 1, the distance between the curtain plate 4 and the legs 2 in the state of use is shorter than in the case of the stack table 100. - 特許庁Therefore, in the stack table 100A, it is necessary to make the distance between the third rotation axis A3 and the fourth rotation axis A4 shorter than in the case of the stack table 100. FIG. In the stack table 100A, the stay 8 is connected to the third rotation shaft A3 by engaging the male side engaging portion 82 of the male side stay member 8A with the second female side engaging portion 862 of the female side stay member 8B. A second stay length X2, which is shorter than the first stay length X1 in the case of the stack table 100, is set to the distance from the fourth rotation axis A4. Thus, the stack table 100A can respond to changes in the distance between the third rotation axis A3 and the fourth rotation axis A4 with respect to the stack table 100. FIG.

Furthermore, the stack table 100 and the stack table 100A according to the present embodiment can share members other than the top plate 1 by means of the fourth axial long hole H4 formed in the curtain plate side bracket 7 . FIG. 16 is a diagram for explaining the rotating shaft of the stay 8 in the stack table 100A according to the modification. In FIG. 16, illustration of the stay 8 is omitted for the sake of convenience. As described above, the stack table 100A shares members other than the top plate 1A with the stack table 100. Therefore, the position of the third rotation axis A3 in the reinforcing member 24 of the leg 2 is common to that of the stack table 100. be. It should be noted that the rotation axis of the stay 8 with respect to the leg 2 is desirably provided on the center line L1 in the width direction of the reinforcing member 24 in consideration of the left-right symmetry of the stack table 100. Therefore, the third rotation axis A3 is provided on the center line L1. Here, reference P1 in FIG. 16 indicates the position of the arc center of the lower wall H42 in the fourth axial long hole H4 when the curtain plate 4 is in the use posture. P1 is the ideal position of the fourth pivot shaft A4 when the curtain plate 4 is in the use posture. In FIG. 16, P2 indicates the position of the arc center of the lower wall H42 in the fourth axial slot H4 when the curtain plate 4 is in the retracted posture. P2 is the ideal position of the fourth rotation shaft A4 when the curtain plate 4 is in the retracted posture. Further, in FIG. 16, L3 indicates the perpendicular bisector of straight line L2 connecting P1 and P2. At this time, as shown in FIG. 16, the third rotation axis A3 does not exist on the straight line L3. Here, straight line L3 is a set of points located at equal distances from P1 and P2. Therefore, the ideal position of the third rotation axis A3 is on the straight line L3, more preferably at the intersection point P3 between the straight lines L3 and L1. On the other hand, as shown in FIG. 16, the third rotation shaft A3 is provided apart from P3. Therefore, the distance between P1 and the third rotation axis A3 is different from the distance between P2 and the third rotation axis A3. For example, when the second stay length X2 is equal to the distance between P1 and the third rotation axis A3, and the stay 8 is provided on the third rotation axis A3, the fourth rotation is performed when the curtain plate 4 is in the retracted posture. The position of axis A4 is away from the ideal position P2. On the other hand, the stack table 100A allows the fourth pivot shaft A4 to deviate from the ideal position by causing the fourth shaft portion S4 of the stay 8 to float within the fourth shaft long hole H4. . That is, the stack table 100 and the stack table 100A according to the present embodiment pivotally support the stay 8 through the fourth shaft elongated hole H4, thereby changing the front-to-rear width of the top plate 1 to change the rotation axis of the stay 8. deviation can be accommodated. That is, even if the front-rear width of the top plate 1 is changed, the third rotation shaft A3 can be used in common. Furthermore, the stay 8 is configured so that the distance between the third rotation axis A3 and the fourth rotation axis A4 can be adjusted. As a result, the front and rear width of the top plate 1 can be changed while the members other than the top plate 1 remain the same, which is excellent in terms of cost.

Various contents described above can be combined as much as possible without departing from the technical idea of the present invention. The stack table 100 according to this embodiment may have the link 6 fixed. That is, the stack table 100 does not have to rotate the link 6 around the second rotation axis A2. For example, by integrally molding the link 6 and the top plate side bracket 5, the top plate 1 is fixed to the lower surface of the top plate 1 and the curtain plate 4 is pivoted via the first rotation shaft (upper curtain plate rotation shaft) A1. It is good also as a curtain plate support part to support. Even in this case, since the stay 8 is pivotally supported by the fourth axially elongated hole H4 provided in the curtain plate-side stay support portion 73, the curtain plate 4 changes from the use posture to the contact state. Relative movement of the fourth shaft portion S4 with respect to the fourth shaft long hole H4 is permitted until the time of As a result, the curtain plate side bracket 7 is biased by the relative movement of the fourth shaft portion S4 with respect to the fourth axial slot H4 during the period from the state in which the curtain plate 4 is in the use posture to the contact state. is suppressed. As a result, it is possible to reduce the load generated by the fourth shaft portion S4 on the panel 4 and the panel supporting portion while the panel 4 is in the use posture and is in the abutment state. Further, as described above, since the fourth axially elongated hole H4 is provided in the curtain plate side stay support portion 73, it is possible to cope with the displacement of the rotation axis of the stay 8 due to the change in the front-to-rear width of the top plate 1. can do. Therefore, even if the front-rear width of the top plate 1 is changed, the third rotating shaft (stay rotating shaft) A3 can be used in common.

1 Top plate 2 Legs 3 Beam (main axis)
4 Curtain plate 5 Top plate side bracket 6 Link 7 Curtain plate side bracket 8 Stay 10 Top plate rotating mechanism 20 Curtain plate control mechanism 30 ... cord hole 40 ... wiring tray 50 ... shelf 100 ... stack table

Claims (4)

left and right legs,
While being supported by the leg via a main shaft provided in the upper part of the leg, by rotating about the main shaft in a first direction, it can move along the rear edge of the leg from a substantially horizontal position. A top plate that can be switched to a standing posture,
A usage posture in which the top plate hangs below the top plate and to the rear of the legs with a predetermined gap from the top plate when the top plate is in the horizontal posture; A curtain plate that changes the posture between a storage posture in which the leg body is in contact with the rear edge of the leg when the storage posture is stored, and
a curtain plate control mechanism that controls the attitude of the curtain plate by connecting the top plate and the curtain plate and interlocking with the rotation of the top plate;
A stack table comprising
The curtain plate control mechanism is
a panel support portion that is fixed to the lower surface of the top panel and pivotally supports the panel via an upper panel rotation shaft that is provided parallel to the main shaft;
a stay pivotally supported on the leg via a stay rotation shaft;
a curtain plate-side stay support portion fixed to the front surface of the curtain plate and pivotally connected to the stay via a lower curtain plate rotation shaft positioned below the upper curtain plate rotation shaft;
The lower curtain plate rotating shaft is formed by a shaft portion provided on the stay,
The curtain plate side stay support portion has a bearing hole for receiving the shaft portion,
the bearing hole allows relative movement of the shaft with respect to the bearing hole;
stack table. The curtain plate-side stay support portion restricts rotation of the curtain plate in the first direction about the upper curtain plate rotation axis by bringing the inner edge of the bearing hole into contact with the shaft portion.
A stack table according to claim 1. When the top plate is rotated about the main shaft in the first direction in order to switch the top plate from the horizontal posture to the standing posture, the curtain plate is moved until the top plate reaches the standing posture. is in contact with the trailing edge of the leg,
The bearing hole allows relative movement of the shaft portion with respect to the bearing hole from the state in which the curtain plate is in the use posture to the contact state.
3. A stack table according to claim 1 or 2. The stay is formed such that its length can be changed,
A stack table according to any one of claims 1 to 3 .

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