JP6425880B2 - Stack table and lever - Google Patents

Description

  The present invention relates to the technology of a stack table and a lever.

  There is a stack table which can freely change the top plate into a horizontal state and a vertical state, and by arranging the top plate in a vertical state, a plurality of tables can be stacked horizontally and arranged. For example, Patent Document 1 discloses a parallel stack table which can store a top plate vertically in parallel and in parallel.

Registered Utility Model No. 3056788

  A table called a stack table can be changed between a use state (for example, a state in which the top is horizontal or near) and a folded state (for example, a state in which the top is vertical or near to). There is a table in which a plurality of stack tables can be stacked horizontally and arranged by folding them. The stack table includes one called a parallel stack table and one called a side stack table. In the so-called parallel stack table, when stacking a plurality of stack tables with the top plate folded, the plurality of stack tables can be aligned in a straight line in the depth direction. In so-called side stack tables, when stacking a plurality of stack tables with the top plate folded, the adjacent stack tables are aligned in the depth direction of the stack tables while being shifted in the width direction of the tables by at least the width of the legs. be able to.

  The stack table can be changed between the used state and the folded state as described above, but this change needs to be made by the user. The stack table is provided with an operation portion such as a lever for releasing the use state or the folded state, and the user operates the operation portion to bring the stack table into the use state or the folded state. . Here, since the operation unit is often provided on the back side of the top plate, it has been feared that it is difficult for the user to find the operation unit in the conventional stack table. In addition, even if the conventional stack table can find the operation unit, it has been feared that the operation method such as in which direction it should be pulled or pushed may be unclear. In addition, there has been a demand for development of a stack table that can be put into use or folded with simpler operation.

  An object of the present invention is to provide a technique relating to a stack table which can be easily used or folded in comparison with the prior art in view of the above problems.

  In order to solve the above-described problems, the present invention is a flat portion in which a display indicating the operation method of the lever is disposed at the tip of the main body portion of the lever (operation portion). It was decided to provide a flat portion to point.

More specifically, the present invention is a stack table that can be changed between the use state and the folded state, the top plate being in the horizontal state in the use state and standing up in the folded state, and the back side of the top plate It is provided on both sides and fixed to the leg supporting the top plate and the back side of the top plate, and is rotatably connected to the upper portion of the leg so that the top plate is in a horizontal state or an upright state A lock mechanism for maintaining the top plate in a horizontal state or an upright state; and a lever connected to the lock mechanism to change the stack table to the use state or the folded state, the lever being a main body The flat end of the base is pivotably connected to the lock mechanism, and the tip of the main body is a flat part with an indication indicating the operation method of the lever, and the stack table is at the upper side in the folded state. Flat point A.

  In the stack table according to the present invention, the flat portion is provided at the tip of the lever for changing the stack table to the use state or the folded state. The flat portion is labeled to indicate how to operate the lever, and the stack table points upward in the folded state. Therefore, particularly when the stack table is in the folded state, the flat portion of the lever is easily visible to the user, and the user can immediately confirm the presence of the lever and can also understand the operation method of the lever. Pointing upward means that the surface of the flat portion is in a horizontal state or close to it, and the surface of the flat portion faces upward. Further, the flat portion of the lever can suppress the detachment of the hand gripped from the main body when the user grips the main body of the lever. As described above, according to the stack table of the present invention, the use state or the folded state can be made easier than ever.

  In the use state, the top is in the horizontal state. The horizontal state does not have to be strictly horizontal on the top plate, and may be, for example, a state in which a writing instrument can be placed on the top plate, and includes a tilted state. In the folded state, the top plate is in the upright state. In the standing state, the top plate does not have to be strictly vertical, but the depth length of the top plate is shortened by the rising of the top plate as compared to the horizontal state, and the stack tables are horizontally stacked and arranged. Including possible states. Although the depth of the top is the shortest when the top is vertical, the top may be inclined. The stack table can be a so-called parallel stack table capable of accommodating a plurality of stack tables in a straight line in the depth direction when stacking a plurality of stack tables with the top plate folded. When stacking a stack table with the top plate folded, the stack table is overlapped in the depth direction of the stack table while shifting the adjacent stack table by at least the width of the leg in the width direction of the stack table. It can be a so-called side stack table which can be arranged.

  The lever can be configured to release the locked state of the lock mechanism by, for example, pivoting the proximal end as an axis and bringing the distal end side provided with the flat portion closer to the top plate side. The display indicating the operation method of the lever of the flat portion can be configured by, for example, an arrow, a picture, a character, a symbol, or the like indicating that the tip end side of the lever approaches the top plate side. Also, by making the lever different in color from the back surface of the top plate, the user can more easily understand the position of the lever and the operation method of the lever.

  Here, as an example, the lever may have a plate shape, and the flat portion may be formed by bending the tip of the main body. The plate-like shape increases the surface area of the lever compared to, for example, a rod-like shape, makes the lever more noticeable, and allows the user to more easily understand the position of the lever and the operation method of the lever. it can. In addition, when the surface area of the lever is increased, the lever can be easily gripped and the operability can be improved.

Further, as an example, the lever is connected to the lock mechanism on the back side of the top plate so as to face the back surface of the top plate, and at least the side opposite to the surface facing the top plate in the main body portion A plurality of concave portions or convex portions may be provided on the face. The levers may be provided on both sides of the top plate, or may be provided on one side. The recess or the protrusion functions as a non-slip member, so that the lever can be easily grasped and the operability is further improved. The recess or protrusion may be circular, polygonal, line-shaped or the like. Also, the lever may bend the main body. For example,
By curving the main body in a direction away from the top plate, the gap between the lever and the top plate can be increased as compared to the case where the lever is flat. As a result, for example, it becomes difficult to hold a hand between the lever and the top plate.

  In addition, the stack table according to the present invention may further include a curtain plate provided on the back side of the top plate. Further, the stack table according to the present invention may have a caster on the lower part of the leg. Further, the stack table according to the present invention may be configured to include an adjuster at the lower part of the leg for adjusting the height of the stack table. In addition, the stack table according to the present invention may be configured to include both a caster and an adjuster.

  Here, the present invention can also be specified as the lever of the stack table described above. For example, the present invention is a lever of a stack table that can be changed between the use state and the folded state, wherein the stack table is in the horizontal state in the used state and in the erected state in the folded state; It is provided on both sides of the back side of the top plate and fixed to the leg supporting the top plate and the back side of the top plate so that the top plate can be pivoted with the upper portion so that the top plate becomes horizontal or upright. And a lock mechanism for maintaining the top plate in a horizontal state or an upright state, and a lever connected to the lock mechanism for changing the stack table to the use state or the folded state, The lever is a flat portion in which a base end of the main body is rotatably connected to the lock mechanism, and a tip indicating the operation method of the lever is attached to an end of the main body, and the stack table is folded. A lever having a flat portion that points upwards in the state.

  ADVANTAGE OF THE INVENTION According to this invention, the technique regarding the stack table which can be made into a use state or a folding state more easily than before can be provided.

FIG. 1 is a perspective view of the side stack table in use according to the embodiment as viewed from the back side. FIG. 2 is a perspective view of the side stack table in use according to the embodiment as viewed from the front side. FIG. 3 is a perspective view of the folded side stack table according to the embodiment as viewed from the back side. FIG. 4 is a perspective view of the folded side stack table according to the embodiment as viewed from the front side. FIG. 5 shows a side view of the side stack table in use according to the embodiment. FIG. 6 shows a side view of the side stack table in the folded state according to the embodiment. FIG. 7 shows a perspective view of the folded state of the side stack table according to the embodiment. FIG. 8 shows a side view of the folded state of the side stack table according to the embodiment. FIG. 9 is a perspective view of the lever of the side stack table according to the embodiment as viewed from above. FIG. 10 is a perspective view of the lever of the side stack table according to the embodiment as viewed from the lower side. FIG. 11 shows a front view of the flat portion of the lever of the side stack table according to the embodiment. FIG. 12 is a view for explaining an operation of changing the side stack table according to the embodiment from the use state to the folded state. FIG. 13 is a perspective view of the lift-up caster in the released state according to the embodiment as viewed from the front side. FIG. 14 is a perspective view of the lift-up caster in the released state according to the embodiment as viewed from the back side. FIG. 15 is a perspective view of the fixed lift-up caster according to the embodiment as viewed from the front side. FIG. 16 is a perspective view of the fixed lift-up caster according to the embodiment as viewed from the back side. FIG. 17 is a longitudinal sectional view of the lift-up caster in the released state according to the embodiment, cut in the width direction. FIG. 18 is a longitudinal sectional view of the caster in the released state according to the embodiment cut in the depth direction. FIG. 19 is a view for explaining an operation of changing the caster according to the embodiment from the release state to the fixed state. FIG. 20 is a perspective view of the fixed lift-up caster according to Modification 1 as viewed from the front side. FIG. 21 is a perspective view of the fixed lift-up caster according to the second modification viewed from the front side. FIG. 22 is a perspective view of the fixed lift-up caster according to the modification 3 as viewed from the front side. FIG. 23 is a perspective view of the fixed lift-up caster according to the fourth modification viewed from the front side. FIG. 24 is a perspective view of the fixed lift-up caster according to the fifth modification viewed from the front side. FIG. 25 is a perspective view of the fixed lift-up caster according to the sixth modification viewed from the front side.

  Next, an embodiment of the present invention will be described based on the drawings. Note that the embodiments described below are examples for carrying out the present invention, and the present invention is not limited to the embodiments described below.

Embodiment
<Overview>
The side stack table 1 according to the embodiment can be changed into the use state as shown in FIGS. 1, 2 and 5 and the folded state as shown in FIGS. 3, 4 and 6. Further, as shown in FIG. 7 and FIG. 8, the side stack table 1 according to the embodiment can be arranged so as to be stacked horizontally in the folded state. By operating the lever 5 provided on the side of the side stack table 1 and on the back side of the top plate 2, it is possible to change from the use state to the folded state or from the folded state to the used state. Further, the side stack table 1 according to the embodiment includes the lift-up caster 7a, and by operating the lift-up lever 71, the fixed state can be changed to the released state, or the released state can be changed to the fixed state. . Hereinafter, in the present specification, the curtain plate 6 side of the side stack table 1 is defined as “back side”, and the opposite side is defined as “front side”, unless otherwise noted. The direction orthogonal to the direction of is defined as "side". Further, the top 2 side of the side stack table 1 is defined as “upper”, and the leg 3 side is defined as “lower”.

<Configuration>
The side stack table 1 according to the embodiment includes a top 2, a leg 3, a lock mechanism 4, a lever 5, a slat 6, and a caster 7.

  The top 2 is rectangular and is supported by legs 3 provided on both sides in the width direction (longitudinal direction). In detail, the table-top 2 is connected to the leg 3 via the lock mechanism 4 fixed to the back surface of the table-top 2 and supported by the leg 3. The top 2 is in the horizontal state in the use state as shown in FIG. 1, FIG. 2, and FIG. In the horizontal state, the top 2 does not have to be strictly horizontal as long as, for example, a writing instrument can be placed on the top 2. Therefore, for example, the top 2 may be inclined so that the near side (the opposite side of the shutter plate 6) is lower than the back side. Further, the top 2 is in the upright state in the folded state as shown in FIG. 3, FIG. 4 and FIG. It is not necessary for the top 2 to be strictly vertical, and the top 2 is shorter than in the horizontal state, so that the depth of the top becomes shorter, and the side stack table 1 is made horizontally. It includes a state in which it can be stacked and arranged. Although the depth length of the top is shortest when the top 2 is vertical, the top 2 may be inclined as in the present embodiment.

  The legs 3 support the top 2. The legs 3 are constituted by two columns 31 provided on both sides of the top plate 2 and horizontal members 32 connected to the lower ends of the columns 31 and extending in the depth direction. The caster 7 is connected to both ends of the horizontal member 32. A hinge 33 is provided in the vicinity of the upper end of the support 31, and the lock mechanism 4 to which the top plate 2 is fixed is rotatably connected via the hinge 33. The leg 3 according to the embodiment has a rectangular cross section in both of the support 31 and the horizontal member 32, but may have another shape such as a circle. Moreover, the leg 3 which concerns on embodiment is only an example, and can use suitably well-known legs, such as a thing with which a support | pillar inclines, and a support | pillar branched and a reverse Y-shaped thing.

  The lock mechanism 4 is fixed to the back side of the top plate 2 and rotatably connected to a hinge 33 provided in the vicinity of the upper end of the column 31 of the leg 3 so that the top plate 2 is in use or folded. The top 2 is maintained in use or in a fixed state. As shown in FIG. 12, the lock mechanism 4 is covered by a cover 41, and a lock hook 43 having a groove 42 in the inside, a first lock pin 44, a second lock pin 45, a coil spring 46, connection A member 47 and a shaft 48 are provided. The locking hook 43 is pivotable around the shaft rod 48 in conjunction with the operation of the lever 5. The locking hook 43 is maintained in use by engagement of the groove 42 with the first locking pin 44. In addition, the locking hook 43 maintains the folded state by the groove 42 engaging with the second locking pin 45. The locking hook 43 is biased in the direction of the first locking pin 44 and the second locking pin 45 by a coil spring 46, and is configured to be able to maintain the use state or the folded state. The shaft 48 extends in the width direction of the side stack table, and the locking hooks 43 on both sides rotate in conjunction.

As shown in FIG. 5, FIG. 6, FIG. 9 to FIG. 11, etc., the lever 5 changes the side stack table 1 to the use state or the folded state. The lever 5 is a flat portion 55 in which a base end 52 of the main body portion 51 is rotatably connected to the lock mechanism 4 and a tip 54 of the main body portion 51 has an indication 54 indicating how to operate the lever 5 The side stack table 1 has a flat portion 55 that points upward in the folded state. Pointing upward means that the surface of the flat portion 55 is in a horizontal state or close to it, and the surface of the flat portion 55 is directed upward. The lever 5 according to the embodiment is in a plate shape, and is curved such that the main body portion 51 expands in the direction away from the top plate 2, and the flat portion 55 is formed by bending the tip 53 of the main body portion 51. There is. On the flat portion 55, as a display 54, a triangle and a quadrangle are combined, and a pictogram for imaging an arrow as a whole is printed. The vertex of the triangle, in other words, the arrow points to the back of the top 2, so that it can be immediately understood that the operation direction of the lever 5 is directed to the back of the top 2 as the operation method of the lever 5. It is done. Further, in the use state, the flat portion 55 points the surface slightly above the horizontal direction, and in the folded state, the surface points above. Pointing upward means that, as described above, the surface of the flat portion 55 is in or near the horizontal state, and pointing slightly above the horizontal direction means that the surface of the flat portion 55 is slightly inclined in comparison to the vertical state. It means that the surface of the flat portion 55 is slightly upward than the horizontal direction. Further, the lever 5 is configured in orange while the cover 41 of the lock mechanism 4 is gray, and is configured to be easily distinguished from other members. Further, the lever 5 is connected to the lock mechanism 4 on both sides of the back side of the top 2 so as to face the back of the top 2, and the surface of the main body 51 opposite to the surface facing the top 2. Are provided with a plurality of circular projections 56.

  As shown in FIGS. 1 to 6 and the like, the curtain plate 6 is rectangular and covers the back side of the side stack table 1. The curtain plate 6 according to the embodiment is configured to cover approximately the upper half of the floor to the top plate 2. Further, the curtain plate 6 is coupled to a curtain upper upper hinge 61 formed on the back side of the cover 41 of the lock mechanism 4 on both sides of the upper end. Further, the curtain plate 6 is rotatably connected to a curtain plate support bar 62 whose lower ends on both sides are connected to the support 31. One end of the support rod 62 for the curtain is rotatably connected to the support 31, and the other end is rotatably connected to the lower end of the curtain 6. Therefore, the curtain plate 6 is movable in conjunction with the top plate 2 and is substantially orthogonal to the top plate 2 in the use state, but adjacent to the top plate 2 and parallel to the top plate 2 in the folded state It becomes. Further, in accordance with the planar shape of the spherical recess 72 formed in the lift-up lever 71, a plurality of circular projecting portions 63 projecting to the depth side are formed in the curtain plate 6 according to the embodiment.

  The caster 7 according to the embodiment is connected to the lift-up caster 7a having a stopper function having a fixed state and a release state connected to the front end of the horizontal member 32, and connected to the rear end of the horizontal member 32. The two types of casters of the normal caster 7b which does not have a stopper function are used. The latter is a general-purpose caster, so an explanation is omitted. The lift-up caster 7a is in a released state where the wheel can freely rotate as shown in FIGS. 13 and 14, and fixed as the caster is locked as shown in FIGS. 15 and 16 (rotation of the wheel is restricted). And the state.

  As shown in FIGS. 13 to 19 and the like, the lift-up caster 7a includes a mounting bolt 72, an adjuster 73, a wheel 74, a lift-up lever 71, and a stop pad 75. The mounting bolt 72 is connected to a bolt hole (not shown) provided on the lower surface of the horizontal member 32 of the leg 3. The adjuster 73 is fixed to the mounting bolt 72 and can be finally moved in the vertical direction to allow adjustment of the height position of the top 2. The adjuster 73 according to the embodiment is disk-shaped, and a through hole screwed to the mounting bolt 72 is provided at the center, and a plurality of longitudinal grooves functioning as a slip stopper are formed on the circumferential surface. When the adjuster 73 is rotated clockwise, the adjuster 73 moves upward, and the top plate 2 can be made higher than before movement. In addition, when the adjuster 73 is rotated counterclockwise, the adjuster 73 moves downward, and the top plate 2 can be lowered compared to before movement.

  Two wheels 74 are provided on both sides of the lift up lever 71 and the stop pad 75, and are rotatable about the rotation shaft 76.

The lift up lever 71 is rotatable around the rotation shaft 76 independently of the wheel 74. The lift-up lever 71 has a non-exposed portion connected to the stop pad 75 via a link mechanism (not shown) inside the lift-up caster 7a. Therefore, with the rotation of the lift up lever 71, the stop pad 75 can be raised and lowered. The lift-up lever 71 (exposed portion) is plate-shaped, and a spherical depression 77 is formed on the surface. The spherical depression 77 is intended to be operated by a finger, and the finger of the hand fits in the depression 77, whereby the lift-up lever 71 can be easily pushed down. Further, at the front end of the rear surface of the lift up lever 71, a projection 78 projecting downward is formed. The protrusion 78 is also intended to be operated by a finger, and the finger can be hooked on the protrusion 78, so that the lift-up lever can be easily pushed up. The lift up lever 71 is pointing obliquely upward in the released state. Although the lift-up lever 71 points obliquely downward in the fixed state, a space sufficient for inserting a finger is formed between the lift-up lever 71 and the floor surface. Therefore, the lift up lever 71 can be easily pushed up. Further, the lift-up lever 71 is configured in orange with respect to the black lift-up caster 7a, so that it can be easily identified from the surroundings.

  The stop pad 75 can move up and down as the lift up lever 71 pivots. The stop surface 75 of the stop pad 75 is located above the lowermost portion of the wheel 74 in the release state where the lift up lever 71 points obliquely upward. On the other hand, in the fixed state where the lift up lever 71 points obliquely downward, the stop surface 75 of the stop pad 75 is located below the lowermost portion of the wheel 74 and contacts the floor surface. That is, in the fixed state, the pad surface 79 of the stop pad 75 contacts the floor surface, and the wheel 74 floats in the air.

  Further, in the peripheral surface of the lift-up caster 7a, an arrow display 80 indicating an operation method is attached to a region exposed when the lift-up lever 71 is in a fixed state. In addition, the structure of the existing lift up caster 7a can be employ | adopted except the lift up lever 71 (exposed part) and arrow display among the lift up caster 7a mentioned above. Therefore, the details of the internal structure of the lift-up caster 7a, including the link mechanism connecting the lift-up lever 71 and the stop pad 75, will be omitted.

<Operation>
Next, the operation of the side stack table 1 according to the embodiment will be described together with the method of use. The side stack table 1 according to the embodiment is used with the top 2 in a horizontal state as shown in FIGS. 1 and 2 in a state of use as a table. On the other hand, when the side stack table 1 is accommodated, as shown in FIG. 3 and FIG. 4, the side stack table 1 according to the embodiment can be in a folded state in which the top plate 2 stands up. Since the table-top 2 stands up in the folded state, as shown in FIGS. 7 and 8, the side-stack table 1 can be arranged close to one another so that the table-tops 2 overlap. . Unlike the so-called parallel stack table, the side stack table 1 can not be arranged in a straight line in the depth direction, and the adjacent side stack table 1 is at least the width of the horizontal member 32 of the leg 3 of the side stack table 1 It is possible to overlap and arrange in the depth direction while shifting in the width direction.

  The change from the use state to the folded state and the change from the folded state to the used state are performed by operating the levers 5 provided on both sides of the side stack table 1. Hereinafter, based on FIG. 12, a change from the use state to the folded state will be described as an example. As shown in the upper left view of FIG. 12, in use, the groove 42 of the locking hook 43 is engaged with the first locking pin 44. The locking hook 43 is biased in the direction of the first locking pin 44 by a coil spring 46, and the use state is maintained. Here, when the lever 5 is operated so that the tip 53 of the lever 5 approaches the back surface side of the top plate 2, the locking hook 43 starts to rotate via the connecting member 47, and the groove 42 of the locking hook 43 The engagement of the first locking pin 44 is gradually released. Then, when the engagement between the groove 42 of the locking hook 43 and the first locking pin 44 is completely released, the top plate 2 can be pivoted freely. Therefore, the top plate 2 is provided in the vicinity of the upper end of the support 31 by moving the front side of the top 2 upward or moving the back side (the curtain plate 6 side) of the top 2 downward. It pivots about the hinge 33 and is in a gradually rising state. Further, the curtain plate 6 is rotatably connected to the lock mechanism 4 and the curtain plate support bar 62 connected to the support column 31, moves in conjunction with the top plate 2, and in the folded state, the ceiling plate 6 Adjacent to the plate 2 and in parallel with the top plate 2.

As shown in the lower right view of FIG. 12, when the groove 42 of the locking hook 43 is engaged with the second locking pin 45, the side stack table 1 is in the folded state. In the folded state, the locking hook 43 is biased in the direction of the second locking pin 45 by the coil spring 46, and the folded state is maintained. The change from the use state to the folded state may be performed reverse to the change from the used state to the folded state. That is, the lever 5 is operated such that the tip of the lever 5 approaches the back surface side of the top plate 2 and the engagement between the groove 42 of the locking hook 43 and the second locking pin 45 is released. It is possible to change from to the use state.

  It is preferable that the lift-up caster 7a be in a fixed state in both the use state and the folded state. That is, it is preferable that the lift-up casters 7a be in a fixed state except for moving the side stack table 1 and in a released state when moving.

  The change from the release state to the fixed state and the change from the fixed state to the release state are performed by operating the lift up lever 71 of the lift up caster 7a. Hereinafter, based on FIG. 19, the change from the release state to the fixed state will be described as an example. As shown in the upper view of FIG. 19, in the released state, the lift up lever 71 points obliquely upward, and the stop pad 75 has the pad surface 79 located above the lowermost part of the wheel 74. Therefore, in the released state, the wheel 74 is rotatable, and the lift-up caster 7a can be freely moved. When the lift-up lever 71 is depressed, the stop pad 75 is moved up and down gradually in conjunction with this. Then, when the lift up lever 71 is pivoted and fixed to a fixed position pointing obliquely downward, the stop pad 75 contacts the floor surface, and the wheel 74 floats in the air. On the other hand, when the lift up lever 71 is pushed up, the stop pad 75 is gradually lifted in conjunction with this. Then, when the lift up lever 71 is pivoted and fixed to a position in the released state pointing obliquely upward, the pad surface 79 is positioned above the lowermost part of the wheel 74, and the wheel 74 can be pivoted.

<Function effect>
In the side stack table 1 according to the embodiment described above, a pictogram for imaging an arrow as a whole is printed on the flat portion 55 of the lever 5 as a display 54 indicating the operating direction of the lever 5. The table 1 points upward in the folded state. Therefore, particularly in the folded state of the side stack table, the flat portion 55 of the lever 5 is easily visible to the user, and the user can immediately confirm the presence of the lever 5 and understand the operation direction of the lever 5 as well. Can. Further, the flat portion 55 of the lever 5 can suppress the detachment of the hand gripped when the user grips the main body portion 51 of the lever 5 from the main body portion 51. As described above, according to the stack table of the embodiment, the use state or the folded state can be made easier than ever. Further, the lever 5 is formed in an orange color different from the color of other parts of the side stack table 1. Therefore, the user can more easily understand the position of the lever 5 and the operation method of the lever 5. In addition, when the lever 5 is plate-shaped, the surface area of the lever 5 is increased, for example, as compared with the case where the lever 5 is rod-shaped, so that the lever 5 becomes more noticeable. Therefore, the user can more easily understand the position of the lever 5 and the operation method of the lever 5. In addition, when the surface area of the lever 5 is increased, it becomes easy to grip and the operability is also improved. Further, a plurality of convex portions 56 are provided on the back surface of the main body portion 51 of the lever 5 (the surface opposite to the surface facing the top plate 2), and the anti-slip effect is exhibited. Further, in the lever 5, the main body portion 51 is curved, and the gap between the lever 5 and the top plate 2 can be increased as compared with the case where the lever 5 is flat. As a result, for example, it becomes difficult to hold the hand between the lever 5 and the top 2.

  Although the side stack table has been described as an example in the above embodiment, the lever 5 is also applicable to a parallel stack table.

  Although the preferred embodiments of the present invention have been described above, the side stack table and lever according to the present invention are not limited to these, and may include combinations of these as much as possible.

  For example, the spherical depression 77 formed in the lift-up lever 71 according to the embodiment described above can be rectangular, polygonal or the like. FIG. 20 is a perspective view of the fixed lift-up caster according to Modification 1 as viewed from the front side. In the first modification, the lift-up lever 71 is formed with a rectangular recess 77 as an example of a polygonal recess. FIG. 21 is a perspective view of the fixed lift-up caster according to the second modification viewed from the front side. In the second modification, the lift-up lever 71 is formed with a hexagonal recess 77 as an example of a polygonal recess. FIG. 22 is a perspective view of the fixed lift-up caster according to the modification 3 as viewed from the front side. In the third modification, the lift-up lever 71 is formed with a plurality of linear grooves 77 extending from the front to the back. FIG. 23 is a perspective view of the fixed lift-up caster according to the fourth modification viewed from the front side. In the fourth modification, the lift-up lever 71 is formed with a plurality of linear grooves 77 extending in the width direction. FIG. 24 is a perspective view of the fixed lift-up caster according to the fifth modification viewed from the front side. In the fifth modification, the lift-up lever 71 is formed with a plurality of wavy grooves 77 extending from the front to the back. FIG. 25 is a perspective view of the fixed lift-up caster according to the sixth modification viewed from the front side. In the sixth modification, the lift-up lever 71 is formed with a plurality of wavy grooves 77 extending in the width direction. The depressions 77 may not be depressions (recesses) but may be projections projecting from the surface of the lift-up lever 77.

DESCRIPTION OF SYMBOLS 1 ... Side stack table 2 ... Top plate 3 ... Leg 31 ... Post 32 ... Horizontal member 33 ... Hinge 4 ... Locking mechanism 41 ... Cover 42 ... Groove 43: Locking hook 44: First locking pin 45: Second locking pin 46: Coil spring 47: Connecting member 48: Bar axis 5: Lever 51 · · · Main body 52 · · · base end 53 · · · tip 54 · · · display 55 · · · flat portion 6 · · · 板 61 · · · upper hinge for the curtain plate · · · · support rod for the curtain plate 7 Caster 7a Lift up caster 71 Lift up lever 72 Mounting bolt 73 Adjuster 74 Wheel 75 Stop pad 76 Rotating shaft 77・ Dent

Claims (4)

A stack table that can be changed between used and folded,
The top board which becomes horizontal state in use condition, and stands up state in folded condition,
Legs provided on both sides of the back side of the top plate for supporting the top plate,
A lock that is fixed to the back side of the top plate and rotatably connected with the upper portion of the leg so that the top plate is in the horizontal state or the standing state, and maintains the top plate in the horizontal state or the standing state Mechanism,
A plate-like lever connected to the lock mechanism to change the stack table to the use state or the folded state;
A proximal end of the main body is rotatably connected to the lock mechanism, and the distal end of the main body has a flat portion with an indication indicating how to operate the lever. The stack table is bent in an L shape from the main body portion so that the tip of the flat portion points downward in use, and the stack table is in a folded state on the surface of the flat portion to which the display is attached. At the same time as it is horizontal and facing upward,
Stack table. The lever is connected to the lock mechanism on the back side of the top plate such that the main body portion faces the back surface of the top plate,
The stack table according to claim 1, wherein the main body portion is curved such that a surface facing the back surface of the top plate is concave.   The lever is connected to the lock mechanism on the back side of the top plate so as to face the back surface of the top plate, and a plurality of surfaces of the main body opposite to the surface facing the top plate are provided. The stack table according to claim 1 or 2, wherein a recess or a protrusion is provided. It is a lever of a stack table that can be changed between the use state and the folded state,
The stack table is
The top board which becomes horizontal state in use condition, and stands up state in folded condition,
Legs provided on both sides of the back side of the top plate for supporting the top plate,
A lock that is fixed to the back side of the top plate and rotatably connected with the upper portion of the leg so that the top plate is in the horizontal state or the standing state, and maintains the top plate in the horizontal state or the standing state Mechanism,
A plate-like lever connected to the lock mechanism to change the stack table to the use state or the folded state;
A proximal end of the main body is rotatably connected to the lock mechanism, and the distal end of the main body has a flat portion with an indication indicating how to operate the lever. The stack table is bent in an L shape from the main body portion so that the tip of the flat portion points downward in use, and the stack table is in a folded state on the surface of the flat portion to which the display is attached. At the same time as it is horizontal and facing upward,
lever.

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