JP4690298B2 - Carry cart with shelves - Google Patents

Description

It relates to a carry cart with shelves.

In a 6-wheeled vehicle that has fixed wheels attached to the four corners of the bottom of the carriage frame at the center in the longitudinal direction of the free wheel, as a method of separating the fixed wheel from the ground so that the cart moves in all directions during nesting, There are a method of lowering the free wheels at the four corners (for example, Patent Document 1) and a method of lifting the free wheel (for example, Patent Document 2) in conjunction with the movement of raising the plate from the lying down state.
JP2003-341521 JP-A-10-109650

In order to nest a carry cart with shelves without removing each layer shelf and bottom plate, each layer shelf surface must be kept stationary in a horizontal plane and in a vertical plane, and in use, grounded It is necessary to move the fixed ring at the center of the bottom plate away from the ground so that it can move in all directions with only the free wheels at the four corners of the bottom plate.

When the rotation axis in the long side direction of each layer shelf and the bottom plate is near the side surface in the long side direction, the pillars on both sides that support each layer shelf on the bottom surface of the carriage frame are on both sides of the bottom surface of the carriage frame to which the four corner free wheels are attached. When the vertical axis of the long side direction is at the center of the shelf and the bottom surface, the support column stands upright at the center of the horizontal material. The rotating mechanism of the shelf plate and the bottom plate and the mechanism of the fixed wheel separating from the ground are slightly different between the case where the support column stands upright at the end of the horizontal member and the case where it stands upright at the center, and are handled separately.

In order to enable nesting when the shelf board and bottom board are horizontally lying down and supported by beams from below, each layer shelf board and bottom board stands at a height that does not hit the beam supported from below. Must. That is, the horizontal cantilever beam supporting the shelf board must pass through the gap between the standing shelf board and the shelf board. When it is not supported by the beam from below, it only has to stand up regardless of its height.

As shown in FIG. 1, FIG. 2 and FIG. 3, in the connecting axis between the side surface A on both sides of the shelf board or the bottom plate in the short side direction and the struts on both sides of each layer shelf plate or the bottom plate, “the rotation axis parallel to the long side direction” The cylindrical projection 1b or 4b "centering on XX moves while rotating in the elongated hole 1a or 4d so that the shelf board 4 or the bottom board 5 can rotate around the rotation axis XX. At the same time, the position of the rotation axis of the shelf plate or bottom plate moves, enabling standing or lying down,
It is characterized by being able to maintain a stationary state in a state where the surface of the shelf plate or the bottom plate is in a horizontal plane and in a state of being in a vertical plane by “hitting the rotation direction of rotation due to the weight of the shelf plate or the bottom plate”. Shelf or bottom plate

As shown in FIG. 4 and FIG. 10, as shown in FIG. 4D , it is “a part of a cylinder sandwiched between two planes Z and Z parallel to the central axis XX”, and “the short side is A rectangular parallelepiped rotating shaft 4e cut out from a cylinder having a circular arc s and a long side having a straight line t, and a side surface of which is a cylindrical surface. ,
Through the inside H of the cylinder of the “bearing 1c in which the cylinder H and the groove-shaped gap G are continuous” attached to the support columns 1 on both sides of the shelf plate 4 or the bottom plate 5,
After rotating the center axis X1 of the cylindrical shaft of the bearing and the center axis XX of the rotating shaft passing therethrough, and rotating from the state where the shelf or bottom plate surface is in the horizontal plane to the state in the vertical plane,
It fits into a groove-like gap G continuous with the bearing cylinder H, the rotary shaft XX moves up and down, and the shelf or bottom plate surface is stationary in a vertical state.

When the rotating shaft XX is in the cylinder H with the shelf plate 4 or the bottom plate 5 lying down, the horizontal and vertical movements of the rotating shaft are constrained, and the shelf plate 4 or the bottom plate 5 is standing upright. When the rotary shaft 4e is fitted into the groove G, the rotation of the rotary shaft is restrained, and the stationary state is maintained in a state where the shelf board 4 or the bottom plate 5 is in a horizontal plane and a vertical plane. Shelf board or bottom board characterized by being able to

A carry cart with a shelf having a shelf plate or a bottom plate is a six-wheeled vehicle that supports a carriage with a universal wheel at the four corners and two fixed wheels at the center, even when the universal wheel reaches the four corners. In some cases, nesting is possible.

5, 6, 7, and 12, as shown in FIG. 5, “the fixed ring having the long side direction as the traveling direction is in the case of FIG. In this case, the plates that are attached to both ends are located at the center of the bottom plate in the long side direction, “a rotatable connection shaft fixed to the carriage frame, connection shaft 5a in FIG. 5, long connection shaft 5c in FIG. Is connected to the connecting shaft 5d in FIG. 12 and the column connection 15 in FIG. 12 in the direction perpendicular to the long side direction of the bottom plate, and the “end on the opposite side connected to the rotatable connecting shaft” It fits into the dent attached to the bottom surface of the bottom plate that is fixed to It will be fixed, and the four free wheels and play on the above bogie frame A carry cart with two fixed wheels attached to both ends of the plate is configured, and the two fixed wheels on both ends of the plate are in a grounded state to support the carriage.

By rotating around the rotation axis in the long side direction and interlocking with the standing movement of the bottom plate, the fixed rings at both ends of the plate are lifted, and are separated from the ground slightly without being in contact with the ground and resting at a nestable height The cart frame is supported by the free wheels at the four corners, and the carry cart can move in all directions and can be nested.

As described in claim 5 and illustrated in FIG. 12 and FIG.
There is a rotating shaft 3 with a fixed ring 10 attached to one end and fixed to the bogie frame in the middle. The multi-end moves up and down by a load, and the end of the fixed ring moves circularly and the fixed ring is grounded. In the plate 9 which is stationary in a state where it is not in the state, as shown in FIGS. 12 (a) and 12 (b) or FIGS. 13 (a) and (b) Alternatively, as shown in FIG. 12 (c), (d) or FIG. 13 (c), (d), the other end is loaded with a spring that expands and contracts by a load, and the bottom plate is erected and separated from the plate. Plate that stops stationary wheel at a height that allows nesting when loaded

As stated in claim 6,
6. A six-wheeled vehicle having a fixed ring at the center of the bottom plate composed of the plates of claim 4 and claim 5, wherein the bottom plate is in close contact with the bottom plate when it is lying down, detached from the bottom plate when the bottom plate is erected, and stationary at a nestable height. Carry cart

When the bottom plate stands up without attaching the fixed ring attached to the bottom plate long side center to the bottom plate, it is separated from the bottom plate and the height of the fixed ring is set to the minimum height that does not touch the ground. By doing so, the stationary wheel is prevented from coming into contact with the standing shelf in the nesting state, which is hygienic. In addition, since each layer shelf that has been rotated upright is outside the area occupied by the level when it is level, there is a space for the cantilever beam that supports the shelf to pass through during nesting, and nesting can be performed without removing the shelf from the frame. It becomes possible.

In order to enable nesting, the beam material in the short side direction on both sides of the bottom surface to which the free wheel is attached is connected to the column base of the column and the column in the long side direction is the same as the beam material in the short side direction. There is a method to make the frame shape of the bogie to be Z-shaped at a height, or to make it higher than the beam material in the short side direction, but the column connecting material connecting the column and the column base of the column is the bottom plate The bottom plate can be set low by charging the bottom plate as a rotating shaft or by omitting it.

Usually, the fixed wheel is fixed to the carriage frame or the bottom plate. In the present invention, the plate for attaching the fixed wheel is connected to the bottom plate in FIGS. 5, 6, and 7 and the horizontal members on both sides in FIG. 12 and FIG. Connect to the bottom pillars. When the fixed ring is in contact with the ground, the bottom plate and the plate are in close contact with each other, and when the fixed ring is not in contact with the ground, the bottom plate is lifted up by standing and is kept at a height that does not interfere with the nesting operation. Yes. Therefore, the bottom plate usually rides on the bottom bogie frame, but in the present invention, the plate that adheres to or separates from the bottom plate is a structural material, and the bottom plate is also a structural material so that it is attached to or removed from the bogie frame. Become.

Fig.1 (a) is a figure of a carry cart with a shelf in which a support column 1 stands upright at one end of a horizontal member 2 to which a free wheel 11 is attached at both ends. The drawings from FIG. 1 to FIG. This is related to a “carry cart with shelves in which a post stands upright at the end of the”. The horizontal member 3 of the pipe material, which is also the rotation axis of each shelf 4, is rigidly connected to the support column, and the horizontal material 2 is connected to the horizontal surface of the carriage frame at the bottom of the carriage frame. And a U-shaped bottom frame. The horizontal member on the bottom is higher than the horizontal member 2 to which the free wheel is attached. During the nesting operation, the horizontal member 2 to which the free wheel is attached passes under the horizontal member on the bottom.

On the opposite side of the rotating shaft 3 of the bottom plate 5, a reinforcing material 6 is charged in the long side direction. The reinforcing material 6 serves to reinforce the bottom plate, and the reinforcing material 6 has a hook 7 attached to the end thereof. , The hooks 7 on both sides simultaneously fix both side surfaces of the bottom plate to the horizontal member 2. 7a is a handle for rotating the reinforcing member 6.

When the bottom plate is fixed to the horizontal members on both sides, the fixed height of the central fixed ring 10 is lower than the four corners of the free wheel 11, so the fixed ring is always in contact with the ground and supports the load of the cart. And the plate 9 to which fixed rings are attached at both ends are always in close contact. At the contact surface between the bottom plate 5 and the plate 9, it is necessary to stop the movement of the plate 9 in the horizontal plane, but it is not necessary to fix the vertical movement.

Either free wheel of the horizontal member 2 on both sides is not grounded. Since the bottom plate reinforcing material 6 presses the horizontal material 2 from the top to the bottom, the tensile force does not act on the hook that connects the horizontal material to which the grounding ring is attached and the bottom plate reinforcing material 6.

The force applied to the support column 1 is transmitted to the horizontal member 2 to which the free wheel that is not grounded is attached, and the horizontal member 2 pulls the end portion of the bottom plate reinforcing member 6 down from above. A tensile force acts on the hook that connects the horizontal member 2 and the bottom plate reinforcing member 6, but most of the force applied to the column 1 is transmitted to the rotating shaft side, so the tensile force applied to the hook is small. Therefore, the hook does not require a high tensile strength.

1A and 1B show a state in which the surface of each layer shelf board is horizontal, and one end of each layer shelf board rides on a cantilever rigidly joined to the rotating shaft 3 and the other end to the column 1. FIG.1 (c) shows the state in which each shelf board stood up. The shelf at the highest position is tilted inward so as not to deteriorate the nesting efficiency, so that the center of gravity of the shelf is set to the inside. Each layer shelf board can maintain two stationary states, standing up and lying down, with a rotating mechanism described later in FIG.

FIGS. 1B and 1C are cross-sectional views of the center portion of the bottom plate of the carry cart, and illustrate the plates 9 to which the fixed rings 10 are attached at both ends. As will be described later with reference to FIG. 6, FIG. 1 (b) shows a state in which the bottom plate 5 has fallen down and both ends are fixed to the horizontal member 2 and the fixed ring is grounded, and FIG. 1 (c) shows that the bottom plate is raised. Both ends are separated from the horizontal member 2 and the fixed ring is separated from the ground 12. In the state of FIG. 1 (c), the cart is supported by free wheels at four corners and can move in all directions, and the fixed ring and the plate at the center of the bottom plate are at a lower position than the standing bottom plate, and can be nested. . A cutout 4a is provided on the rotating shaft side of each layer shelf so that the cantilever 8 can easily pass through.

FIG. 2 is a series of operation diagrams in which the cylindrical protrusion 4b attached to the side surface of the shelf board 4 moves while rotating in the elongated hole 1a provided in the support column 1. FIG. An end in the long side direction is on the cantilever 8 and the shelf surface is horizontal. FIG. 2D is a side view of FIG.

In FIG. 2 (b), in order to leave the center of gravity of the shelf in the cart, the shelf notch 4c bites into the protrusion of the cantilevered sliding part 8 while being tilted slightly at an angle rather than standing upright. At rest. FIG. 2C shows a state in which the shelf board 4 is upright, and the shelf is self-supporting with the side face in the long side direction on the rotating shaft side of the shelf board 4 on the cantilever 8. Further, since the standing shelf is higher than the cantilever, the cantilever 8 can pass through a position lower than the shelf during the nesting operation.

When the projection of the cylinder moves in the slot, unlike the case of rotating in the circular hole, the rotation axis is inclined, but when the slot is short relative to the length of the shelf, the shelf is tilted. There is little tendency to rotate while squeaking.

FIG. 3 shows a joint portion in which a cylindrical projection 1b attached to a column 1 having an L-shaped cross-section is fitted into a slot 4 on both sides A in a direction perpendicular to the thickness direction of the shelf. In the explanation, when the surface of the shelf is horizontal, the shelf is not cantilevered as in the case of Fig. 2, but the shelf is itself cantilevered. A has a triangular cross section.

FIG. 3 (a) shows a state in which the shelf surface is horizontal as in the figure of FIG. 3 (d). In the state where the shelf surface is horizontal, the projection 1b of the column hits the outer surface of the long hole 4d of the shelf plate, and when the shelf surface is upright as shown in FIG. It hits. When the shelf surface transitions from the horizontal state to the upright state, the shelf plate 4 is rotated and then lowered in the vertical direction, but the shelf plate is lowered as the elongated hole 4d is lengthened. Since FIG. 3 is a cart in which the cantilever 8 is not attached to the column 1 as shown in FIG. 2, nesting is possible only by raising the shelf board 4.

Fig. 4 (d) is a figure of "Rotating shaft of a rectangular parallelepiped cut out from a cylinder whose side surface is a cylindrical surface" 4e. Fig. 4 (c) is a drawing showing the rotating shaft 4e of the rectangular parallelepiped attached to the side of the shelf and applied to the column FIG. 6 is an explanatory diagram of a state in which it is fitted into a “bearing in which a cylinder and a groove-like gap are continuous”.

4A shows a state in which the shelf surface is horizontal, and the rectangular parallelepiped rotation shaft 4e is in the cylinder of the bearing 1c, and the movement of the rotation shaft is restricted in the vertical and horizontal directions. FIG. The rectangular parallelepiped rotating shaft 4e is in the groove-shaped gap of the bearing 1c in the vertical plane, and the left and right shaking of the shelf board is stopped. When the shelf surface rises from a horizontal state, the rectangular parallelepiped rotary shaft 4e rotates in the cylinder of the bearing 1c and, after standing up, descends in the groove-shaped gap of the bearing 1c and stands upright so that the shelf plate does not fall down. To fix.

FIG. 5 is an explanatory view of a means for lifting the fixed ring 10b attached to one end of the plate 9 away from the ground in association with the up-and-down movement of the bottom plate 5 and retreating. Since the fixed ring 10a attached to the rotating shaft does not move to a higher position with the rotation of the bottom plate 5, an example in which it is directly attached to the bottom plate is shown in FIG.

FIG. 5 (a) shows a state in which the bottom plate has fallen and the fixed ring 10b is grounded, and FIGS. 5 (c) and 5 (d) are arrow views of the part A and the part B shown in FIG. 5 (a), respectively. As shown in FIG. 5C, the fixed ring 10b on the opposite side of the rotating shaft is fitted into a notch formed on the side of the bottom plate, so that the movement of the fixed ring 10b in the long side direction is stopped. Further, as shown in the figure of FIG. 5 (e), the movement of the fixed ring 10b in the short side direction is stopped by connecting the plate 9 to which the fixed ring is attached to the bottom plate and the rotatable connecting shaft 5a. The movement of the fixed ring 10b in the horizontal plane is stopped. Furthermore, since the bottom plate always presses the fixed wheel 10b from above, the fixed wheel 10b is the same as being fixed to the bottom plate 5.

As shown in FIG. 5B, when the bottom plate 5 is erected, the connecting shaft 5a moves circularly around the rotation shaft 3 of the bottom plate and moves to a higher position, thereby lifting the entire plate 9 up.
As shown in FIG. 5 (e), the plate 9 is provided with a gap 9a through which the fixed ring 10a on the rotating shaft passes, and as shown in FIG. 5 (b), contact portions provided on both sides of the gap 9a. When the bottom plate stands up, it comes into contact with the contact surface provided on the back surface of the bottom plate and rotates around the connection shaft 5a in the direction in which the fixed ring 10b attached to the end opposite to the end on which the connection shaft 5a of the plate 9 is provided falls. The stationary ring 10b attached to the end opposite to the end provided with the connecting shaft 5a is blocked and suspended in the air.

As shown in FIG. 5, when the fixed wheel is directly attached to the bottom plate, when the bottom plate is erected, the fixed wheel 10a on the rotating shaft side makes a circular motion around the rotating shaft 3 while being grounded, so the entire cart is in the short side direction. Will be moved to. In FIG. 6, without attaching the fixed ring directly to the bottom plate as shown in FIG. 5a, the fixed ring is attached to both ends of the plate 9, and when the bottom plate is erected, only the bottom plate rotates at the beginning of the erection and is in close contact with the plate of the bottom plate In order to allow the plate 9 to be lifted in a state where is removed, the rotating shaft 9b of the plate 9 is moved in an obliquely downward long hole 5c provided in the bottom plate.

In FIG. 6, the rotation axis 9b of the plate 9 is connected to the long hole 5c of the bottom plate so that the lateral movement of the cart is minimized when the bottom plate is raised. The rotary shaft 9b moves in the slot 5c of the bottom plate. 6 (a) shows the rotation shaft 9b of the plate 9 at the time of the bottom plate lodging is, in the upper end of the long hole 5 c of the bottom plate, the rotary shaft 9b during standing of the bottom plate shown in FIG. 6 (b) of the slot 5 c At the bottom.

FIGS. 6D, 6E and 6F illustrate the operation of the rotating shaft 9b around the elongated hole 5c. The elongated hole 5c on the bottom plate moves in a circular motion around the rotating shaft 3 of the bottom plate to increase the altitude. Then, as shown in FIG. 6 (f), the plate 9 that was initially in the position indicated by the dotted line is lifted to the height indicated by the solid line.

Figure 7 is similar to FIG. 6, when standing on the bottom plate, in which only the bottom plate initially upright is to rotate, the bottom plate 5 and the plate 9 is connected by a link 14. The connection shaft 5d between the link 14 and the bottom plate coincides with the rotation axis 3 of the bottom plate in FIGS. 7 (a) and 7 (b), and is displaced inward from the rotation axis in FIGS. 7 (c) to 7 (f). .

7A, 7C, and 7D show the bottom plate lying down, and the bottom plate 5 and the plate 9 are in close contact with each other. As shown in FIGS. 7B, 7E, and 7F, when the bottom plate 5 is rotated around the rotating shaft 3, the connecting shaft 5d also rotates around the rotating shaft 3 and moves to a higher position. Immediately before the bottom plate rises, a contact 14a provided on the side surface of the rising portion on the rotating shaft 3 side of the bottom plate pushes up the link 14, and abuts provided at the end opposite to the end of the fixed ring of the plate 9 attached. The part hits the contact surface provided on the side surface of the bottom plate, and the fixed ring floats in the air.

When the bottom plate 5 rotates around the rotation axis 3, as shown in FIG. 7 (e), there is a moment when the bottom plate 5 presses the plate 9 during the rotation of the bottom plate, and the cart may be moved sideways. The contact state between the bottom plate and the plate is released at the beginning of the rotation, and the lateral movement of the cart is small, and the plate 9 is lifted via the link 14 immediately before the end of the rotation. Since the plate 9 is at a lower position than the standing bottom plate and the fixed wheel is separated from the ground, the cart can travel in all directions and can be nested.

The drawings after FIG. 8 relate to a carry cart in which the support column 1 stands upright at the center of the horizontal members on both sides, and the rotation axis of each layer shelf board is the long side direction at the center of the shelf board width direction. Each shelf board and the bottom board are sandwiched between the pillars on both sides, and the pillars on both sides are connected to each other by the pillars 15 so that the distance between the pillars is not widened. The shelves of each layer placed between the columns on both sides do not fall out.

When the fixed ring is fixed to each bottom plate while keeping the position in the long side direction, and when the bottom plate 5 is folded in two at the center and stands upright, the fixed ring is not grounded. Each upright layered shelf board and the folded bottom board are in the same plane, and only the horizontal material 2 on both sides of the bottom surface protrudes perpendicularly from this plane. So that it can pass through. FIG. 8 (a) shows a state in which each layer shelf plate surface and bottom plate surface are horizontal and the fixed ring is grounded, and FIG. 8 (b) shows a state in which each layer shelf plate and bottom plate stand upright and the fixed ring does not come in contact with ground.

FIG. 9 is an explanatory view of the rotation operation of the shelf board at the junction between the shelf board 4 and the support column 1 shown in FIG. 8, and FIG. 9A is a state diagram when the shelf board surface is horizontal. There is a support portion 4g that goes straight to the plate surface 4f, and the rectangular rotary shaft 4e shown in FIG. 4 (d) is attached to the end of the 4g. When the shelf plate surface is horizontal, the groove of the bearing 1c applied to the support column It fits into the gap. Further, the upper end of the support portion 4g hits 1d attached to the support column 1, and the left and right shaking is stopped.

FIG. 9B shows a state where the shelf 4 is lifted upward, and the rectangular parallelepiped rotation shaft 4e at the end of the support is moved into the cylinder of the bearing 1c and rotated, and the support 4g is notched 4h. , 1d is attached to the support post. FIG. 9C shows a state in which the support plate 4g hits 1e and the shelf surface becomes vertical. FIG. 9D is a side view of FIG. The depth of the gap extending vertically from the cylindrical portion of the bearing 1c is set to a depth corresponding to the thickness of the rectangular rotating shaft 4e.

Fig. 3 `` Structure in which cylindrical projection 1b attached to column 1 with a slot on the side of the shelf is fitted '' is shown in Fig. 2 `` Elongation hole in which column projection 1b on the side of the shelf is attached to column 1 In FIG. 9, “the rectangular parallelepiped rotary shaft 4 e at the end of the support portion of the shelf plate 4” is attached to the side surface of the support so that it operates in the same manner as the “structure that fits in”, and “the cylindrical portion and the longitudinally extending gap are continuous. When “1c” is provided on the side surface of the shelf plate, “the rectangular parallelepiped rotating shaft 4e at the end of the support portion of the shelf plate 4 fits into the bearing 1c in which the gap extending vertically with the cylindrical portion provided on the side surface of the column is continuous. Works the same as "Structure".

FIG. 10 is an exploded view of components around the joint between the shelf board and the support column shown in FIG.

FIG. 11 is an explanatory view of the rotation operation of the bottom plate at the joint between the bottom plate 5 and the support column 1 shown in FIG. 8. The bottom plate is divided into two pieces, and each bottom plate is fixed to the side of the long side in different positions. The opposite side surface to which the wheel is attached and the fixed wheel is attached is joined by the rotating shaft 5e in the long side direction. As shown in FIG. 11 (b), the protrusion 5f attached to the bottom plate moves in the long hole 2a connected to the support column 1 from the horizontal member 2, causing the handle 5g attached to one side of the bottom plate to attach to the support column. The bottom plate is suspended in the air by fitting the tip of the handle into the notch 1f.

11 (c) and 11 (d) are cross-sectional views of the central portion of the bottom plate to which the fixed ring is attached, and show the state when the bottom plate is expanded horizontally and when it is folded vertically. The pulling spring 5h connecting the bottom plates is charged so as to be stationary in the respective states of FIGS. 11 (c) and 11 (d).

In FIG. 12, the bottom plate is not divided into two pieces as shown in FIG. 11, but a single bottom plate rotates around a rotation axis in the long side direction at the center of the bottom plate and rises and falls. A cylindrical projection 5f attached to the center in the short side direction with the rotary shaft 3 as the center axis moves up and down in a vertical hole 1a provided on a column upright on the center of both side surfaces. The bottom plate rotates. The bottom plate rests in a horizontal state as shown in FIGS. 12 (a) and 12 (c) and in a vertical state as shown in FIGS. 12 (b) and 12 (d).

The left and right fixed rings 10 are fixed to the ends of separate plates 9, respectively, and the other end opposite to the end where the fixed rings are fixed is connected to the column connection 3 that connects the two columns. The tether 3 rotates around the axis of rotation, and the fixed ring at the end moves up and down in a circular motion. When the bottom plate rises on the extension of each plate 9 on the opposite side of the end where the fixed ring attaches to the center of the rotating shaft 3 when the bottom plate stands, the extension of the plate 9 sinks and the rotating shaft 3 is centered. Then lift the end where the opposite fixed ring is attached and move the fixed ring on both sides away from the ground.

12 (a) and 12 (b) show a case where the two plates have a common rotating shaft 3, and FIGS. 12 (c) and 12 (d) show a case where the two plates have a rotating shaft 3 separated from each other. 12 (a) and 12 (c) show a state in which the bottom plate has fallen, and the bottom plate does not ride on the portion of the rotating shaft 3 where the two plates are joined. The bottom surface of the rising portion in the long side direction on both sides of the bottom plate rides on the fixed ring mounting portion of the plate 9, and the bottom plate 5 and the plate 9 are in close contact with each other. As shown in FIG. 5C, if a notch into which the plate 9 is fitted is provided at the rising portion of the bottom plate, the mounting portion of the fixed ring of the plate does not move back and forth.

12 (b) and 12 (d) show that the bottom plate is separated from the part where the fixed ring on both sides of each plate is attached, and is on the opposite plate extension where the fixed ring is attached, and the fixed ring is attached to each plate from the ground. Gives the rotation to pull apart. When the bottom plate side surface gets on the rotary shaft 3, in FIG. 12B, the respective plate extensions rotate in directions away from each other, and 1g hits the bottom plate side surface and stops rotating. FIG. 12D rotates in a direction approaching each other, and 1 g of the bottom plate side surface is sandwiched and the rotation stops. The fixed ring that has been lifted and the end of the plate to which the fixed ring is attached are positioned lower than the rotary shaft 3 that is also a pillar connection, and can be nested.

In FIG. 13, as in FIG. 12, the fixed ring 10 is attached to one end of each plate 9, and the other end is attached to the rotating shaft 3. At the end of each plate on the rotating shaft side, the upper half in the plate thickness direction with the rotating shaft 3 as the center is 16a per contact when the bottom plate collapses as shown in FIGS. A push spring 16 is charged in the lower half.

13 (b) and 13 (d), when the bottom plate is separated from the plate, there is no load on the push spring, and the direction in which the lower halves are separated from each other about the rotary shaft 3 by the force by which the push spring 16 extends. The left and right plates 9 rotate in the direction in which the fixed ring 10 is lifted. 13 (a) and 13 (c), when the bottom plate falls, the bottom surfaces of the rising portions on both side surfaces of the bottom plate suppress the plate end immediately above the fixed ring, so that the left and right plates 9 rotate around the rotation axis 3, The pressing spring 16 is contracted. The push spring 16 need only have a force that gives the rotation to float the fixed ring while the plate 9 is unloaded. The weight of the bottom plate is loaded on the plate 9, and the bottom plate is pushed by the work of fixing the bottom plate to the horizontal member 2 attached to the free wheel. The spring 16 is contracted.

The bottom plate shown in Fig. 13 has the long side column connecting material 3 as the rotation axis, and the short side direction of the bottom plate rotates and stands upside down, but the short side direction rotation axis is attached to the horizontal material 2 with the free wheel attached. Even if the long side direction of the bottom plate rotates and rises and falls, the “mechanism in which the push spring is loaded” shown in FIG. 13 functions.

In the structure of Fig. 12, the "plate that rotates around the rotation axis" is rotated by the force of the spring instead of the action of the bottom plate, so that the fixed ring floats in the air when there is no load as in the structure of Fig. 13. If the modification is made, the bottom plate will not be "rotated around the rotation axis in the long side direction of the bottom plate" but "rotate around the rotation axis in the short side direction of the bottom plate", and external force will act on the plate It works even if it stops. This also applies to the structure shown in FIG. 5, FIG. 6, and FIG. 7. In the structure shown in FIG. 5, FIG. 6, and FIG. 7, the bottom plate is shortened by charging a spring, for example, a torsion spring, to the rotating shaft. Even when rotating around the rotation axis in the side direction, the fixed ring floats in the air when the bottom plate stands up.

A figure of a carry cart with shelves with uprights upright at the ends of the horizontal members on both sides of the bottom A series of operation diagrams in which the cylindrical protrusion on the side of the shelf moves while rotating in the column hole A series of operation diagrams in which the columnar protrusion of the column moves while rotating in the slot on the side of the shelf Operational diagram in which the cuboid rotating shaft moves in a bearing in which the cylinder of the column and the groove-like gap are continuous Example of the rotating shaft side fixed ring attached to the bottom plate in the operation diagram of the plate linked to the bottom plate Example of movement of the plate's rotation axis in the slot in the bottom plate in the operation diagram of the plate linked to the bottom plate Example of connecting the bottom plate and the plate with a link in the operation diagram of the plate interlocking with the bottom plate Figure of a carry cart with shelves with uprights upright in the center of the horizontal material on both sides of the bottom Explanatory drawing of rotation operation of shelf board at junction of shelf board and support column Parts exploded view on both sides of the shelf Operation explanatory diagram of the bottom plate which is divided into two and joined by the central rotating shaft Operational explanation of riding on the rotating shaft that connects the two plates when the bottom plate stands up Illustration of the operation of the two plates with springs in the connection

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Horizontal material of both sides of bottom face 3 Rotating shaft of bottom plate 4 Shelf plate 5 Bottom plate 6 Reinforcement material 7 Hook 8 Cantilever
9 Plate to which fixed ring is attached 10 Fixed ring 11 Universal ring 12 Ground 13 Bolt 14 Link 15 Column connecting 16 Push spring

Claims (3)

A bottom plate (5) that is pivotally supported around a horizontal rotation shaft (3) and rotates between a lying position and a standing position, and a plate that moves up and down in conjunction with the bottom plate (5) (9) a rotation mechanism of a link device comprising:
Link the connecting shaft (5a) provided in the vicinity of the rotating shaft (3) of the bottom plate (5) and the connecting shaft (9b) provided at the end of the plate (9) or an intermediate portion close to the end ( 14) is connected via or not, and when the bottom plate (5) is rotated from the lying position to the standing position, the connecting shaft (5a) is moved circularly around the rotating shaft (3). Move to a higher position and lift the connecting shaft (9b)
Alternatively, the connecting shaft (9b) provided at the end of the plate (9) or an intermediate portion close to the end passes through the slot (5c) provided near the rotating shaft (3) of the bottom plate (5). When the bottom plate (5) is movably mounted and pivots from a prone position to a standing position, the connecting shaft (9b) moves from the upper end of the elongated hole (5c) and contacts the lower end. Thus, the elongated hole (5c) moves circularly about the rotating shaft (3) and moves to a higher position so that the connecting shaft (9b) is lifted,
The contact surface provided in the vicinity of the rotating shaft (3) of the bottom plate (5) and the contact portion provided in the vicinity of the connecting shaft (9b) of the plate (9) are the bottom plate (5). Is in the state where it is lying down and when the bottom plate (5) starts to stand up, it is in a detached state, and only the bottom plate (5) rotates and engages on the way to the position where the bottom plate (5) stands up. The plate (9) is prevented from rotating around the connection shaft (5a), and the end of the plate (9) opposite to the end where the connection shaft (9b) is provided is lifted. ,
A rotating mechanism of a link device, wherein the plate (9) is kept stationary in a substantially horizontal state when the bottom plate (5) is in an upright position . The link (14) connects the horizontal rotating shaft (3) and the connecting shaft (9b), and the bottom plate (5) contacts and separates from the link (14) in the vicinity of the rotating shaft (3). A contact (14a) is provided, and the contact (14a) engages with the link (14) when the bottom plate (5) rotates from a position where it lies around the horizontal rotation shaft (3) to a standing position. Then, the bottom plate (5) is relatively integrated with the link (14) so that the connecting shaft (9b) moves circularly about the rotating shaft (3) and moves to a higher position to be lifted. The rotating mechanism of the link device according to claim 1. It is a carry cart for a six-wheeled vehicle that supports the bottom plate (5) with a cart having a free wheel at four corners and two fixed wheels at the center,
The horizontal rotation shaft (3) is parallel to the long side direction of the bottom plate (5), the two fixed rings are attached to both ends of the plate, and the bottom plate (5) stands on the two fixed wheels. The carry cart provided with the rotation mechanism of the link device according to claim 1 or 2, wherein the cart is stationary at a height that can be nested without being grounded.

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