Cart device and cart system

Abstract

To provide a cart device and a cart system excellent in usability while improving the degree of freedom in design.SOLUTION: A cart device according to an aspect of the present invention includes: a cart main body having a top plate and a support structure supporting the top plate from below; a caster supporting the cart main body and capable of traveling on a floor surface; and a grip portion provided in a portion of the cart main body, the portion being located on a first side in a first direction intersecting a vertical direction. The cart main body is provided with a chair support member that detachably supports a folding chair, on a first side in a second direction intersecting the first direction as viewed from the vertical direction, with respect to the top plate.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cart device and a cart system.

Background Art

[0002] A cart device including a cart body having a top plate and casters supporting the cart body is known. The cart device can move forward, backward, or turn by being pushed or pulled through a gripping portion provided at the rear of the cart body. Thereby, the cart device can move in a work space (such as an office, a hospital, a public facility, etc.) with necessary articles placed on the top plate, and can move to a required place and perform work using the top plate.

[0003] By the way, for example, Patent Documents 1 and 2 below disclose a configuration in which a chair is mounted on a cart body. According to this configuration, by pulling out the chair from the cart body at the moving place, an operator can perform work while sitting on the chair.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the above-described prior art, since the chair is provided at the rear portion (grip portion side) of the cart body, for example, when an operator operates the cart device via the grip portion, there is a possibility that the feet of the operator and the chair may interfere with each other. Further, as in the prior art, when the chair is not in use (in a state mounted on the cart body), in order to design the chair to fit below the top plate, there are limitations on the height of the top plate and the chair, which may lead to a decrease in the degree of freedom in design.

[0006] The present invention provides a cart device and a cart system that are excellent in usability while improving the degree of freedom in design.

Means for Solving the Problems

[0007] In order to solve the above problems, the present invention adopts the following aspects. (1) A cart device according to an aspect of the present invention includes a cart body having a top plate and a support structure that supports the top plate from below, casters that support the cart body and are capable of traveling on a floor surface, and a grip portion provided at a portion of the cart body located on a first side in a first direction that intersects in the vertical direction. The cart body is provided with a chair support member that removably supports a folding chair on a first side in a second direction that intersects the first direction when viewed from above and below with respect to the top plate.

[0008] According to this aspect, since the chair is supported on the first side in the first direction of the second direction with respect to the cart body, it is possible to suppress interference between the feet of the operator and the chair when the operator holds the grip portion and moves the cart device. Moreover, since the chair is removably supported on the cart body, the relative position between the cart device and the chair can be freely set when the chair is in use. Thereby, usability can be improved. Further, since the chair is disposed on the first side in the second direction with respect to the top plate, compared with a configuration in which the chair is disposed at a position overlapping the top plate in plan view, the height limitations in the design of the top plate and the chair are reduced, and the degree of freedom in design of the cart device can be improved.

[0009] (2) In the cart device according to any one of the above (1) aspects, it is preferable that the chair support member includes an attachment portion detachably attached to the cart body, and a support portion extending from the attachment portion to the first side in the second direction and supporting the folding chair. According to this aspect, since the chair support member is detachably attached to the cart body via the attachment portion, it is possible to provide a cart device with excellent versatility, such as providing a chair support member for an existing cart body or selecting the presence or absence of a chair support member depending on the cart device.

[0010] (3) In the cart device according to the aspect of the above (2), it is preferable that the support portion is formed of a wire material. According to this aspect, by forming the support portion of a wire material, the support portion can be provided at low cost, for example, by bending the wire material. In addition, it is possible to suppress the accumulation of dust or the like on the support portion compared to the case where the support portion is formed of, for example, a plate material. Thereby, the maintainability can be improved.

[0011] (4) In the cart device according to any one of the above (1) to (3) aspects, it is preferable that the support structure supports the top plate so as to be movable up and down, and an elevating operation portion for operating the elevation of the top plate is provided at a portion of the cart body located on the second side in the second direction. According to this aspect, since the elevating operation portion is provided on the side opposite to the mounted chair, it is possible to prevent accidentally operating the elevating operation portion during the mounting or removal operation of the chair. As a result, it is possible to suppress the unexpected elevation of the top plate and improve the reliability.

[0012] (5) In the cart device according to any one of the above (1) to (4) aspects, it is preferable that the chair support member supports the folding chair on the first side in the first direction with respect to the center of the top plate in the first direction. According to this aspect, for example, when approaching the cart device to another piece of furniture from the second side in the first direction, interference between the chair and the other piece of furniture can be suppressed. Further, since the folding chair is mounted on the gripping portion side with respect to the center of the top plate, the movement of the operator between the position facing the chair support member (the loading and unloading position of the folding chair) and the position facing the gripping portion (the operation position when moving the cart device) becomes easy. Thereby, usability can be further improved.

[0013] (6) In the cart device according to any one of the above aspects (1) to (5), the support structure includes a leg portion to which the caster is attached, and a support column that extends upward from the leg portion and supports the top plate, and it is preferable that the chair support member is attached to the support column so that the height position in the vertical direction can be changed. According to this aspect, by changing the height position of the chair support member, the support position of the chair can be adjusted in the vertical direction.

[0014] (7) In the cart device according to any one of the above aspects (1) to (6), it is preferable that the chair support member includes an upper member that supports the upper part of the folding chair and a lower member that supports the lower part of the folding chair. According to this aspect, by supporting the chair on both the upper and lower sides, the chair can be stably supported in the mounted state.

[0015] (8) In the cart device according to the aspect of the above (7), it is preferable that the length of the lower member in the first direction is longer than the length of the upper member in the first direction. According to this aspect, by supporting the lower part of the chair with the lower member, the chair can be stably supported in the mounted state. On the other hand, by shortening the length of the upper member, interference between the upper member and the chair can be avoided when mounting or removing the chair.

[0016] (9) In the cart device according to any one of the aspects (1) to (8) above, it is preferable that the chair support member is provided with a stabilizing leg that extends downward from the chair support member and can contact the floor surface in a region outside the support structure in a plan view. According to this aspect, when the cart device tilts to the first side in the second direction due to the load of the chair with the chair mounted on the chair support member, the stabilizing leg contacts the floor surface. Thereby, the tipping of the cart device can be suppressed.

[0017] (10) In the cart device according to the aspect (9) above, it is preferable that the stabilizing leg includes a leg body that extends downward from the chair support member and a sub-caster provided at a lower end portion of the leg body. According to this aspect, even when the stabilizing leg is in contact with the floor surface during the running of the cart device, the running of the cart device can be prevented from being hindered by the rolling of the sub-caster as the cart device runs. Therefore, the stabilizing leg can be extended downward, and it is easy to suppress the tipping of the cart device.

[0018] (11) In the cart device according to any one of the aspects (1) to (10) above, it is preferable that a weight portion is provided in a portion of the cart body that is located on the second side in the second direction. According to this aspect, by providing the weight portion on the side of the cart body opposite to the chair support member, it is easy to balance with the weight of the chair by the weight portion. Thereby, it is easy to suppress the tipping of the cart device.

[0019] (12) A cart system according to one aspect of the present invention includes a cart device according to any one of the aspects (1) to (8) above, and a folding chair removably supported on the chair support member of the cart device. The folding chair includes a first leg rod and a second leg rod rotatably connected so as to overlap each other in a folded state and extend in directions intersecting each other in an unfolded state, and a seating surface having a seating surface facing upward in the unfolded state and disposed along the first leg rod and the second leg rod in the folded state and rotatably connected to each of the first leg rod and the second leg rod. The chair support member supports both the first leg rod and the second leg rod of the folding chair in the folded state. According to this aspect, in the lower member, by supporting both the first leg rod and the second leg rod, in the mounted state, it is possible to suppress the first leg rod and the second leg rod from separating and the chair from being deployed to the use state. Thereby, a cart system with excellent reliability can be provided.

[0020] (13) In the cart system according to the aspect (12) above, the first leg rod includes a pair of first vertical rods extending in the vertical direction with a space therebetween in the left-right direction of the chair, and a first horizontal rod connecting the pair of first vertical rods. The second leg rod includes a pair of second vertical rods extending in the vertical direction with a space therebetween in the left-right direction of the chair, and a second horizontal rod connecting the pair of second vertical rods. The first horizontal rod and the second horizontal rod are disposed at the same height in the vertical direction in the folded state, and it is preferable to support the first horizontal rod and the second horizontal rod for the folding chair in the folded state. According to this aspect, in the mounted state of the chair, by the chair support member supporting both the first horizontal rod and the second horizontal rod, for example, compared to the case where the chair support member contacts only one of the first horizontal rod and the second horizontal rod, the chair can be stably supported by the chair support member. Also, when mounting or removing the chair with respect to the chair support member, it is easy to grip the first horizontal rod and the second horizontal rod together, so it is possible to suppress the first leg rod and the second leg rod from unexpectedly deploying.

Effects of the Invention

[0021] According to each of the above aspects, it is possible to provide a cart device and a cart system that are excellent in usability while improving the degree of design freedom.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

[0023] Next, embodiments of the present invention will be described with reference to the drawings. In the embodiments and modifications described below, corresponding components may be denoted by the same reference numerals and description thereof may be omitted. In the following description, expressions indicating relative or absolute arrangements such as "parallel", "orthogonal", "center", "coaxial", etc. not only strictly represent such arrangements, but also represent states in which they are relatively displaced with tolerances and angles or distances that provide the same function. Further, in the present embodiment, the term "opposite" includes not only the case where the orthogonal directions (normal directions) of two surfaces coincide with each other, but also the case where the orthogonal directions intersect each other.

[0024] (First Embodiment) [Cart System 1] FIG. 1 is a perspective view of a cart system 1 showing the state in which the chair 3 is in the use state P2. FIG. 2 is a side view of the cart system 1 showing the state in which the chair 3 is in the mounted state P1. FIG. 3 is a rear view of the cart system 1 showing the state in which the chair 3 is in the mounted state P1. FIG. 4 is a bottom view of the cart system 1 showing the state in which the chair 3 is in the mounted state P1. The cart system 1 shown in FIGS. 1 to 4 includes a cart device 2 and a chair 3 that is removably supported by the cart device 2. In a state where the chair 3 is mounted on the cart device 2 (mounted state P1 in FIG. 2), the cart system 1 can travel on the floor surface F with the cart device 2 and the chair 3 integrated. On the other hand, in a state where the user is seated on the chair 3 removed from the cart device 2 (use state (deployed state) P2 shown in FIG. 1), work can be performed using the cart device 2.

[0025] In the following description, the configuration of the cart system 1 will be described based on the case where the chair 3 is in the use state P2. Also, in each figure, the orientation (front-back, up-down, left-right directions) of the entire cart system 1 is represented using coordinates. In this case, the direction perpendicular to the floor surface F is the up-down direction (arrow UP is upward), and the directions perpendicular to each other when viewed from the up-down direction are the front-back direction (arrow FR is forward) and the left-right direction (arrow LH is leftward), respectively. Furthermore, when the orientation of the cart device 2 and the orientation of the chair 3 are the same, it will be simply described as the front-back direction, up-down direction, or left-right direction. On the other hand, when the orientation of the cart device 2 and the orientation of the chair 3 are different, the orientation of the cart device 2 will be described after setting it as the cart front-back direction or cart left-right direction, and the orientation of the chair 3 may be described after setting it as the chair front-back direction or chair left-right direction. Note that the orientation of the cart device 2 is the orientation as seen from the operator when the operator stands on the side of the cart device 2 where the gripping portion 12 is provided. The orientation of the chair 3 is the orientation as seen from the operator when the operator is seated on the chair 3.

[0026] <Cart device 2> The cart device 2 is used for transporting articles in the work space. The cart device 2 includes a cart body 10, a gripping portion 12, a lifting operation portion 13, a tray 14, and a chair support member 15. The cart body 10 constitutes the appearance of the cart device 2. The cart body 10 includes a support structure 20 and a top plate 23 supported by the support structure 20 from below.

[0027] The support structure 20 includes a leg portion 21 and a support column 22. As shown in FIG. 4, the leg portion 21 functions as a strength member that supports the support column 22 and the top plate 23 in the cart device 2. The leg portion 21 is formed in an H shape in plan view. The leg portion 21 is disposed facing the floor surface F. The leg portion 21 includes a base portion 31, a pair of cart front legs 32, and a pair of cart rear legs 33. In the illustrated example, the base portion 31, the cart front legs 32, and the cart rear legs 33 are integrally formed.

[0028] The base portion 31 extends in the left - right direction. The cart front legs 32 extend forward from both ends in the left - right direction of the base portion 31. The cart front legs 32 extend in a direction away from each other (outward in the left - right direction) as they go forward. The cart rear legs 33 extend rearward from both ends in the left - right direction of the base portion 31. The cart rear legs 33 extend in a direction away from each other (outward in the left - right direction) as they go rearward. The length of the cart front legs 32 in the front - rear direction is longer than the length of the cart rear legs 33 in the front - rear direction. Casters 17 are attached to the tip ends of the cart front legs 32 and the cart rear legs 33, respectively. By the rolling of the casters 17, the cart device 2 can travel on the floor surface F. Note that the shape of the leg portion 21 in plan view is not limited to an H shape, and can be appropriately changed to a ring shape, a rectangular shape, a radial shape (multi - branched legs), etc.

[0029] As shown in FIGS. 1 and 3, the support column 22 is configured to be telescopically extendable in the vertical direction. Specifically, the support column 22 includes an outer cylinder 35 and an inner cylinder 36. The outer cylinder 35 is formed in an oval shape with the left - right direction as the major axis in plan view. The outer cylinder 35 extends upward from the base portion 31. An elevating mechanism such as a gas spring is provided inside the outer cylinder 35.

[0030] As shown in FIGS. 2 and 3, front side groove portions 35a and rear side groove portions 35b are formed in the outer cylinder 35. The front side groove portions 35a extend in the vertical direction in a state of being open forward at both left and right ends of the outer cylinder 35. The rear side groove portions 35b extend in the vertical direction in a state of being open rearward at both left and right ends of the outer cylinder 35. Mounting rails (not shown) are respectively fitted into the groove portions 35a and 35b. The mounting rails are formed with a plurality of locking holes (not shown) spaced apart in the vertical direction. The locking holes are exposed to the outside of the groove portions 35a and 35b through the corresponding groove portions 35a and 35b.

[0031] The inner cylinder 36 is inserted into the outer cylinder 35 in a state where the upper part protrudes with respect to the outer cylinder 35. The inner cylinder 36 is linked to the elevating mechanism within the outer cylinder 35. Thereby, the inner cylinder 36 is configured to be movable in the vertical direction with respect to the outer cylinder 35. Note that the support column 22 may be configured not to expand and contract in the vertical direction. Also, a plurality of support columns 22 may be provided on the leg portion 21.

[0032] The top plate 23 is formed in a rectangular shape in plan view with the longitudinal direction being the front-rear direction and the short side direction being the left-right direction. The upper surface of the top plate 23 functions as a load support surface when an operator performs work or when an article is placed thereon. The lower surface of the top plate 23 is fixed to the upper end portion of the inner cylinder 36. Therefore, the height of the top plate 23 from the floor surface F can be adjusted in accordance with the expansion and contraction of the support column 22. Note that the shape of the top plate 23 in plan view is not limited to a rectangular shape, and may be other polygonal shapes such as a square shape, or a circular shape or the like.

[0033] The gripping portion 12 is a portion that serves as a handle for the operator. The gripping portion 12 is formed in a U shape that opens forward in plan view. The gripping portion 12 is fixed to the lower surface of the top plate 23 in a state of protruding rearward from the top plate 23. In the illustrated example, the gripping portion 12 extends along the rear edge of the top plate 23 so as to straddle the central portion of the top plate 23 in the left-right direction. However, the gripping portion 12 can be appropriately changed as long as it is used for the movement of the cart device 2.

[0034] As shown in FIGS. 1 and 3, the lifting operation unit 13 controls the telescopic operation of the lifting mechanism. The lifting operation unit 13 is provided at a portion located on one side (second side) with respect to the center in the left - right direction on the lower surface of the top plate 23. The lifting operation unit 13 is disposed below the gripping unit 12. The lifting operation unit 13 is, for example, in the form of a lever that can rotate in the vertical direction. The lifting operation unit 13 can be operated while gripping the top plate 23 or the gripping unit 12. The locking of the lifting mechanism is released by operating the lifting operation unit 13. That is, by operating the lifting operation unit 13, the top plate 23 can be adjusted to an arbitrary height.

[0035] As shown in FIGS. 1 and 2, the tray 14 is attached forward with respect to the support column 22. In the illustrated example, two trays 14 are provided at intervals in the vertical direction. The tray 14 includes a tray body 41 and a tray bracket 42. The tray body 41 is formed in a box shape that opens upward. An article can be stored in the tray body 41 through the upper - end opening. Note that the shape and the like of the tray body 41 can be changed as appropriate.

[0036] The tray bracket 42 is a member for attaching the tray body 41 to the support column 22. The tray bracket 42 is fixed to the bottom wall of the tray body 41. The tray bracket 42 is provided with a locking claw (not shown) that protrudes rearward. The tray bracket 42 is attached to the outer cylinder 35 so that the height can be changed by selectively hooking the locking claw on any one of a plurality of locking holes provided in each front - side groove portion 35a. Note that the number of trays 14 can be changed as appropriate. Also, the tray 14 may be attached rearward with respect to the support column 22. When the tray 14 is attached rearward with respect to the support column 22, the dimension in the front - rear direction may be made smaller than that of the tray 14 attached forward. Thereby, interference between the feet of the operator and the tray 14 can be avoided during the movement operation of the cart device 2.

[0037] <Chair 3> As shown in FIG. 1, the chair 3 is provided facing the cart device 2, for example, behind the cart with respect to the cart device 2. The chair 3 is a so-called folding chair. The chair 3 includes support legs 100, a seat 101, and a backrest 102. The support legs 100 include front chair legs 110 and rear chair legs 111.

[0038] The front chair legs 110 are formed in an H shape when viewed from the front-rear direction of the chair by joining a plurality of rod members. The front chair legs 110 include a pair of front vertical rods 112 and a front cross rod 113. The front vertical rods 112 are arranged at intervals in the left-right direction of the chair. Each front vertical rod 112 extends obliquely backward toward the rear of the chair as it goes upward. The front cross rod 113 connects the lower ends of the front vertical rods 112. The front cross rod 113 also functions as a footrest when an operator is seated on the chair 3.

[0039] The rear chair legs 111 are formed in an H shape when viewed from the front-rear direction of the chair by joining a plurality of rod members. The rear chair legs 111 include a pair of rear vertical rods 115 and a rear cross rod 116. The rear vertical rods 115 are arranged at intervals in the left-right direction of the chair. Each rear vertical rod 115 extends obliquely forward toward the front of the chair as it goes upward. As shown in FIGS. 1 and 3, each rear vertical rod 115 is formed in a double cylindrical shape including an outer rod 115a and an inner rod 115b. Each rear vertical rod 115 is configured to be telescopic by inserting the inner rod 115b inside the outer rod 115a. As shown in FIG. 1, the upper end of the inner rod 115b is rotatably connected to an intermediate portion in the up-down direction of the chair of the corresponding front vertical rod 112. The support legs 100 are grounded on the floor surface F in a state where the front chair legs 110 and the rear chair legs 111 form a predetermined angle in the use state of the chair 3. The rear cross rod 116 connects the lower ends of the rear vertical rods 115 (outer rods 115a).

[0040] The seat 101 is disposed between a pair of front vertical rods 112 and between a pair of rear vertical rods 115, and is rotatably supported by each of the front chair legs 110 and the rear chair legs 111. Specifically, the seat 101 is rotatably connected to the front vertical rod 112 at a portion located below the chair with respect to the connection portion between the front vertical rod 112 and the inner rod 115b. The seat 101 is rotatably connected to the upper end portion of the rear chair leg 111 (outer rod 115a). The seat 101 is supported by the support legs 100 in a state where the seating surface 101a faces upward of the chair in the use state P2 of the chair 3.

[0041] The backrest 102 bridges the upper end portions of the front vertical rods 112. The backrest 102 is disposed at a position overlapping with the rear end portion of the seating surface 101a when viewed from the up-down direction of the chair in the use state P2 of the chair 3.

[0042] The chair 3 can be switched between the use state P2 and the folded state (see FIG. 3) by rotating the front vertical rod 112 and the rear vertical rod 115 facing each other in the front-rear direction of the chair so as to approach or separate from each other. Specifically, the chair 3 rotates to a position where the seating surface 101a faces the rear of the chair by approaching the front vertical rod 112 and the rear vertical rod 115 facing each other in the front-rear direction of the chair until they overlap each other. That is, in the folded state, the seating surface 101a is disposed along the front vertical rod 112 and the rear vertical rod 115. Note that the chair 3 can be appropriately changed as long as it has a foldable configuration.

[0043] <Chair support member 15> As shown in FIG. 1, the chair support member 15 is a member for mounting the folded chair 3 on the cart device 2. The chair support member 15 includes a lower member 50 and an upper member 51.

[0044] FIG. 5 is a perspective view of the lower member 50. As shown in FIG. 5, the lower member 50 is detachably attached to the leg portion 21 and supports the lower portion of the chair 3. The lower member 50 includes a lower attachment portion 55, a front pressing piece 56, a rear pressing piece 57, a standing piece 58, and a lower support portion 59. The lower attachment portion 55 is formed by bending a plate material. The lower attachment portion 55 is formed in a C shape that opens toward one side in the left-right direction in a plan view. Specifically, the lower attachment portion 55 includes a front holding piece 61, a rear holding piece 62, and a connecting piece 63.

[0045] The front holding piece 61 is formed in a U shape that opens downward. The front holding piece 61 is mounted so as to cover the cart front leg 32a located on the other side (the first side) in the left-right direction among the pair of cart front legs 32 from above. A slit 61a is formed in a wall portion located on one side in the left-right direction of the front holding piece 61 and protruding downward from the cart front leg 32a.

[0046] The rear holding piece 62 is formed in a U shape that opens downward. The rear holding piece 62 is mounted so as to cover the cart rear leg 33a located on the other side in the left-right direction among the pair of cart rear legs 33 from above. A slit 62a is formed in a wall portion located on one side in the left-right direction of the rear holding piece 62 and protruding downward from the cart rear leg 33a.

[0047] The connecting piece 63 connects the wall portions located on the other side in the left-right direction among the front holding piece 61 and the rear holding piece 62. The connecting piece 63 overlaps at least a part of the top plate 23 in a plan view.

[0048] The front pressing piece 56 sandwiches the cart front leg 32a between it and the front holding piece 61. The front pressing piece 56 includes a front plate-like portion 56a and a front locking piece 56b. The front plate-like portion 56a extends overlapping the lower attachment portion 55 in a plan view. The base end portion of the front plate-like portion 56a is fixed to the connecting piece 63 by screws. The tip end portion of the front plate-like portion 56a is arranged to cross the lower end opening of the front holding piece 61 in the left-right direction. That is, the cart front leg 32a is sandwiched between the front plate-like portion 56a and the front holding piece 61. The front locking piece 56b protrudes from the tip of the front plate-shaped portion 56a and is bent downward. The front locking piece 56b is hooked from one side in the left-right direction by the front holding piece 61 while being inserted into the slit 61a.

[0049] As shown in FIGS. 4 and 5, the rear pressing piece 57 sandwiches the rear leg 33a of the cart between it and the rear holding piece 63. Similar to the front pressing piece 56, the rear pressing piece 57 includes a rear plate-shaped portion 57a and a rear locking piece 57b.

[0050] As shown in FIG. 5, the standing piece 58 rises upward from the other end edge in the left-right direction of the connecting piece 63.

[0051] The lower support portion 59 is formed by bending a metal wire. In a plan view, the lower support portion 59 is fixed to the standing piece 58 in a state of protruding to the other side in the left-right direction with respect to the top plate 23. The lower support portion 59 is formed in a U-shape that opens upward when viewed from the front-rear direction and extends in the front-rear direction. In the illustrated example, the length of the lower support portion 59 in the front-rear direction is longer than that of the standing piece 58 and shorter than that of the leg portion 21.

[0052] The lower support portion 59 includes a lower fixing portion 59a, a lower extending portion 59b, and a lower regulating portion 59c. The lower fixing portion 59a is formed in a rectangular frame shape when viewed from the left-right direction. The lower fixing portion 59a is fixed to the standing piece 58 from the other side in the left-right direction. The lower extending portions 59b are respectively continuous with both end portions in the front-rear direction of the lower end portion of the lower fixing portion 59a. Each lower extending portion 59b extends from the lower fixing portion 59a toward the other side in the left-right direction. The lower regulating portion 59c is continuous with the other end portion in the left-right direction of each lower extending portion 59b. The lower regulating portion 59c is formed in a U-shape that opens downward when viewed from the left-right direction. Specifically, the lower regulating portion 59c includes a pair of vertical bar portions extending upward from each lower extending portion 59b and a horizontal bar portion connecting the upper ends of the vertical bar portions.

[0053] FIG. 6 is a perspective view of the upper member 51. As shown in FIGS. 2 and 6, the upper member 51 is detachably attached to the support column 22 (outer cylinder 35) to support the upper part of the chair 3. The upper member 51 includes an upper attachment portion 71, a connection portion 72, and an upper support portion 73.

[0054] As shown in FIG. 2, the upper attachment portion 71 is provided with a locking claw (not shown) that protrudes rearward. The upper attachment portion 71 is attached to the outer cylinder 35 so that the height can be changed by selectively hooking the locking claw on any one of a plurality of locking holes provided in each front side groove portion 35a. In the illustrated example, the upper attachment portion 71 is attached forward to a portion of the outer cylinder 35 located between adjacent trays 14 in the vertical direction. However, the attachment position of the upper attachment portion 71 can be changed as appropriate. Also, the upper attachment portion 71 may be attached to the outer cylinder 35 backward.

[0055] As shown in FIGS. 2 and 6, the connection portion 72 is formed by bending a metal wire into a frame shape. The connection portion 72 is formed in an L shape in plan view. Specifically, the connection portion 72 includes left and right arms 72a and front and rear arms 72b. The left and right arms 72a extend in the left - right direction in front of the upper attachment portion 71. One end portion of the left and right arms 72a in the left - right direction is fixed to the upper attachment portion 71. The front and rear arms 72b extend rearward from the other end portion of the left and right arms 72a in the left - right direction. The rear end portion of the front and rear arms 72b is located rearward with respect to the support column 22.

[0056] The upper support portion 73 is formed by bending a metal wire rod. In a plan view, the upper support portion 73 is fixed to the rear end portion of the front-rear arm 72b in a state of protruding to the other side in the left-right direction with respect to the top plate 23. That is, in the upper member 51 of the present embodiment, with the upper mounting portion 71 mounted forward with respect to the support column 22, the upper support portion 73 is routed via the connection portion 72 to a portion located rearward with respect to the support column 22. Thereby, compared with the case where the upper mounting portion 71 is provided rearward with respect to the support column 22, it is easier to secure the space of the portion located rearward with respect to the support column 22 in the space below the top plate 23.

[0057] As shown in FIG. 6, the upper support portion 73 is formed in a U shape that opens upward when viewed from the front-rear direction and extends in the front-rear direction. In the illustrated example, the length of the upper support portion 73 in the front-rear direction is shorter than that of the front support portion 59.

[0058] The upper support portion 73 includes an upper fixing portion 73a, an upper extending portion 73b, and an upper regulating portion 73c. The upper fixing portion 73a is formed in a frame shape when viewed from the left-right direction. The upper fixing portion 73a is fixed to the rear end portion of the front-rear arm 72b in a state of protruding upward with respect to the front-rear arm 72b.

[0059] The upper extending portion 73b is connected to each of the left and right end portions in the vertical intermediate portion of the upper fixing portion 73a. Each upper extending portion 73b extends from the upper fixing portion 73a toward the other side in the left-right direction. Note that the upper extending portion 73b protrudes to the other side in the left-right direction more than the lower extending portion 59b.

[0060] The upper regulating portion 73c is connected to the other side end portion in the left-right direction of each upper extending portion 73b. The upper regulating portion 73c is formed in a U shape that opens downward when viewed from the left-right direction. Specifically, the upper regulating portion 73c includes a pair of vertical rod portions extending upward from each upper extending portion 73b and a horizontal rod portion connecting the upper ends of the vertical rod portions.

[0061] (Usage method of the cart system 1) Next, a method of using the cart system 1 will be described. 1, the chair 3 faces the cart device 2 in the front-rear direction while in contact with the floor surface F. In the use state P2, an office worker can perform work using the table top 23 while seated on the seat 101. However, in the use state P2, the chair 3 is not limited to being placed rearward relative to the cart device 2 with the chair front-rear direction coinciding with the cart front-rear direction. For example, the chair 3 may be placed on one side (right side) of the cart device 2 in the left-right direction of the cart with the chair front-rear direction aligned with the cart left-right direction.

[0062] In addition, the cart device 2 of this embodiment can also be used by lowering the top plate 23, for example to the lowest position, so that part of the top plate 23 can be slipped under the top plate 201 of another top-mounted fixture 200 (for example, a fixture with a top plate).

[0063] On the other hand, when the cart system 1 is moved in the office space, the chair 3 is moved from the use state P2 to the loading state P1. Specifically, the chair 3 is first folded. Next, as shown in Figs. 3, 5, and 6, the seat 101 is inserted from above into the inside of the upper support part 73, and the horizontal rods 113, 116 are inserted from above into the inside of the lower support part 59, with the cart left-right direction and the chair front-rear direction being aligned. As a result, in the upper support part 73, the seat 101 is supported from below by the upper extension part 73b, and is supported from both sides in the left-right direction by the upper fixing part 73a and the upper regulating part 73c. ​​On the other hand, in the lower support part 59, the rear horizontal rod 116 is supported from below by the lower extension part 59b, and is supported from both sides in the left-right direction by the lower fixing part 59a and the lower regulating part 59c by the horizontal rods 113, 116. As a result, the chair 3 is loaded onto the cart device 2 with the support legs 100 spaced upward from the floor surface F. It is sufficient that the seat 101 and the horizontal rods 113, 116 of the chair 3 are housed inside the corresponding support portions 59, 73, and that either the seat 101 or the rear horizontal rod 116 is in contact with the corresponding extension portion 59b, 73b.

[0064] In the cart system 1 of the present embodiment, as shown in FIG. 2, in the mounted state P1, the chair 3 is supported by the chair support member 15 such that the center in the left - right direction of the chair is located behind the center of the top plate 23 in the front - rear direction of the cart. That is, in the mounted state P1, the cart device 2 protrudes forward with respect to the chair 3. Thereby, when approaching the cart device 2 to another top - plate accessory 200 in the mounted state P1, at least the front end portion of the top plate 23 (the portion of the top plate 23 located in front of the chair 3) can be made to slide under the top plate 201.

[0065] After shifting the chair 3 to the mounted state P1, the operator can move the entire cart system 1 forward, backward, or turn it by pushing or pulling the cart device 2 while gripping the gripping portion 12. Then, after moving the cart system 1 in the mounted state P1 to a required location, the chair 3 is shifted back to the use state P2 again. That is, by pulling up the chair 3, the seat 101 and the cross bars 113, 116 are detached from the corresponding support portions 59, 73. Thereby, the chair 3 is removed from the cart device 2. After that, by deploying the chair 3 to the use state P2, work can be performed while sitting on the chair 3 at the moving location. As a result, the workability of the operator can be improved and the burden on the operator can be reduced.

[0066] Here, the cart device 2 of the present embodiment includes a cart body 10, casters 17 that can travel on the floor surface F, and a gripping portion 12 provided at a portion of the cart body 10 located at the rear (the first side in the first direction). The cart body 10 is configured such that a chair support member 15 for removably supporting a chair (folding chair) 3 is provided on the other side in the left - right direction (the first side in the second direction) with respect to the top plate 23. According to this configuration, since the chair 3 is supported on the other side in the left-right direction with respect to the cart body 10, it is possible to prevent interference between the feet of the operator and the chair 3 when the operator grips the gripping portion 12 and moves the cart device 2. Moreover, since the chair 3 is removably supported by the cart body 10, the relative position between the cart device 2 and the chair 3 can be freely set during use of the chair 3. Thereby, usability can be improved. Further, since the chair 3 is disposed on the other side in the left-right direction with respect to the top plate 23, compared with a configuration in which the chair 3 is disposed at a position overlapping the top plate 23 in plan view, the height restrictions in the design of the top plate 23 and the chair 3 can be reduced, and the design freedom of the cart device 2 can be improved.

[0067] In the cart device 2 of the present embodiment, the chair support member 15 is configured to include attachment portions 55, 71 that are detachably attached to the cart body 10, and support portions 59, 73 that extend from the attachment portions 55, 71 to the other side in the left-right direction and support the chair 3. According to this configuration, since the chair support member 15 is detachably attached to the cart body 10 via the attachment portions 55, 71, it is possible to provide a cart device 2 with excellent versatility, such as providing the chair support member 15 to an existing cart body 10 or selecting whether or not to have the chair support member 15 depending on the cart device 2.

[0068] In the cart device 2 of the present embodiment, the support portions 59, 73 are formed of wire rods. According to this configuration, by forming the support portions 59 and 73 with wire rods, the support portions 59 and 73 can be provided at low cost, for example, by bending the wire rods. Further, compared with the case where the support portions 59 and 73 are formed of, for example, a plate material or the like, it is possible to suppress dust and the like from accumulating on the support portions 59 and 73. Thereby, the maintainability can be improved. Further, in the usage state P2, when an operator performs work facing the gripping portion 12, the portion on the opposite side (front side) of the operator with respect to the chair support member 15 can be visually recognized through the portion surrounded by the wire rods. Thereby, when sitting on the chair 3, it becomes easier to notice an article or the like that has fallen on the floor surface F. Further, compared with the case where the support portions 59 and 73 are formed of a plate material, the impact when contacting surrounding articles or the like can be reduced.

[0069] In the cart device 2 of the present embodiment, the support structure 20 supports the top plate 23 so as to be able to move up and down, and in the cart body 10, a lifting operation portion 13 for operating the lifting of the top plate 23 is provided at a portion located on one side in the left-right direction (the second side in the second direction). According to this configuration, since the lifting operation portion 13 is provided on the side opposite to the chair 3 in the mounted state P1, it is possible to suppress accidentally operating the lifting operation portion 13 during the mounting operation or removal operation of the chair 3 or the like. As a result, it is possible to suppress the top plate 23 from moving up and down unexpectedly and improve the reliability.

[0070] In the cart device 2 of the present embodiment, the chair support member 15 is configured to support the chair 3 behind the center of the top plate 23. According to this configuration, for example, when approaching the cart device 2 from the front of the cart device 2 to another furniture 200, interference between the chair 3 and the other furniture 200 can be suppressed. Further, since the chair 3 is mounted on the side of the gripping portion 12 with respect to the center of the top plate 23, the movement of the operator between the position facing the chair support member 15 (the loading and unloading or mounting position of the chair 3) and the position facing the gripping portion 12 (the operation position when moving the cart device 2) becomes easy. Thereby, the usability can be further improved.

[0071] In the cart device 2 of the present embodiment, the support structure 20 includes a leg portion 21 to which the caster 17 is attached, and a support column 22 that extends upward from the leg portion 21 and supports the top plate 23. The chair support member 15 (upper member 51) is configured to be attached to the support column 22 so that the height position in the vertical direction can be changed. According to this configuration, by changing the height position of the upper member 51, the support position of the chair 3 can be adjusted in the vertical direction.

[0072] Moreover, in the cart device 2 of the present embodiment, the support column 22 includes an outer cylinder 35 fixed to the leg portion 21, and an inner cylinder 36 supported so as to be movable in the vertical direction with respect to the outer cylinder 35. The upper member 51 is configured to be attached to the outer cylinder 35 among the support columns 22. According to this configuration, even if the height of the top plate 23 is changed, the support position of the chair 3 does not change. Therefore, the chair 3 can be stably supported regardless of the height of the top plate 23.

[0073] In the cart device 2 of the present embodiment, the lower member 50 is configured to be attached to the leg portion 21 of the support structure 20 to which the caster 17 is attached. According to this configuration, since the lower member 50 is attached to the leg portion 21 that functions as a strength member of the cart device 2, the chair 3 can be stably supported. Further, the lower member 50 can mainly receive the load of the chair 3, and it is easy to stably support the chair 3.

[0074] In the cart device 2 of the present embodiment, the chair support member 15 is configured to include an upper member 51 that supports the upper part of the chair 3 and a lower member 50 that supports the lower part of the chair 3. According to this configuration, by supporting the chair 3 on both the upper and lower sides, the chair 3 can be stably supported in the mounted state P1.

[0075] In the cart device 2 of the present embodiment, the length of the lower member 50 in the front-rear direction is configured to be shorter than the length of the upper member 51 (upper support portion 73) in the front-rear direction. According to this configuration, by supporting the lower part of the chair 3 with the lower member 50, the chair 3 can be stably supported in the mounted state P1. On the other hand, by shortening the length of the upper support portion 73, interference between the upper member 51 and the chair 3 can be avoided when mounting or removing the chair 3.

[0076] Since the cart system 1 of the present embodiment includes the cart device 2 and the chair 3 described above, a cart system 1 excellent in usability and design freedom can be provided.

[0077] In the cart system 1 of the present embodiment, by supporting both the front chair legs (first leg rods) 110 and the rear chair legs (second leg rods) 111 on the lower member 50, in the mounted state P1, the front chair legs 110 and the rear chair legs 111 can be prevented from separating, and the unfolding of the chair 3 into the use state P2 can be suppressed. Thereby, a cart system 1 with excellent reliability can be provided.

[0078] (Second Embodiment) FIG. 7 is a view of the cart device 2 according to the second embodiment as seen from the rear. In the cart device 2 shown in FIG. 7, the lower restricting portion 59c extends gradually inclined upward toward the other side in the left-right direction. That is, the inner dimension of the lower support portion 59 in the left-right direction gradually widens upward.

[0079] According to the present embodiment, for example, when mounting the chair 3, the cross bars 113, 116 can enter the inside of the lower support portion 59 obliquely from above. That is, even when the upper end portion of the chair 3 (for example, the backrest 102, etc.) is held and the chair is inclined in the left-right direction with respect to the cart in the vertical direction, the cross bars 113, 116 can enter the inside of the lower support portion 59. On the other hand, since the lower restricting portion 59c extends obliquely, when expanding the upper end opening of the lower support portion 59, it is not necessary to expand the length of the lower extending portion 59b in the left-right direction. Therefore, in the mounted state P1 of the chair 3, the cross bars 113, 116 can be stably supported by the lower extending portion 59.

[0080] In the illustrated example, the gap between the lower fixing portion 59a and the upper fixing portion 73a in the vertical direction is smaller than the outer diameter of the cross bars 113 and 116. Thereby, for example, when the chair 3 is mounted, it is possible to prevent the cross bars 113 and 116 from passing through the gap between the lower fixing portion 59a and the upper fixing portion 73a.

[0081] (Third Embodiment) FIG. 8 is a perspective view of the cart system 1. FIG. 9 is a view of the cart system 1 seen from the rear. FIG. 10 is a side view of the cart system 1. FIG. 11 is a bottom view of the cart system 1. In the cart system 1 shown in FIGS. 8 to 11, the chair support member 190 includes a lower member 191 and an upper member 192.

[0082] The lower member 191 is detachably attached to the leg portion 21 and supports the lower portion of the chair 3. The lower member 191 includes a lower attachment portion 210, a connecting piece 211, a standing piece 212, a pressing piece 213, and a lower support portion 214. As shown in FIG. 9, the lower attachment portion 210 is formed by bending a plate material. The lower attachment portion 210 is formed in a U shape that opens downward. The lower attachment portion 210 is mounted so as to cover from above the cart rear leg 33a located on the other side in the left - right direction among the pair of cart rear legs 33. A slit 210a is formed in a wall portion located on one side in the left - right direction of the lower attachment portion 210 and protruding below the cart rear leg 33a.

[0083] The connecting piece 211 extends from the lower attachment portion 210 toward the other side in the left - right direction. In plan view, the other end portion of the connecting piece 211 in the left - right direction is located outside the top plate 23. The standing piece 212 extends upward from the tip end portion (the other end portion in the left - right direction) of the connecting piece 211.

[0084] As shown in FIGS. 9 and 11, the pressing piece 213 sandwiches the rear cart leg 33a between it and the lower mounting portion 210. Specifically, the pressing piece 213 is disposed below the rear cart leg 33a so as to cross the lower end opening of the lower mounting portion 210. One end of the pressing piece 213 in the left-right direction is hooked to the lower mounting portion 210 through the slit 210a. The other end of the pressing piece 213 in the left-right direction is fixed to the connecting piece 211 by screws.

[0085] As shown in FIGS. 8 to 10, the lower support portion 214 is configured such that the plate material is bent in an L shape when viewed from the front-rear direction. The lower support portion 214 includes a lower extension portion 214a and a lower regulating portion 214b. The lower extension portion 214a extends from the upper end edge of the standing piece 212 toward the other side in the left-right direction. The lower regulating portion 214b extends upward from the other end edge in the left-right direction of the lower extension portion 214a. A notch portion 214c is formed in the lower support portion 214. The notch portion 214c is formed so as to straddle the lower extension portion 214a and the lower regulating portion 214b.

[0086] The upper member 192 is detachably attached to the support column 22 (outer cylinder 35) and supports the upper part of the chair 3. The upper member 192 includes an upper mounting portion 230, a connecting portion 231, a base frame 232, and an upper support portion 233. The upper mounting portion 230 is provided with a locking claw (not shown) that protrudes rearward. The upper mounting portion 230 is attached to the outer cylinder 35 forward by selectively hooking the locking claw to any one of a plurality of locking holes provided in each front side groove portion 35a.

[0087] The connecting portion 231 is formed by bending a metal pipe. The connecting portion 231 is formed in an L shape in plan view. Specifically, the connecting portion 231 includes a left-right arm 231a and a front-rear arm 231b. The left and right arms 231a extend in the left-right direction in front of the upper mounting portion 71. One end portion of the left and right arms 231a in the left-right direction is fixed to the upper mounting portion 230. The front and rear arms 231b extend rearward from the other end portion of the left and right arms 231a in the left-right direction. The rear end portion of the front and rear arms 231b is located rearward with respect to the support column 22.

[0088] The base frame 232 is formed by bending a metal pipe. The base frame 232 is formed in a U-shape that opens downward in a side view. The front and rear arms 231b are fixed to an intermediate portion of the base frame 232 in the up-down direction. The lower end portion of the base frame 232 is fixed to the lower regulating portion 214b. That is, the chair support member 219 of the present embodiment has a lower member 191 connected to the leg portion 21 and an upper member 192 connected to the support column 22, which are connected via the base frame 232. Thereby, the chair support member 190 is connected to the cart body 10 in a state straddling both the support column 22 and the leg portion 21.

[0089] The upper support portion 233 is fixed to the upper end portion of the base frame 232 (the portion protruding above the front and rear arms 231b). The upper support portion 233 is formed by bending a metal pipe. The upper support portion 233 is formed in an L-shape when viewed from the front-rear direction and in a downward U-shape when viewed from the left-right direction. The upper support portion 233 overlaps the lower support portion 214 in a plan view.

[0090] The upper support portion 233 includes an upper extension portion 233a and an upper regulating portion 233b. The upper extension portion 233a extends from the base frame 232 to the other side in the left-right direction. The upper regulating portion 233b extends upward from the other end portion of the upper extension portion 233a in the left-right direction.

[0091] Here, the chair support member 190 is provided with stabilizer legs 250. The stabilizer legs 250 suppress the tipping of the cart device 2 caused by the load of the chair 3 in the mounted state P1. The stabilizer legs 250 include a fixing portion 250a and a protruding portion 250b. The fixing portion 250a penetrates the connecting piece 211 in the vertical direction and is fixed to the standing piece 212.

[0092] The protruding portion 250b extends downward from the fixing portion 250a. Specifically, the protruding portion 250b extends toward the other side in the left - right direction as it extends downward. The lower end portion of the protruding portion 250b is close to the floor surface F in a state where the floor surface F is a flat surface and all the casters 17 are in contact with the floor surface F. On the other hand, when the cart device 2 tilts around an axis (roll axis) along the front - rear direction, the lower end portion of the protruding portion 250b contacts the floor surface F, thereby restricting the rotation of the cart device 2 around the roll axis. In plan view, at least the lower end portion (the contact portion with the floor surface F) of the protruding portion 250b is located outside the cart body 10. Therefore, the lower end portion of the stabilizer leg 250 can contact the floor surface F in a region outside the cart body 10 in plan view. In the illustrated example, the lower end portion of the protruding portion 250b is located inside the left - right direction with respect to the other end portion in the left - right direction of the chair support member 190. However, the lower end portion of the protruding portion 250b may be located outside the left - right direction of the chair support member 190.

[0093] As shown in FIG. 9, in the folded state, the front cross bar 113 and the rear cross bar 116 of the chair 3 of the present embodiment are arranged at the same height in the vertical direction. "The same height" preferably means that at least the lower end edges of the front cross bar 113 and the rear cross bar 116 are arranged at the same position in the vertical direction. That is, if at least the lower end edges of the front cross bar 113 and the rear cross bar 116 are arranged at the same position in the vertical direction, the outer diameters of the front cross bar 113 and the rear cross bar 116, the positions of the upper end edges of the front cross bar 113 and the rear cross bar 116, etc. can be appropriately changed. In the present embodiment, the front cross bar 113 and the rear cross bar 116 have the same shape and size, and the lower end edges and the upper end edges are arranged at the same position in the vertical direction.

[0094] At least on the lower surfaces of the front cross bar 113 and the rear cross bar 116, elastic deformable pads 140 are provided. In the illustrated example, a plurality of pads 140 are provided at intervals in the left-right direction of the chair on each of the front cross bar 113 and the rear cross bar 116.

[0095] (Method of using the cart system 1) Subsequently, the method of using the cart system 1 will be described. In the cart system 1 of the present embodiment, in the use state P2 shown in FIG. 8, with the chair 3 grounded on the floor surface F, it faces the cart device 2 in the front-rear direction. In the use state P2, the operator can perform work using the top plate 23 while sitting on the seat 101. However, in the use state P2, the chair 3 is not limited to being arranged behind the cart device 2 with the front-rear direction of the chair aligned with the front-rear direction of the cart. For example, the chair 3 may be arranged on one side (right side) in the left-right direction of the cart device 2 with the front-rear direction of the chair along the left-right direction of the cart.

[0096] On the other hand, when moving the cart system 1 in the work space, the chair 3 is shifted from the use state P2 to the mounted state P1. Specifically, first, the chair 3 is set in the folded state. Subsequently, as shown in FIGS. 9 and 10, with the left-right direction of the cart aligned with the front-rear direction of the chair, the seat 101 is supported by the upper member 192, and the cross bars 113 and 116 are supported by the lower member 191. Specifically, the seat 101 enters from above into the portion surrounded by the upper support portion 233 and the base frame 232 among the upper member 192. Thereby, in the upper member 192, the seat 101 is supported from below by the upper extension portion 233a, and is supported from both sides in the left-right direction by the base frame 232 and the upper restricting portion 233b. On one hand, the cross bars 113, 116 are inserted from above into the portion surrounded by the base frame 232 and the lower support portion 214. As a result, the cross bars 113, 116 are supported from below by the lower extension portion 214a via the pad 140, and are supported from both left and right sides by the base frame 232 and the lower regulating portion 214b. Consequently, the chair 3 is mounted on the cart device 2 with the support legs 100 separated upward from the floor surface F. Note that the chair 3 only needs to have the seat 101 and the cross bars 113, 116 accommodated inside the corresponding support portions 214, 233, and either the seat 101 or the cross bars 113, 116 only needs to be in contact with the corresponding extension portions 214a, 233a.

[0097] After shifting the chair 3 to the mounted state P1, the operator can move the entire cart system 1 forward, backward, or turn it by pushing or pulling the cart device 2 while gripping the gripping portion 12. Then, after moving the cart system 1 in the mounted state P1 to a required location, the chair 3 is shifted back to the use state P2 again. That is, by pulling up the chair 3, the seat 101 and the cross bars 113, 116 are detached from the corresponding support portions 214, 233. As a result, the chair 3 is removed from the cart device 2. After that, by deploying the chair 3 to the use state P2, work can be performed while sitting on the chair 3 at the moving location. As a result, the workability of the operator can be improved, and the burden on the operator can be reduced.

[0098] As described above, in this embodiment, the chair support member 190 is configured to be provided with the stabilizing legs 250 that extend downward from the chair support member 190 and can contact the floor surface F in a region outside the support structure 20 in a plan view. According to this configuration, when the cart device 2 tilts around the roll axis due to the load of the chair 3 in a state where the chair 3 is mounted on the chair support member 190, the stabilizing leg 250 contacts the floor surface F. Thereby, the tipping of the cart device 2 can be suppressed. Note that the region outside the support structure 20 may be any region outside the ground contact position of each caster 17 with the floor surface F in a plan view of the support structure 20. That is, in a configuration where the chair 3 is mounted on the left side with respect to the support column 22, the stabilizing leg 250 can preferably contact the floor surface F in a region outside the ground contact position with the floor surface F in a state where the caster 17 located on the left side with respect to the support column 22 faces the rightmost side (the inner side in the left-right direction).

[0099] In the present embodiment, the front cross bar (first cross bar) 113 and the rear cross bar (second cross bar) 116 of the chair 3 are arranged at the same height in the vertical direction in the folded state of the chair 3. According to this configuration, in the mounted state P1 of the chair 3, by the chair support member 190 supporting both the cross bars 113 and 116, the chair 3 can be stably supported by the chair support member 190 as compared with, for example, a case where the chair support member 190 contacts only one of the two cross bars. Further, when mounting or removing the chair 3 with respect to the chair support member 190, since it is easy to grip the cross bars 113 and 116 together, it is possible to suppress the chair front legs (first leg bars) 110 and the chair rear legs (second leg bars) 111 from unexpectedly deploying.

[0100] (Modification example) As shown in FIG. 12, a weight portion 251 may be provided on the side of the cart body 10 opposite to the side (one side in the left-right direction) where the chair support member 190 is attached. In the illustrated example, the weight portion 251 is provided in a portion of the lower surface of the leg portion 21 that is located on one side in the left-right direction with respect to the support column 22.

[0101] In the present embodiment, by providing the weight portion on the side opposite to the chair support member 190, it is easy to balance with the weight of the chair 3 by the weight portion 251. Thereby, it is easy to suppress the tipping of the cart device 2.

[0102] (Fourth Embodiment) FIG. 13 is a perspective view of the cart system 1. FIG. 14 is a view of the cart system 1 seen from the rear. FIG. 15 is a side view of the cart system 1. FIG. 16 is a bottom view of the cart system 1. In the cart system 1 shown in FIGS. 13 to 16, the chair support member 190 includes a lower member 191 and an upper member 192.

[0103] The lower member 191 is connected to the upper member 192 via a base frame 232. That is, the chair support member 190 of the present embodiment is connected to the cart body 10 only by the support column 22. The lower member 191 includes a lower support portion 214. The lower support portion 214 is formed in a U shape that opens upward. The lower support portion 214 includes a connection piece 260, a lower extension portion 261, and a lower restricting portion 262.

[0104] The connection piece 260 extends in the front-rear direction with the left-right direction as the thickness direction. The lower end portion of the base frame 232 is fixed to the middle portion of the connection piece 260 in the front-rear direction. The lower extension portion 261 extends from the lower end portion of the connection piece 260 to the other side in the left-right direction. The lower restricting portion 262 extends upward from the other end portion of the lower extension portion 261 in the left-right direction. A notch portion 214c is formed in the lower support portion 214 so as to straddle the lower extension portion 261 and the lower restricting portion 262.

[0105] The stabilizing leg 270 includes a leg body 270a and a sub-caster 270b. The leg body 270a is integrally formed with the base frame 232. The leg body 270a extends downward from the base frame 232 through the notch portion 214c. In the illustrated example, the leg body 270a extends toward the other side in the left-right direction as it goes downward, and then extends linearly downward. The sub-caster 270b is provided at the lower end of the leg body 270a. In the present embodiment, the lower end of the sub-caster 270b is arranged at the same height as the lower end of the caster 17 provided on the leg portion 21. That is, the sub-caster 270b is grounded on the floor surface F together with the caster 17 and is provided so as to be rollable by the friction with the floor surface F. In plan view, the sub-caster 270b is arranged at a position overlapping with the lower support portion 214 outside the cart body 10. Therefore, the sub-caster 270b contacts the floor surface F in a region outside the cart body 10 in plan view. Note that the lower end of the sub-caster 270b may be located above the lower end of the caster 17.

[0106] In the present embodiment, the stabilizer leg 270 is configured to include a leg body 270a extending downward from the chair support member 190 and a sub-caster 270b provided at the lower end of the leg body 270a. According to this configuration, even when the stabilizer leg 270 is in contact with the floor surface F during the traveling of the cart device 2, it is possible to suppress the traveling of the cart device 2 from being hindered by the rolling of the sub-caster 270b as the cart device 2 travels. Therefore, the stabilizer leg 270 can be extended downward, and it is easy to suppress the cart device 2 from tipping over.

[0107] In the present embodiment, the stabilizer leg 270 is configured to contact the floor surface F via the sub-caster 270b in a state where the chair support member 190 is supported only by the support column 22. According to this configuration, the load of the chair 3 is dispersed to the floor surface F via the sub-caster 270b. Thereby, the number of connection points of the chair support member 190 to the cart body 10 can be reduced. As a result, the attachment work of the chair support member 190 to the cart body 10 can be simplified.

[0108] In the above-described embodiments, the configuration in which the chair support member 190 is connected only to the column 22 has been described, but the present invention is not limited to this configuration. The chair support member 190 may be configured to be connected only to the leg portion 21. Even in this case, by grounding the chair support member 190 to the floor surface F via the sub-caster 270b, the chair support member 190 (chair 3) can be supported by the leg portion 21 and the floor surface F.

[0109] (Other Modifications) As described above, the preferred embodiments of the present invention have been described, but the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other changes to the configuration are possible without departing from the spirit of the present invention. The present invention is not limited by the above description and is limited only by the appended claims. In the above-described embodiments, the configuration in which the chair support member 15 is attached to the support structure 20 has been described, but the present invention is not limited to this configuration. The chair support member 15 may be attached to any position of the cart body 10, such as the top plate 23. In the above-described embodiments, the configuration in which the lower member 50 is attached to the leg portion 21 and the upper member 51 is attached to the column 22 has been described, but the present invention is not limited to this configuration. The attachment positions of the lower member 50 and the upper member 51 can be arbitrarily set, such as attaching both the lower member 50 and the upper member 51 to the column 22. In the above-described embodiments, the configuration in which the chair support member 15 includes the lower member 50 and the upper member 51 has been described, but the present invention is not limited to this configuration. The chair support member 15 may be configured to include either the lower member 50 or the upper member 51, or may be configured to include a support member separate from the lower member 50 and the upper member 51.

[0110] In the above-described embodiments, the configuration in which the support structure 20 includes the leg portion 21 and the column 22 has been described, but the present invention is not limited to this configuration. The support structure 20 may be, for example, a box shape or the like. In the above-described embodiments, the configuration in which the chair 3 is supported only on the other side in the left-right direction has been described, but the present invention is not limited to this configuration. The chair 3 may be configured to be supported on both the left and right sides of the cart body 10. In the above-described embodiments, the configuration in which the chair support member 15 is detachably attached to the cart body 10 has been described, but the configuration is not limited thereto. The chair support member 15 may be fixedly attached to the cart body 10 in a non-detachable manner.

[0111] In the above-described embodiments, the case where the support portions 59, 73 are configured by bending a wire material has been described, but the configuration is not limited thereto. For example, the support portions 59, 73 may be configured by joining a plurality of linearly formed wire materials to each other by welding or the like. Further, the support portions 59, 73 may be configured by a plate material or the like. In the above-described embodiments, the configuration in which the chair 3 is supported near the rear portion of the cart body 10 in the mounted state P1 has been described, but the configuration is not limited thereto. In the above-described embodiments, the configuration in which the chair 3 is supported by the cart device 2 with the front-rear direction of the chair along the left-right direction of the cart has been described, but the configuration is not limited thereto. If the chair 3 is supported on the other side in the left-right direction with respect to the cart device 2, the chair 3 may be supported by the cart device 2 with the left-right direction of the chair along the left-right direction of the cart. In the cart device 2 according to the above-described embodiments, when it is not necessary to mount the chair 3, it is also possible to mount another article or the like on the chair support member 15. Examples of another article include a tissue box, a garbage bag, a document binder, an electric cord, a towel, and the like.

[0112] In the above-described embodiments, the configuration in which the support structure 20 includes only one support column 22 has been described, but the configuration is not limited thereto. As shown in FIG. 17, the support structure 20 may be configured to include two support columns 22. In this case, the chair support member 190 is connected to at least one of the two support columns 22. In the above-described embodiments, the configuration in which the stabilizing leg extends from the chair support member 190 by one has been described, but the configuration is not limited thereto. A plurality of stabilizing legs may be provided with respect to the chair support member 190. In the above-described embodiment, the configuration in which the stabilizing legs always extend downward has been described, but the present invention is not limited to this configuration. The stabilizing legs may be configured to be foldable.

[0113] The above-described embodiment can be appended as follows. [Appendix 1] A first leg rod and a second leg rod that are rotatably connected so as to overlap each other in the folded state and extend in directions intersecting each other in the deployed state, A seat that is arranged along the first leg rod and the second leg rod in the folded state, has a seating surface facing upward in the deployed state, and is rotatably connected to each of the first leg rod and the second leg rod, The first leg rod A pair of first vertical rods extending in the vertical direction with a space therebetween in the left-right direction of the chair, A first horizontal rod connecting the pair of first vertical rods, The second leg rod A pair of second vertical rods extending in the vertical direction with a space therebetween in the left-right direction of the chair, A second horizontal rod connecting the pair of second vertical rods, The first horizontal rod and the second horizontal rod are chairs arranged at the same height in the vertical direction in the folded state.

[0114] According to the configuration of Appendix 1, when carrying the chair in the folded state, it is easy to grip the first horizontal rod and the second horizontal rod together, so it is possible to suppress the unexpected deployment of the first leg rod and the second leg rod.

[0115] In addition, within the scope not departing from the gist of the present invention, it is possible to appropriately replace the components in the above-described embodiment with well-known components, and it is also possible to appropriately combine the above-described various modification examples.

Explanation of Reference Numerals

[0116] 1: Cart system 2: Cart device 3: Chair (folding chair) 10: Cart body 12: Gripping part 13: Lifting operation part 15: Chair support member 17: Caster 20: Support structure 21: Leg part 22: Column 23: Top plate 50: Lower member 51: Upper member 55: Lower attachment part (attachment part) 59: Lower support part (support part) 71: Upper attachment part (attachment part) 73: Lower support part (support part) 101: Seat 101a: Seating surface 110: Front chair leg (first leg bar) 111: Rear chair leg (second leg bar) 112: Front vertical bar (first vertical bar) 113: Front horizontal bar (first horizontal bar) 115: Rear vertical bar (second vertical bar) 116: Rear horizontal bar (second horizontal bar) 190: Chair support member 210: Lower attachment part (attachment part) 214: Upper support part (support part) 230: Upper attachment part (attachment part) 233: Upper support part (support part) 250: Stabilizing leg 251: Weight part 270: Stabilizing leg 270a: Leg body 270b: Sub-caster F: Floor surface

Claims

1. A cart body having a top plate and a support structure that supports the top plate from below; Casters for supporting the cart body and for allowing the cart to run on a floor surface; A gripping portion is provided on a portion of the cart body that is located on a first side in a first direction that intersects with the up-down direction, The cart device includes a chair support member provided on the cart body for removably supporting a folding chair on a first side of the tabletop in a second direction intersecting the first direction when viewed from above and below.

2. The chair support member is A mounting portion that is detachably attached to the cart body; The cart apparatus according to claim 1 , further comprising: a support portion extending from the mounting portion to a first side in the second direction and supporting the folding chair.

3. The cart apparatus according to claim 2 , wherein the support portion is formed of a wire material.

4. The support structure supports the top plate so that the top plate can be raised and lowered, The cart device according to any one of claims 1 to 3, wherein a lifting / lowering operation unit for lifting and lowering the tabletop is provided in a portion of the cart body located on the second side in the second direction.

5. 4. The cart device according to claim 1, wherein the chair support member supports the folding chair on a first side in the first direction with respect to a center of the tabletop in the first direction.

6. The support structure includes: A leg portion to which the caster is attached; A support extending upward from the leg portion and supporting the top plate, 4. The cart apparatus according to claim 1, wherein the chair support member is attached to the support pillar so that a height position in the up-down direction can be changed.

7. The chair support member is an upper member that supports an upper portion of the folding chair; 4. The cart device according to claim 1, further comprising: a lower member for supporting a lower portion of the folding chair.

8. The cart apparatus according to claim 7 , wherein a length of the lower member in the first direction is longer than a length of the upper member in the first direction.

9. A cart device as described in any one of claims 1 to 3, wherein the chair support member is provided with a stabilizing leg that extends downwardly beyond the chair support member and is capable of contacting the floor surface in an area outer than the support structure when viewed in a plan view.

10. The stabilizing legs include: a leg body extending downward from the chair support member; The cart apparatus according to claim 9, further comprising: a sub-caster provided at a lower end of the leg body.

11. The cart device according to claim 1 , wherein a weight portion is provided on a portion of the cart body that is located on the second side in the second direction.

12. A cart device according to any one of claims 1 to 3; a folding chair removably supported on the chair support member of the cart device; The folding chair is a first leg rod and a second leg rod rotatably connected to each other so as to overlap each other in a folded state and to extend in directions intersecting each other in an unfolded state; a seat having a seating surface that is disposed along the first leg rod and the second leg rod in the folded state and faces upward in the unfolded state, the seat being rotatably connected to each of the first leg rod and the second leg rod; A cart system, wherein the chair support member supports both the first leg rod and the second leg rod of the folding chair in the folded state.

13. The first leg includes: A pair of first vertical rods extending in the up-down direction with a gap between them in the left-right direction of the chair; A first horizontal rod connecting the pair of first vertical rods, The second leg includes: A pair of second vertical rods extending in the up-down direction with a gap in the left-right direction of the chair; A second horizontal rod connecting the pair of second vertical rods, The first horizontal rod and the second horizontal rod are disposed at the same height in the up-down direction in the folded state, The cart system of claim 12 , wherein the chair support member supports the first and second horizontal rods of the folding chair in the folded state.

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