JP2017012625A - Option fitting structure and cart device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an option fitting structure to which an option member is stably fitted, while preventing rattling, and a cart device.SOLUTION: An option fitting structure 100 for fitting an option member 10 to a plurality of horizontal rails 11c1 disposed apart in the vertical direction, includes: a fitting member 11b including fitting parts 11b1 that are elastically-deformably fitted to outer peripheries of the respective horizontal rails 11c1, and connection parts 11b2, 11b3, and 11b4 that connect the fitting parts 11b1 to be fitted to the plurality of horizontal rails 11c1 to each other; and engagement parts 10j provided on the option member 10 in such a manner as to have a downward hook-like shape and engaged with the outer peripheries of the respective fitting parts 11b1.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an option mounting structure and a cart apparatus.

  Generally, in a public facility such as an office or a hospital, furniture such as a shelf on which articles can be placed is installed in order to efficiently perform work. Further, a configuration in which optional members such as curtain rails and rails are attached around the fixture is known.

  For example, in a fixture provided with a shelf in which a shelf board is configured by a wire material such as a wire, a downward U-shape of an optional member is formed on a wire material such as a wire extending in a substantially horizontal direction and spaced apart in the vertical direction. The thing which made the latching | locking part made latch from the upper direction is proposed (refer the following patent document 1).

  Further, in a fixture having a frame constituted by a plurality of horizontal rails that extend in the horizontal direction and are spaced apart in the vertical direction, an upper hook that is elastically engaged with the upper horizontal rail from above, and a lower horizontal rail There has also been proposed a tray rail having a lower hook that is elastically engaged from below (see Patent Document 2 below).

Utility Model Registration No. 3126332 Japanese Patent No. 4943251

Here, in the configuration described in Patent Document 1, if the clearance between the locking portion of the option member and the wire is small, the wire cannot be disposed inside the locking portion. Provided. For this reason, a clearance gap arises between a latching | locking part and a wire, and there exists a problem that a latching | locking part, ie, an option member, will rattle by the load of an option member.
Further, in the configuration described in Patent Document 2, since the lower hook is elastically engaged with the horizontal rail from below, for example, when an external force in the direction of separating the tray rail from the frame is applied, the tray rail However, there is a possibility that the upper side hook engaged with the upper side rail rotates around and the engagement between the lower side rail and the lower hook is easily released.

  The present invention has been made in view of the above circumstances, and provides an option mounting structure and a cart device in which an option member is stably mounted while suppressing backlash.

In order to achieve the above object, the present invention employs the following means.
In other words, the option mounting structure according to the present invention is an option mounting structure for mounting an option member to a plurality of horizontal rails that are spaced apart in the vertical direction, and is formed of resin and fits on the outer periphery of each horizontal rail. A fitting member having a fitting part to be joined, and a connecting member for connecting the fitting parts to be fitted to each of the plurality of horizontal bars, and the option member is provided so as to form a downward hook shape, And an engaging portion engaged with the outer periphery of the fitting portion from above.

In the option mounting structure configured as described above, a fitting portion formed of resin is fitted to the outer periphery of the horizontal rail, and the engaging portion of the option member having a downward hook shape is engaged to the outer periphery of the fitting portion. ing. That is, the fitting portion of the fitting member is interposed between the horizontal rail and the optional member. Since the fitting portion formed of resin is elastically deformed corresponding to the shape of the gap (clearance) between the engaging portion and the horizontal beam, the optional member can be attached to the horizontal beam while suppressing rattling. .
In addition, the fitting portion of the fitting member is fitted to each of the plurality of horizontal bars that are spaced apart in the vertical direction, and the engaging portion of the optional member that has a downward hook shape is formed on the outer periphery of each fitting portion from above. Is engaged. That is, since the engaging portion having the downward hook shape of the optional member can be engaged with the horizontal rail from above and below at two locations, the optional member can be stably attached.

  Further, in the option mounting structure according to the present invention, the option member has a retaining portion that protrudes toward the connecting portion, and the fitting member has a protruding portion that protrudes from the connecting portion toward the option member. It is preferable that the protruding portion is in contact with the upper part of the retaining portion.

  In the option mounting structure configured as described above, the protruding portion that protrudes from the connecting portion of the fitting member toward the option member is in contact with the upper portion of the retaining portion of the optional member that protrudes toward the connecting portion. Therefore, the upward movement of the option member having the engaging portion that engages with the fitting portion from above is suppressed.

  In the option mounting structure according to the present invention, the engaging portion may be formed of resin by engaging with an outer periphery of each fitting portion.

  In the option mounting structure configured as described above, the engaging portion formed of resin is engaged with the outer periphery of the fitting portion. Therefore, since the engaging portion is elastically deformed corresponding to the outer peripheral shape of the fitting portion, the rattling of the option member having the engaging portion can be further suppressed.

  Further, in the option mounting structure according to the present invention, the fitting member includes a lever portion that extends downward from the projecting portion and is elastically deformable in a direction to release the engagement between the retaining portion and the projecting portion. You may have.

  In the option mounting structure configured as described above, when the lever portion is operated in a direction to release the engagement between the retaining portion of the option member and the protruding portion of the fitting member, the lever portion is elastically deformed in the direction to release the lever portion. . Along with this, the protruding portion located at the upper part of the lever portion moves to a position where it does not come into contact with the retaining portion, and the engagement between the retaining portion of the option member and the projecting portion of the fitting member is released.

  In addition, the cart device according to the present invention is the option described in any one of the above-mentioned items: a base portion capable of traveling on a floor surface, a support body extending upward from the base portion, and a horizontal rail extending from the support body And an article placing member as an optional member that is attached by an attachment structure and on which an article can be placed.

In the cart device configured as described above, the fitting portion formed of resin is fitted to the outer periphery of the horizontal rail, and the article mounting member is engaged as an optional member having a downward hook shape on the outer periphery of the fitting portion. The parts are engaged. That is, the fitting portion of the fitting member is interposed between the horizontal rail and the article placement member. Since the fitting part formed of resin is elastically deformed corresponding to the shape of the gap (clearance) between the engaging part and the horizontal rail, the article mounting member is extended from the support body while suppressing rattling. Can be attached to the pier.
In addition, the fitting portion of the fitting member is fitted to each of the plurality of horizontal bars that are spaced apart from each other in the vertical direction, and the engaging portion of the article mounting member having a downward hook shape is provided on the outer periphery of each fitting portion. It is engaged from above. That is, since the engaging portion having the downward hook shape of the article placing member can be engaged with the horizontal rail from above and below at two locations, the article placing member can be stably attached.

  According to the option mounting structure and the cart apparatus according to the present invention, the option member can be stably mounted while suppressing backlash.

It is a perspective view of the cart apparatus concerning one embodiment of the present invention. It is a perspective view containing the main tray with which the cart apparatus which concerns on one Embodiment of this invention is equipped, and an article mounting part. FIG. 3 is a perspective view including a main tray and an article placement unit included in the cart device according to the embodiment of the present invention, and is a diagram in which the main tray and one article placement unit are moved downward from the state illustrated in FIG. 2. . It is a front view containing the support body with which the cart apparatus which concerns on one Embodiment of this invention is provided, and the support bracket of an article mounting part. It is AA sectional drawing of FIG. It is a perspective view of the article mounting part with which the cart apparatus concerning one embodiment of the present invention is provided. 1 is a perspective view including a support provided in a cart device according to an embodiment of the present invention and a support bracket of an article placement section (the article placement section is indicated by a two-dot chain line). It is a perspective view containing the support body with which the cart apparatus which concerns on one Embodiment of this invention is equipped, the article mounting part, and the support bracket of an article mounting part. It is a three-view figure of the support bracket of the article mounting part with which the cart apparatus which concerns on one Embodiment of this invention is equipped, (a) is a top view, (b) is a side view, (c) is a front view. It is a fragmentary perspective view of the support bracket of the article mounting part with which the cart apparatus concerning one embodiment of the present invention is provided. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a perspective view of the fitting member interposed between the support bracket of the article placement part with which the cart device concerning one embodiment of the present invention is provided, and the article placement part. It is DD sectional drawing of FIG. It is a perspective view for demonstrating the operation | movement which attaches the support bracket of the article mounting part with which the cart apparatus which concerns on one Embodiment of this invention is provided to the support body of a cart apparatus. It is the perspective view of the main tray with which the cart apparatus concerning one embodiment of the present invention is provided, (a) is the perspective view seen from the upper part, (b) is the perspective view seen from the lower part. It is a three-view figure of the main tray with which the cart apparatus which concerns on one Embodiment of this invention is equipped, (a) is a bottom view, (b) is a side view, (c) is a front view. The perspective view containing the base part of the cart apparatus which concerns on one Embodiment of this invention, a support body, and the support bracket of a main tray (The perspective view which abbreviate | omitted the support bracket of the main tray, the article mounting part, and the article mounting part) ). It is the perspective view which looked at the support bracket of the main tray with which the cart apparatus which concerns on one Embodiment of this invention with the main tray removed from the upper direction. It is the perspective view which looked at the support bracket of the main tray with which the cart apparatus which concerns on one Embodiment of this invention with the main tray removed. It is the bottom view which looked at the support bracket of the main tray with which the cart apparatus which concerns on one Embodiment of this invention with the state which attached the main tray from the downward direction. It is the side view which expanded a part by the side of the support body of the support bracket of the main tray with which the cart apparatus which concerns on one Embodiment of this invention with the main tray removed. It is a perspective view of a lock member with which a cart device concerning one embodiment of the present invention is provided, (a) is a perspective view seen from the front side of a cart device, (b) is a perspective view seen from the back side of a cart device. It is. It is a schematic diagram explaining operation | movement when mounting a main tray to the support bracket with which the cart apparatus which concerns on one Embodiment of this invention is provided. It is a schematic diagram explaining operation | movement when mounting a main tray to the support bracket with which the cart apparatus which concerns on one Embodiment of this invention is provided. It is a schematic diagram explaining operation | movement when removing the support bracket of a main tray from the support body with which the cart apparatus which concerns on one Embodiment of this invention is provided. It is a schematic diagram explaining operation | movement when removing the support bracket of a main tray from the support body with which the cart apparatus which concerns on one Embodiment of this invention is provided.

  Hereinafter, an embodiment of a cart apparatus according to the present invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

  FIG. 1 is a perspective view of a cart device according to an embodiment of the present invention. FIG. 2 is a perspective view including a main tray and an article placement portion of the cart device according to the embodiment of the present invention. FIG. 3 is a perspective view including a main tray and an article placement unit included in the cart device according to the embodiment of the present invention, and moves the main tray and one article placement unit downward from the state shown in FIG. It is a figure.

  In the following description, the side where the user grips the handle 5e and faces the cart apparatus 1 is the rear side, and the side on which the user pushes the handle 5e to advance the cart apparatus 1 is the front side. A direction connecting the rear side and the front side is defined as a front-rear direction or a depth direction. The horizontal direction orthogonal to the front-rear direction is the width direction. Further, with the direction in which the user holds the handle 5e and operates the cart device 1 as a reference, the right side (the right front side of the paper surface shown in FIG. 1) is the right side, and the left side (the left rear side of the paper surface shown in FIG. 1) is the left side. To do.

  The cart apparatus 1 is a fixture for placing and transporting articles such as document files and medicine bottles in offices and hospitals. As shown in FIG. 1, a cart body 3 and a cart body 3 installed on the floor surface are provided. A pocket tray (article placing member, optional member) 10 supported by the machine, a pocket tray support mechanism 11 that supports the pocket tray 10, a main tray 2 supported by the cart body 3, and a main that supports the main tray 2. A tray support mechanism 4 and a top plate unit 5 supported by the cart body 3 are provided. As shown in FIGS. 2 and 3, in the cart apparatus 1, the pocket tray 10 and the main tray 2 are mounted on the cart body 3 so that the position in the vertical direction can be changed.

(Cart body)
As shown in FIG. 1, the cart body 3 includes a leg portion (base portion) 3 a, a support base (support body) 3 b, and an elevating operation portion (not shown). The leg portion 3a includes four linear leg rods 3a1, a base portion 3a2 to which the bases of these leg rods 3a1 are connected, a caster 3a3 attached to the tip of each leg rod 3a1, and a caster 3a3. And a lock portion 3a4 for locking. The cart device 1 can run by rolling in a state in which the casters 3a3 of the leg portions 3a are in contact with the floor surface. Moreover, the movement of the cart apparatus 1 is controlled by locking the caster 3a3 by the lock portion 3a4.

FIG. 4 is a front view including the support base 3 b and the pocket tray support mechanism 11. 5 is a cross-sectional view taken along the line AA in FIG. 4 and 5, only one pocket tray support mechanism 11 is shown.
As shown in FIGS. 4 and 5, the support base 3 b includes an outer column unit 3 b 1 and an inner column unit 3 b 2. The outer column unit 3b1 includes an outer 3b3 which is a hollow columnar portion standing on a base portion 3a2 (see FIG. 1 and the same applies below) of a leg 3a (see FIG. 1 and the same applies below), and an outer 3b3. A shelf column 3b4 to be fixed is provided. In the outer 3b3, two groove portions 3b5 are formed on each of the front side and the rear side of the cart device 1. These two groove portions 3b5 are formed so as to extend in the vertical direction while being parallel to each other. The shelf column 3b4 is fitted in each of the groove portions 3b5 of the outer 3b3. In other words, in the present embodiment, a total of four shelf columns 3b4 are provided, two on each of the front side and the rear side of the cart device 1. Each shelf column 3b4 is formed with locking holes 3b6 at a constant pitch in the vertical direction. These locking holes 3b6 are places into which locking claws 11c10 and 4g3 (described later) provided in tray support mechanisms 11 and 4 (described later) are inserted, respectively.

  The inner column unit 3b2 is inserted into the outer column 3b3 of the outer column unit 3b1, and has a hollow columnar part 3b7 with the top plate unit 5 fixed to the upper end, and is supported on the side of the columnar part 3b7 and is outside. And a roller 3b8 that contacts the inner wall surface of the outer 3b3 of the column unit 3b1. Such an inner column unit 3b2 is movable in the vertical direction inside the outer 3b3 of the outer column unit 3b1 by rolling the roller 3b8. When the inner column unit 3b2 is greatly protruded upward from the outer column unit 3b1, the support base 3b is extended as a whole, and the top panel unit 5 (see FIG. 1, the same applies hereinafter) is at a high position. Be placed. On the other hand, when most of the inner column units 3b2 are accommodated in the outer column unit 3b1, the support base 3b is contracted as a whole, and the top unit 5 is disposed at a low position.

  As shown in FIG. 1, the elevating operation unit (not shown; the same applies hereinafter) includes an operation lever (not shown) and a lock mechanism (not shown). The operation lever is disposed below the handle 5e, and unlocks the inner support unit 3b2 by the lock mechanism by operating. The lock mechanism fixes the inner column unit 3b2 to the outer column unit 3b1, and releases the lock only when the operation lever is operated. By such an elevating operation unit, the top board unit 5 can be arranged at an arbitrary height.

(Pocket tray)
FIG. 6 is a perspective view of the pocket tray 10.
As shown in FIG. 6, the pocket tray 10 includes a bottom plate 10a, a peripheral wall portion 10b erected on the edge of the bottom plate 10a, a downward claw (engagement portion) 10j formed at the front portion of the peripheral wall portion 10b, and And an engagement piece (a retaining portion) 10k.

  The bottom plate 10a is an article placement surface having a flat upper surface, and is a plate-like part that supports the placed article from below. In the present embodiment, the bottom plate 10a has a substantially square shape.

  The peripheral wall portion 10b is a wall portion erected on the edge portion of the bottom plate 10a so as to surround the bottom plate 10a, a front wall 10d erected from the front side of the cart device 1 in the bottom plate 10a, and a cart device in the bottom plate 10a. A rear wall 10e erected from one rear side, a first side wall 10f erected from one side of the bottom plate 10a in the width direction of the cart device 1, and the other in the width direction of the cart device 1 on the bottom plate 10a. And a second side wall 10g erected from the side on the side.

  At the upper end of the front wall 10d, the first side wall 10f, the rear wall 10e, and the second side wall 10g, a folded wall portion 10h folded outward is provided continuously.

  The downward claws 10j are provided at four positions on the front wall 10d of the peripheral wall portion 10b so as to be separated in the width direction and the vertical direction. Each downward claw 10j includes a first flat surface portion 10j1 protruding along the horizontal plane from the front wall 10d, and a curved portion 10j2 formed to bend downward gradually toward the front from the end of the first flat surface portion 10j1. And a second flat surface portion 10j3 extending along the vertical plane from the end of the curved portion 10j2. Thus, the downward nail 10j has a downward hook shape. The downward claws 10j are formed to be elastically deformable. For example, the interposition member 11b is formed of a synthetic resin such as PP (polypropylene).

  The engaging piece 10k is disposed between the two downward claws 10j disposed on the lower side of the downward claws 10j spaced apart from each other on the front wall 10d of the peripheral wall portion 10b. The engagement piece 10k protrudes forward from the front wall 10d and is formed horizontally long.

  Further, as shown in FIG. 5, the dimension of the pocket tray 10 in the front-rear direction in the cart device 1 is longer than the dimension of the support base 3b in the front-rear direction.

(Pocket tray support mechanism)
As shown in FIG. 1, in this embodiment, two pocket tray support mechanisms 11 are provided for the cart body 3. These pocket tray support mechanisms 11 are arranged on both sides in the width direction of the cart apparatus 1 with the support base 3b interposed therebetween. Each pocket tray support mechanism 11 is detachably attached to the support base 3 b and supports the pocket tray 10. Since these pocket tray support mechanisms 11 have the same configuration except that they are arranged in different directions, only one of them will be described in the following description.

FIG. 7 is a perspective view including the support base 3b and the pocket tray support mechanism 11 (the pocket tray 10 is indicated by a two-dot chain line). FIG. 8 is a perspective view including the support base 3 b, the pocket tray 10, and the pocket tray support mechanism 11.
As shown in FIGS. 7 and 8, the pocket tray support mechanism 11 includes a bracket member 11a and an interposition member (fitting member) 11b.

  The bracket member 11a has a hanger part 11c, a cover part 11d, and a lock part 11e.

9A and 9B are three views of the hanger portion 11c, where FIG. 9A is a top view, FIG. 9B is a side view, and FIG. 9C is a front view. FIG. 10 is a partial perspective view of the bracket member 11a.
As shown in FIGS. 9 and 10, the hanger portion 11 c includes two straight wire portions (lateral rails) 11 c 1, a first connection wire portion 11 c 2, a bending wire portion 11 c 3, a second connection wire portion 11 c 4, It has a main plate-like portion 11c6, an end plate-like portion 11c7, a first bent plate-like portion 11c8, a second bent plate-like portion 11c9, and a locking claw 11c10.

  As shown in FIGS. 8, 9, and 10, each straight wire portion 11c1 is engaged with the downward claws 10j of the pocket tray 10 with an intervening member 11b described later interposed therebetween. The two straight wire portions 11c1 are spaced apart from each other in the vertical direction corresponding to the vertical interval between the downward claws 10j. The first connecting wire portion 11c2 connects the ends of one of the two straight wire portions 11c1 (the width direction outer side of the cart device 1). The bent wire portion 11c3 is bent along the side surface of the support base 3b from the other end (the inner side in the width direction of the cart device 1) of each straight wire portion 11c1. The second connecting wire portion 11c4 connects the rear ends of the two bent wire portions 11c3. In this embodiment, these straight wire part 11c1, the 1st connection wire part 11c2, the bending wire part 11c3, and the 2nd connection wire part 11c4 are integrally formed by the wire steel rod.

  The main plate portion 11c6 is provided along the surface of the two bent wire portions 11c3 on the support base 3b side. The end plate-like portion 11c7 is bent from the upper and lower ends of the main plate-like portion 11c6. Each end plate-like portion 11c7 is disposed along the upper and lower surfaces of the two bent wire portions 11c3. The first bent plate-like portion 11c8 is bent from the rear end portion of the main plate-like portion 11c6 and is gradually inclined toward the center in the width direction of the cart device 1 as it goes rearward. The second bent plate-like portion 11c9 is provided to be bent forward from the rear end portion of the first bent plate-like portion 11c8. The second bent plate-like portion 11c9 is disposed in the groove 3b5 of the support base 3b. The latching claws 11c10 are provided at two positions at the end of the second bent plate-like portion 11c9 so as to be separated in the vertical direction. Moreover, the contact wall part 11c20 which protrudes toward the latching claw 11c10 is provided in the edge part of the 2nd bending plate-shaped part 11c9. The contact wall portion 11c20 is provided at the upper and lower ends of the second bent plate-like portion 11c9 and at three locations between the upper locking claw 11c10 and the lower locking claw 11c10.

  As shown in FIG. 9, each latching claw 11c10 is formed to be wider than the base 11c11 provided at the end of the second bent plate-like portion 11c9 and the vertical width of the base 11c11 continuously to the base 11c11. A wide portion 11c12 and an engaging claw portion 11c13 extending from the upper and lower ends of the wide portion 11c12 toward the end of the second bent plate-like portion 11c9 are provided.

  In the present embodiment, the main plate-like portion 11c6, the end plate-like portion 11c7, the first bent plate-like portion 11c8, the second bent plate-like portion 11c9, and the locking claw 11c10 are integrally formed of sheet metal or the like. . The bent wire portion 11c3 is connected to the upper and lower ends of the main plate portion 11c6 and the end plate portion 11c7 by welding or the like. The hanger part 11c is symmetrical with respect to the center in the vertical direction.

  As shown in FIGS. 5, 7, and 10, the cover portion 11 d includes a fixed wall portion 11 d 1, an end wall portion 11 d 2, an extending wall portion 11 d 3, and an upper and lower wall portion 11 d 4.

  The fixed wall portion 11d1 is disposed along the first bent plate-like portion 11c8 of the hanger portion 11c. A screw 11cx inserted through an attachment hole (not shown) formed in the first bent plate portion 11c8 is screwed into the fixed wall portion 11d1, so that the fixed wall portion 11d1 is engaged with the first bent plate portion 11c8. It is fixed. The end wall portion 11d2 is bent from the inner end in the width direction of the cart device 1 in the fixed wall portion 11d1, and is a corner portion between the first bent plate-like portion 11c8 and the second bent plate-like portion 11c9 of the hanger portion 11c. It is arranged to cover. The extending wall portion 11d3 is formed so as to extend forward from the upper and lower end portions at the end portion on the outer side in the width direction of the cart device 1 of the fixed wall portion 11d1. The extending wall portion 11d3 is disposed on the outer side in the width direction in the cart device 1 of the bending wire portion 11c3 of the hanger portion 11c. The upper and lower wall parts 11d4 are formed so as to cover the upper side and the lower side of the hanger part 11c from the respective extended wall parts 11d3. The cover portion 11d is symmetric with respect to the center in the vertical direction.

  The lock portion 11e includes a shaft locking portion 11e1, an extending wall portion 11e2, a pressing protrusion 11e3, a bent wall portion 11e4, a knob portion 11e5, and a locking claw portion 11e6.

  The shaft locking portion 11e1 is formed in an arc shape so as to be locked to the outer peripheral surface of the second connecting wire portion 11c4 of the hanger portion 11c. The shaft locking portion 11e1 is disposed between the upper extending wall portion 11d3 and the lower extending wall portion 11d3 of the cover portion 11d. The extending wall portion 11e2 extends forward from the end portion of the shaft locking portion 11e1, and is disposed between the upper bending wire portion 11c3 and the lower bending wire portion 11c3 of the hanger portion 11c. The pressing protrusion 11e3 protrudes from the inner surface in the width direction in the cart device 1 of the extending wall portion 11e2 toward the main plate-like portion 11c6 of the hanger portion 11c. The tip end portion of the pressing protrusion 11e3 is in contact with the main plate portion 11c6. The bent wall portion 11e4 is inclined so as to gradually move forward from the end portion of the extending wall portion 11e2 toward the inner side in the width direction of the cart device 1. The knob portion 11e5 is formed to protrude forward at the front end portion of the bent wall portion 11e4. The locking claw portion 11e6 is formed to be recessed forward at the rear end portion of the bent wall portion 11e4. The locking claw portion 11e6 is locked to a protrusion 3b9 on one side (outside in the width direction of the cart device 1) sandwiching the groove 3b5 in the outer 3b3 of the support base 3b. The lock part 11e is symmetrical with respect to the center in the vertical direction.

11 is a cross-sectional view taken along the line BB in FIG. 12 is a cross-sectional view taken along the line CC of FIG. FIG. 13 is a perspective view of the interposition member 11b.
As shown in FIGS. 11, 12, and 13, the interposition member 11 b includes a wire fitting part (fitting part) 11 b 1, an upper and lower connecting part (connecting part) 11 b 2, a central wall part (connecting part) 11 b 3, and a left and right connecting part. Part (connecting part) 11b4, retaining piece (protruding part) 11b8, support wall part 11b5, and lever piece (lever part) 11b6. The interposition member 11b is formed to be elastically deformable. For example, the interposition member 11b is formed of a synthetic resin such as PP (polypropylene).

  The wire fitting portions 11b1 are arranged at four locations apart from each other in the width direction and the vertical direction of the cart device 1. The wire fitting part 11b1 arranged on the upper side opens toward the rear upper part. The wire fitting portion 11b1 disposed on the lower side opens toward the rear lower portion. The upper wire fitting portion 11b1 is engaged with the upper straight wire portion 11c1 of the bracket member 11a while being elastically deformed. The lower wire fitting portion 11b1 is engaged with the lower straight wire portion 11c1 of the bracket member 11a while being elastically deformed.

  The upper and lower connecting portions 11b2 connect the upper wire fitting portion 11b1 and the lower wire fitting portion 11b1. The upper and lower connecting portions 11b2 are formed in a plate shape and are disposed along a vertical plane. The upper and lower connecting portions 11b2 are provided at two positions apart in the width direction of the cart device 1 so as to connect the width direction one side of the cart device 1 and connect the other side in the width direction.

  The central wall portion 11b3 is disposed between the pair of upper and lower connecting portions 11b2. The central wall portion 11b3 is formed in a plate shape and is disposed along the vertical plane.

  The left and right connecting portions 11b4 connect the central wall portion 11b3 and the upper and lower connecting portions 11b2 on both sides in the width direction of the cart device 1 respectively. The left and right connecting portions 11b4 are formed in a plate shape and are arranged along a vertical plane. The left and right connecting portions 11b4 are provided so as to be positioned at the center in the vertical direction of the central wall portion 11b3. That is, the left and right connecting portions 11b4 and the central wall portion 11b3 are not connected on the upper and lower sides.

  The retaining piece 11b8 projects from the central wall portion 11b3 toward the front wall 10d side of the pocket tray 10. The retaining pieces 11b8 are provided on the upper and lower portions of the central wall portion 11b3, respectively. The retaining piece 11b8 has an engaging surface 11b9 formed along a horizontal plane.

  The support wall portion 11b5 is provided at each of the upper end portion and the lower end portion of the central wall portion 11b3. The upper support wall portion 11b5 is curved from the lower surface of the upper straight wire portion 11c1 along the front surface. The lower support wall portion 11b5 is curved from the upper surface of the lower straight wire portion 11c1 along the front surface.

  The lever piece 11b6 is continuously provided on each support wall portion 11b5. The upper lever piece 11b6 is formed to extend upward from the support wall portion 11b5. The lower lever piece 11b6 is formed to extend downward from the support wall portion 11b5. The intervening member 11b has a symmetrical shape with respect to the center in the vertical direction, and is formed symmetrically with respect to the center in the width direction.

As described above, the pocket tray support mechanism 11 including the bracket member 11a and the interposition member 11b is symmetrical with respect to the center in the vertical direction. Thereby, the pocket tray support mechanism 11 can be provided on both sides in the width direction of the cart device 1 by turning it upside down.
In the present embodiment, the interposition member 11b and the downward claws (engagement portions) 10j of the pocket tray 10 constitute an option mounting structure 100 (see FIG. 8).

Next, an operation when the pocket tray support mechanism 11 and the pocket tray 10 are mounted on the support base 3b in the cart apparatus 1 of the present embodiment configured as described above will be described.
14 is a cross-sectional view taken along the line DD of FIG. FIG. 15 is a perspective view for explaining an operation of attaching the support bracket of the pocket tray 10 included in the cart device according to the embodiment of the present invention to the support body of the cart device.

  First, as shown in FIG. 11, the wire fitting portion 11b1 of the interposed member 11b is fitted into the straight wire portion 11c1 of the bracket member 11a.

  In this state, as shown in FIGS. 5 and 14, the locking claw 11 c 10 of the hanger portion 11 c is locked in the locking hole 3 b 6 of the shelf column 3 b 4 of the cart body 3. The locking claw 11c10 has the same vertical arrangement pitch as the arrangement pitch of the locking holes 3b6 of the shelf columns 3b4 of the cart body 3. The length from the upper end of the upper engaging claw portion 11c13 of the locking claw 11c10 to the lower end of the lower engaging claw portion 11c13 is slightly smaller than the vertical length of the locking hole 3b6. As a result, the locking claw 11c10 passes through the locking hole 3b6, and the locking claw 11c10 inserted into the locking hole 3b6 is moved downward, whereby the base 11c11 of the locking claw 11c10 is moved to the shelf column 3b4. It is arrange | positioned at the lower part of this locking hole 3b6, is locked by the shelf pillar 3b4, and a downward movement is controlled. Further, the engaging claw portion 11c13 of the locking claw 11c10 is locked to the front surface of the shelf column 3b4, and the backward movement is restricted. Further, the abutting wall portion 11c20 is locked to the rear surface of the shelf column 3b4, and the forward movement is restricted. In this state, the hanger portion 11c is arranged such that the straight wire portion 11c1 extends to the side of the support base 3b.

  Further, as shown in FIG. 15, in the bracket member 11a, the locking claw portion 11e6 of the lock portion 11e is locked to the protrusion 3b9 (see FIG. 5, the same applies hereinafter) of the support base 3b. As a result, in the lock portion 11e, the locking claw portion 11e6 is locked to the protrusion 3b9 of the support base 3b while the shaft locking portion 11e1 is engaged with the second connection wire portion 11c4 of the hanger portion 11c. Thus, the lock part 11e is attached to the hanger part 11c and the support base 3b. In this state, the tip end portion of the pressing protrusion 11e3 of the lock portion 11e is in contact with the main plate portion 11c6 of the hanger portion 11c. Thereby, since the hanger part 11c is pressed by the support base | substrate 3b side, rotation to the direction which makes the hanger part 11c turn the 1st connection wire part 11c2 side back centering on the latching claw 11c10 is controlled.

  And as shown in FIG.11 and FIG.12, the downward nail | claw 10j of the pocket tray 10 is engaged with the wire fitting part 11b1 with respect to the wire fitting part 11b1 of the interposition member 11b which fits the straight wire part 11c1. Thus, the pocket tray 10 is moved downward. At this time, the engaging piece 10k of the pocket tray 10 gets over the retaining piece 11b8 below the interposed member 11b. The straight wire portion 11c1 fitted with the interposition member 11b is disposed inside the downward claw 10j of the pocket tray 10, and the downward claw 10j engages with the outer periphery of the fitting portion 11b1 of the interposition member 11b from above. In this state, the second flat surface portion 10j3 of the downward claw 10j comes into contact with the front surface of the wire fitting portion 11b1, and the rearward movement of the pocket tray 10 is restricted. Further, the upper retaining piece 11b8 abuts against the front wall 10d of the pocket tray 10 and the forward movement of the pocket tray 10 is restricted. Further, the engagement piece 10k of the pocket tray 10 comes into contact with the engagement surface 11b9 of the interposition member 11b, and the upward movement of the pocket tray 10 is restricted. In this way, the mounting of the pocket tray 10 on the side of the support base 3b is completed.

  In this state, as shown in FIG. 5, the straight wire portion 11c1 of the hanger portion 11c is disposed on substantially the same plane as the front surface of the support base 3b. The pocket tray 10 is disposed on the rear side of the straight wire portion 11c1 of the hanger portion 11c. Further, the dimension of the pocket tray 10 in the front-rear direction in the cart device 1 is longer than the dimension in the front-rear direction of the support base 3b. Therefore, the pocket tray 10 protrudes rearward from the support base 3b.

  Here, an example in which the bracket member 11a is mounted in the locking hole 3b6 on the rear side of the support base 3b has been described. However, in the cart apparatus 1 of the present embodiment, the bracket member 11a can be mounted in the locking hole 3b6 on the front side of the support base 3b.

Next, the operation when the pocket tray support mechanism 11 and the pocket tray 10 are detached from the support base 3b will be described.
When the lower lever piece 11b6 on the lower side of the intervening member 11b is pulled rearward, the left and right connecting portions 11b4 and the central wall portion 11b3 are not connected on the upper and lower sides. As a side, the tip side is elastically deformed so as to move backward, and the engagement between the retaining piece 11b8 and the engagement piece 10k is released. Thereby, the pocket tray 10 can be moved upward and the pocket tray 10 comes off. And the latching claw part 11e6 of the lock part 11e is removed from the protrusion part 3b9 of the support base 3b. Further, the hanger part 11c is moved slightly upward and moved backward. As a result, the wide portion 11c12 of the locking claw 11c10 of the hanger portion 11c passes through the locking hole 3b6 of the support base 3b, and the pocket tray support mechanism 11 and the pocket tray 10 are detached from the support base 3b.

  Further, in the detached pocket tray support mechanism 11 and pocket tray 10, the locking claw 11 c 10 is locked in the locking hole 3 b 6 formed at a height position different from the original position, so that the position in the vertical direction can be appropriately adjusted. Thus, the pocket tray 10 can be mounted on the support base 3b side.

(Main tray)
FIG. 16 is a perspective view of the main tray 2, (a) is a perspective view seen from above, and (b) is a perspective view seen from below. FIG. 17 is a three-side view of the main tray 2, where (a) is a bottom view, (b) is a side view, and (c) is a front view. As shown in these drawings, the main tray 2 includes a bottom plate 2a, a peripheral wall portion 2b erected on the edge of the bottom plate 2a, and a protrusion 2c formed on the lower surface of the bottom plate 2a. In the following description, for convenience of description, the side shown in FIG. 17C is referred to as the front side, and the side opposite to the front side is referred to as the back side.

  The bottom plate 2a is an article placement surface having a flat upper surface, and is a plate-like portion that supports the placed article from below. In the present embodiment, as shown in FIGS. 16 and 17, the bottom plate 2a has a substantially rectangular shape with a short depth direction and a long width direction.

  The peripheral wall portion 2b is a wall portion erected on the edge of the bottom plate 2a so as to surround the bottom plate 2a. The front wall 2d erected from the long side on the front side of the bottom plate 2a, and the length on the back side of the bottom plate 2a. A rear wall 2e standing from the side, a first side wall 2f standing from the left side of the bottom plate 2a (one side in the width direction), and a right side (side on the other side in the width direction) of the bottom plate 2a And a second side wall 2g.

  The front wall 2d is set to have a lower vertical dimension than the back wall 2e. That is, the rear wall 2e is set to have a higher vertical dimension than the front wall 2d. As a result, the upper end of the front wall 2d is positioned lower than the upper end of the back wall 2e. The first side wall 2f is connected to the left end of the front wall 2d and the left end of the back wall 2e. The second side wall 2g is connected to the right end of the front wall 2d and the right end of the back wall 2e.

  The first side wall 2f has a front side portion 2f1, a back side portion 2f2, and an intermediate portion 2f3. The front side portion 2f1 is a part that is connected to the front wall 2d and has the same height as the front wall 2d. The back side portion 2f2 is a part that is connected to the back wall 2e and has the same height as the back wall 2e. The intermediate portion 2f3 is disposed between the front side portion 2f1 and the back side portion 2f2, and has an upper end inclined so as to connect the upper end of the front side portion 2f1 and the upper end of the back side portion 2f2 in a straight line. It is.

  The second side wall 2g has a front side part 2g1, a back side part 2g2, and an intermediate part 2g3. The front side portion 2g1 is a portion that is connected to the front wall 2d and has the same height as the front wall 2d. The back side part 2g2 is a part that is connected to the back wall 2e and has the same height as the back wall 2e. The intermediate part 2g3 is disposed between the front side part 2g1 and the back side part 2g2, and the upper end is inclined so as to linearly connect the upper end of the front side part 2g1 and the upper end of the back side part 2g2. It is. In addition, as shown to Fig.16 (a), the intermediate part 2f3 of the 1st side wall 2f and the intermediate part 2g3 of the 2nd side wall 2g are provided in the same location in the depth direction.

In the main tray 2 having the peripheral wall 2b, as shown in FIG. 16A, the height of the peripheral wall 2b is low on the front side, and the height of the peripheral wall 2b is high on the back side. In addition, an area surrounded by the peripheral wall 2b is an article storage area. For this reason, the front side of the storage area of the main tray 2 (hereinafter referred to as the front-side storage area Ra) has a low peripheral wall portion 2b, so that the article can be easily taken in and out and is easily visible. For example, it is an area suitable for accommodating small articles. On the other hand, the back side of the storage area of the main tray 2 (hereinafter referred to as the back side storage area Rb) has a high peripheral wall 2b, so that even if a tall article is tilted by running vibration of the cart device 1 or the like, the peripheral wall The region can be supported by the portion 2b, and is an area suitable for stably storing, for example, a tall article.
Moreover, the dimension of the width direction in the cart apparatus 1 of the main tray 2 is longer than the dimension of the width direction of the support base 3b.

  The protrusion 2c is a portion protruding downward from the lower surface of the bottom plate 2a. In the present embodiment, a plurality are formed as shown in FIG. For convenience of explanation, these protrusions 2 c are grouped into a left protrusion group 2 cA disposed on the left side of the main tray 2 and a right protrusion group 2 cB disposed on the right side of the main tray 2.

  The left projection group 2cA includes a front projection 2c1, a rear projection 2c2, a front central projection 2c3, and a rear central projection 2c4 as projections 2c. These front side projection 2c1, back side projection 2c2, front side center projection 2c3 and back side center projection 2c4 are arranged in a substantially straight line in the depth direction, as shown in FIG. .

  The front projection 2c1 has a hanging portion 2c11 that hangs downward from the lower surface of the main tray 2, and an extending portion 2c12 that protrudes from the lower end of the hanging portion 2c11 toward the right side of the main tray 2. The extending portion 2c12 is a substantially rectangular plate portion that is horizontally disposed so that the long side is along the depth direction of the main tray 2, and the right side is connected to the lower end of the hanging portion 2c11. It is arranged with a certain gap from the lower surface. As shown in FIG. 17A, the front side protruding portion 2c1 is disposed on the most front side of the main tray 2 in the left side protruding group 2cA.

  The rear-side projection 2c2 has the same shape as the front-side projection 2c1, and a drooping portion 2c21 that hangs downward from the lower surface of the main tray 2, and a lower end of the drooping portion 2c21 toward the right side of the main tray 2. It has the extended part 2c22 which protruded. The extending portion 2c22 is a substantially rectangular plate portion whose long side is horizontally arranged along the depth direction of the main tray 2, and the right side is connected to the lower end of the drooping portion 2c21. It is arranged with a certain gap from the lower surface. The separation distance from the extension portion 2c22 to the lower surface of the main tray 2 is set to be the same as the separation distance from the extension portion 2c12 of the front projection 2c1 to the lower surface of the main tray 2. As shown in FIG. 17A, the rear side protrusion 2c2 is disposed on the rear side of the main tray 2 most in the left protrusion group 2cA.

  The front side central projection 2c3 and the back side central projection 2c4 are arranged between the front side projection 2c1 and the back side projection 2c2. Of the front side central projection 2c3 and the back side central projection 2c4, the front side central projection 2c3 is disposed on the front side of the main tray 2, and the back side central projection 2c4 is disposed on the back side of the main tray 2. Yes. Between these front side central projection part 2c3 and back side central projection part 2c4, insertion clearance S1 in which the below-mentioned engagement projection 4f with which the main tray support mechanism 4 is provided is inserted is formed.

  The front-side central projection 2c3 is disposed so as to be slightly displaced toward the widthwise central portion of the main tray 2 with respect to the front-side projection 2c1 and the back-side projection 2c2. The front side central projection 2c3 has a slope 2c31 that is inclined with respect to the depth direction toward the front side of the main tray 2. The inclined surface 2c31 is a surface that extends from the front side of the main tray 2 toward the insertion gap S1 toward the center in the width direction of the main tray 2, and attaches and detaches the main tray 2 with the front side facing the cart body 3 side. Sometimes the engaging projection 4f is guided. Similar to the front side central projection 2c3, the rear side central projection 2c4 is arranged slightly displaced toward the central portion in the width direction of the main tray 2 with respect to the front side projection 2c1 and the rear side projection 2c2. Yes. The back side central projection 2c4 has a slope 2c41 that is inclined with respect to the depth direction toward the back side of the main tray 2. The inclined surface 2c41 is a surface that extends from the back side of the main tray 2 toward the insertion gap S1 toward the center in the width direction of the main tray 2, and attaches and detaches the main tray 2 with the back side facing the cart body 3 side. Sometimes the engaging projection 4f is guided. The front side central projection 2c3 and the back side central projection 2c4 are symmetrical with respect to the center of the main tray 2 in the depth direction.

  The right protrusion group 2cB includes a front side protrusion 2c5, a back side protrusion 2c6, a front side center protrusion 2c7, and a back side center protrusion 2c8 as the protrusions 2c. The front-side protrusion 2c5, the back-side protrusion 2c6, the front-side center protrusion 2c7, and the back-side center protrusion 2c8 included in the right-side protrusion group 2cB are symmetrical to the left-side protrusion group 2cA.

  That is, the front-side protrusion 2c5 has a symmetrical shape with the front-side protrusion 2c1 of the left protrusion group 2cA, and includes a hanging portion 2c51 and an extending portion 2c52. Further, the back side protrusion 2c6 is symmetrical to the back side protrusion 2c2 of the left protrusion group 2cA, and includes a hanging part 2c61 and an extending part 2c62. Further, the front side central projection 2c7 is symmetrical with the front side central projection 2c3 of the left projection group 2cA, and has an inclined surface 2c71. Further, the back side central projection 2c8 has a symmetrical shape with the back side central projection 2c4 of the left projection group 2cA and has an inclined surface 2c81. Further, an insertion gap S2 into which an engagement protrusion 4f described later included in the main tray support mechanism 4 is inserted is formed between the front side central protrusion 2c7 and the back side central protrusion 2c8.

(Main tray support mechanism)
FIG. 18 is a perspective view including the cart body 3 and the main tray support mechanism 4 (a perspective view in which the main tray 2 is omitted).
As shown in FIG. 18, in the present embodiment, two main tray support mechanisms 4 are provided for the cart body 3. These main tray support mechanisms 4 are spaced apart in the vertical direction, and each support the main tray 2 in a detachable manner. Since these main tray support mechanisms 4 have the same configuration except that they are arranged at different heights, only one of them will be described in the following description.

  FIG. 19 is a perspective view of the main tray support mechanism 4 as viewed from above with the main tray 2 removed. FIG. 20 is a perspective view of the main tray support mechanism 4 as viewed from below with the main tray 2 removed. FIG. 21 is a bottom view of the main tray support mechanism 4 as viewed from below with the main tray 2 attached. FIG. 22 is an enlarged side view of a part of the main tray support mechanism 4 on the cart body 3 side with the main tray 2 removed. As shown in these drawings, the main tray support mechanism 4 includes a support unit 4a and a lock unit 4b.

  The support unit 4a includes a base portion 4c, a contact portion 4d, a tray detachment operation portion 4e, an engagement protrusion 4f, and a bracket portion 4g. The base portion 4c is a plate-like portion that directly or indirectly supports the contact portion 4d, the tray detachment operation portion 4e, and the engagement protrusion 4f. As shown in FIG. 21, the base portion 4 c has a substantially rectangular shape with a smaller area than the lower surface of the main tray 2. Covers the bottom surface. That is, in the present embodiment, the regions on both sides of the base portion 4c on the lower surface of the main tray 2 are exposed. The exposed area of the lower surface of the main tray 2 is used as an area that is gripped by the operator when the main tray 2 is detached from the main tray support mechanism 4 (hereinafter referred to as a holding area Ha). Thus, in the present embodiment, even when the main tray 2 is mounted on the main tray support mechanism 4, a part of the lower surface of the main tray 2 is exposed as the gripping area Ha. These gripping areas Ha are formed adjacent to the tray detachment operation unit 4e, and are easily flown by the operator who operates the tray detachment operation unit 4e operating the tray detachment operation unit 4e. It is arranged at a position where it can be gripped.

  Further, the front edge 4c1, the left edge 4c2, and the right edge 4c3 of the base 4c are bent upward as shown in FIG. Further, the rear edge 4c4 of the base 4c is bent downward. The front edge portion 4c1, the left edge portion 4c2, and the right edge portion 4c3 of the base portion 4c support the contact portion 4d that is integrally connected. Furthermore, an opening 4c5 through which an operation plate 4e1 (described later) of the tray detachment operation unit 4e is inserted is formed at the center in the front-rear direction at the left edge 4c2 and the right edge 4c3. Further, the rear edge 4c4 of the base portion 4c is a contact surface of a coil spring 4b2 described later of the lock unit 4b.

  The contact portion 4d is provided integrally with the front edge portion 4c1, the left edge portion 4c2, and the right edge portion 4c3 of the base portion 4c. In the present embodiment, as the contact part 4d, the front center contact part 4d1, the left front contact part 4d2, the left rear contact part 4d3, the right front contact part 4d4, and the right rear contact part 4d5 is provided.

  The front center contact portion 4d1 extends rearward from the upper end of the front edge portion 4c1 of the base portion 4c, and the upper surface is a contact surface that contacts the lower surface of the main tray 2. The left front contact portion 4d2 is provided at the front end portion of the left edge portion 4c2 of the base portion 4c, and extends from the upper end of the edge portion 4c2 toward the right side. The left front contact portion 4d2 has an upper surface that is a contact surface that contacts the lower surface of the main tray 2, and is arranged so that the upper surface is flush with the upper surface of the front center contact portion 4d1. The left rear contact portion 4d3 is provided at the rear end portion of the left edge portion 4c2 of the base portion 4c, and extends from the upper end of the edge portion 4c2 toward the right side. The left rear contact portion 4d3 also has an upper surface that is a contact surface that contacts the lower surface of the main tray 2, and is disposed so that the upper surface is flush with the upper surface of the front center contact portion 4d1. . The right front contact portion 4d4 is provided at the front end of the right edge 4c3 of the base portion 4c, and extends from the upper end of the edge 4c3 toward the left side. The right front contact portion 4d4 also has an upper surface that is a contact surface that contacts the lower surface of the main tray 2, and is arranged so that the upper surface is flush with the upper surface of the front center contact portion 4d1. The right rear contact portion 4d5 is provided at the rear end portion of the right edge portion 4c3 of the base portion 4c, and extends from the upper end of the edge portion 4c3 toward the left side. The upper right surface of the right rear contact portion 4d5 is also a contact surface that contacts the lower surface of the main tray 2, and the upper surface is arranged to be flush with the upper surface of the front center contact portion 4d1. .

  These abutting portions 4 d have abutting surfaces of the same height that abut against the lower surface of the main tray 2. The main tray 2 is supported by being brought into contact with these contact surfaces. That is, the main tray 2 includes the upper surface of the front center contact portion 4d1, the upper surface of the left front contact portion 4d2, the upper surface of the left rear contact portion 4d3, the upper surface of the right front contact portion 4d4, and the right rear. It is supported from below by the upper surface of the side contact portion 4d5. Thereby, the downward movement of the main tray 2 is restricted.

  Further, the contact portion 4d is formed from the upper end of any one of the front edge portion 4c1, the left edge portion 4c2, and the right edge portion 4c3, which is bent upward as described above, from the base portion 4c. It is formed to extend inside. For this reason, these contact parts 4d are spaced apart from the upper surface of the base part 4c by a certain distance. That is, the contact portion 4d is disposed with a certain gap in the vertical direction between the upper surface of the base portion 4c.

  In a state where the main tray 2 is mounted on the support unit 4a, for example, the extension 2c12 of the front side protrusion 2c1 is inserted below the left front contact part 4d2, and the extension of the back side protrusion 2c2 2c22 is inserted below the left rear contact portion 4d3. Further, the extending portion 2c52 of the front side protruding portion 2c5 is inserted below the right front contact portion 4d4, and the extending portion 2c62 of the back side protruding portion 2c6 is inserted below the right rear contact portion 4d5. Therefore, when the main tray 2 mounted on the support unit 4a is moved upward, the extension 2c12 of the front projection 2c1 interferes with the left front contact 4d2, and the rear projection 2c2 The extension part 2c22 interferes with the left rear contact part 4d3, the extension part 2c52 of the front projection part 2c5 interferes with the right front contact part 4d4, and the extension part 2c62 of the rear projection part 2c6 extends to the right rear. Interfering with the side contact portion 4d5. Thereby, the upward movement of the main tray 2 is restricted.

  Furthermore, when the main tray 2 attached to the support unit 4a is moved in the left-right direction of the cart device 1, for example, the extending portion 2c12 of the front side protruding portion 2c1 and the extending portion 2c22 of the back side protruding portion 2c2 are used. Interferes with the left edge 4c2 of the base 4c. Further, the extending portion 2c52 of the front side protruding portion 2c5 and the extending portion 2c62 of the back side protruding portion 2c6 interfere with the right edge portion 4c3 of the base portion 4c. As a result, movement of the main tray 2 in the left-right direction of the cart device 1 is restricted.

  The tray detachment operation part 4e is provided on each of the left side and the right side of the base part 4c, and is disposed at the center part in the front-rear direction of the base part 4c. The tray detachment operation unit 4e includes an operation plate 4e1 and an urging unit 4e2. The operation plate 4e1 is a plate-like member that is arranged in an inserted state with the front and back surfaces thereof vertically oriented in the opening 4c5 formed in the base portion 4c, and has a gripping portion at an end portion facing the outside of the base portion 4c. 4e3 is provided. That is, the operation plate 4e1 of the tray detachment operation unit 4e disposed on the left side of the base unit 4c is provided with the gripping unit 4e3 at the end protruding to the left side from the opening 4c5. Further, the operation plate 4e1 of the tray detaching operation unit 4e disposed on the right side of the base unit 4c is provided with a gripping unit 4e3 at an end protruding to the right side from the opening 4c5.

  The urging unit 4e2 is fixed to the lower surface of the base portion 4c and accommodates a part of the lower portion of the operation plate 4e1. This urging unit 4e2 is provided with a spring (not shown) inside the cover, and urges the operation plate 4e1 toward the outside of the base portion 4c. Further, the urging unit 4e2 includes a stopper (not shown), and defines a movement limit position toward the outside of the base portion 4c of the operation plate 4e1.

  In such a tray detaching operation unit 4e, in the state where an external force other than the urging force from the urging unit 4e2 is not acting, a movement limit in which the operation plate 4e1 is regulated by a stopper (not shown) by the urging unit 4e2. Biased to position. Hereinafter, the movement limit position of the operation plate 4e1 is referred to as a reference position. The reference position of the operation plate 4e1 is such that the engagement protrusion 4f installed on the operation plate 4e1 is inserted into the insertion gap S1 (or insertion gap S2) of the main tray 2 in a state where the main tray 2 is mounted on the support unit 4a. It is set to the position where it is inserted into.

  The engagement protrusion 4f is formed on the operation plate 4e1. The operation plate 4e1 is a rod-like protrusion that is long in the front-rear direction, and the length in the front-rear direction is set slightly shorter than the insertion gap S1 of the main tray 2 and the length of the insertion gap S2 in the depth direction. When the operation plate 4e1 is at the reference position and the main tray 2 is mounted on the support unit 4a, the engagement protrusion 4f has an insertion gap S1 (or insertion gap) of the main tray 2 as shown in FIG. It is inserted in S2).

  For example, when the engagement protrusion 4f is inserted into the insertion gap S1 of the main tray 2, as shown in FIG. 21, the front side central protrusion part 2c3 and the back side central protrusion part of the main tray 2 are provided before and after the engagement protrusion 4f. 2c4 is arranged. As a result, when the main tray 2 is about to move in the front-rear direction of the cart device 1, the engagement protrusion 4 f interferes with the front-side center protrusion 2 c 3 or the back-side center protrusion 2 c 4, so that the front-rear direction of the main tray 2 Movement is restricted. When the engagement protrusion 4f is inserted into the insertion gap S2, as shown in FIG. 21, the front side central protrusion 2c7 and the back side central protrusion 2c8 of the main tray 2 are arranged before and after the engagement protrusion 4f. Will be. As a result, when the main tray 2 tries to move in the front-rear direction of the cart device 1, the engagement protrusion 4 f interferes with the front-side center protrusion 2 c 7 or the back-side center protrusion 2 c 8, and the main tray 2 moves in the front-rear direction. Movement is restricted. For this reason, the main tray 2 mounted on the support unit 4a cannot move in the front-rear direction of the cart device 1.

  As shown in FIG. 20 or FIG. 22, the bracket part 4g includes a base part 4g1 fixed to the support base 3b of the cart body 3 and two arms 4g2 extending forward from the base part 4g1. And have. The base portion 4g1 is a portion having a substantially U shape when viewed from the vertical direction, and has a locking claw 4g3 at the end portion of the approximately U shape as shown in FIG. In the present embodiment, three locking claws 4g3 are arranged in each of two substantially U-shaped end portions in the vertical direction. These locking claws 4g3 have a vertical arrangement pitch of the locking holes 3b6 (see FIG. 4; see FIG. 4) of the shelf column 3b4 (see FIG. 4, see below) of the cart body 3 (see FIG. 4, the same applies hereinafter). The same pitch), and can be inserted into the locking holes 3b6. Further, the locking claw 4g3 inserted into the locking hole 3b6 is locked to the shelf column 3b4 by moving downward. As a result, the bracket portion 4g (that is, the main tray support mechanism 4) is fixed to the cart body 3. Further, the bracket portion 4g fixed to the cart body 3 (that is, the main tray support mechanism 4) is lifted with respect to the cart body 3 so that the locking claw 4g3 is separated from the shelf column 3b4 and removed from the cart body 3. be able to.

  As described above, a plurality of locking holes 3b6 are formed in the shelf column 3b4 in the vertical direction. For this reason, the bracket portion 4g (that is, the main tray support mechanism 4) can fix the base portion 4g1 to an arbitrary position in the height direction of the support base 3b. That is, in this embodiment, the main tray support mechanism 4 can be attached to an arbitrary position of the shelf column 3b4 (attached portion) provided in a certain range of the support base 3b that is a part of the cart body 3.

  The base portion 4g1 has a slit between the uppermost locking claw 4g3 and the lowermost locking claw 4g3 among the three locking claws 4g3 arranged in the vertical direction. 4g5 is formed. The slit 4g5 is a region where a wedge portion 4b7 of a lock member 4b1 (described later) of the lock unit 4b is inserted so as to be movable in the front-rear direction of the cart device 1.

  As shown in FIG. 20, the arm 4g2 is spaced apart in the left-right direction of the cart device 1, and the base portion is fixed to the base portion 4g1. These arms 4g2 have a plate shape in which the thickness in the left-right direction of the cart device 1 is reduced, and the upper ends are fixed to the lower surface of the base portion 4c. Such an arm 4g2 supports the base portion 4g1 from below. Further, as shown in FIG. 20, a slit 4g4 extending in the front-rear direction is formed in the vicinity of the base of the arm 4g2. The slit 4g4 is inserted with a claw portion 4b6 of a lock member 4b1 described later of the lock unit 4b. The slit 4g4 is set longer than the width of the claw portion 4b6 in the front-rear direction of the cart device 1. Thus, the claw portion 4b6 can be moved in the front-rear direction of the cart device 1 in a state where the claw portion 4b6 is inserted into the slit 4g4.

  As shown in FIG. 22, the lock unit 4b includes a lock member 4b1 and a coil spring 4b2. FIG. 23 is a perspective view of the lock member 4 b 1, (a) is a perspective view seen from the front side of the cart apparatus 1, and (b) is a perspective view seen from the rear side of the cart apparatus 1.

  As shown in these drawings, the lock member 4b1 includes a base portion 4b3 in which a groove portion 4b31 for an operator to put his / her finger is formed, and an extending plate 4b4 extending from the base portion 4b3 to the front side of the cart device 1. And a hanging part 4b5 that hangs downward from the base part 4b3, a claw part 4b6 that projects outward from the lower end of the hanging part 4b5, and a wedge part 4b7 that projects backward from the base part 4b3.

  The base part 4b3 is formed long in the left-right direction, and is disposed between the arms 4g2 of the bracket part 4g (see FIG. 20). The base portion 4b3 is disposed so as to be movable in the front-rear direction between the base portion 4c of the support unit 4a and the base portion 4g1 of the bracket portion 4g. The groove 4b31 described above is formed along the extending direction of the base 4b3. The extension plate 4b4 is disposed above the upper surface of the base portion 4c of the support unit 4a in parallel with the upper surface. The extension plate 4b4 is moved along the upper surface of the base portion 4c of the support unit 4a when an operator puts a finger on the groove 4b31 and pulls the lock member 4b1.

  The hanging parts 4b5 are respectively installed at both ends in the left-right direction of the base part 4b3. The claw portion 4b6 is inserted into a slit 4g4 formed in the arm 4g2 of the bracket portion 4g. When the claw portions 4b6 formed on the two hanging portions 4b5 are inserted into the slits 4g4, the movement of the lock member 4b1 in the left-right direction and the up-down direction with respect to the bracket portion 4g is restricted. That is, the lock member 4b1 can be moved only in the front-rear direction within the range of the length in the front-rear direction of the slit 4g4 by inserting the claw portion 4b6 into the slit 4g4.

  The wedge portions 4b7 are respectively installed at both ends in the left-right direction of the base portion 4b3. These wedge portions 4b7 are arranged in slits 4g5 formed in the base portion 4g1 of the bracket portion 4g as shown in FIG. The wedge portion 4b7 is moved in the front-rear direction along the slit 4g5 when the lock member 4b1 is moved in the front-rear direction. Further, the length in the front-rear direction of the wedge portion 4b7 is arranged between the locking claws 4g3 of the bracket portion 4g when the distal end portion is viewed from the vertical direction when the lock member 4b1 is moved to the rearmost side. When the lock member 4b1 is moved to the foremost side, the distal end portion is set so as to be pulled out from between the locking claws 4g3 of the bracket portion 4g when viewed from the up-down direction. Further, the thickness of the wedge portion 4b7 in the vertical direction can be inserted into a gap formed above the locking claw 4g3 in a state where the locking claw 4g3 of the bracket portion 4g is locked to the shelf column 3b4. It is set so that the locking hole 3b6 can be filled together with the pawl 4g3. Such a wedge portion 4b7 can be inserted into a gap formed above the locking claw 4g3. When the locking hole 3b6 is filled together with the locking claw 4g3, the locking claw 4g3 cannot be moved upward. The support unit 4a (that is, the main tray support mechanism 4) cannot be detached from the cart body 3 (see FIG. 26A). That is, the main tray support mechanism 4 is locked with respect to the cart body 3 in a state of extending forward from the support base 3b.

  The coil spring 4b2 is wound around a protrusion formed on the lower surface of the extension plate 4b4, and the tip end is in contact with the rear edge 4c4 of the base portion 4c of the support unit 4a. As shown in FIG. 21, three coil springs 4b2 are arranged in the left-right direction. Such a coil spring 4b2 biases the lock member 4b1 to the rear side (that is, the support base 3b side of the cart body 3). For this reason, in a state in which an external force other than the urging force of the coil spring 4b2 is not acting on the lock member 4b1, the lock member 4b1 is urged to the rear side (that is, the cart body 3 and the support base 3b side). Therefore, when the operator does not move the lock member 4b1 to the front side, the wedge portion 4b7 described above can be inserted into the gap formed above the locking claw 4g3, and the main tray support mechanism 4 can be inserted into the cart body 3. Locked against.

  Subsequently, in the cart apparatus 1 of the present embodiment configured as described above, an operation when the main tray 2 is mounted on the main tray support mechanism 4 will be described with reference to FIGS. 24 and 25.

  First, as shown in FIG. 24A, the main tray 2 is disposed on the near side of the mounting position (fixed position) of the main tray support mechanism 4. At this time, the front side projection 2c1, the back side projection 2c2, the front side center projection 2c3, the back side center projection 2c4, the front side projection 2c5, the back side projection 2c6, and the front side center projection of the main tray 2 2c7 and the rear side central protrusion 2c8 are provided at the front center contact part 4d1, the left front contact part 4d2, the left rear contact part 4d3, the right front contact part 4d4 and the base part 4c of the support unit 4a. The main tray 2 is arranged so as not to interfere with the right rear contact portion 4d5.

  Subsequently, as shown in FIG. 24B, the main tray 2 is slid rearward. Then, as shown in FIGS. 25 (a) and 25 (b), the engagement projection 4f installed on the operation plate 4e1 has a rear side central projection 2c4 belonging to the left projection group 2cA (see FIG. 17 (a)). Alternatively, when contact is made with the rear central projection 2c8 belonging to the right projection group 2cB (see FIG. 17A), the engaging projection 4f is inclined 2c41 (see FIG. 17A) of the rear central projection 2c4 or the rear side. It is guided to the slope 2c81 (see FIG. 17A) of the central protrusion 2c8 and gradually moved to the center side of the main tray support mechanism 4.

  When the engagement protrusion 4f reaches the insertion gap S1 or the insertion gap S2, the engagement protrusion 4f is inserted into the insertion gap S1 or the insertion gap S2 by the urging force of the urging unit 4e2 of the tray detaching operation portion 4e (see FIG. 21). ). When the engagement protrusion 4f is thus inserted into the insertion gap S1 or the insertion gap S2, the front side protrusion 2c1 of the main tray 2 and the left front contact part 4d2 of the support unit 4a are connected to the rear side protrusion of the main tray 2. 2c2 and the left rear contact portion 4d3 of the support unit 4a are supported by the front projection 2c5 of the main tray 2 and the right front contact portion 4d4 of the support unit 4a are supported by the rear projection 2c6 of the main tray 2. It arrange | positions so that the right rear side contact part 4d5 of the unit 4a may overlap with a perpendicular direction. As described above, the main tray 2 is fixed to the main tray support mechanism 4 in the front, rear, left, and right directions, and the mounting of the support base 3b on the main tray 2 to the front is completed.

  Moreover, the dimension in the width direction of the main tray 2 is longer than the dimension in the width direction of the support base 3b. The main tray 2 is mounted on the support base 3b so that the center in the width direction of the main tray 2 and the center in the width direction of the support base 3b coincide. Therefore, the main tray 2 protrudes to the side of the support base 3b in a state where the main tray 2 is mounted on the support base 3b.

  Further, when the main tray 2 mounted in this way is detached from the main tray support mechanism 4, the operation plate 4e1 of the tray removal operation unit 4e is moved by pushing the gripping unit 4e3. As a result, the engagement protrusion 4f is retracted from the insertion gap S1 or the insertion gap S2, and the main tray 2 can be moved in the front-rear direction. In this state, the operator moves the main tray 2 to the position shown in FIG. 24A, and then grips and lifts the main tray 2 using the gripping area Ha shown in FIG. 2 is detached from the main tray support mechanism 4. Thus, in the present embodiment, when the main tray 2 is detached from the main tray support mechanism 4, the gripping area Ha is exposed, so that the main tray 2 can be easily lifted.

  Here, the example in which the back side of the main tray 2 is mounted on the main tray support mechanism 4 with the back side of the cart body 3 facing the support base 3b side has been described. That is, the example in which the main tray 2 disposed on the lower side of FIG. 1 is mounted has been described. However, in the cart apparatus 1 of this embodiment, like the main tray 2 arranged on the upper side in FIG. 1, the front side of the main tray 2 faces the support base 3 b side of the cart body 3 and the main tray support mechanism 4. It can also be installed.

  In such a case, when the main tray 2 is mounted, the engaging projection 4f installed on the operation plate 4e1 has the front central projection 2c3 or the right side belonging to the left projection group 2cA (see FIG. 17A). The projection 4f comes into contact with the front central projection 2c7 belonging to the projection group 2cB (see FIG. 17A), and the engaging projection 4f is a slope 2c31 (see FIG. 17A) of the front central projection 2c3 or the front central projection. It is guided to the slope 2c71 (see FIG. 17A) of the portion 2c7 and gradually moved to the center side of the main tray support mechanism 4.

  Here, an example in which the main tray 2 is mounted on the front side of the support base 3b has been described. However, in the cart apparatus 1 of this embodiment, the main tray 2 can be mounted on the rear side of the support base 3b by mounting the locking claws 4g3 in the locking holes 3b6 on the rear side of the support base 3b. . When mounting on the rear side of the support base 3b, the main tray 2 is disposed at a height that does not interfere with the rear portion of the pocket tray 10, and the locking claws 11c10 of the hanger portion 11c that supports the pocket tray 10 are locked. What is necessary is just to latch the latching claw 4g3 in the latching hole 3b6 which is not.

  Subsequently, an operation when the main tray support mechanism 4 is detached from the cart body 3 in the cart apparatus 1 of the present embodiment will be described with reference to FIGS. 26 and 27.

  As shown in FIG. 26 (a), when no external force other than the urging force of the coil spring 4b2 is acting on the lock member 4b1, the lock member 4b1 is located on the rear side (that is, on the support base 3b side of the cart body 3). The wedge portion 4b7 can be inserted into a gap formed above the locking claw 4g3. For this reason, the main tray support mechanism 4 is locked with respect to the cart body 3, and the main tray support mechanism 4 cannot be lifted.

  Therefore, first, as shown in FIG. 26B, the lock member 4b1 is pulled toward the front side. This operation is performed in a state where the operator puts a finger on the groove 4b31. As a result, the wedge portion 4b7 comes out of the locking hole 3b6, and the main tray support mechanism 4 can be lifted. Thereafter, the main tray support mechanism 4 is lifted as shown in FIG. 27 (a), and the main tray support mechanism 4 is pulled out so that the locking claws 4g3 come out of the locking holes 3b6 as shown in FIG. 27 (b). Thus, the main tray support mechanism 4 can be detached from the cart body 3.

  When the main tray support mechanism 4 is mounted on the cart body 3, no external force other than the urging force of the coil spring 4b2 acts on the lock member 4b1, so that the lock member 4b1 is urged most rearward. ing. For this reason, when the locking claw 4g3 is inserted into the locking hole 3b6, the wedge portion 4b7 interferes with the shelf column 3b4. However, since the reaction force received by the lock member 4b1 from the shelf column 3b4 exceeds the urging force of the coil spring 4b2 by further pushing the main tray support mechanism 4, the main tray support mechanism 4 can be moved without particularly operating the lock member 4b1. It can be attached to the cart body 3.

  Further, in the detached main tray support mechanism 4 and main tray 2, the locking claw 4g3 is locked in the locking hole 3b6 formed at a height different from the original position, so that the position in the vertical direction can be appropriately adjusted. Thus, the main tray 2 can be mounted on the support base 3b side.

(Top plate unit)
As shown in FIG. 1, the top plate unit 5 includes a top plate 5a, a side fixing member 5b, a front fixing member 5c, a fall prevention bar 5d, and a handle 5e.

  The top plate 5a is a substantially rectangular plate member whose upper surface 5T is an article placement surface on which an article such as an electronic device can be placed, and is fixed to the upper end of the inner column unit 3b2.

  The side fixed body 5b is provided on the upper surface 5T of the top plate 5a and supports the fall prevention bar 5d. The side fixed bodies 5b are provided along both sides in the width direction of the top plate 5a. Further, the side fixed body 5b is provided slightly in front of the center in the front-rear direction. The side fixing member 5b may be made of an elastically deformable material such as a resin.

  The side portion fixing body 5b is formed with a through portion 5ba penetrating in the width direction of the top plate 5a. The side fixing body 5b is provided with a retaining wall portion 5b3 that rises gradually toward the front as it goes upward on the front side of the through portion 5ba. With this through portion 5ba and the retaining wall portion 5b3, it is possible to engage a wiring cable (not shown; the same applies hereinafter) of an electronic device (not shown; the same applies hereinafter) placed on the top plate 5a. ing.

  The front fixed body 5c is provided at the approximate center in the width direction of the top plate 5a and at the front end, and supports the fall prevention bar 5d.

  The fall prevention bar 5d is arranged along the edge of the top plate 5a above the front side of the top plate 5a. The fall prevention bar 5d has a pair of fall prevention bar main bodies 5d1 disposed between each side fixing body 5b and the front fixing body 5c. The middle part 5d2 of the fall prevention bar main body 5d1 is bent along the corners of the top plate 5a.

  For example, when the cart device 1 is stopped from the running state, the fall prevention bar 5d allows an article such as an electronic device placed on the top plate 5a to slide on the top plate 5a and fall from the front side of the top plate 5a. To prevent.

  A space surrounded by the top plate 5a, the fall prevention bar 5d, the side fixing member 5b, and the front fixing member 5c is a wiring insertion space K1 into which a wiring cable can be inserted. The wiring cable is inserted through the wiring insertion space K1 in the width direction of the top plate 5a on the width direction end portion side of the top plate 5a.

  The handle 5e is provided to protrude further rearward from the rear edge of the top plate 5a. The handle 5e is a part that the operator grips when the cart device 1 is run.

  In addition, an article accommodating portion 5f capable of accommodating an article such as an adapter (not shown) is provided on the lower surface of the top plate 5a. A hook 5f4 capable of engaging with a wiring cable is provided on the side surface of the article housing portion 5f.

In the cart apparatus 1 configured as described above, the wire fitting portion 11b1 formed of resin is fitted to the outer periphery of the straight wire portion 11c1, and the pocket tray 10 having a downward hook shape is formed on the outer periphery of the wire fitting portion 11b1. The downward claw 10j is engaged. That is, between the straight wire portion 11c1 and the pocket tray 10, the wire fitting portion 11b1 of the interposed member 11b formed of resin is interposed. Since the wire fitting portion 11b1 is elastically deformed corresponding to the shape of the gap (clearance) between the downward claw 10j and the straight wire portion 11c1, the pocket tray 10 is attached to the straight wire portion 11c1 while suppressing rattling. Can do.
Moreover, the wire fitting part 11b1 of the interposition member 11b is fitted to each of the plurality of straight wire parts 11c1 that are spaced apart in the vertical direction, and the downward claws 10j of the pocket tray 10 having a downward hook shape are fitted to each wire. The outer periphery of the portion 11b1 is engaged from above. That is, since the downward claw 10j having the downward hook shape of the pocket tray 10 can be engaged with the straight wire portion 11c1 from above at two locations, the pocket tray 10 can be stably attached.
In particular, since vibration or the like may occur when the cart device 1 is moved, prevention of rattling and stable attachment of the pocket tray 10 is preferable in terms of operation and usability of the cart device 1.

  Further, the retaining piece 11b8 protruding from the central wall portion 11b3 of the interposition member 11b to the pocket tray 10 side is in contact with the engagement piece 10k of the pocket tray 10 protruding to the central wall portion 11b3 side. Therefore, the upward movement of the pocket tray 10 having the downward claws 10j engaged with the wire fitting portion 11b1 from above is suppressed.

  Moreover, the downward nail | claw 10j formed with resin engages with the outer periphery of the wire fitting part 11b1. Therefore, since the downward nail | claw 10j elastically deforms corresponding to the outer periphery shape of the wire fitting part 11b1, the shakiness of the pocket tray 10 which has the downward nail | claw 10j can be suppressed further.

  Further, when the lever piece 11b6 is operated in a direction to release the engagement between the engagement piece 10k of the pocket tray 10 and the retaining piece 11b8 of the interposition member 11b, the lever piece 11b6 is elastically deformed in the direction to release. Along with this, the retaining piece 11b8 located above the lever piece 11b6 moves to a position where it does not come into contact with the engaging piece 10k of the pocket tray 10, and the retaining piece 10k of the pocket tray 10 and the retaining piece of the interposition member 11b. The engagement with 11b8 is released.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Cart apparatus 2 ... Main tray 3 ... Cart main body 3b6 ... Locking hole 4 ... Main tray support mechanism 4g3 ... Locking claw 3a ... Leg part (base part)
3b: Support base (support)
10 ... Pocket tray (article placement member, optional member)
10j ... downward nail (engagement part)
10k ... engaging piece (preventing part)
11 ... Pocket tray support mechanism 11a ... Bracket member 11b ... Interposing member (fitting member)
11b1 ... wire fitting part (fitting part)
11b2: Up and down connecting part (connecting part)
11b3 ... Central wall (connecting part)
11b4 ... right and left connecting part (connecting part)
11b6 ... Lever piece (lever part)
11b8 ... Retaining piece (protruding part)
11c1 ... Straight wire part (horizontal crosspiece)
11c10 ... locking claw 100 ... optional mounting structure

Claims (5)

An option mounting structure for mounting an optional member to a plurality of horizontal rails spaced apart in the vertical direction,
A fitting member that is formed of resin and that fits on the outer periphery of each of the horizontal rails, and a fitting member that connects the fitting portions that fit into each of the plurality of horizontal rails;
An option mounting structure comprising: an engagement portion provided on the option member so as to form a downward hook shape and engaged with an outer periphery of each fitting portion from above. The optional member has a retaining portion that protrudes toward the connecting portion.
The fitting member has a protruding portion that protrudes from the connecting portion to the option member side,
The option mounting structure according to claim 1, wherein the protruding portion is in contact with an upper portion of the retaining portion.   3. The option mounting structure according to claim 1, wherein the engaging portion is formed of a resin that engages with an outer periphery of each of the fitting portions.   The said fitting member has a lever part which is elastically deformed in the direction which cancels | releases engagement with the said retaining part and the said protrusion part while it extends below from the said protrusion part. Optional mounting structure. A base that can travel on the floor,
A support extending upward from the base portion;
An article mounting member as an optional member which is attached to the horizontal rail extending from the support by the option mounting structure according to any one of claims 1 to 4 and on which an article can be placed. Cart device characterized by.

Images