JP2017086344A - Article placement part and cart device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform cleaning work of an article placement part that can be attached/detached.SOLUTION: An article placement part 2 comprises: a bottom plate 2a; a peripheral wall part 2b erected along an edge part of the bottom plate 2a; and protruding parts 2c that can be engaged with a fixture body. The protruding parts 2c are formed on only a lower surface of the bottom part 2a.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an article placement unit and a cart device.

  For example, Patent Document 1 and Patent Document 2 disclose a cart apparatus that can be used in offices and hospitals. These cart apparatuses are provided with a detachable tray or the like as an article placement section on which articles can be placed.

JP 2013-17709 A JP 2013-94281 A

  Patent Documents 1 and 2 disclose a configuration in which the type of the article placement unit can be changed by replacing the article placement unit with the placement unit support mechanism that supports the article placement unit. However, in consideration of easiness of replacement work and the like, it is preferable that the article placement section can be replaced separately from the placement section support mechanism. In such a case, for example, an operation lever or the like is provided for the article placement unit, and the article placement unit can be detached from the placement unit support mechanism by operating the operation lever. The workability can be improved.

  On the other hand, even when the article placement section can be easily replaced in this way, it is necessary to ensure the stability of the article placement section at the time of mounting. For this reason, the protrusion part which can be engaged with a mounting part support mechanism etc. is provided with respect to the article mounting part, and this article part is engaged with a mounting part support mechanism etc., thereby stabilizing the article mounting part. It is possible. However, particularly in hospitals and food handling places, it is necessary to keep the article storage area that will store medicines, foods, etc. always clean. In such a case, it is desirable to periodically remove the article placement unit from the cart device and clean it. However, there is a concern that the protrusion provided on the article placement unit may interfere with cleaning. The

  The present invention has been made in view of the above-described problems, and an object of the present invention is to make it possible to easily perform a cleaning operation of an article placing portion that is made detachable.

  The present invention adopts the following configuration as means for solving the above-described problems.

  1st invention is an article mounting part provided with the baseplate, the surrounding wall part erected along the edge of the baseplate, and the projection part which can be engaged with a fixture main body, Comprising: Is employed only on the lower surface of the bottom plate.

  According to such invention, the protrusion part engaged with the fixture main body is formed only on the lower surface of the bottom plate. For this reason, it is not necessary to form protrusions on the upper surface of the bottom plate that forms the article accommodation area and the inner wall surface of the peripheral wall, and the article accommodation area can be easily cleaned. Furthermore, since the protrusion is formed only on the bottom surface of the bottom plate, it is difficult for dust or the like to adhere to the protrusion, and the protrusion can be prevented from being contaminated. For this reason, it becomes possible to easily clean the protrusion itself.

  A second invention is an article placement section comprising a bottom plate, a peripheral wall portion standing along an edge of the bottom plate, and a projection that can be engaged with the fixture body, A configuration is adopted in which the inner surface including the entire upper surface and the entire inner wall surface of the peripheral wall portion is a smooth surface without a bent portion.

  According to the present invention as described above, the inner surface including the upper surface of the bottom plate and the inner wall surface of the peripheral wall portion forming the article accommodation region is a smooth surface without a bent portion. For this reason, it becomes possible to easily and reliably perform the wiping operation of the upper surface of the bottom plate and the inner wall surface of the peripheral wall portion.

  According to a third invention, in the second invention, the minimum curvature radius on the inner surface is a curvature radius in a boundary region between the upper surface of the bottom plate and the inner wall surface of the peripheral wall portion.

  According to the present invention as described above, in the inner surface including the upper surface of the bottom plate and the inner wall surface of the peripheral wall portion forming the article accommodation region, the portion having the smallest curvature radius is the upper surface of the bottom plate and the inner wall surface of the peripheral wall portion. It becomes a border area. For this reason, there is no portion where the radius of curvature is locally small in the entire area of the inner surface, and the entire area of the inner surface becomes a flat surface or a gently curved surface, so that the inner surface can be cleaned more easily and reliably.

  According to a fourth invention, in the second or third invention, a configuration is adopted in which the outer surface of the peripheral wall portion is a smooth surface without a bent portion.

  According to such this invention, the outer peripheral surface of a surrounding wall part can be cleaned more easily and reliably, and the cleaning property can be improved. Furthermore, since there is no unevenness on the outer peripheral surface of the peripheral wall portion, clothes and the like can be prevented from being caught.

  According to a fifth invention, in any one of the first to fourth inventions, a configuration in which reinforcing ribs are formed only on the bottom surface of the bottom plate is employed.

  ADVANTAGE OF THE INVENTION According to this invention, the intensity | strength of an article mounting part can be improved, maintaining the ease of cleaning of an articles | goods accommodation area | region. Further, since the reinforcing rib is formed only on the lower surface of the bottom plate, it is difficult for dust or the like to adhere to the reinforcing rib, and it is possible to prevent the reinforcing rib from becoming dirty. For this reason, the reinforcing rib itself can be easily cleaned.

  In a sixth aspect of the present invention, in any one of the first to fifth aspects, the peripheral wall portions have opposing walls that face each other, define an article accommodation region surrounded by the peripheral wall portions, and A configuration is adopted in which a partition member inserted between them is provided.

  According to the present invention, by inserting the partition member between the opposing walls, the article storage area can be partitioned into a plurality of areas, and the usability of the article placement portion can be improved. Furthermore, since the partition member is fixed by being fitted between the opposing walls, it is not necessary to complicate the surface shape of the opposing walls. For this reason, the article storage area can be easily cleaned by removing the partition member.

  7th invention employ | adopts the structure that the said division member has the notch groove into which one part of the other said division member which cross | intersect was made insertable in the said 6th invention.

  According to the present invention, a plurality of partition members can be arranged to intersect with each other in the article storage area. For this reason, the freedom degree of the division | segmentation layout of an articles | goods accommodation area | region improves, and the usability of an article mounting part can be improved. Furthermore, since the partition members are connected by inserting another partition member into the cutout groove of one partition member, the posture of the partition member can be stabilized.

  8th invention is a cart apparatus, Comprising: The structure provided with the fixture main body which can drive | work, and the article mounting part which is one of the said 1st-7th invention is employ | adopted.

  According to this invention, it becomes a cart apparatus provided with the above-mentioned mounting part support mechanism. For this reason, it becomes a cart apparatus with easy cleaning of an article mounting part.

  ADVANTAGE OF THE INVENTION According to this invention, the wall surface which forms the articles | goods accommodation area | region of the article mounting part made detachable can be made smooth, and it becomes possible to perform the cleaning operation | work of the wall surface which forms an article accommodation area | region easily. .

BRIEF DESCRIPTION OF THE DRAWINGS It is a general view of the cart apparatus in one Embodiment of this invention of a state with the tray installed facing back, (a) is a side view, (b) is a perspective view. BRIEF DESCRIPTION OF THE DRAWINGS It is a general view of the cart apparatus in one Embodiment of this invention of the state in which the tray was installed forward, (a) is a side view, (b) is a perspective view. It is the perspective view of the tray with which the cart apparatus in one Embodiment of this invention is provided, (a) is the perspective view seen from upper direction, (b) is the perspective view seen from the downward direction. It is a three-view figure of the tray with which the cart apparatus in one Embodiment of this invention is provided, (a) is a bottom view, (b) is a side view, (c) is a front view. 1 is a perspective view (a perspective view in which a tray is omitted) including a cart body and a tray support mechanism of a cart device according to an embodiment of the present invention. It is the perspective view which looked at the tray support mechanism with which the cart apparatus in one embodiment of the present invention is provided in the state where the tray was removed from the upper part. It is the perspective view which looked at the tray support mechanism with which the cart apparatus in one embodiment of the present invention is provided in the state where the tray was removed from the lower part. It is the bottom view which looked at the tray support mechanism with which the cart apparatus in one embodiment of the present invention is provided from the lower part in the state where the tray was attached. It is a schematic diagram explaining operation | movement when mounting a tray to the tray support mechanism with which the cart apparatus in one Embodiment of this invention is provided. It is a schematic diagram explaining operation | movement when mounting a tray to the tray support mechanism with which the cart apparatus in one Embodiment of this invention is provided. It is a perspective view which shows the article mounting part in the modification of this invention. (A) is a side view of the 1st partition plate with which the article mounting part in the modification of this invention is equipped, (b) is a side view of the 2nd partition plate with which the article placement part in the modification of this invention is equipped. is there. It is sectional drawing of the holding member with which the article mounting part in the modification of this invention is provided.

  Hereinafter, an embodiment of an article placement unit and a cart device 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 and FIG.2 is the whole cart apparatus 1 of this embodiment. FIG. 1 is an overall view of the cart device 1 in a state where a tray 2 (article placing portion) is installed backward, (a) is a side view, and (b) is a perspective view. FIG. 2 is an overall view of the cart device 1 in a state in which the tray 2 is installed facing forward, where (a) is a side view and (b) is a perspective view. In the following description, the left side in FIGS. 1A and 2A is the front side, and the right side is the rear side.

  The cart apparatus 1 is a fixture for carrying and transferring articles such as document files, medicine bottles, foods, etc. in an office, a hospital, or a food handling place. As shown in FIG. 1 and FIG. A main body 3 and a tray support mechanism 4 are provided. In the present embodiment, the cart body 3 and the tray support mechanism 4 constitute the fixture body of the present invention.

  3A and 3B are perspective views of the tray 2, wherein FIG. 3A is a perspective view seen from above, and FIG. 3B is a perspective view seen from below. 4 is a three-side view of the tray 2, in which (a) is a bottom view, (b) is a side view, and (c) is a front view. As shown in these drawings, the tray 2 is formed on the bottom plate 2a, the peripheral wall portion 2b erected on the edge of the bottom plate 2a, and the lower surface of the bottom plate 2a, and can be engaged with the tray support mechanism 4. And a protruding portion 2c. In the following description, for convenience of description, the side shown in FIG. 4C is referred to as the front side, and the side opposite to the front side is referred to as the back side. The direction connecting the front side and the back side is the depth direction, and the horizontal direction orthogonal to the depth direction is the width direction.

  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, the bottom plate 2a has a substantially rectangular shape with a short depth direction and a long width direction, as shown in FIGS.

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

  The front wall 2d is set to be smaller (that is, lower) in height than the rear wall 2e. That is, the rear wall 2e is set to have a larger (that is, higher) height 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.3 (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.

  A flange 2b1 is formed at the upper end of the peripheral wall 2b. The flange 2b1 is formed by curving the upper edge of the peripheral wall 2b outward. The horizontal width of the flange 2b1 is set to be larger than the thickness dimension of a region excluding the flange 2b1 of the peripheral wall portion 2b (a wall region below the flange 2b1).

  In the tray 2 having the peripheral wall portion 2b, a space surrounded by the bottom plate 2a and the peripheral wall portion 2b is an article accommodation region R in which articles can be placed. That is, the inner surface 20 of the article accommodation region R includes the upper surface of the bottom plate 2a and the inner wall surface of the peripheral wall portion 2b.

  Of the inner surface 20 of the article housing region R, the central portion of the front wall 2d, the central portion of the back wall 2e, the central portion of the first side wall 2f, and the central portion of the second side wall 2g are Each is a flat surface. Hereinafter, a region corresponding to the center portion of the front wall 2d is referred to as a front wall flat region R1, a region corresponding to the center portion of the back wall 2e is referred to as a back wall flat region R2, and corresponds to the center portion of the first side wall 2f. The region is referred to as a first side wall flat region R3, and a region corresponding to the central portion of the second side wall 2g is referred to as a second side wall flat region R4.

  Of the inner surface 20 of the article housing region R, a boundary region between the front wall 2d and the first side wall 2f, a boundary region between the front wall 2d and the second side wall 2g, and a boundary region between the back wall 2e and the first side wall 2f The boundary region between the back wall 2e and the second side wall 2g is a curved surface. Hereinafter, the boundary region between the front wall 2d and the first side wall 2f is referred to as a first curved side region R5, the boundary region between the front wall 2d and the second side wall 2g is referred to as a second curved side region R6, and the rear wall 2e. The boundary region with the first side wall 2f is referred to as a third curved side region R7, and the boundary region between the back wall 2e and the second side wall 2g is referred to as a fourth curved side region R8.

  The above-described flat region and the curved side region that are connected to each other are smoothly connected without causing a bent portion. That is, the first curved side region R5 is integrally connected to the front wall flat region R1 and the first side wall flat region R3 without causing a step. The second curved side region R6 is integrally connected to the front wall flat region R1 and the second side wall flat region R4 without causing a step. The third curved side region R7 is integrally connected to the back wall flat region R2 and the first side wall flat region R3 without causing a step. The fourth curved side region R8 is integrally connected to the back wall flat region R2 and the second side wall flat region R4 without causing a step.

  Moreover, the area | region corresponded in the center part of the upper surface of the baseplate 2a among the inner surfaces 20 of the articles | goods accommodation area | region R is made into the plane. Hereinafter, a region corresponding to the central portion of the upper surface of the bottom plate 2a is referred to as a bottom plate flat region R9. Moreover, the boundary area | region of the baseplate 2a and the surrounding wall part 2b among the inner surfaces 20 of the articles | goods accommodation area | region R is made into the curved surface. Hereinafter, the boundary region between the bottom plate 2a and the front wall 2d is referred to as a first curved bottom region R10, the boundary region between the bottom plate 2a and the back wall 2e is referred to as a second curved bottom region R11, and the bottom plate 2a and the first sidewall 2f Is referred to as a third curved bottom region R12, and a boundary region between the bottom plate 2a and the second side wall 2g is referred to as a fourth curved bottom region R13. The boundary region between the first curved bottom region R10 and the third curved bottom region R12 is referred to as a first corner region R14, and the boundary region between the first curved bottom region R10 and the fourth curved bottom region R13 is the second corner region. The boundary region between the second curved bottom region R11 and the third curved bottom region R12 is referred to as a third corner region R16, and the boundary region between the second curved bottom region R11 and the fourth curved bottom region R13 is referred to as R15. This is referred to as a corner region R17.

  The above-described flat region and the curved bottom region connected to each other are smoothly connected without causing a bent portion. That is, the first curved bottom region R10 is integrally connected to the front wall flat region R1 and the bottom plate flat region R9 without causing a step. Further, the second curved bottom region R11 is integrally connected to the back wall flat region R2 and the bottom plate flat region R9 without causing a step. The third curved bottom region R12 is integrally connected to the first side wall flat region R3 and the bottom plate flat region R9 without causing a step. The fourth curved bottom region R13 is integrally connected to the second side wall flat region R4 and the bottom plate flat region R9 without causing a step.

  In addition, the curved bottom corner region is smoothly connected to the flat region, the curved side region, and the curved bottom side region without causing a bent portion. That is, the first corner region R14 is integrally connected to the first curved side region R5, the bottom plate flat region R9, the first curved bottom side region R10, and the third curved bottom side region R12 without causing a step. The second corner region R15 is integrally connected to the second curved side region R6, the bottom plate flat region R9, the first curved bottom side region R10, and the fourth curved bottom side region R13 without causing a step. The third corner region R16 is integrally connected to the third curved side region R7, the bottom plate flat region R9, the second curved bottom side region R11, and the third curved bottom side region R12 without causing a step. The fourth corner region R17 is integrally connected to the fourth curved side region R8, the bottom plate flat region R9, the second curved bottom side region R11, and the fourth curved bottom side region R13 without causing a step.

  Such an inner surface 20 is formed by smoothly connecting all the above-described regions without producing a stepped portion. For this reason, the inner surface 20 is a smooth surface (that is, a smooth surface) in which no bent portions are formed and no stepped portion is formed.

  In addition, the curved side region, the curved bottom region, and the curved bottom corner region are curved with a constant radius of curvature, for example. In such an inner surface 20 of the article accommodating region R, the minimum curvature radius is the curvature radius of the curved side region, the curved bottom region, and the curved bottom corner region. The minimum radius of curvature is preferably 5 mm or more. Thus, by setting the minimum curvature radius to 5 mm or more, when cleaning the inner surface 20 of the article accommodation region R, it becomes possible to easily wipe the entire inner surface 20 or the like.

  As shown in FIG. 3A, the tray 2 has a shape in which the height of the peripheral wall portion 2b is low on the front side and the height of the peripheral wall portion 2b is high on the back side. For this reason, the front side of the article storage area of the tray 2 (hereinafter referred to as the front-side storage area Ra) is a region where the peripheral wall 2b is low, so that articles 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 tray 2 (hereinafter referred to as the back side storage area Rb) has a high peripheral wall 2b. Therefore, even if a tall article is tilted by running vibration of the cart device 1 or the like, the peripheral wall For example, it is an area suitable for stably storing a tall article.

  The protrusion 2c is a portion protruding downward from the lower surface of the bottom plate 2a. In the present embodiment, as shown in FIG. 4A, a plurality of protrusions 2c are formed only on the bottom surface of the bottom plate 2a. For convenience of explanation, these protrusions 2 c are grouped into a left protrusion group 2 cA arranged on the left side of the tray 2 and a right protrusion group 2 cB arranged on the right side of the 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 protrusion 2c1, back side protrusion 2c2, front side center protrusion 2c3 and back side center protrusion 2c4 are arranged substantially linearly in the depth direction as shown in FIG. 4A. .

  The front projection 2c1 has a hanging part 2c11 that hangs downward from the lower surface of the tray 2, and an extending part 2c12 that protrudes from the lower end of the hanging part 2c11 toward the right side of the tray 2. The extending portion 2c12 is a substantially rectangular plate portion whose long side is horizontally arranged along the depth direction of the tray 2, and the right side is connected to the lower end of the drooping portion 2c11 so that the lower surface of the tray 2 It is arranged with a certain gap. As shown in FIG. 4A, the front projection 2c1 is disposed on the most front side of the tray 2 in the left projection group 2cA.

  The rear-side protrusion 2c2 has the same shape as the front-side protrusion 2c1, and hangs downward from the lower surface of the tray 2 and protrudes from the lower end of the suspending part 2c21 toward the right side of the tray 2. And the extended portion 2c22. The extending portion 2c22 is a substantially rectangular plate portion whose long side is horizontally arranged along the depth direction of the tray 2, and the right side is connected to the lower end of the hanging portion 2c21, whereby the lower surface of the tray 2 is It is arranged with a certain gap. The distance from the extended portion 2c22 to the lower surface of the tray 2 is set to be the same as the distance from the extended portion 2c12 of the front-side protruding portion 2c1 to the lower surface of the tray 2. As shown in FIG. 4A, the back side protrusion 2c2 is disposed on the back side of the tray 2 most in the left side 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 arranged on the front side of the tray 2, and the back side central projection 2c4 is arranged on the back side of the tray 2. Between these front side central projection part 2c3 and back side central projection part 2c4, insertion gap S1 in which the below-mentioned engagement projection 4f with which the tray support mechanism 4 is provided is inserted is formed.

  The front-side central protrusion 2c3 is disposed so as to be slightly displaced toward the widthwise central portion of the tray 2 with respect to the front-side protrusion 2c1 and the back-side protrusion 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 tray 2. The inclined surface 2c31 is a surface that faces the center side in the width direction of the tray 2 from the front side of the tray 2 toward the insertion gap S1, and is engaged when the tray 2 is attached or detached with the front side facing the cart body 3 side. The protrusion 4f is guided. Similar to the front side central projection 2c3, the rear side central projection 2c4 is arranged slightly displaced toward the width direction central portion of the tray 2 with respect to the front side projection 2c1 and the rear side projection 2c2. . 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 tray 2. The inclined surface 2c41 is a surface that faces from the back side of the tray 2 toward the insertion gap S1 toward the center in the width direction of the tray 2, and is engaged when the tray 2 is attached or detached with the back side facing the cart body 3 side. The protrusion 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 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 provided in the tray support mechanism 4 is inserted is formed between the front side central protrusion 2c7 and the back side central protrusion 2c8.

  Further, as shown in FIG. 3B and the like, a reinforcing rib 2h for improving the strength of the tray 2 is formed at the center of the lower surface of the bottom plate 2a. In the present embodiment, such reinforcing ribs 2h are formed only on the lower surface of the bottom plate 2a.

  FIG. 5 is a perspective view (a perspective view in which the tray 2 is omitted) including the cart body 3 and the tray support mechanism 4. The cart body 3 includes a leg portion 3a, a support base 3b, a top plate unit 3c, and an elevating operation portion 3d.

  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.

  The support base 3b has an outer column unit 3b1 and an inner column unit 3b2. The outer column unit 3b1 is a hollow columnar portion having a shelf column inside, and is erected on the base portion 3a2 of the leg portion 3a. The shelf column has a plurality of locking holes that extend in the vertical direction and are arranged at equal intervals in the vertical direction. The tray support mechanism 4 can be arranged at an arbitrary height by locking the tray support mechanism 4 to a part of the plurality of locking holes. The inner column unit 3b2 is a hollow columnar part that is inserted into the outer column unit 3b1 and to which the top unit 3c is fixed at the upper end.

  Such an inner column unit 3b2 is movable in the vertical direction inside the outer column unit 3b1. Here, when the inner column unit 3b2 protrudes largely upward from the outer column unit 3b1, the support base 3b is extended as a whole, and the top panel unit 3c is arranged at a high position. 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 panel unit 3c is disposed at a low position.

  The top plate unit 3c includes a top plate 3c1, a fall prevention bar 3c2, and a handle 3c3. The top plate 3c1 is a substantially rectangular plate member whose upper surface is an article placement surface, and is fixed to the upper end of the columnar portion 3b7 of the inner column unit 3b2. The fall prevention bar 3c2 is supported above the top plate unit 3c and on the front side of the top plate unit 3c, and is bent along the edge of the top plate unit 3c. The fall prevention bar 3c2 prevents an article placed on the top board 3c1 from sliding on the top board 3c1 and dropping from the front side of the top board 3c1, for example, when the cart device 1 stops from the running state. The handle 3c3 is provided to protrude further rearward from the rear edge of the top plate 3c1. The handle 3c3 is a part that the operator grips when the cart device 1 is run.

  The elevating operation unit 3d includes an operation lever 3d1 and a lock mechanism (not shown). The operation lever 3d1 is disposed below the handle 3c3 (see FIG. 1 and FIG. 2), and unlocks the inner support unit 3b2 by the lock mechanism when operated. The lock mechanism fixes the inner column unit 3b2 to the outer column unit 3b1, and releases the lock only when the operation lever 3d1 is operated. By such an elevating operation unit 3d, the top plate 3c1 can be arranged at an arbitrary height.

  In the present embodiment, two tray support mechanisms 4 are provided for the cart body 3 as shown in FIG. These tray support mechanisms 4 are spaced apart in the vertical direction, and each support the tray 2 in a detachable manner. Note that these tray support mechanisms 4 have the same configuration except that the heights of the tray support mechanisms 4 are different. Therefore, one of them will be described in the following description.

  FIG. 6 is a perspective view of the tray support mechanism 4 as viewed from above with the tray 2 removed. FIG. 7 is a perspective view of the tray support mechanism 4 as viewed from below with the tray 2 removed. FIG. 8 is a bottom view of the tray support mechanism 4 as viewed from below with the tray 2 attached. As shown in these drawings, the 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. 8, the base portion 4c has a substantially rectangular shape with a smaller area than the bottom surface of the tray 2, and covers the bottom surface of the tray 2 so that the vicinity of both left and right ends of the bottom surface of the tray 2 is exposed. ing.

  Also, the front edge 4c1, the left edge 4c2, and the right edge 4c3 of the base portion 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.

  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 shown in FIG. 6, as the contact portion 4d, the front center contact portion 4d1, the left front contact portion 4d2, the left rear contact portion 4d3, and the right front contact portion 4d4 A right rear contact portion 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 has an upper surface that is a contact surface that contacts the lower surface of the 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 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 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 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 a top surface that is in contact with the bottom surface of the tray 2, and is disposed so that the top surface is flush with the top 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 right rear contact portion 4d5 also has an upper surface that is a contact surface that contacts the lower surface of the tray 2, and is disposed so that the upper surface is 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 tray 2. The tray 2 is supported by being brought into contact with these contact surfaces. That is, the 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 side. It is supported from below by the upper surface of the contact portion 4d5. As a result, the downward movement of the 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 the state in which the tray 2 is mounted on the support unit 4a, for example, the extension 2c12 of the front projection 2c1 is inserted below the left front contact 4d2, and the extension 2c22 of the rear projection 2c2 is inserted. 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. For this reason, when the tray 2 attached to the support unit 4a is moved upward, the extension 2c12 of the front side protrusion 2c1 interferes with the left front contact part 4d2, and the extension of the back side protrusion 2c2 extends. The protruding portion 2c22 interferes with the left rear contact portion 4d3, the extending portion 2c52 of the front projection 2c5 interferes with the right front contact portion 4d4, and the extending portion 2c62 of the rear projection 2c6 is on the right rear side. Interfering with the contact portion 4d5. As a result, the upward movement of the tray 2 is restricted.

  Further, when the tray 2 mounted on the support unit 4a is to be moved in the left-right direction of the cart device 1, for example, an extension 2c12 of the front projection 2c1 and an extension 2c22 of the rear projection 2c2 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 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 facing up and down in an opening 4c5 formed in the base portion 4c, and a pushing 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 detaching operation unit 4e disposed on the left side of the base unit 4c is provided with the pushing portion 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 arranged on the right side of the base unit 4c is provided with a pushing portion 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 projection 4f installed on the operation plate 4e1 is inserted into the insertion gap S1 (or the insertion gap S2) of the tray 2 with the tray 2 mounted on the support unit 4a. Is set to a position.

  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 length of the insertion gap S1 of the tray 2 and the depth of the insertion gap S2. When the operation plate 4e1 is at the reference position and the tray 2 is mounted on the support unit 4a, the engagement protrusion 4f has an insertion gap S1 (or insertion gap S2) of the tray 2 as shown in FIG. Inserted.

  For example, when the engagement protrusion 4f is inserted into the insertion gap S1 of the tray 2, as shown in FIG. 8, the front-side center protrusion 2c3 and the back-side center protrusion 2c4 of the tray 2 before and after the engagement protrusion 4f Will be placed. As a result, when the tray 2 is about to move in the front-rear direction of the cart device 1, the engagement protrusion 4f interferes with the front-side center protrusion 2c3 or the back-side center protrusion 2c4, and the tray 2 moves in the front-rear direction. Is regulated. Further, when the engagement protrusion 4f is inserted into the insertion gap S2, as shown in FIG. 8, the front-side center protrusion 2c7 and the back-side center protrusion 2c8 of the tray 2 are disposed before and after the engagement protrusion 4f. Will be. As a result, when the 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 7 or the back-side center protrusion 2 c 8, and the tray 2 moves in the front-rear direction. Is regulated. For this reason, the tray 2 mounted on the support unit 4a cannot move in the front-rear direction of the cart device 1.

  As shown in FIG. 6, the bracket portion 4g includes a base portion 4g1 (attachment portion) fixed to the support base 3b of the cart body 3 and two arms extending forward from the base portion 4g1. 4g2. The base portion 4g1 is a portion having a substantially U shape when viewed from the vertical direction, and has a locking claw at an end portion of the approximately U shape. The bracket portion 4g (that is, the tray support mechanism 4) is fixed to the cart body 3 by locking the locking claw to the shelf column. Further, the bracket portion 4 g (that is, the tray support mechanism 4) fixed to the cart body 3 can be removed from the cart body 3 by being lifted from the cart body 3.

  As shown in FIG. 7, 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 are formed in a plate shape in which the thickness in the left-right direction of the cart device 1 is reduced, and the upper end is fixed to the lower surface of the base portion 4c. Such an arm 4g2 supports the base portion 4g1 from below.

  The lock unit 4b is installed with respect to the base part 4g1 of the bracket part 4g, and restricts the upward movement of the base part 4g1 with respect to the support base 3b. The lock unit 4b is pulled to the near side by the operator to release the locked state between the support base 3b and the base portion 4g1.

  Subsequently, in the cart apparatus 1 of the present embodiment configured as described above, an operation when the tray 2 is mounted on the tray support mechanism 4 will be described with reference to FIGS. 9 and 10.

  First, as shown in FIG. 9A, the tray 2 is disposed on the near side of the mounting position (fixed position) of the tray support mechanism 4. At this time, the front-side projection 2c1, the rear-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 2c7 of the tray 2 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 right side provided on the base part 4c of the support unit 4a. The tray 2 is disposed so as not to interfere with the rear contact portion 4d5.

  Subsequently, as shown in FIG. 9B, the tray 2 is slid rearward. Then, as shown in FIGS. 10A and 10B, 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. 4A). Alternatively, when contacting the rear central projection 2c8 belonging to the right projection group 2cB (see FIG. 4 (a)), the engaging projection 4f is inclined 2c41 (see FIG. 4 (a)) of the rear central projection 2c4 or the rear side. It is guided to the inclined surface 2c81 (see FIG. 4A) of the central protrusion 2c8 and gradually moved to the center side of the 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 detachment operation portion 4e (see FIG. 9). ). 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 tray 2 and the left front contact part 4d2 of the support unit 4a are connected to the rear side protrusion 2c2 of the tray 2. The left rear contact portion 4d3 of the support unit 4a is the front projection 2c5 of the tray 2 and the right front contact portion 4d4 of the support unit 4a is the rear projection 2c6 of the tray 2 and the right of the support unit 4a. It arrange | positions so that the rear side contact part 4d5 may overlap in a perpendicular direction. As described above, the tray 2 is fixed to the tray support mechanism 4 in the front / rear, left / right and up / down directions, and the mounting of the tray 2 is completed.

  When the tray 2 mounted in this way is detached from the tray support mechanism 4, the operation plate 4e1 of the tray removal operation portion 4e is moved by pushing the pushing portion 4e3. As a result, the engagement protrusion 4f is retracted from the insertion gap S1 or the insertion gap S2, and the tray 2 can be moved in the front-rear direction. In this state, the operator moves the tray 2 to the position shown in FIG. 9A, and then grips and lifts the tray 2 to detach the tray 2 from the tray support mechanism 4.

  Here, an example has been described in which the tray 2 is mounted on the tray support mechanism 4 with the back side of the tray 2 facing the support base 3b of the cart body 3. That is, the example in which the tray 2 is mounted in the form shown in FIG. 2 has been described. However, in the cart apparatus 1 of the present embodiment, as shown in FIG. 1, the tray 2 can be mounted on the tray support mechanism 4 with the front side of the tray 2 facing the support base 3 b side of the cart body 3.

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

  In the tray 2 and the cart apparatus 1 of the present embodiment as described above, the protrusion 2c of the tray 2 is formed only on the lower surface of the bottom plate 2a. For this reason, it is not necessary to form the protrusions 2c on the upper surface of the bottom plate 2a forming the article accommodation region R and the inner wall surface of the peripheral wall portion 2b, and the article accommodation region R can be easily cleaned. Furthermore, since the protrusion 2c is formed only on the bottom surface of the bottom plate 2a, it is difficult for dust or the like to adhere to the protrusion 2c, and the protrusion 2c can be prevented from becoming dirty. For this reason, it becomes possible to clean the protrusion 2c easily.

  In the tray 2 of the present embodiment, the inner surface 20 including the entire upper surface of the bottom plate 2a and the entire inner wall surface of the peripheral wall portion 2b is a smooth surface without a bent portion. For this reason, it becomes possible to easily and reliably perform the wiping operation of the upper surface of the bottom plate 2a and the inner wall surface of the peripheral wall portion 2b.

  In the tray 2 of the present embodiment, the minimum radius of curvature on the inner surface 20 is the radius of curvature in the boundary region (curved bottom region) between the upper surface of the bottom plate 2a and the inner wall surface of the peripheral wall 2b. Similarly, the curved side region and the curved bottom corner region are curved with a minimum radius of curvature. For this reason, a portion having a locally small radius of curvature does not occur in the entire area of the inner surface 20 of the article accommodating region R, and the entire area of the inner surface 20 becomes a flat surface or a gently curved surface, so that the inner surface 20 can be cleaned more easily and reliably. Can be done.

  Further, in the tray 2 of the present embodiment, the reinforcing rib 2h is formed only on the lower surface of the bottom plate 2a. According to such a tray 2, the strength of the tray 2 can be improved while maintaining the ease of cleaning the article accommodation region R. Further, since the reinforcing rib 2h is formed only on the lower surface of the bottom plate 2a, it is difficult for dust or the like to adhere to the reinforcing rib 2h, and the reinforcing rib 2h can be prevented from being stained. For this reason, the reinforcing rib 2h can be easily cleaned.

  Further, in the tray 2 of the present embodiment, the outer surface of the peripheral wall portion 2 b is also a smooth surface without a bent portion, like the inner surface 20. For this reason, the outer peripheral surface of the peripheral wall 2b can be more easily and reliably cleaned, and the cleaning property can be improved. Furthermore, since there is no unevenness on the outer peripheral surface of the peripheral wall portion 2b, it is possible to prevent clothes and the like from being caught.

  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.

(1) For example, it is also possible to employ a configuration in which a partition member such as a partition plate is installed inside the tray 2 and the article accommodation region R is partitioned into a plurality of regions. FIG. 11 is a perspective view showing an example when this configuration is adopted. In the example shown in FIG. 11, the article placement portion of the present invention includes the tray 2, the first partition plate 11 (partition member), the second partition plate 12 (partition member), and a plurality of holding members in the above embodiment. Member 13.

  FIG. 12A is a side view of the first partition plate 11. The first partition plate 11 is a plate member having a length slightly shorter than the depth dimension of the bottom plate 2 a of the tray 2. In the first partition plate 11, a plurality of slits 11 a (notch grooves) having a width corresponding to the thickness of the second partition plate 12 are formed in the length direction. These slits 11 a are formed so as to reach the lower end of the first partition plate 11. Moreover, the 1st partition plate 11 has the protrusion piece 11b in each of the edge part of both sides. These protruding pieces 11b are portions into which groove portions 13a described later of the holding member 13 are inserted. The first partition plate 11 is inserted between the front wall 2d and the back wall 2e of the peripheral wall portion 2b, which is a facing wall arranged to face each other, with the holding member 13 interposed therebetween.

  FIG. 12B is a side view of the second partition plate 12. The second partition plate 12 is a plate member having a length slightly shorter than the width dimension of the bottom plate 2 a of the tray 2. In the second partition plate 12, a plurality of slits 12a (notch grooves) having a width matching the thickness of the first partition plate 11 are formed in the length direction. These slits 12 a are formed so as to reach the upper end of the second partition plate 12. Moreover, the 2nd partition plate 12 has the protrusion piece 12b in each of the edge part of both sides. These protruding pieces 12b are portions into which groove portions 13a described later of the holding member 13 are inserted. The second partition plate 12 is inserted between the first side wall 2f and the second side wall 2g, which are opposed walls arranged opposite to each other, with the holding member 13 interposed therebetween.

  By inserting the second partition plate 12 into the slit 11a of the first partition plate 11 and inserting the first partition plate 11 into the slit 12a of the second partition plate 12 so that the slit 11a and the slit 12a overlap in the vertical direction, The first partition plate 11 and the second partition plate 12 can be assembled in a cross shape. In this way, by assembling the first partition plate 11 and the second partition plate 12 in a cross shape, the first partition plate 11 and the second partition plate 12 can be erected on the bottom plate 2a without being supported.

  The holding member 13 is interposed between the end portion of the first partition plate 11 and the peripheral wall portion 2b, and between the end portion of the second partition plate 12 and the peripheral wall portion 2b. FIG. 13 is a cross-sectional view of the holding member 13. The holding member 13 is formed of an elastically deformable resin material or the like, and as shown in FIG. 13, a groove 13a into which the protruding piece 11b of the first partition plate 11 or the protruding piece 12b of the second partition plate 12 is inserted. And a pair of contact pieces 13c extending outward from the tip portion 13b. Each contact piece 13c is connected to an end portion of the tip end portion 13b opposite to the end portion where the groove portion 13a is formed, and the tip end in an inclined posture so as to move away from the tip end portion 13b. It is connected to the part 13b.

  These contact pieces 13c are portions that contact the inner wall surface of the peripheral wall portion 2b when the holding member 13 is interposed between the first partition plate 11 or the second partition plate 12 and the peripheral wall portion 2b. is there. Here, when the holding member 13 is inserted between the first partition plate 11 or the second partition plate 12 and the peripheral wall portion 2b, the tip end portion 13b approaches the peripheral wall portion 2b, and the contact pieces 13c spread from each other. It is deformed as follows. As a result, the contact piece 13c is elastically deformed, and the distal end portion 13b is urged away from the peripheral wall portion 2b by the restoring force of the contact piece 13c. As a result, the first partition plate 11 and the second partition plate 12 are sandwiched from both ends, and the first partition plate 11 and the second partition plate 12 are fixed to the tray 2.

  According to such a configuration, by inserting the first partition plate 11 and the second partition plate 12, the article accommodation area R can be partitioned into a plurality of areas, and the usability of the article placement section is improved. Can do. Furthermore, since the 1st partition plate 11 and the 2nd partition plate 12 are fixed by being inserted between opposing walls, it is not necessary to make the surface shape of an opposing wall complicated. For this reason, the inner surface 20 of the article accommodation region R can be easily cleaned by removing the first partition plate 11 and the second partition plate 12.

  Further, in this configuration, the first partition plate 11 has a slit 11 a into which the second partition plate 12 can be inserted, and the second partition plate 12 has a slit 12 a into which the first partition plate 11 can be inserted. . For this reason, the 1st partition plate 11 and the 2nd partition plate 12 can be made to cross | intersect in the articles | goods accommodation area | region R. FIG. For this reason, the freedom degree of the division layout of the articles | goods accommodation area | region R improves, and the usability of an article mounting part can be improved. Furthermore, since the first partition plate 11 and the second partition plate 12 are connected in a cross shape, the postures of the first partition plate 11 and the second partition plate 12 can be stabilized.

(2) Moreover, in the said embodiment, the structure from which the height of the surrounding wall part 2b differs by the front wall 2d side and the back wall 2e side was demonstrated. However, the present invention is not limited to this, and it is possible to adopt a configuration in which the height of the peripheral wall portion 2b is the same in the entire circumference.

(3) In the above embodiment, a curved region may be formed with respect to a region that was a flat region (front wall flat region R1, rear wall flat region R2, etc.) of the inner surface 20. For example, it is possible to provide a rib whose surface is a curved surface.

  DESCRIPTION OF SYMBOLS 1 ... Cart apparatus, 2 ... Tray (article mounting part), 2a ... Bottom plate, 2b ... Perimeter wall part, 2c ... Projection part, 2d ... Front wall (opposite wall), 2e ... Back wall ( Opposite wall), 2f ...... first side wall (opposite wall), 2g ... second side wall (opposed wall), 2h ... reinforcing rib, 11 ... first partition wall (partition member), 11a ... slit (notch) Groove), 12 ... second partition wall (partition member), 12a ... slit (notched groove), 20 ... inner surface

Claims (8)

An article placement section comprising a bottom plate, a peripheral wall portion erected along the edge of the bottom plate, and a protrusion that can be engaged with the fixture body,
The article mounting portion, wherein the protrusion is formed only on the bottom surface of the bottom plate. An article placement section comprising a bottom plate, a peripheral wall portion erected along the edge of the bottom plate, and a protrusion that can be engaged with the fixture body,
The article placement portion, wherein an inner surface including the entire upper surface of the bottom plate and the entire inner wall surface of the peripheral wall portion is a smooth surface without a bent portion.   3. The article placement section according to claim 2, wherein the minimum curvature radius on the inner surface is a curvature radius in a boundary region between the upper surface of the bottom plate and the inner wall surface of the peripheral wall section.   The article mounting portion according to claim 2 or 3, wherein the outer surface of the peripheral wall portion is a smooth surface without a bent portion.   The article mounting portion according to any one of claims 1 to 4, further comprising a reinforcing rib formed only on a lower surface of the bottom plate. The peripheral wall portions have opposing walls facing each other;
The article placement section according to any one of claims 1 to 5, further comprising a partition member that partitions the article storage area surrounded by the peripheral wall section and is fitted between the opposing walls.   The article placement section according to claim 6, wherein the partition member has a cutout groove into which a part of the other partition member that intersects can be inserted.   A cart apparatus comprising: a travelable fixture main body; and the article placement unit according to any one of claims 1 to 7.

Images