Trolley plate

Abstract

To provide a cart board for transport carts suitably used for a clean room or the like, in which a lattice-like dent does not appear on a surface exposed to outside of the cart board and dust or stains adhering to the cart board can be readily removed.SOLUTION: A cart board on which an object to be transported is placed includes a body 1 having a hollow part 2 internally, and a lid 10 having a hollow part 11 internally. A claw 13 of the lid 10 is hung onto a step 4 of the body 1, whereby the lid 10 is detachably attached to the body 1. A honeycomb rib 14 provided in the hollow part 11 of the lid 10 and a honeycomb rib 5 provided in the hollow part 2 of the body 1 are vertically abutted on each other, whereby a honeycomb structure is created.SELECTED DRAWING: Figure 4

Description

Technical Field

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[0001] The present invention relates to a carriage board on which an object to be conveyed for a transport cart is placed. More specifically, it belongs to the technical field of a carriage board for a transport cart that is suitable for use in a clean room or the like by preventing lattice-shaped recesses from appearing on the exposed surface of the carriage board to the outside and allowing dust and dirt attached to the carriage board to easily fall off.

Background Art

[0002] Conventionally, a cart 1 disclosed in Patent Document 1 below includes a base plate on which an article can be placed and casters attached corresponding to the four corners on the lower surface side of the base plate. The base plate has a substantially rectangular plate shape, and includes a main body portion configured with an upper surface side as a placement surface on which an article can be placed, long-side side ribs extending downward from a pair of opposite long-side portions of the main body portion, short-side side ribs extending downward from a pair of opposite short-side portions of the main body portion, and reinforcing ribs provided in a lattice shape on the inner peripheral side of the pair of long-side side ribs and the pair of short-side side ribs. The reinforcing ribs include those extending along the longitudinal width direction of the base plate (parallel to the long-side side ribs) and those extending along the short-width direction of the base plate (parallel to the short-side side ribs), and each is configured to be connected to the short-side side rib or the long-side side rib (see paragraph

[0023] , claim 7, FIG. 2, etc. of the same document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The cart of Patent Document 1 is a rectangular single plate, and ribs for ensuring rigidity are exposed on the outside (floor side) in an exposed state, and dust easily enters there and is difficult to clean. Furthermore, with large single sheets of polypropylene resin molded products, a problem has been pointed out: due to the need to incorporate many thick ribs in a grid pattern to ensure strength, sink marks from the ribs are noticeable on the surface where the product is placed, resulting in an unsightly appearance. These are issues that need to be resolved.

[0005] Therefore, the object of the present invention is to provide a trolley plate that is hygienic in that dirt and debris adhering to the trolley plate can be easily removed by not exposing the reinforcing ribs on the outer surface of the trolley plate, and also has a good appearance in that sink marks caused by the reinforcing ribs are not noticeable. [Means for solving the problem]

[0006] As a means of solving the above problems, the invention described in claim 1 is a trolley plate on which an object to be transported is placed for a transport trolley 20, The trolley plate is composed of a main body 1 having a hollow section 2 inside and a lid 10 having a hollow section 11 inside, and is provided inside the hollow section 11 of the lid 10 A regular hexagon in plan view A honeycomb-shaped rib 14 and provided within the hollow portion 2 of the main body 1 A regular hexagon in plan view The honeycomb-shaped ribs 5 are in contact with each other from above and below. The cross-section is a regular hexagon. This is a trolley plate characterized by being formed to have a honeycomb structure.

[0007] The invention described in claim 2 is, A stepped portion 4 is provided around the edge 3 of the main body 1, and a claw portion 13 is provided around the edge 12 of the lid 10 that hooks onto the stepped portion 4. The claw portion 13 of the lid 10 hooks onto the stepped portion 4 of the main body 1, so that the lid 10 can be detachably attached to the main body 1. The trolley plate described in claim 1, characterized in that...

[0009] The invention described in claim 3 is characterized in that the main body 1 is provided with a mounting portion 6 for attaching a handle mounting device 22, and the lid 10 is formed with a notch 15 so as not to interfere with the handle mounting device 22. 1 This is the bogie plate as described. [Effects of the Invention]

[0011] Claim 1 of the present invention 、2The trolley plate in question consists of two components, a main body and a lid, with the lid attached to the main body. This configuration eliminates the appearance of grid-like indentations (ribs) on the surface of the trolley plate that is exposed to the outside, making it easy to remove dirt and debris that adheres to the trolley plate, thus providing superior hygiene. Therefore, it can be used in clean rooms and other environments where high-quality hygiene management is required. Furthermore, the lid can be easily attached and detached by hooking a suitable number of claws, which are provided around the edge of the lid, onto the stepped edge of the main body, allowing for easy lid replacement. Moreover, since large molded products require a corresponding injection volume, conventional single-piece molding machines required large molding machines. However, by dividing the product into two parts, the main body and the lid, the mass of each part is reduced, making it possible to manufacture trolley plates of a size that could only be produced with large molding machines, even with existing molding machines. For example, where a single piece would weigh approximately 5900g, by dividing it into molded parts weighing approximately 4400g (main body) and approximately 1500g (lid), it has become possible to manufacture the product using existing molding machines. In addition, the main body is designed for strength-related functional aspects, while the lid is designed for features such as preventing luggage from slipping. This separation of required functions allows for cost reduction by using a common main body when producing multiple types of lids, and offers the advantage of being able to create multiple trolleys with different appearances by simply changing the combination specifications.

[0012] Also, By bringing honeycomb-shaped ribs, located within the hollow sections of the lid and the upper and lower parts of the main body, into contact with each other, a rigid plate-like body can be created. In particular, the height of the lid can be made thin and light, resulting in a trolley plate with a good appearance where sink marks are not noticeable on the mounting surface. moreover, By adopting a honeycomb structure in the center of the hollow section of the bogie plate, the total amount of ribs can be minimized, leading to weight reduction. At the same time, deflection in the center is suppressed, resulting in a plate-like body that has strength relative to its height. Claim 3 According to the trolley plate, the handle attachment is attached to the attachment part on the main body, but the four corners of the lid have notches formed so as not to interfere with the handle attachment, making it convenient for the lid to be easily attached to and detached from the main body. ru.

Brief Description of the Drawings

[0013] [Figure 1] (A) is a plan view showing the combined state of the lid and the main body constituting the carriage plate, (B) is a front view of (A), (C) is a sectional view taken along line A-A of (A), and (D) is a side view of (A). [Figure 2] (A) is a perspective view showing an enlarged corner of the main body, (B) are perspective views showing the claw portions of the lid enlarged from above and below, and (C) is an enlarged sectional view showing the state where the claw portion of the lid is hooked on the stepped portion of the main body at the corner of the carriage plate at one end of the sectional view taken along line A-A of Fig. 1(A). [Figure 3] It is a right perspective view showing the carriage plate from above. [Figure 4] It is a left perspective view showing the carriage plate with a part cut away. [Figure 5] (A) is a perspective view showing the surface of the lid from above, and (B) is a perspective view showing the back surface of the lid from below. [Figure 6] (A) is a perspective view showing the surface of the main body from above, and (B) is a perspective view showing the back surface of the main body from below. [Figure 7] It is an explanatory view showing the combination procedure of the lid and the main body. [Figure 8] It is an explanatory view showing the attachment procedure of the handle attachment tool through the attachment portion of the main body and the attachment procedure of the lid to the main body. [Figure 9] It is an overall perspective view showing the conveying carriage with the carriage plate attached.

Modes for Carrying Out the Invention

[0014] Next, the carriage plate according to the present invention will be described based on the drawings. This carriage plate is preferably implemented as a carriage plate constituting a conveying carriage 20 as shown in Fig. 9, for example, and is used for placing an object to be conveyed on the placement surface 17 and conveying it. As the carriage 20, in addition to the conveying carriage 20 with crawlers 23 as shown in the illustrated example of Fig. 9, although not shown, it can also be implemented for a conveying carriage with casters or the like.

[0015] Figures 1 to 4 show the completed bogie plate. This bogie plate is composed of a combination of two members, namely a main body 1 and a lid 10 as shown in Figure 8, and has a structure in which the lid 10 is placed on the main body 1 located at the lower part and integrated (Figure 7). The main body 1 and the lid 10 are synthetic resin molded products with a predetermined height (thickness) and are formed in a rectangular shape with substantially the same size when viewed in the planar direction. As shown in Figure 6A, the main body 1 has a hollow part 2 inside the surface side, and at the central part of the hollow part 2, for the purpose of ensuring rigidity and suppressing deflection A regular hexagon in plan view a honeycomb-shaped rib 5 is provided. Furthermore, on both outer sides in the longitudinal direction of the main body 1 sandwiching the honeycomb-shaped rib 5, large handle holes 50 are provided penetrating the main body 1 in consideration of the ease of handling as a bogie plate, and also near both outer sides of the central part in the short direction of the main body 1, small handle holes 50' are provided as through holes. Ribs 5' are provided around the handle holes 50, 50' so as to surround each handle hole 50, each 50'. And, around the edge 3 at the upper end of the outer periphery of this main body 1, a step part 4 is provided which bulges outward and curves over the entire circumference except for the four-corner attachment parts 6 described later (see Figures 2A, C, and Figure 6). This is for detachably hooking the step part 13a of the claw part 13 of the lid 10 described later to this step part 4. Also, as shown in Figure 8, attachment parts 6 are provided at the four corners of this main body 1 for attaching the handle attachment tool 22 of the handle 21 of the bogie 20 according to Figure 9. On one side in the short direction of the main body 1, a handle attachment tool 22 having substantially the same shape and size as the attachment part 6 is covered from above, and a bolt passed through the handle attachment tool 22 is passed through the bolt hole of the attachment part 6 of the main body 1 and a nut is screwed onto the tip of the bolt, and the handle attachment tool 22 is fixed to the main body 1 (illustration is omitted). In addition, in Figure 6, reference numeral 9 indicates a hooked piece for hooking a string member for restraining and hanging over the placed conveyed object, and is provided at two locations on each side of the main body 1. Also, reference numeral 8 indicates a pair of reinforcing convex parts that protrude long and are arranged in parallel in the longitudinal direction on the back surface of the main body 1.

[0016] As shown in Figure 5B, the lid 10 has a hollow portion 11 inside on the back side, and within the hollow portion 11 there is a structure that can abut against the honeycomb-shaped ribs 5 of the main body 1. A regular hexagon in plan view The honeycomb-shaped ribs 14 are arranged in the same position and shape. Furthermore, as can be clearly seen in Figures 1C and 4, a rib 14' is provided that fits into the handle holes 50 and 50' of the main body 1, in a position and shape that follows the inside of the rib 5' that is provided around the handle holes 50 and 50' of the main body 1, for the purpose of positioning the lid 10. Furthermore, as shown in Figure 5A, the surface of the lid 10 is preferably formed on the inner surface of the mounting surface 17 on the upper surface, with an anti-slip pattern forming an appropriate anti-slip portion 18. The height H1 of the lid 10 is formed lower than the height H2 of the main body 1, as shown in Figure 7 (Figure 5), so that the thickness of the lid 10 on the mounting surface 17, where the ribs 14 are provided within the hollow portion 11, does not result in noticeable sink marks. In this embodiment, the height H1 of the lid 10 is set to 8 mm, and indeed, no sink marks are noticeable on the mounting surface 17. As a result, the overall rigidity of the trolley plate is maintained by the lid 10 and the main body 1 (H1 + H2). Furthermore, an appropriate number of claws 13 are provided that protrude vertically from the lower end 12a of the outer edge 12 of the lid 10 (Figure 2B). In this embodiment, as shown in Figure 5B, there are a total of 12 claws provided in the center and on the left and right sides of each long side, and in the center and on the left and right sides of each short side, but the number and positions of these claws are not limited to this. The claw portion 13 of the lid 10 is hooked onto the stepped portion 4 of the main body 1, so that the lid 10 can be detachably attached to the main body 1 (see Figure 2). Specifically, as shown in Figure 2C, the claw portion 13 has a stepped portion 13a of the same shape that hooks onto the stepped portion 4 at the bottom of the edge 3 of the main body 1. The claw portion 13 has a tapering lower end portion 13b, indicated by the symbol d, that slopes outward from the stepped portion 13a towards the edge 12, and a shape that curves slightly upward from there towards the outside of the edge 12. The slope (symbol d) of the lower end portion 13b allows the stepped portion 13a of the claw portion 13 to smoothly enter and naturally hook onto the stepped portion 4 of the main body 1, making it easy to put the lid 10 on. In addition, the gap created by the slope d makes it easy for fingertips to grip the lower end portion 13b of the claw portion 13, making it easy to remove and attach the lid. At the same time, the honeycomb-shaped ribs 14 of the lid 10 and the honeycomb-shaped ribs 5 of the main body 1 are in contact vertically. The cross-section is a regular hexagon. The structure is formed in a honeycomb pattern to ensure rigidity (Figures 1C and 4). Even if there is a gap between the upper and lower ribs 14 and 5 when unloaded, the weight of the load causes the support surface 17 to flex and the upper and lower ribs 14 and 5 to come into contact with each other, so a slightly rough dimensional setting is acceptable. Furthermore, as shown in Figure 8, the four corners of the lid 10 have notches 15 formed to prevent interference with the handle mounting bracket 22 to which the handle 21 of the trolley 20 is attached. If the lid 10 were to have a through hole in the shape that the handle mounting bracket 22 fits into, the handle 21 could be attached to the main body 1. However, if there was a hole, the handle 21 would have to be removed each time the lid 10 was attached or detached, which would be inconvenient. Therefore, notches 15 were formed so that the lid 10 could be placed over the main body 1 without removing the handle 21, making it possible to easily attach and detach the lid 10 to the main body 1. Furthermore, because the mounting portion 6 of the main body 1 is exposed on the mounting surface due to the notch 15 on the side without the handle mounting bracket 22, resulting in an unsightly appearance, an embodiment in which an elastomer cover 24 is placed over the remaining mounting portion 6 is preferable (Figure 8). Moreover, by using elastomer, the cover 24 also provides anti-slip and shock-absorbing functions for transported objects.

[0017] Therefore, the lid 10 is placed on top of the main body 1 as described above (Figures 7 and 8), and the claw portion 13 provided on the edge 12 of the lid 10 is hooked onto the stepped portion 4 at the lower edge 3 of the main body 1 (Figure 2C), thereby combining the lid 10 and the main body 1 to create a detachable, integrated structure (Figures 3 and 4). In this case, the force that secures the lid 10 can be adjusted by increasing or decreasing the number of claws 13 on the lid 10, so that it can be removed by hand but is still securely fixed. In this embodiment, there are a total of 12 claws 13. If the lid 10 is to be fixed more firmly, it will not be easy to remove by hand, but claws 13 can be provided all around the edge 12 of the lid 10 and fitted over the main body 1. As described above, the handle attachment 22 is attached to the main body 1, and in order to make it easy to remove the lid 10, the four corners are cut out to accommodate the shape of the attachment part 6, so that the lid 10 can be placed on or removed from the main body 1 without having to remove the handle 21. Then, a handle mounting bracket 22 with a handle 21 attached is mounted on one of the mounting parts 6 on the shorter side (see Figure 8), and a cover 24 is placed over the other mounting part 6 to complete the transport trolley 20 with a handle 21 as shown in Figure 9. Although not shown in the illustration, an elastomer bumper is later inserted around the edge of the mounting part 6 to which the handle mounting bracket 22 is attached as a collision buffer. Based on the above, the upper and lower lids 10 and the hollow parts 2 and 11 of the main body 1 are provided. A regular hexagon in plan view Formed by bringing the honeycomb-shaped ribs 5 and 14 into contact with each other. The cross-section is a regular hexagon. The honeycomb structure allows for a thin lid height H1 while maintaining overall rigidity, resulting in a surface on the lid's mounting surface 17 that is less prone to sink marks, thus producing a visually appealing trolley 20. Furthermore, since the ribs 5 and 14 do not protrude from the outer surface, there is no risk of dirt getting into the ribs 5 and 14, making cleaning easier.

[0018] Reference numeral 7 in Figure 8 indicates a sound-absorbing material such as rock wool or glass wool provided in the hollow section 2. To mitigate noise during the movement of the trolley 20, it is intended to be packed into or attached to both or one of the hollow sections 2 and 11 of the main body 1 and the lid 10, respectively, to absorb vibration noise and other sounds generated from the trolley plate during movement. When a quiet transport trolley is required, an embodiment that absorbs sound in this manner is preferable.

[0019] As described above, the embodiments have been explained based on the drawings, but it should be noted that the present invention is not limited to the illustrated examples, and in addition to placing the lid 10 on top of the main body 1 to form a single unit, if it is important that no ribs protrude from the outer surface, the lid 10 may be placed on top of the main body 1 from below to form a single unit, and so on. It should be noted that the invention includes design changes and variations in application that are normally performed by those skilled in the art, as long as they do not deviate from the technical concept. [Explanation of Symbols]

[0020] 1 Main unit 2 Hollow part 3. Edges 4 Stepped section 5 Ribs 6. Mounting part 7. Sound-absorbing material 8. Reinforcement protrusions 9 Hooked piece H2 Height 10 Lid 11 Hollow part 12 Edges 12a Bottom end 13. Nail area 13a Stepped section 13b Bottom end 14 Ribs 15 Notch 17 Mounting surface 18 Anti-slip part H1 Height 20 carts 21 Handle 22 Handle mounting hardware

Claims

1. A trolley plate on which the object to be transported is placed for a transport trolley, The trolley plate is characterized in that it is composed of a main body having a hollow portion inside and a lid having a hollow portion inside, and a honeycomb-shaped rib with a regular hexagonal shape in plan view provided in the hollow portion of the lid and a honeycomb-shaped rib with a regular hexagonal shape in plan view provided in the hollow portion of the main body are in contact with each other from above and below, so that the cross-section is a honeycomb structure with a regular hexagonal shape.

2. The trolley plate according to claim 1, characterized in that a stepped portion is provided around the edge of the main body, a claw portion is provided around the edge of the lid that is hooked onto the stepped portion, and the claw portion of the lid is hooked onto the stepped portion of the main body so that the lid can be detachably attached to the main body.

3. The trolley plate according to claim 1, characterized in that the main body is provided with a mounting portion for attaching a handle attachment, and the lid is formed with a notch to prevent interference with the handle attachment.

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