Suitcase and cart trolley

Abstract

Bringing dirty casters from suitcases and other luggage into a room can stain the floor. While measures such as automatic caster cleaning have been implemented in the past, it has been difficult to completely prevent caster dirt from accumulating. [Solution] A trolley characterized by having one caster section on the bottom and four caster holder sections with two rod fixing sections that open at 90 degrees on the bottom or side, two side rod sections that connect the caster holder sections using the rod fixing sections, one front rod section that connects the caster holder sections using the rod fixing sections, and one back rod section that connects the caster holder sections using the rod fixing sections, makes it possible to effectively solve the problem of dirt adhering to the casters soiling the floor surface of the room.

Description

Background Art

[0001] The present invention relates to a trolley attached to a suitcase or a cart.

[0002] In recent years, suitcases and carts are widely used in various scenes such as travel, commuting, and delivery. In particular, in order to facilitate their movement, it is common to attach casters. As a result, even heavy luggage can be moved by the user without applying force. However, when using casters, it is inevitable that foreign substances such as mud, dirt, sand, and dust adhere to them from roads, paved roads, gravel roads, wet road surfaces on rainy days, etc.

[0003] If a suitcase or cart with such dirty casters is brought into a room as it is, there is a problem that the floor surface will be soiled. In particular, in places where cleanliness is required, such as homes, offices, and commercial facilities, the dirt adhering to the casters may cause problems in terms of hygiene. For this reason, it is often necessary to take the trouble to clean the casters or use a cover to protect the casters themselves. However, these methods often lack simplicity or lead to soiling of the user's hands. In addition, when lifting a suitcase or cart, the cover for protecting the casters themselves may fall off.

[0004] In the above-mentioned background art, there is a need for a technology that can effectively solve the problem that the dirt adhering to the casters of suitcases and carts soils the indoor floor surface. The prior art has taken measures such as cleaning the casters or attaching a dedicated cover, but these are all time-consuming for the user, and there is also a problem that it is difficult to completely prevent the dirt on the casters.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] For example, Patent Document 1 describes how to prevent dirt from accumulating on the casters of suitcases and carts by using a cleaning roller.

[0007] The invention in question has a complex structure, and as such, it is difficult to clean completely, making it challenging to remove dirt such as mud that has absorbed moisture.

[0008] Furthermore, the invention described in Patent Document 2 involves wrapping a shape memory alloy around the caster's tire to cover it, preventing dirt from accumulating on the casters of suitcases and carts.

[0009] This invention is also a type of dirt-preventing cover, but even though it is made of shape memory alloy, installation is not easy and is very troublesome for the user. [Means for solving the problem]

[0010] To solve the aforementioned problems, the invention of claim 1 is a suitcase and cart trolley, which has a polygonal prism shape, a frustoconical polygon shape, a cylindrical shape, a frustoconical shape, or a combination thereof, with an open top surface, and comprises four caster holder parts, each having one caster part on the bottom surface and two rod fixing parts that open at 90 degrees on the bottom surface or side surface, two side rod parts that connect the caster holder parts using the rod fixing parts, one front rod part that connects the caster holder parts using the rod fixing parts, and one back rod part that connects the caster holder parts using the rod fixing parts, wherein the four caster holder parts form the corners, the side rod parts form the right and left sides, the front rod part forms the top side, and the back rod part forms the bottom side, and the overall shape is rectangular.

[0011] Furthermore, the inventions of claims 2 to 4 are suitcases and cart trolleys according to claim 1, characterized in that the side rod portion, the front rod portion, or the back rod portion have various structures that allow their overall length to be extended or retracted. [Effects of the Invention]

[0012] According to the above invention, even when bringing a suitcase into a room, the problem of dirt adhering to the casters soiling the floor surface indoors can be effectively solved by placing the suitcase and cart on the trolley according to the present invention, without having to clean the casters each time. [Brief explanation of the drawing]

[0013] [Figure 1] This is an external perspective view of a suitcase and cart trolley (hereinafter referred to as "trolley 1") according to an embodiment of the present invention. [Figure 2] These are an upper perspective view, a side view, and a lower perspective view of the caster holder portion 10 of the trolley 1 according to an embodiment of the present invention. [Figure 3] A downward perspective view showing the front rod portion 60 and side rod portion 80 inserted into the caster holder portion 10 of the trolley 1 according to an embodiment of the present invention. [Figure 4] This is an external perspective view of a trolley 1 according to an embodiment of the present invention, with a belt connection portion 81 attached to the side rod portion 80 and a belt connection portion 91 attached to the side rod portion 90. [Figure 5] This is an external perspective view showing the side rod portion 90, which is part of Embodiment 1 of the trolley 1 according to the present invention, being rotated and extended, and the side rod portion 80 being rotated and shortened. [Figure 6] This is an external perspective view showing how the overall length of the side rod portion 80 and side rod portion 90, which are part of Embodiment 2 of the trolley 1 according to the present invention, is variable due to a plurality of stud holes and protrusions. [Figure 7] This is an external perspective view showing how the trolley 1 according to an embodiment of the present invention has a connecting portion 82 attached to the side rod portion 80 and a connecting portion 92 attached to the side rod portion 90, making the overall length variable. [Figure 8] The perspective view of the exterior with a belt B wound around the cart 1 according to an embodiment of the present invention, where a belt connection portion 81 is provided on the side rod portion 80 and a belt connection portion 91 is provided on the side rod portion 90. [Figure 9] The perspective view of the exterior showing the step diagram of placing the cart C1 on the cart 1 according to an embodiment of the present invention. [Figure 10] The perspective view of the exterior showing the step diagram of placing the cart C1 on the cart 1 according to an embodiment of the present invention. [Figure 11] The perspective view of the exterior showing the step diagram of placing the cart C2 on the cart 1 according to an embodiment of the present invention. [Figure 12] The perspective view of the exterior showing the step diagram of placing the cart C2 on the cart 1 according to an embodiment of the present invention.

Mode for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiments are examples for explaining the present invention and are not intended to limit the present invention only to those embodiments. Also, the present invention can be variously modified without departing from its gist. Further, the same reference numerals are given to the same components in each drawing as much as possible, and duplicate explanations are omitted.

[0015] <Embodiment> The cart 1 according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view of the exterior of a suitcase and cart (hereinafter referred to as "cart 1") according to an embodiment of the present invention, FIG. 2 is a) an upper perspective view, b) a side view, and c) a lower perspective view of the caster holder portion 10 of the cart 1 according to an embodiment of the present invention, and FIG. 3 is a lower perspective view of the caster holder portion 10 of the cart 1 according to an embodiment of the present invention with the front rod portion 60 and the side rod portion 80 inserted.

[0016] As shown in Fig. 1, the carriage 1 includes four caster holder parts 10, 20, 30, and 40 whose structures will be described later, a side rod part 80 connecting the caster holder parts 10 and 30, a side rod part 90 connecting the caster holder parts 20 and 40, a front rod part 60 connecting the caster holder parts 10 and 20, and a back rod part 70 connecting the caster holder parts 30 and 40. Taking the caster holder parts 10, 20, 30, and 40 as corners, with the side rod part 80 on the right side, the side rod part 90 on the left side, the front rod part 60 on the upper side, and the back rod part 70 on the lower side, it forms a rectangular shape as a whole. The front rod part 60, the back rod part 70, the side rod part 80, and the side rod part 90 will be described later. They are telescopic and the rectangular shape can be freely deformed. In the figure, the front rod part 60, the back rod part 70, the side rod part 80, and the side rod part 90 are cylindrical, but they can also be polygonal prisms, and the shape is not defined.

[0017] As shown in Fig. 2, the caster holder part 10 has a triangular prism shape with an open top surface, and one caster part 11 is arranged on the bottom surface, and two rod fixing parts 12 and 13 that open at 90 degrees are arranged on the bottom surface. In the figure, it is a right-angled isosceles triangular prism with rounded corners, but it doesn't have to be a triangular prism, and it can be a polygonal prism, or a frustum of a polyhedron, a cylinder, a frustum of a cone, or a composite of them. Of course, as shown in the figure, the corners of the polygonal prism may be curved without vertices. In the figure, two rod fixing parts 12 and 13 are arranged on the bottom surface of the caster holder part 10, but they can also be arranged on the side surface of the caster holder part 10. Also, the shapes of the caster holder parts 20, 30, and 40 are preferably the same, but they can also have different shapes.

[0018] As shown in Figure 3, the two rod fixing parts 12 and 13 located on the bottom or side of the caster holder part 10 are used to insert and fix the front rod part 60 and the side rod part 80, as shown in the figure. Similarly, although not shown, the two rod fixing parts 22 and 23 located on the bottom or side of the caster holder part 20 are used to insert and fix the front rod part 60 and the side rod part 90, the two rod fixing parts 32 and 33 located on the bottom or side of the caster holder part 30 are used to insert and fix the back rod part 70 and the side rod part 80, and the two rod fixing parts 42 and 43 located on the bottom or side of the caster holder part 40 are used to insert and fix the back part 70 and the side rod part 90.

[0019] Furthermore, the side rod sections 80 and 90, the front rod section 60, and the back rod section 70 can be freely extended and retracted. The method of extension and retraction is not specified, but for example, as shown in Figure 5, the side rod section 90 may be rotated in the r1 direction, which is perpendicular to the axial direction, to extend it in the c1 direction, or the side rod section 80 may be rotated in the opposite direction, the r2 direction, which is perpendicular to the axial direction, to shorten it in the c2 direction.

[0020] Another method of extension and retraction is to have a structure in which the side rod sections 80 and 90, the front rod section 60, or the back rod section 70 each consist of two rods of different diameters, with a stud hole section 800 to 805 or a stud hole section 900 to 905 provided on the larger diameter side, and a projection section 810 or 910 provided on the smaller diameter side, thereby allowing the overall length to be varied.

[0021] As a further method of extension and retraction, as shown in Figure 7, the side rod sections 80 and 90, the front rod section 60, or the back rod section 70 consists of two rods and connecting sections 82, 92, 62, and 72 that connect the two rods, and the overall length may be variable depending on the connection position of the connecting sections 82, 92, 62, and 72. The connecting sections 82 and 92 may also serve as belt connecting sections 81 and 91, as shown in Figure 4.

[0022] Furthermore, as shown in Figure 8, belt connection parts 81 and 91 may be attached to the opposing side rod parts 90 and 80, so that they can be connected by belt B via belt connection parts 81 and 91.

[0023] <Implementation Method 1> Next, using Figures 9 and 10, we will show an implementation method for placing the cart C1 on the trolley 1 according to an embodiment of the present invention.

[0024] (Step S10) Next, as shown in Figure 9, the side rods 80 and 90, the front rod 60, or the back rod 70 of the trolley 1 are extended or retracted to match the size of cart C1, and the casters C10, C20, C30, and C40 of C1 are placed on the caster holders 10, 20, 30, and 40.

[0025] (Step S11) Next, as shown in Figure 10, the cart C1 is placed on the trolley 1, and the caster parts 11, 21, 31, and 41 make contact with the floor instead of the casters C10, C20, C30, and C40 of C1. This makes it possible to move the cart indoors without the dirt attached to the casters C10, C20, C30, and C40 soiling the floor inside the room.

[0026] <Implementation Method 2> Next, using Figures 11 and 12, we will show an implementation method for placing the cart C2 on the trolley 1 according to an embodiment of the present invention.

[0027] (Step S20) Next, as shown in Figure 11, the side rods 80 and 90, the front rod 60, or the back rod 70 of the trolley 1 are extended or retracted to match the size of cart C2, and the casters C10, C20, C30, and C40 of C2 are placed on the caster holders 10, 20, 30, and 40.

[0028] (Step S21) Next, as shown in Figure 12, the cart C2 is placed on the trolley 1, and the caster parts 11, 21, 31, and 41 of C2 make contact with the floor instead of the casters C10, C20, C30, and C40 of C2. This makes it possible to move the cart indoors without the dirt attached to the casters C10, C20, C30, and C40 soiling the indoor floor. [Explanation of symbols]

[0029] 1. Dolly for suitcases and carts 10 Caster holder section 11 Caster section 12 Rod fixing part 13 Rod fixing part 20 Caster holder section 21 Caster Section 22 Rod fixing part 23 Rod fixing part 30 Caster holder section 31 Caster section 32 Rod fixing part 33 Rod fixing part 40 Caster holder section 41 Caster section 42 Rod fixing part 43 Rod fixing part 60 Front rod section 62 Connection part 70 Back rod section 72 Connection part 80 Side rod section 81 Belt connection part 82 Connection part 90 Side rod section 91 Belt connection part 92 Connection part

Claims

1. A polygonal prism, frustoconical pyramidal, cylindrical, frustoconical, or composite of these shapes with an open top, comprising four caster holder sections, each having one caster section on the bottom and two rod fixing sections on the bottom or side that open at 90 degrees, The caster holder portion is connected to two side rod portions using the rod fixing portion, The caster holder sections are connected to each other using the rod fixing section, and a single front rod section is also connected to the caster holder section. The caster holder section is connected to the other using the rod fixing section, and a single back rod section is connected to the other. Equipped with, With the four caster holder sections as corners, the side rod sections as the right and left sides, the front rod section as the top side, and the back rod section as the bottom side, the overall shape is rectangular. A suitcase and cart trolley characterized by these features

2. The side rod portion, the front rod portion, or the back rod portion are, The overall length expands and contracts by rotating perpendicularly in the axial direction. Suitcase and cart trolley according to feature 1

3. The side rod portion, the front rod portion, or the back rod portion are, It consists of two rods of different diameters, with multiple small holes on the larger diameter side and protrusions on the smaller diameter side, allowing for variable overall length. Suitcase and cart trolley according to feature 1

4. The side rod portion, the front rod portion, or the back rod portion are, Each consists of two rods and a connecting part that connects the two rods, and the overall length is variable depending on the connection position of the connecting part. Suitcase and cart trolley according to feature 1

5. The aforementioned side rod portion is A belt connection portion that can be connected to the opposing side rod portions by a belt, Suitcase and cart trolley according to claim 1, characterized by comprising

6. If the caster holder portion is polygonal columnar or frustoconical, The corners of a polygonal prism or truncated polygon are curved and do not have vertices. Suitcase and cart trolley according to feature 1

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