A manual trunk that minimizes strain on the hands and also functions as a makeshift seat for carrying additional luggage.

Abstract

For travel or business trips where luggage must be manually transported in a trunk, we offer a lightweight, durable trunk that minimizes the burden on the transporter, can quickly accommodate additional luggage, and protects items from water even in sudden rain showers. [Solution] A trunk for manually carrying luggage, which has a rectangular shape when viewed from above, and comprises a trunk body for storing luggage, four stoppered rotating wheels attached to the bottom of the four corners of the trunk body, and a removable carrying handle 6 positioned along the short front of the trunk body when viewed from above. It also has a total of two handles 4 and 5 provided on the top surface 2a of the trunk body and on the narrow front side surface 1a with the carrying handle. The trunk is equipped with four sturdy wheels, four highly waterproof side walls, and a waterproof sheet.

Description

Technical Field

[0001] The present invention relates to a user-friendly load-reducing manual trunk for carrying luggage during travel or the like.

Background Art

[0002] In a conventional two-wheel carrying trunk, a part of the weight load always rests on the hand holding the handle or the liftable manual moving handle. Also, in a conventional four-wheel carrying trunk, the manual moving handle attached to the long side of the main body as seen from above is lifted and used as needed. However, when pulling the trunk behind the body in that case, the trunk tilts slightly in the traveling direction, not only increasing the weight load on the hand but also causing severe wear on the two front wheels in contact with the ground. To avoid this, if the entire trunk is rotated 90 degrees and the trunk and handle are arranged longitudinally on the side of the body to move forward, the load applied to the front and back of the palm of the hand holding the handle is not uniform even on a slightly uneven road surface, and hand fatigue is induced in a short time.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] With two-wheeled trunks, the trunk inevitably tilts during towing, and much of the trunk's weight becomes a burden on the user's hands. In recent years, there has been a dramatic increase in easily movable four-wheeled trunks aimed at reducing the burden on the user's hands by shifting the weight load to the ground. These have addressed this issue by attaching a handle that extends vertically to the long side of the trunk when viewed from above. However, when moving the trunk behind the body, the trunk tends to tilt forward, leading to uneven wear on the front wheels and increased weight burden on the hands. Also, when moving it forward at the side of the body, uneven load is placed on the front and back of the palms, causing hand fatigue and making long-distance travel difficult. Furthermore, there was insufficient consideration for accommodating additional luggage and reducing user fatigue. Development of a trunk that can solve all of these problems. [Means for solving the problem]

[0005] The trunk of this invention is a trunk for manually carrying luggage, and as shown in Figure 1, it has a rectangular shape when viewed from diagonally above, and is characterized by comprising a trunk body for storing luggage, four wheels (7a, b, c, d) attached to the bottom of the four corners of the trunk body, and a removable carrying handle (6) along the short side of the trunk body when viewed from above.

[0006] The arrangement of the carrying handle in this invention strongly prevents the trunk from tilting when the trunk is pulled at the side of the body by holding the carrying handle. This greatly reduces the force of gravity acting on the trunk that is transmitted to the user's hand via the carrying handle. Therefore, hand fatigue for the user can be greatly reduced.

[0007] By providing handles on at least one, preferably both, of the narrow top surface and narrow sides of the trunk body (Figures 1, 4, 5), the trunk length can be selected in the direction of the body, allowing the trunk to be carried with good balance regardless of whether there is a lot of foot traffic when going up or down stairs, etc.

[0008] The second challenge, easily accommodating additional luggage, is addressed by placing a lightweight and robust additional luggage support plate on the top of the four-wheeled trunk, which has the smallest surface area among the six sides (Figures 2 and 3, 8). The additional luggage is then placed on top of this plate and secured at two points, top and bottom, with two horizontal belts facing the transport handle (Figures 4, 16, 17). Furthermore, it is secured at two points, front and back, with two vertically set belts (Figures 4, 18, 19). The vertical belts are secured by passing them through small rectangular holes in the additional luggage plate (Figures 2, 10, 12, 11, 13). This minimizes the increase in weight load on the hands, allowing the trunk to be moved easily and stably even with increased weight. When not in use, the additional luggage support plate and belts can be stored in a storage pocket inside the opening lid on the side of the trunk (Figure 2, 15). If the additional luggage support plate is used frequently, a pocket for storing it may be added to the outside of the opening lid. Figure 2 shows cross-sections of the handle rods 6a and 6b. 8 is the additional cargo support plate. Grooves of appropriate depth are cut into 8 at the locations corresponding to 6a and 6b so that the manual handles 6a and 6b can be inserted. A large rectangular hole 9 is also made in the handle area on the top surface. When cargo is placed on it or when it is used as a simple chair, the additional cargo support plate does not tilt from the horizontal, and the special fittings 16 and 17 shown in Figure 5 are used to press and fix the additional cargo support plate to the handle so that it does not slide upward. The additional cargo is further secured with belts that pass through holes 10 and 12 and 11 and 13 in Figure 2, but the edges of the holes are rounded to prevent damage to the belts. Regarding the third challenge, by lowering the luggage on this lightweight, sturdy board to the ground, setting the rotation stoppers on the four lower wheels to the stationary position, and sitting on this additional luggage support board, a simple chair function can be realized. For this reason, the four wheels must be made of a sturdy metal material. Furthermore, in order for the trunk to not deform when a weight of up to about 100 kg is applied to it at an angle, the four sides, excluding the two large sides, must have a structure that does not distort from a rectangular shape. This is solved by securely fixing the four sides with bolts to a sturdy L-shaped rod as shown in Figure 7. The fourth challenge can be addressed by either 1) making all six sides of the trunk out of waterproof material (since the four narrow sides made of metal already have waterproofing, thin metal plates can be used on the other two sides), or 2) by placing a vinyl sheet with a cut in it over the handle area, which is the appropriate size for the manual handle that is kept in the trunk pocket. [Effects of the Invention]

[0009] In recent years, there has been a dramatic increase in easily movable trunks with four wheels, designed to reduce the burden on the user's hands by shifting the weight load to the ground. These trunks have addressed this issue by attaching handles that extend vertically along the long side of the trunk when viewed from above. However, when moving the trunk behind the body, it tends to tilt forward, leading to uneven wear on the front wheels and increased weight load on the hands. Also, when moving it forward at the side of the body, uneven load is placed on the front and back of the palms, causing hand fatigue and making long-distance travel difficult. Furthermore, there has been insufficient consideration for accommodating additional luggage and reducing user fatigue. The development of a trunk that can solve all of these problems is needed. [Brief explanation of the drawing]

[0010] [Figure 1] A perspective view of the four-wheeled trunk of this invention with the carrying handle removed. [Figure 2] This diagram shows the shape of the additional luggage support plate, which is stored in the inner pocket portion 15 of the trunk's opening surface 14 to support additional luggage on the top surface of the trunk. 10, 11, 12, and 13 are holes for passing belts through. Two grooves are cut to allow the manual handles 6a and 6b to fit snugly. The additional luggage support plate is secured with manual insertion and retaining screws, consisting of 16 and 17 in Figure 5. [Figure 3] Figure 2 shows the shape of the additional luggage support plate when it is installed on the top surface of the trunk, as viewed from the side. [Figure 4]A side view of the entire trunk when additional luggage is being transported. This diagram shows how the additional luggage is secured to the transport handle and the additional luggage support plate at different positions using four belts 16, 17, 18, and 19 to ensure stable handling. [Figure 5] Fixing device for additional luggage indicator board to the trunk manual handle. It consists of a U-shaped plate 16 and a manual fixing bolt 17. The square 6 inside is the cross-section of the manual handle's rectangular rod. [Figure 6] Belt-type anti-slip devices 21, 22 for the moving handle when supporting additional luggage. [Figure 7] L-shaped corner reinforcing connecting plate to prevent trunk deformation when additional luggage or seats are used. [Modes for carrying out the invention]

[0011] Figure 1 shows the front view of the trunk when it is moving, the top view of the trunk when it is moving, the bottom view where the four wheels for movement are fixed, the side view where the trunk is opened, the trunk handles (4 and 5), the carrying handle (6) which can be removed from the 1a side, and the carrying handle (7a, 7b, and 7c) which are three of the four wheels for movement. The dashed lines indicate the zippers for opening and closing the trunk.

[0012] To accommodate additional luggage and seating, it is essential that the angle between the four cylindrical sides of the trunk (1a, 1b, 2a, and 2b shown in Figure 1) does not change significantly from 90 degrees to about 1 degree, even when a 100 kg load is applied to side 2a. For this reason, these four sides are made of lightweight yet strong aluminum or similar material of sufficient thickness, and the four two-sided connection points are reinforced with lightweight yet strong L-shaped two-sided connecting plates as shown in Figure 7. By installing these aluminum L-shaped bars, which are a few millimeters thick and about the same length as the trunk's thickness, inside the trunk and fixing the four sides to them with eight bolts each, additional luggage can be loaded without deformation of the narrow sides of the trunk, and it can support a weight of 100 kg. This is the most important factor in ensuring the long lifespan of the trunk. [Examples]

[0013] The handle for movement and the trunk handle, as well as the four wheels, can be attached to the above-mentioned Qiangwu's four-sided cylinder and can be used with a long lifespan.

[0014] By placing heavy luggage on the 1b surface side inside the trunk, when transporting the trunk, all four wheels will contact the ground, and the weight load on the hand will be extremely small without tilting forward.

[0015] When there is no additional luggage and short-distance movement is ensured, the additional luggage support plate can be taken out from the 3a surface pocket of the trunk and stored separately, and then the trunk can be used. The waterproof vinyl sheet can also be stored in the same pocket.

[0016] By using this vinyl sheet to cover the five surfaces other than the bottom surface and the additional luggage, there is no need to add a waterproof function separately. Since the bottom surface is a Qiangwu aluminum plate, the waterproof function exists automatically.

[0017] When the wheels are worn, loosen the bolts, remove the worn wheels, and replace the worn parts or replace the wheel itself with a new wheel.

[0018] The additional luggage support plate is inserted into the manual handle at two places. In order to prevent it from tilting vertically in the up and down direction and falling off even when luggage is placed, a special metal stopper is attached to the manual handle to fix it.

[0019] In most cases, additional luggage is put into a cloth bag like a rucksack and placed on the trunk. However, in order to prevent it from falling off, in the horizontal direction of movement, it is fixed with a belt in the shape of a pin-stop belt of the selected length. If this fixing belt moves up and down, the luggage binding may loosen. Therefore, a special belt up and down movement prevention stopper for the purpose of preventing the up and down movement of the belt should always be carried together with the additional luggage support plate. Also, between the additional luggage and the support plate, it is fixed with two belts that are tightened up and down through four gentle holes that do not damage the belt opened on the support plate. And move it together with the additional luggage support plate at all times. And fix it with two belts that are tightened up and down through four gentle holes that do not damage the belt opened on the support plate between the additional luggage and the support plate.

[0020] I always keep a thin waterproof plastic sheet in the trunk pocket in case I need to waterproof extra luggage. [Explanation of symbols]

[0021] 1a Side of the trunk with a handle 1b Narrow side of the trunk 2a Top of the trunk 2b Underside of the trunk 3a 3b Wide side of the trunk 4 Trunk handles 5 Trunk handle 6. Handle for moving the trunk 6a, 6b Manual handle cross-section 7abcd Four wheels under the trunk 8. Additional cargo support plate 9, 10, 11, 12, 13 Trunk handle and belt loops 14. The widest side of the trunk to open 15. Pockets attached to the inside of the trunk 16, 17, 18, 19 Additional luggage securing belts 20 Additional Baggage 21,22 Horizontal additional belt anti-slip device 23. L-shaped brackets that can securely connect the four narrow sides of the trunk. 24,25,26,27,28,29,30,31 Screw holes for fixing L-shaped brackets to 1a,b and 2a,b

Claims

1. A trunk for manually carrying luggage, characterized in that it has a rectangular shape when viewed from above, and comprises a trunk body for storing luggage, four rotating wheels with stoppers attached to the bottom of the four corners of the trunk body, and a removable carrying handle positioned along the front of the short side of the trunk body when viewed from above.

2. The trunk according to claim 1, characterized in that it is provided with a total of two handles, one on the top surface of the trunk body and the other on the narrow front side with a carrying handle.

3. An additional luggage compartment for additional luggage, configured to be securely attached to the upper surface of the trunk body. The trunk according to claim 1, characterized in that it includes a support plate and a storage pocket provided on the inner surface of the opening and closing lid of the trunk body, which is configured to easily accommodate the additional luggage support plate.

4. The trunk according to claim 3, wherein the carrying handle has a handle portion that extends horizontally to a width slightly wider than the width of the palm, and the handle portion is firmly fixed between two vertical rods that can be pulled out upward from the long side of the trunk body, and the additional luggage support plate is positioned so that it is inserted to a position that overlaps with the two vertical rods when viewed from above, the additional luggage support plate has grooves cut into it that are slightly wider than the vertical rods.

5. The aforementioned additional cargo support plate is rectangular when viewed from above, and the additional cargo support plate The trunk according to claim 3, characterized in that the length of the longer side is sufficiently shorter than the height of the side of the trunk body and is between 1 and 1.5 times the length of the longer side of the top surface of the trunk, and the length of the shorter side of the additional luggage support plate is between 1 and 2 times the length of the shorter side of the top surface of the trunk body.

6. The trunk according to claim 3, further comprising a fastener for securing the additional luggage support plate to the handle for moving.

7. The trunk according to claim 3, further comprising four reinforcing devices that reinforce the trunk body by strongly connecting the two upper and lower horizontal surfaces and the two narrow left and right vertical sides of the trunk body, so that the upper surface of the additional luggage support plate can be used as a seat for a simple chair.

8. The trunk according to claim 3, characterized in that it is equipped with a waterproof sheet that can be stored in the aforementioned storage pocket and has the minimum necessary holes to allow the carrying handle to pass through.

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