Portable high-strength PP draw-bar box

Abstract

The utility model relates to the technical field of draw-bar boxes, and discloses a portable high-strength PP draw-bar box which comprises a box body, the bottom of the box body is fixedly connected with a connecting plate, the bottom of the connecting plate is fixedly connected with a connecting block, one side of the outer wall of the connecting block is rotationally connected with a knob, the interior of the knob is in threaded connection with a threaded rod, and the threaded rod is in threaded connection with the connecting block. A limiting ring is rotatably connected to the outer wall of the threaded rod, a third limiting block is fixedly connected to the outer wall of the threaded rod, the outer wall of the third limiting block is slidably connected to the interior of the limiting ring, rolling wheels are fixedly connected to the bottom of a fixing block, and a pulling assembly is arranged at the top of the box body. According to the portable high-strength PP draw-bar box disclosed by the utility model, the effect that the damaged roller can be quickly disassembled when the roller is damaged is achieved, and the problems that when the roller of the existing portable high-strength PP draw-bar box is damaged, the roller can be replaced only by disassembling the fixing devices, a specific tool and a certain time are needed, and inconvenience is brought to a traveler are solved; and the replacement convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley cases, in particular to a portable high-strength PP trolley case. Background Art

[0002] With the improvement of people's living standards and the increase in international travel, the requirements for suitcases are getting higher and higher. Traditional metal or plastic trolley cases have disadvantages such as being too heavy and easy to damage, which cannot meet the needs of modern travelers. Therefore, the advent of portable high-strength PP trolley cases fills this gap in the market. This type of suitcase not only uses lightweight PP materials, but also has a carefully optimized structural design with excellent compression and wear resistance. Its outer shell is made of high-strength material, which can effectively resist collisions and impacts and protect the safety of items in the box.

[0003] The main structures of existing portable high-strength PP trolley cases include an outer shell, internal compartments, rollers, a telescopic trolley and other auxiliary accessories. The outer shell is the main structure of the entire trolley case and is usually made of high-strength PP material with excellent compression resistance, wear resistance and impact resistance. This material is light and strong, and can effectively protect the items in the case from external impact and damage. The internal compartments are usually designed as multi-layer or adjustable structures so that travelers can effectively organize and sort their luggage. The rollers are an important part of the portable trolley case and are usually made of wear-resistant and flexible materials to ensure that the case can slide smoothly on the ground. These rollers are usually installed at the bottom of the case and are tightly combined with the case body, providing a stable and smooth moving experience.

[0004] However, the existing portable high-strength PP trolley case rollers are fixed to the bottom of the case by screws or other fixing devices. When the rollers are damaged, these fixing devices must be removed to replace the rollers, which requires specific tools and a certain amount of time, causing inconvenience to travelers. Therefore, a portable high-strength PP trolley case is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a portable high-strength PP trolley case, which aims to improve the problem in the prior art that when the rollers of the existing portable high-strength PP trolley case are damaged, these fixing devices must be disassembled to replace the rollers, which requires specific tools and a certain amount of time, causing inconvenience to travelers.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a portable high-strength PP trolley case, comprising a case body, a connecting plate fixedly connected to the bottom of the case body, a connecting block fixedly connected to the bottom of the connecting plate, a knob rotatably connected to one side of the outer wall of the connecting block, a threaded rod threadedly connected to the inner part of the knob, a limiting block one fixedly connected to the outer wall of the connecting block, a fixed block slidably connected to the outer wall of the limiting block one, a limiting block two fixedly connected to the outer wall of the threaded rod, a limiting block two outer wall slidably connected to the inside of the limiting block one, a limiting ring rotatably connected to the outer wall of the threaded rod, a limiting block three fixedly connected to the outer wall of the threaded rod, a limiting block three outer wall slidably connected to the inside of the limiting ring, a roller fixedly connected to the bottom of the fixed block, and a pulling assembly is provided on the top of the case body;

[0007] As a further description of the above technical solution: the pulling assembly includes a handle and a grip, the handle is slidably connected to the inside of the box, and the bottom of the grip is rotatably connected to the top of the box;

[0008] As a further description of the above technical solution: a groove 1 is provided inside the box body, and a hook is rotatably connected to one side of the outer wall of the box body;

[0009] As a further description of the above technical solution: a hinge 1 is fixedly connected inside the box;

[0010] As a further description of the above technical solution: a groove 2 is provided inside the box body, and one end of the hinge 1 is fixedly connected inside the groove 2;

[0011] As a further description of the above technical solution: the other end of the second groove is fixedly connected to a table top, the interior of the box is fixedly connected to a hinge 2, and one end of the hinge 2 is fixedly connected to the interior of the second groove;

[0012] As a further description of the above technical solution: the other end of the second groove is fixedly connected to the limit plate, the interior of the box is provided with a third groove, the interior of the box is rotatably connected to the limit plate, and the outer wall of the limit plate is rotatably connected to the interior of the third groove;

[0013] As a further description of the above technical solution: a shift block is fixedly connected to one side of the outer wall of the limit plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, through the cooperation among the connecting block, the knob, the threaded rod, the limit block 1, the limit block 2, the fiber ring, the limit block 3 and the fixed block, the damaged roller can be quickly disassembled when the roller is damaged, which improves the existing portable high-strength PP trolley case. When the roller is damaged, these fixing devices must be disassembled to replace the roller, which requires specific tools and a certain amount of time, causing inconvenience to travelers, and improves the convenience of replacement.

[0016] 2. In the utility model, through the coordination between the table top, hinge 1, hinge 2, limit plate and limit disk, the table top can be unfolded when needed to provide a temporary working space, thus solving the problem that it is difficult for travelers to find a suitable dining or working platform during travel, especially on vehicles or in waiting rooms, thereby improving the practicality of the suitcase. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of a portable high-strength PP trolley case proposed by the utility model;

[0018] Figure 2 This is a schematic structural diagram of the wheels of a portable high-strength PP trolley case proposed by the utility model;

[0019] Figure 3 The utility model is a schematic structural diagram of a limit plate of a portable high-strength PP trolley case.

[0020] Legend:

[0021] 1. Box body; 2. Connecting plate; 3. Connecting block; 4. Knob; 5. Threaded rod; 6. Limit block 1; 7. Limit block 2; 8. Limit ring; 9. Limit block 3; 10. Fixed block; 11. Roller; 12. Handle; 13. Handle; 14. Hook; 15. Groove 1; 16. Table top; 17. Hinge 1; 18. Hinge 2; 19. Limit plate; 20. Groove 2; 21. Groove 3; 22. Limit plate; 23. Dial block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1 - Figure 3, The utility model provides an embodiment: a portable high-strength PP trolley case, comprising a case body 1, a connecting plate 2 is fixedly connected to the bottom of the case body 1, a connecting block 3 is fixedly connected to the bottom of the connecting plate 2, a knob 4 is rotatably connected to one side of the outer wall of the connecting block 3, a threaded rod 5 is threadedly connected to the inner part of the knob 4, a limiting block 6 is fixedly connected to one side of the outer wall of the connecting block 3, the outer wall of the limiting block 6 is slidably connected to a fixed block 10, the outer wall of the threaded rod 5 is fixedly connected to the limiting block 2 7, the outer wall of the limiting block 27 is slidably connected to the inside of the limiting block 1 6, the outer wall of the threaded rod 5 is rotatably connected to a limiting ring 8, the outer wall of the threaded rod 5 is fixedly connected to the limiting block 3 9, the outer wall of the limiting block 3 9 is slidably connected to the inside of the limiting ring 8, a roller 11 is fixedly connected to the bottom of the fixed block 10, and a pulling component is provided on the top of the case body 1;

[0024] Specifically, when using the portable high-strength PP trolley case, when the roller 11 needs to be replaced, first turn the knob 4, then turn the knob 4 The rotation of the knob 4 will drive the threaded rod 5 to move to the right. It is worth noting that when the knob 4 is rotated, the threaded rod 5 only moves but does not rotate. The reason is that a limit block 2 7 is set in the middle of the threaded rod 5, and a groove is opened inside the limit block 1 6. This groove can limit the rotation of the limit block 2 7, and then limit the rotation of the threaded rod 5, so that the threaded rod 5 can only move. After the threaded rod 5 moves to the right for a distance, the limit ring 8 is rotated. A groove and a hole are opened inside the limit ring 8. The groove is used to fix the fixing block 10, and the hole is convenient for removing the limit ring 8, and they are perpendicular to each other. Therefore, after the limit ring 8 is rotated ninety degrees, the fixing block 10 and the roller 11 can be removed. A square hole is opened inside the fixing block 10, and its size is exactly consistent with a section of a square block on the limit block 1 6 to prevent the fixing block 10 from rotating. After removing the fixing block 10 and the roller 11, the new one is installed on the limit block 1 6, and then the limit block 3 9 is installed and fixed to complete the replacement.

[0025] Reference Figure 1 - Figure 3 The pulling assembly includes a handle 12 and a handle 13, wherein the handle 12 is slidably connected to the inside of the box body 1, and the bottom of the handle 13 is rotatably connected to the top of the box body 1;

[0026] Specifically, when using the portable high-strength PP trolley case, the traveler can pull the handle 12 or the grip 13 to move the portable high-strength PP trolley case, and then cooperate with the rollers 11 to easily move the trolley case.

[0027] Reference Figure 1 - Figure 3A groove 15 is provided inside the box body 1, a hook 14 is rotatably connected to one side of the outer wall of the box body 1, a hinge 17 is fixedly connected to the inside of the box body 1, a groove 20 is provided inside the box body 1, one end of the hinge 17 is fixedly connected to the inside of the groove 20, and the other end of the groove 20 is fixedly connected to the table board 16, a hinge 2 is fixedly connected to the inside of the box body 1, one end of the hinge 18 is fixedly connected to the inside of the groove 20, and the other end of the groove 20 is fixedly connected to the limiting plate 19, a groove 3 21 is provided inside the box body 1, a limiting disk 22 is rotatably connected to the inside of the box body 1, the outer wall of the limiting disk 22 is rotatably connected to the inside of the groove 3 21, and a shift block 23 is fixedly connected to one side of the outer wall of the limiting disk 22;

[0028] Specifically, when using the portable high-strength PP trolley case and the traveler needs a temporary working space, the limit plate 22 can be rotated. A ninety-degree missing corner is provided in the limit plate 22. After the missing corner is rotated to the corresponding corner of the table board 16, the table board 16 is unfolded. When the table board 16 is rotated to a horizontal position, the limit plate 19 is unfolded to both sides of the trolley case. Limit plates 19 are provided on both sides of the groove 20. After being unfolded, the limit plate 19 can support the table board 16 and provide the traveler with a usable platform for work or dining, etc. When the hook 14 is not in use, it can be stored in the groove 15.

[0029] Working principle: When using the portable high-strength PP trolley case and need to replace the roller 11, first turn the knob 4, and then the rotation of the knob 4 drives the threaded rod 5 to move to the right. At this time, the threaded rod 5 drives the limit block three 9 to move to the right. At this time, turn the limit ring 8 ninety degrees, and then drive it to move to the right, remove the limit ring 8, and then remove the roller 11. Then, reinsert the fixing block 10 on the new roller 11 into the limit block 1 6. Finally, put the limit ring 8 on the threaded rod 5, rotate it to the initial position, and turn the knob 4 to fix it. When a temporary working space is needed in a travel environment, the two limit plates 22 can be rotated separately, and then the table board 16 can be unfolded. Then, the limit plate 19 can be unfolded to both sides to support the table board 16. At this time, temporary work can be performed on the table board 16.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable high-strength PP trolley case, comprising a case body (1), characterized in that: The bottom of the box body (1) is fixedly connected to a connecting plate (2), the bottom of the connecting plate (2) is fixedly connected to a connecting block (3), one side of the outer wall of the connecting block (3) is rotatably connected to a knob (4), the inside of the knob (4) is threadedly connected to a threaded rod (5), one side of the outer wall of the connecting block (3) is fixedly connected to a limiting block 1 (6), the outer wall of the limiting block 1 (6) is slidably connected to a fixed block (10), the outer wall of the threaded rod (5) is fixedly connected to a limiting block 2 (7), the outer wall of the limiting block 2 (7) is slidably connected to the inside of the limiting block 1 (6), the outer wall of the threaded rod (5) is rotatably connected to a limiting ring (8), the outer wall of the threaded rod (5) is fixedly connected to a limiting block 3 (9), the outer wall of the limiting block 3 (9) is slidably connected to the inside of the limiting ring (8), the bottom of the fixed block (10) is fixedly connected to a roller (11), and a pulling component is provided at the top of the box body (1).

2. The portable high-strength PP trolley case according to claim 1, characterized in that: The pulling assembly comprises a handle (12) and a grip (13); the handle (12) is slidably connected inside the box body (1), and the bottom of the grip (13) is rotatably connected to the top of the box body (1).

3. A portable high-strength PP trolley case according to claim 2, characterized in that: A groove (15) is provided inside the box body (1), and a hook (14) is rotatably connected to one side of the outer wall of the box body (1).

4. The portable high-strength PP trolley case according to claim 3, characterized in that: A hinge (17) is fixedly connected inside the box body (1).

5. The portable high-strength PP trolley case according to claim 4, characterized in that: A second groove (20) is provided inside the box body (1), and one end of the first hinge (17) is fixedly connected inside the second groove (20).

6. The portable high-strength PP trolley case according to claim 5, characterized in that: The other end of the second groove (20) is fixedly connected to a table top (16), the interior of the box body (1) is fixedly connected to a second hinge (18), and one end of the second hinge (18) is fixedly connected to the interior of the second groove (20).

7. The portable high-strength PP trolley case according to claim 6, characterized in that: The other end of the second groove (20) is fixedly connected to the limit plate (19); a third groove (21) is provided inside the box body (1); the inside of the box body (1) is rotatably connected to the limit plate (22); and the outer wall of the limit plate (22) is rotatably connected to the inside of the third groove (21).

8. The portable high-strength PP trolley case according to claim 7, characterized in that: A shifting block (23) is fixedly connected to one side of the outer wall of the limiting plate (22).

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