Luggage case capable of being transformed to be dragged
By setting up universal wheels and up and down structures at the bottom of the suitcase, and using the rotation of the three-head rack and the moving wheel, the problem of lifting up and down the suitcase is solved, convenient dragging is achieved, and the travel efficiency of users is improved.
Patent Information
- Application Number
- CN202421920886.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The existing suitcase needs to be picked up when going up and downstairs, which affects the normal travel of the users and lacks a convenient towing structure.
A suitcase that can be transformed towing is designed. By setting up universal wheels and upstairs structures at the bottom, the rotation of the three-head frame and the moving wheels can achieve convenient dragging of up and downstairs, and adjust the dragging posture through the pulling structure to adapt to different environments.
It realizes convenient transportation of suitcases when going up and down stairs, reduces physical energy consumption and improves the travel efficiency of users.
Smart Images

Figure CN223262454U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of luggage cases, in particular to a luggage case that can be switched and towed. Background Art
[0002] A suitcase, also known as a travel case or trolley case, is a type of luggage used to carry items when traveling. It's typically used to store clothing, personal care items, and souvenirs needed for travel. Early suitcases were made of wood or other heavy materials. With the rise of air travel, suitcases have become more lightweight, made of hard plastic or fabric. Most models also have built-in wheels for easy trolley movement. Since 2010, suitcases with four wheels have become available, allowing them to rotate 360 degrees and be easily pushed on flat ground.
[0003] Existing suitcases still have some defects in the actual production and use process: currently, suitcases are generally used for long and short distance travel such as business trips and tourism, so a large number of items can be stored inside the suitcases. However, existing suitcases lack a stair and floor structure, resulting in the need to lift the suitcase when going up and down the stairs, affecting the user's normal travel. Based on the shortcomings of the existing technology, the present invention designs a convertible towable suitcase. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a luggage case that can be switched to a towable state, which has the advantages that the luggage case can be switched to a towable state, making it convenient to go up and down stairs.
[0005] The utility model provides the following technical solution: a convertible and towable suitcase, comprising a box body, universal wheels are provided on both sides of the bottom of the box body, and up and down stair structures are provided on both sides of the bottom of the box body, and the two up and down stair structures are arranged in front of the universal wheels; the two up and down stair structures include fixed piles, one side of the two fixed piles is rotatably installed with a three-head frame, one side of the two three-head frames is installed with a connecting column, and the three-head extensions of the two three-head frames are rotatably installed with moving wheels, the interiors of the two connecting columns are installed with abutment plates, one side of the two abutment plates is installed with a spring, one end of the two springs is installed with a fixed block, the fixed block is slidably connected to the connecting column, the interiors of the two fixed blocks are rotatably installed with a rotating rod, one end of the two rotating rods is installed with a clamping block, the interiors of the two fixed piles are provided with a slot plate, and one side of the two slot plates is provided with a notch.
[0006] As a preferred technical solution of the present invention, a password lock is provided on one side of the outer surface of the box body, and an isolation bag is installed on one side of the outer surface of the box body.
[0007] As a preferred technical solution of the present invention, a handle structure is provided inside the box, and the handle structure includes a telescopic pull rod.
[0008] As a preferred technical solution of the present invention, the telescopic pull rod is slidably connected to the box body, and a rotating column is rotatably installed on the top of the telescopic pull rod.
[0009] As a preferred technical solution of the present invention, a fastening bolt is provided at the bottom of the rotating column, and the fastening bolt is rotatably connected to the telescopic pull rod.
[0010] As a preferred technical solution of the present invention, a handle body is installed on the top of the rotating column.
[0011] As a preferred technical solution of the present invention, a soft package is provided on the outer surface of the handle body.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. A convertible towable suitcase with a stair-climbing structure. Under normal conditions, the tripod frame cannot rotate, and the two lower movable wheels are on the same level as the universal wheels. When the user needs to go up or down the stairs, the user rotates the two rotating rods 90 degrees. At this time, the two side clamping blocks align with the two side notches of the clamping slot plate. At this time, the spring is not blocked. When the force is released and the spring is released, the fixed block drives the rotating rod to disengage the clamping slot plate. At this time, the tripod frame can rotate. As a result, when the user goes up or down the stairs, the tripod frame rotates according to the order of each step, thereby achieving easy going up and down the stairs, speeding up the user's passage speed, and reducing their physical exertion.
[0014] 2. This convertible towable suitcase has a handle structure. When the user is towing the suitcase, by loosening the fastening bolt, the rotating column can drive the handle body to rotate 90 degrees, and then tighten the fastening bolt again. At this time, the towing posture of the suitcase can be changed from towing from behind to towing beside the user, thereby improving the versatility of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the appearance structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the universal wheel structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the mobile wheel of the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the card slot plate of the utility model;
[0019] Figure 5This is a schematic diagram of the handle structure of the utility model.
[0020] In the figure: 1. Box body; 2. Universal wheel; 3. Up and down stair structure; 31. Fixed pile; 32. Tripod; 33. Connecting column; 34. Moving wheel; 35. Abutment plate; 36. Spring; 37. Fixed block; 38. Rotating rod; 39. Card block; 310. Card slot plate; 4. Handle structure; 41. Telescopic pull rod; 42. Rotating column; 43. Fastening bolt; 44. Handle body; 5. Combination lock; 6. Isolation bag. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] See also Figure 1-5 The two lifting frames 310 are provided with a plurality of support rods 314 on the bottom of the lifting frame 31, and a plurality of support rods 316 are provided on the bottom of the lifting frame 31.
[0023] See also Figure 1-2 A password lock 5 is provided on one side of the outer surface of the box body 1, and an isolation bag 6 is installed on one side of the outer surface of the box body 1.
[0024] The safety of the box 1 is ensured by a password lock 5. Through the provision of the isolation bag 6, some frequently taken-out articles can be placed in the isolation bag 6.
[0025] See also Figure 1 and Figure 5The interior of the box body 1 is provided with a handle structure 4, which includes a telescopic rod 41. The telescopic rod 41 is slidably connected to the box body 1, and a rotating column 42 is rotatably mounted on the top of the telescopic rod 41. A fastening bolt 43 is provided at the bottom of the rotating column 42, which is rotatably connected to the telescopic rod 41. A handle body 44 is mounted on the top of the rotating column 42. The outer surface of the handle body 44 is provided with a soft packaging.
[0026] When the user is towing, the user can loosen the fastening bolt 43 to make the rotating column 42 drive the handle body 44 to rotate 90 degrees, and then tighten the fastening bolt 43 again. At this time, the towing posture of the box body 1 can be changed from towing from behind to towing beside.
[0027] Working principle: when a convertible towable suitcase is in use, under normal conditions, the three-head frame 32 cannot rotate, and the two moving wheels 34 at the bottom are at the same level as the universal wheel 2. When the user needs to go up and down the stairs, the user can rotate the rotating rods 38 by 90 degrees by rotating the two side rods 38. At this time, the blocking blocks 39 on both sides are aligned with the notches on both sides of the slot plate 310. At this time, the spring 36 is not blocked, and when the force is released and the fixed block 37 is released, the rotating rod 38 can be driven to disengage from the slot plate 310. At this time, the three-head frame 32 can be rotated. Therefore, when the user goes up and down the stairs, the three-head frame 32 rotates in the order of each step, so that going up and down the stairs can be achieved easily. At the same time, when the user is towing, by loosening the fastening bolt 43, the rotating column 42 can drive the handle body 44 to rotate 90 degrees, and then tighten the fastening bolt 43 again. At this time, the towing posture of the box body 1 can be converted from towing from behind to walking beside.
[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A convertible towable suitcase, comprising a case (1), characterized in that: Universal wheels (2) are provided on both sides of the bottom of the box (1), and up and down building structures (3) are provided on both sides of the bottom of the box (1), and the two up and down building structures (3) are provided in front of the universal wheels (2); The two up-and-down structures (3) include fixed piles (31), a three-head frame (32) is rotatably mounted on one side of the two fixed piles (31), a connecting column (33) is mounted on one side of the two three-head frames (32), a moving wheel (34) is rotatably mounted on the three-head extension of the two three-head frames (32), a butt plate (35) is mounted inside the two connecting columns (33), a spring (36) is mounted on one side of the two butt plates (35), a fixed block (37) is mounted on one end of the two springs (36), the fixed block (37) is slidably connected to the connecting column (33), a rotating rod (38) is rotatably mounted inside the two fixed blocks (37), a clamping block (39) is mounted on one end of the two rotating rods (38), a slot plate (310) is provided inside the two fixed piles (31), and a notch is provided on one side of the two slot plates (310); A handle structure (4) is provided inside the box body (1), and the handle structure (4) comprises a telescopic pull rod (41).
2. The convertible towable suitcase according to claim 1, characterized in that: A password lock (5) is provided on one side of the outer surface of the box body (1), and an isolation bag (6) is installed on one side of the outer surface of the box body (1).
3. The convertible towable suitcase according to claim 1, characterized in that: The telescopic pull rod (41) is slidably connected to the box body (1), and a rotating column (42) is rotatably mounted on the top of the telescopic pull rod (41).
4. The convertible towable suitcase according to claim 3, characterized in that: A fastening bolt (43) is provided at the bottom of the rotating column (42), and the fastening bolt (43) is rotatably connected to the telescopic pull rod (41).
5. The convertible towable suitcase according to claim 4, characterized in that: A handle body (44) is mounted on the top of the rotating column (42).
6. The convertible towable suitcase according to claim 5, characterized in that: The outer surface of the handle body (44) is provided with a soft package.