A hard bottom soft body roller bag and a roller press mounting mechanism thereof
By introducing a retractable assembly and a roller pressing mechanism into the hard-bottomed soft-roller bag, the size of the bag is reduced and the rollers are easily installed, solving the problem of the large space occupied by the hard-bottomed soft-roller bag and improving space utilization efficiency.
Patent Information
- Application Number
- CN202521664934.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-03
- Estimated Expiration
- 2035-08-06
AI Technical Summary
Existing hard-bottomed soft-roller bags cannot be reduced in size when not in use, taking up a lot of space and resulting in wasted resources.
The storage bag uses an expansion and contraction assembly consisting of an L-shaped mounting bracket at the bottom and a telescopic component. The size of the storage bag can be reduced by rotating a screw to adjust the spacing of the L-shaped mounting bracket. The rollers are installed by pressing the mounting bracket onto the central hole mounting base, making them easy to disassemble and replace.
It effectively reduces the size of the storage bag, minimizes the waste of space resources, and makes it easy to store and carry.
Smart Images

Figure CN224440590U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bags and luggage, and more specifically, it relates to a hard-bottomed soft-roller bag and its roller pressing mechanism. Background Technology
[0002] Hard-bottomed soft-body wheeled bags typically refer to a type of suitcase or rolling bag that combines a hard bottom structure with a soft body design. Its characteristics include a hard bottom support, but the overall bag body is still made of relatively soft or elastic materials, thus combining the advantages of sturdiness and flexibility. This type of wheeled bag is suitable for a variety of occasions, such as shopping, travel, and going to work, and is both practical and convenient to carry.
[0003] For example, a Chinese patent announcement with publication number CN202445329U describes a trolley backpack, which includes a soft part for the shoulder strap. The soft part has a shoulder strap and a retractable trolley fixed to one side of the back. Rollers are installed at the bottom of the soft part. A hard part is connected to the side of the soft part away from the shoulder strap. The soft part and the hard part are connected by a connecting material to form a sealed bag. This utility model uses a combination of hard and soft materials as the bag body, which has a protective function for the items inside the bag. The hardware structure makes the bag aesthetically pleasing and can be used by people to store and carry items when traveling.
[0004] The backpack disclosed in the above technical solution cannot be reduced in size when it is not in use, and it will take up a lot of storage space when stored, which will waste space resources to some extent.
[0005] Therefore, a new solution is needed to address this problem. Utility Model Content
[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hard-bottomed soft-roller bag and its roller pressing mechanism, which can reduce the volume of the storage bag, effectively reduce the space occupied, and reduce the waste of space resources.
[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a hard-bottomed soft roller bag and its roller pressing mechanism, comprising:
[0008] Storage bag;
[0009] A retractable assembly is disposed at the bottom of the storage bag. The retractable assembly includes two L-shaped mounting brackets disposed at the bottom of the storage bag. Each of the two L-shaped mounting brackets is provided with two sliding grooves. The inner surface of each of the two sliding grooves is provided with a through groove. The L-shaped mounting brackets are provided with positioning holes. Two telescopic members are provided between the two L-shaped mounting brackets. The telescopic members are used to adjust the distance between the two L-shaped mounting brackets.
[0010] By adopting the above technical solution, the limitation on the hollow rod and solid rod is released by screwing the screw out of the corresponding positioning hole. The two L-shaped mounting brackets are pushed and brought closer together. One end of the solid rod and hollow rod that are rotatably connected will deflect, and the other end will drive the moving seat to move up to one end of the through groove. Screwing the screw into the corresponding positioning hole can reduce the volume of the empty storage bag, effectively reduce the space occupied, and reduce the waste of space resources.
[0011] The present invention is further configured such that: the telescopic component includes a hollow rod, a solid rod rotatably mounted on the inner side of the hollow rod, one end of the hollow rod and one end of the solid rod respectively rotatably mounted on the inner side of two sliding grooves, the other end of the hollow rod and the other end of the solid rod respectively passing through the inner side of the two sliding grooves, one end of the hollow rod and one end of the solid rod each having a rotatable seat, the two movable seats respectively sliding in two through grooves, the interior of each of the two movable seats being threadedly connected with a screw, one end of the screw passing through a positioning hole.
[0012] The present invention is further configured such that the storage bag is provided with a telescopic handle.
[0013] A roller pressing mechanism includes a central hole mounting base disposed at the bottom of an L-shaped mounting bracket and a roller disposed below the central hole mounting base. Both sides of the inner wall of the central hole mounting base are provided with inner grooves, and a pressing assembly is disposed inside the inner groove. The pressing assembly is used to press and install the roller and the central hole mounting base.
[0014] The present invention is further configured such that: the mounting assembly includes a triangular block that slides inside the inner groove and a square column fixed to the top of the roller; a spring is provided between the triangular block and the inner wall of the inner groove; one end of the triangular block extends to the inner side of the central hole mounting base; and grooves are provided on both sides of the square column.
[0015] The present invention is further configured such that: a connecting rod is fixed on one side of the triangular block, the connecting rod extends to the outside of the central hole mounting base and is fixed with an elastic lifting ring.
[0016] In summary, this utility model has the following beneficial effects:
[0017] By unscrewing the screw out of the corresponding positioning hole to release the restriction on the hollow and solid rods, the two L-shaped mounting brackets are pushed and brought closer together. One end of the solid and hollow rods will deflect, and the other end will drive the moving seat to move up along the through groove to one end of the through groove. Screwing the screw into the corresponding positioning hole will reduce the volume of the empty storage bag, effectively reducing the space occupied and reducing the waste of space resources. Attached Figure Description
[0018] Figure 1 This is a perspective view of this embodiment;
[0019] Figure 2 for Figure 1 A bottom-view split sectional view;
[0020] Figure 3 for Figure 2 Enlarged schematic diagram of part A in the middle.
[0021] Attached Figure Descriptions: 1. Storage Bag; 2. Retractable Assembly; 21. L-shaped Mounting Bracket; 22. Slide Track; 23. Through Slot; 24. Positioning Hole; 25. Hollow Rod; 26. Solid Rod; 27. Movable Seat; 28. Screw; 3. Telescopic Handle; 4. Center Hole Mounting Seat; 5. Roller; 6. Inner Groove; 7. Mounting Assembly; 71. Triangular Block; 72. Square Column; 73. Spring; 74. Groove Body; 75. Connecting Rod; 76. Elastic Lifting Ring. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings.
[0023] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.
[0024] like Figure 1-3 As shown, a hard-bottomed soft roller bag includes a storage bag 1 and a retractable assembly 2 disposed at the bottom of the storage bag 1. The storage bag 1 is provided with a telescopic handle 3. The retractable assembly 2 includes two L-shaped mounting brackets 21 disposed opposite to each other at the bottom of the storage bag 1. Each of the two L-shaped mounting brackets 21 has two sliding grooves 22. The two sliding grooves 22 are respectively disposed on two rods connected at right angles on the L-shaped mounting brackets 21. The inner surface of each of the two sliding grooves 22 is provided with a through groove 23. The L-shaped mounting brackets 21 are provided with positioning holes 24. The positioning holes 24 are located near the through grooves 23. There are two positioning holes 24. Two telescopic members are disposed between the two L-shaped mounting brackets 21. The telescopic members are used to adjust the distance between the two L-shaped mounting brackets 21.
[0025] The telescopic component includes a hollow rod 25, with a solid rod 26 rotatably mounted inside the hollow rod 25. One end of the hollow rod 25 and one end of the solid rod 26 rotatably mount the inner sides of two L-shaped mounting brackets 21 with oppositely arranged sliding grooves 22. The other ends of the hollow rod 25 and the solid rod 26 pass through the inner sides of the two sliding grooves 22. Each end of the hollow rod 25 and the solid rod 26 has a movable seat 27 rotatably mounted on it. The two movable seats 27 slide in the corresponding through slots 23 in the two sliding grooves 22. The interior of each movable seat 27 is threaded with a screw 28, one end of which passes through a positioning hole 24.
[0026] When the storage bag 1 is not in use, the screw 28 can be unscrewed from the corresponding positioning hole 24 to release the restriction on the hollow rod 25 and the solid rod 26, and the two L-shaped mounting brackets 21 can be pushed to the position between them. One end of the solid rod 26 and the hollow rod 25 will deflect, and the other end will drive the moving seat 27 to move upward along the through groove 23 until the moving seat 27 moves to one end of the through groove 23. Then, screw the screw 28 into the corresponding positioning hole 24 to reduce the volume of the empty storage bag 1, effectively reducing the space occupied and reducing the waste of space resources. When the storage bag 1 is needed, after unscrewing the screw 28 from the corresponding positioning hole 24, pull the two L-shaped mounting brackets 21 away from each other. This will deflect the hollow rod 25 and the solid rod 26 and drive the moving seat 27 to move downward along the through groove 23. Then, screw the screw 28 into the corresponding positioning hole 24 to fix the angle of the hollow rod 25 and the solid rod 26, and the storage bag 1 can be unfolded for use.
[0027] A roller pressing mechanism includes a central hole mounting base 4 disposed at the bottom of an L-shaped mounting bracket 21 and a roller 5 disposed below the central hole mounting base 4. Both sides of the inner wall of the central hole mounting base 4 are provided with inner grooves 6. A pressing assembly 7 is disposed inside the inner grooves 6. The pressing assembly 7 is used to press and install the roller 5 and the central hole mounting base 4. The pressing assembly 7 includes a triangular block 71 that slides inside the inner groove 6 and a square post 72 fixed to the top of the roller 5. The inclined surface of the triangular block 71 faces downwards. A spring 73 is disposed between the triangular block 71 and the inner wall of the inner groove 6. When the spring 73 is at its original length, one end of the triangular block 71 extends to the inner side of the central hole mounting base 4. Both sides of the square post 72 are provided with grooves 74 whose size matches that of the triangular block 71. A connecting rod 75 is fixed to one side of the triangular block 71. The connecting rod 75 extends to the outside of the central hole mounting base 4 and is fixed with an elastic lifting ring 76.
[0028] When installing roller 5, insert the groove 74 of square post 72 into the central hole mounting base 4, corresponding to the direction of triangular block 71. When square post 72 is pushed in, it will push triangular block 71 into the inner groove 6 along the inclined surface of triangular block 71 and compress spring 73 until square post 72 is fully inserted into the middle hole of central hole mounting base 4. Triangular block 71 and groove 74 correspond, and under the elastic force of spring 73, triangular block 71 will be locked into groove 74 to fix square post 72 and roller 5, thus achieving press-to-install roller 5. When roller 5 has a problem and needs to be replaced, simply pull the connecting rod 75 out of inner groove 6 through elastic lifting ring 76, thereby driving triangular block 71 to disengage from groove 74 and square post 72 can be pulled out to disassemble roller 5. Then, press the square post 72 of new roller 5 into central hole mounting base 4 to achieve installation.
[0029] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.
Claims
1. A hard-sided, soft-bodied dolly bag, characterized by, include: Storage bag (1); The retractable assembly (2) is located at the bottom of the storage bag (1). The retractable assembly (2) includes two L-shaped mounting brackets (21) located at the bottom of the storage bag (1). Each of the two L-shaped mounting brackets (21) has two sliding grooves (22). The inner surface of each of the two sliding grooves (22) has a through groove (23). The L-shaped mounting brackets (21) have positioning holes (24). Two telescopic members are provided between the two L-shaped mounting brackets (21). The telescopic members are used to adjust the distance between the two L-shaped mounting brackets (21).
2. The hard-sided, soft-bodied wheeled bag of claim 1, wherein: The telescopic component includes a hollow rod (25), with a solid rod (26) rotating inside the hollow rod (25). One end of the hollow rod (25) and one end of the solid rod (26) rotate inside two sliding grooves (22), respectively. The other end of the hollow rod (25) and the other end of the solid rod (26) pass through the inner side of the two sliding grooves (22), and one end of the hollow rod (25) and one end of the solid rod (26) are each rotatably connected to a movable seat (27). The two movable seats (27) slide in two through grooves (23), and the interior of each of the two movable seats (27) is threaded with a screw (28). One end of the screw (28) passes through a positioning hole (24).
3. The hard-sided, soft-bodied wheeled bag of claim 2, wherein: The storage bag (1) is equipped with a telescopic handle (3).
4. A roller press fitting mechanism characterized by, It includes a central hole mounting base (4) disposed at the bottom of the L-shaped mounting bracket (21) as described in claim 1 and a roller (5) disposed below the central hole mounting base (4). Both sides of the inner wall of the central hole mounting base (4) are provided with inner grooves (6). An installation component (7) is disposed inside the inner groove (6). The installation component (7) is used to press and install the roller (5) and the central hole mounting base (4).
5. The roller pressing mechanism according to claim 4, characterized in that: The mounting assembly (7) includes a triangular block (71) that slides inside the inner groove (6) and a square post (72) fixed to the top of the roller (5). A spring (73) is provided between the triangular block (71) and the inner wall of the inner groove (6). One end of the triangular block (71) extends to the inner side of the central hole mounting base (4). The square post (72) has grooves (74) on both sides.
6. The roller press fitting mechanism according to claim 5, characterized by: A connecting rod (75) is fixed to one side of the triangular block (71), and the connecting rod (75) extends to the outside of the central hole mounting base (4) and is fixed with an elastic lifting ring (76).
Citation Information
Patent Citations
Trolley backpack
CN202445329U