Carbon fiber composite draw-bar box
By using springs and a pull rod for auxiliary limiting in the carbon fiber composite trolley case, combined with the magnetic attraction of the rotating plate and the fixing block, as well as the locking block, the problem of the trolley case being unable to close due to a damaged combination lock is solved, achieving a tight fit between the lid and the case body, ensuring normal use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU QIANLV INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-08
AI Technical Summary
The combination locks on existing carbon fiber composite suitcases are damaged by bumps during transport, causing the suitcases to fail to close properly and affecting their use.
A spring and a pull rod are used to further limit the lid, and the magnetic attraction of the rotating plate and the fixing block, as well as the locking block, ensure that the lid fits tightly with the box body. The limiting effect can be adjusted by adjusting the screw.
It reduces the possibility of the suitcase failing to close properly due to a damaged combination lock, improves the tight fit between the lid and the body, and ensures the suitcase functions normally.
Smart Images

Figure CN224206322U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of trolley case technology, specifically to a carbon fiber composite trolley case. Background Technology
[0002] A rolling suitcase is a portable suitcase equipped with a pull rod and wheels. It is designed to reduce the burden of travel and can be pulled by the pull rod and casters. It is adaptable to various terrains such as flat ground and stairs. Its internal structure includes compartments, mesh pockets and X-shaped fixing straps to improve the efficiency of sorting items.
[0003] There are many types of rolling suitcases on the market, among which carbon fiber composite rolling suitcases are very popular. Carbon fiber is a high-performance material with characteristics such as light weight, high strength, and corrosion resistance. Carbon fiber composite materials combine the advantages of carbon fiber with other materials (such as resin) to further improve performance.
[0004] However, most carbon fiber composite suitcases use combination locks for locking. If the combination lock is damaged during the journey, the suitcase will not be able to close properly, which will affect the use of the carbon fiber composite suitcase. Utility Model Content
[0005] The purpose of this utility model is to provide a carbon fiber composite trolley case to solve the problem mentioned in the background art that if the combination lock of the existing carbon fiber composite trolley case is damaged by bumps during the journey, the trolley case will not be able to close properly, which will affect the use of the carbon fiber composite trolley case.
[0006] To achieve the above objectives, the first aspect of this utility model provides a carbon fiber composite trolley case, comprising:
[0007] The box body and lid are connected by hinges. Both sides of the box body are equipped with sleeve plates. Inside the sleeve plates, a sliding rod is slidably installed via a spring. One end of the sliding rod extends out of the sleeve plate and a handle is fixedly installed at the other end of the sliding rod. The handle fits against the surface of the lid. Both ends of the box body are equipped with adjustment components for adjusting the position of the sleeve plates.
[0008] Furthermore, the adjusting component includes a fixed plate, which is fixedly connected to the outside of the housing. An adjusting plate is slidably installed on the outside of the fixed plate. A screw is rotatably installed on the other end of the adjusting plate via a bearing. A connecting plate is fixedly connected to the outside of the housing at the other end of the fixed plate. The screw passes through the interior of the connecting plate and is threadedly connected to the connecting plate.
[0009] Furthermore, several balls are rolled on the top, bottom, and sides of the slide bar, and the balls are rolled in connection with the inner wall of the sleeve plate.
[0010] Furthermore, connecting blocks are provided on both sides of the box at the bottom of the fixed plate. A rotating plate is fixedly installed on one end of the connecting block, and fixed blocks are fixedly connected to both sides of the box cover. The rotating plate and the fixed block are interlocked internally.
[0011] Furthermore, a magnet is fixedly installed inside the fixing block, and an iron block is attracted to the top of the magnet. The top of the iron block is fixedly connected to the surface of the rotating plate.
[0012] Furthermore, rotating blocks are slidably installed on both sides of the box via springs, and the outer side of the rotating blocks is rotatably connected to the connecting blocks. Locking blocks are fixedly installed on both sides of the box and the box cover, and the locking blocks are in contact with the top of the rotating plate.
[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0014] 1. This utility model provides a carbon fiber composite trolley case. By setting a second spring, the trolley handle can be rotated and engaged in the groove of the case lid, thereby providing auxiliary restriction on the position of the case lid at one end of the case body. This reduces the possibility of the trolley case failing to close properly due to damage to the combination lock. Furthermore, depending on the elasticity of the second spring and the different thicknesses of the case lid, the position of the sleeve plate can be adjusted by rotating the screw, thereby improving the limiting effect on the case lid.
[0015] 2. This utility model provides a carbon fiber composite trolley case. In this embodiment, by rotating the rotating plate to the bottom of one end, a part of the rotating plate is inserted into the interior of the fixing block. By utilizing the mutual attraction between the iron block and the magnet, and by using the locking block to limit the rotating plate from the top, the possibility of the rotating plate separating from the fixing block can be reduced, thereby improving the tightness of the fit between the case lid and the case body, and further improving the limiting effect of the case lid. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] Figure 1 This is a perspective view of the present utility model;
[0018] Figure 2 This is a perspective view of the second embodiment of the hand lever of this utility model;
[0019] Figure 3 This is a partial structural diagram of the sleeve plate of this utility model;
[0020] Figure 4 This is a partial exploded view of the adjusting plate of this utility model;
[0021] Figure 5 This is a partial cross-sectional structural diagram of the fixing block of this utility model;
[0022] Figure 6 This is a partial structural diagram of the rotating plate of this utility model.
[0023] In the diagram: 1. Box body; 2. Box cover; 4. Adjusting plate; 5. Sleeve plate; 6. Slide rod; 7. Hand lever; 8. Screw; 9. Rotating plate; 10. Fixing plate; 11. Magnet; 12. Fixing block; 13. Iron block; 14. Locking block; 15. Spring 1; 16. Ball bearing; 17. Connecting plate; 18. Spring 2; 19. Connecting block; 20. Rotating block. Detailed Implementation
[0024] The present invention will be further described in detail below with reference to the embodiments.
[0025] Designing a device that adds auxiliary structures to the combination lock to ensure the suitcase closes properly is the primary technical problem that engineers need to solve.
[0026] To address the aforementioned problems, this utility model provides a carbon fiber composite trolley case. This structure utilizes a spring and a pull rod to further restrict the lid at the top of the case, and a rotating plate and a fixing block to further restrict the lid at the bottom of the case, thereby ensuring a tight fit between the lid and the case.
[0027] The technical solution of the present invention (Embodiment 1) is described in detail below with reference to the accompanying drawings.
[0028] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The carbon fiber composite trolley case specifically includes:
[0029] The box body 1 and the box cover 2 are connected by a hinge. Both sides of the box body 1 are provided with a sleeve plate 5. Inside the sleeve plate 5, a slide rod 6 is slidably installed by a spring 2 18. One end of the slide rod 6 extends out of the inside of the sleeve plate 5, and a hand lever 7 is fixedly installed at one end of the slide rod 6. The hand lever 7 is in contact with the surface of the box cover 2. Both ends of the box body 1 are provided with adjustment components for adjusting the position of the sleeve plate 5.
[0030] Specifically, the adjusting component includes a fixed plate 10, which is fixedly connected to the outside of the housing 1. An adjusting plate 4 is slidably installed on the outside of the fixed plate 10. A screw 8 is rotatably installed on the other end of the adjusting plate 4 via a bearing. A connecting plate 17 is fixedly connected to the outside of the housing 1 at the other end of the fixed plate 10. The screw 8 passes through the interior of the connecting plate 17, and the screw 8 is threadedly connected to the connecting plate 17.
[0031] Specifically, a number of balls 16 are rolledly installed on the top, bottom and sides of the slide bar 6, and the balls 16 are rolledly connected to the inner wall of the sleeve plate 5.
[0032] Specifically, connecting blocks 19 are provided on both sides of the box 1 at the bottom of the fixing plate 10. A rotating plate 9 is fixedly installed on one end of the connecting block 19. Fixing blocks 12 are fixedly connected to both sides of the box cover 2. The rotating plate 9 and the fixing block 12 are interlocked internally.
[0033] Specifically, a magnet 11 is fixedly installed inside the fixing block 12, and an iron block 13 is attracted to the top of the magnet 11. The top of the iron block 13 is fixedly connected to the surface of the rotating plate 9.
[0034] Specifically, rotating blocks 20 are slidably installed on both sides of the box body 1 via springs 15. The outer side of the rotating blocks 20 is rotatably connected to the connecting block 19. Locking blocks 14 are fixedly installed on both sides of the box body 1 and the box cover 2. The locking blocks 14 are in contact with the top of the rotating plate 9.
[0035] In this embodiment, to address the problem of a damaged combination lock preventing the suitcase from closing properly, reference is made to... Figure 1 , Figure 2 and Figure 3 The specific implementation method is as follows: After the case body 1 and the case cover 2 are tightly closed, the operator can rotate the hand lever 7 to the bottom of one end and pull the hand lever 7 at the same time, so that the sliding rod 6 moves to the outside of the sleeve plate 5. Then release the hand lever 7. At this time, the spring 2 18 can pull the sliding rod 6, so that the hand lever 7 is locked into the groove of the case cover 2, which helps to limit the position of the case cover 2 at one end of the case body 1, thereby reducing the possibility of the combination lock being damaged, which would cause the suitcase to fail to close properly.
[0036] Depending on the strength of the spring 18 and the thickness of the lid 2, if the tension of the spring 18 is insufficient or the thickness of the lid 2 is reduced, the possibility of the lid 2 separating from the body 1 will increase. Therefore, the operator can rotate the screw 8 to make the screw 8 rotate inside the connecting plate 17 and drive the adjusting plate 4 to move to the other end, thereby adjusting the position of the sleeve 5 to improve the limiting effect on the lid 2.
[0037] In this embodiment, in order to improve the limiting effect on the lid 2, reference is made to... Figure 1 , Figure 2 , Figure 5 and Figure 6 The specific implementation method is as follows: the operator rotates the rotating plate 9 to the bottom of one end, so that a part of the rotating plate 9 is inserted into the interior of the fixing block 12, and the iron block 13 and the magnet 11 attract each other, which can reduce the possibility of the rotating plate 9 separating from the fixing block 12, thereby limiting the box cover 2 from the position near the bottom and improving the tightness of the fit between the box cover 2 and the box body 1.
[0038] By attaching the locking block 14 to the top of the rotating plate 9, the rotating plate 9 can be limited from the top, further reducing the possibility of the rotating plate 9 detaching from the fixing block 12, improving the tightness of the fit between the lid 2 and the body 1, and by pulling the rotating plate 9 outward, the spring 15 can be stretched, at which point the rotating plate 9 can be separated from the surface of the locking block 14, thus making it convenient for the rotating plate 9 to rotate to the top, so as to open the lid 2 and take out and store items.
[0039] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.
[0040] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A carbon fiber composite trolley case, comprising a case body (1) and a case lid (2), wherein the case body (1) and the case lid (2) are rotatably connected by a hinge; characterized in that: Both sides of the box body (1) are provided with a sleeve plate (5). A slide rod (6) is slidably installed inside the sleeve plate (5) by a spring (18). One end of the slide rod (6) extends out of the inside of the sleeve plate (5), and a hand lever (7) is fixedly installed at one end of the slide rod (6). The hand lever (7) is in contact with the surface of the box cover (2). Both ends of the housing (1) are provided with adjustment components for adjusting the position of the sleeve (5).
2. The carbon fiber composite trolley case according to claim 1, characterized in that: The adjusting component includes a fixed plate (10), which is fixedly connected to the outside of the housing (1). An adjusting plate (4) is slidably installed on the outside of the fixed plate (10). A screw (8) is rotatably installed on the other end of the adjusting plate (4) through a bearing. A connecting plate (17) is fixedly connected to the outside of the housing (1) at the other end of the fixed plate (10). The screw (8) passes through the interior of the connecting plate (17), and the screw (8) is threadedly connected to the connecting plate (17).
3. A carbon fiber composite trolley case according to claim 2, characterized in that: The top, bottom and sides of the slide bar (6) are all equipped with a number of balls (16) that are rolled and connected to the inner wall of the sleeve plate (5).
4. A carbon fiber composite trolley case according to claim 3, characterized in that: Connecting blocks (19) are provided on both sides of the box (1) at the bottom of the fixing plate (10). A rotating plate (9) is fixedly installed at one end of the connecting block (19). Fixing blocks (12) are fixedly connected to both sides of the box cover (2). The rotating plate (9) and the fixing block (12) are interlocked internally.
5. A carbon fiber composite trolley case according to claim 4, characterized in that: A magnet (11) is fixedly installed inside the fixing block (12), and an iron block (13) is attracted to the top of the magnet (11). The top of the iron block (13) is fixedly connected to the surface of the rotating plate (9).
6. A carbon fiber composite trolley case according to claim 5, characterized in that: Both sides of the box (1) are slidably mounted with rotating blocks (20) via springs (15). The outer side of the rotating blocks (20) is rotatably connected to the connecting block (19). Both sides of the box (1) and the box cover (2) are fixedly mounted with locking blocks (14), and the locking blocks (14) are in contact with the top of the rotating plate (9).