Oxford fabric draw-bar box

Abstract

The utility model provides an oxford cloth draw-bar box and belongs to the technical field of bags and suitcases. The oxford cloth draw-bar box comprises a box main body, first moving wheel sets are installed at the four corners of the bottom of the box main body, the box main body is provided with a telescopic draw bar, the box main body is provided with an expansion part, the expansion part is provided with a telescopic part telescopic relative to the box main body and a cover body connected to the telescopic part, and the edge of the cover body is detachably connected with the box main body through a zipper structure; the auxiliary supporting structure is installed at the bottom of the box body, the auxiliary supporting structure comprises a fixed frame, a movable frame and at least one second moving wheel set, the fixed frame is fixed to the middle position of the bottom of the box body, the movable frame is slidably connected with the fixed frame and can move in the capacity expansion direction of the capacity expansion part, and the first moving wheel set is fixed to the movable frame.

Description

Technical Field

[0001] This utility model belongs to the field of luggage technology, specifically an Oxford cloth rolling case. Background Technology

[0002] One significant advantage of Oxford cloth suitcases is their expandable capacity. However, when expanded, the suitcase's center of gravity shifts in the direction of expansion, making it prone to tipping over. When the suitcase is upright, this shift in the center of gravity can cause significant discomfort for the user when moving it. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an Oxford cloth suitcase that maintains a stable center of gravity even after the suitcase's capacity is expanded.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] An Oxford cloth suitcase includes:

[0006] The main body of the box has a first set of moving wheels installed at each of the four corners of the bottom of the main body. The main body of the box has a telescopic pull rod and an expansion section. The expansion section has a telescopic part that extends and retracts relative to the main body of the box and a cover connected to the telescopic part. The edge of the cover is detachably connected to the main body of the box through a zipper structure.

[0007] An auxiliary support structure is installed at the bottom of the main body of the box. The auxiliary support structure includes a fixed frame, a movable frame, and at least one second set of movable wheels. The fixed frame is fixed at the middle position of the bottom of the main body of the box. The movable frame is slidably connected to the fixed frame and can move along the expansion direction of the expansion section. The second set of movable wheels is fixed on the movable frame.

[0008] In the aforementioned Oxford cloth suitcase, the movable frame is connected to the lower end of the lid.

[0009] In the aforementioned Oxford cloth suitcase, after the expansion section is opened, the telescopic part on the expansion section can contact the movable frame.

[0010] In the aforementioned Oxford cloth suitcase, the zipper structure is arranged along the edge of the expansion section, and the zipper structure avoids the movable frame.

[0011] In the aforementioned Oxford cloth case, the fixed frame has at least two conduits, and the movable frame has a slide bar adapted to the conduits.

[0012] In the aforementioned Oxford cloth case, the second set of movable wheels is mounted on the end of the movable frame away from the fixed frame.

[0013] Compared with the prior art, this application has the following advantages:

[0014] In this application, the auxiliary support structure precisely responds to the change in the center of gravity after expansion by sliding the movable frame and the second set of moving wheels, which greatly reduces the risk of the suitcase tipping over and significantly improves the safety of use compared with ordinary expanded suitcases. Attached Figure Description

[0015] Figure 1 This is a side view of this application;

[0016] Figure 2 This is a schematic diagram of the expanded section after it has been opened in this application;

[0017] Figure 3 This is a schematic diagram of the location of the zipper structure in this application;

[0018] Figure 4 This is a schematic diagram of the auxiliary support structure in this application;

[0019] In the picture,

[0020] 2. Box body; 21. First set of moving wheels; 22. Telescopic pull rod; 23. Expansion section; 231. Telescopic section; 232. Lid; 24. Zipper structure; 241. Clearance section;

[0021] 3. Auxiliary support structure; 31. Fixed frame; 311. Conduit; 32. Movable frame; 321. Slide rod; 33. Second moving wheel set. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1 to 4As shown, an Oxford cloth suitcase includes: a suitcase body 2, an auxiliary support structure 3, and first movable wheel sets 21 installed at the four corners of the bottom of the suitcase body 2. The suitcase body 2 has a telescopic pull rod 22 and an expansion section 23. The expansion section 23 has a telescopic part 231 that extends and retracts relative to the suitcase body 2 and a cover 232 connected to the telescopic part 231. The edge of the cover 232 is detachably connected to the suitcase body 2 via a zipper structure 24. The auxiliary support structure 3 is installed at the bottom of the suitcase body 2 and includes a fixed frame 31, a movable frame 32, and at least one second movable wheel set 33. The fixed frame 31 is fixed at the middle position of the bottom of the suitcase body 2. The movable frame 32 is slidably connected to the fixed frame 31 and can move along the expansion direction of the expansion section 23. The second movable wheel set 33 is fixed on the movable frame 32.

[0024] In this application, the first set of movable wheels 21 installed at the four corners of the bottom of the main body 2 of the box, in the normal unexpanded state, works with the telescopic pull rod 22 to facilitate the user to pull the box to move.

[0025] When expansion is needed, the expansion section 23 on the main body 2 comes into play. The telescopic section 231 of the expansion section 23 extends relative to the main body 2, and the cover 232 connected to the telescopic section 231 is pulled apart from the main body 2 through the zipper structure 24 on the edge, thereby increasing the capacity of the suitcase. However, the center of gravity is prone to shift after expansion. At this time, the auxiliary support structure 3 becomes particularly important. The auxiliary support structure 3 is installed at the bottom of the main body 2. The movable frame 32 is slidably connected to the fixed frame 31 and can move along the expansion direction of the expansion section 23. The second moving wheel set 33 installed on the movable frame 32 will adjust its position as the movable frame 32 moves. When the expansion section 23 extends and the center of gravity shifts in the expansion direction, the movable frame 32 drives the second moving wheel set 33 to slide in the expansion direction. By changing the position of the support point, the center of gravity of the suitcase is rebalanced, ensuring the stability of the suitcase during movement.

[0026] In this application, the auxiliary support structure 3 precisely responds to the change in the center of gravity after expansion by sliding the movable frame 32 and the second movable wheel set 33, which greatly reduces the risk of the suitcase tipping over and significantly improves the safety of use compared with ordinary expanded suitcases.

[0027] Specifically, the movable frame 32 is connected to the lower end of the cover 232.

[0028] When the expansion section 23 extends and the cover 232 opens to increase the capacity, the movable frame 32 can immediately sense and move synchronously without the user having to operate it.

[0029] Specifically, after the expansion section 23 is opened, the telescopic part 231 on the expansion section 23 can contact the movable frame 32.

[0030] When the expansion section 23 is opened, the telescopic section 231 contacts the movable frame 32. After items are placed inside, the movable frame 32, as a key part of the auxiliary support structure 3, provides additional support for the telescopic section 231, effectively distributing the weight pressure increased by the expansion. This makes the expanded box structure more stable.

[0031] Specifically, the zipper structure 24 is arranged along the edge of the expansion section 23, and the zipper structure 24 avoids the movable frame 32.

[0032] By avoiding the movable frame 32, interference between the zipper and the movable frame 32 can be prevented during the pulling process, further ensuring that the expansion process is not hindered. The lower end of the zipper structure 24 has a clearance portion 241 to avoid the movable frame 32.

[0033] Specifically, the fixed frame 31 has at least two conduits 311, and the movable frame 32 has a slide bar 321 adapted to the conduits 311.

[0034] The fixed frame 31 is equipped with at least two guide tubes 311, and the movable frame 32 is equipped with a sliding rod 321 adapted to it. This design allows the movable frame 32 to maintain a high degree of stability and accuracy when moving along the expansion direction.

[0035] In this application, there are two conduits 311 and two slide rods 321.

[0036] Specifically, the second movable wheel set 33 is installed at the end of the movable frame 32 away from the fixed frame 31.

[0037] The second movable wheel set 33 is installed at the end of the movable frame 32 away from the fixed frame 31. When the expansion part 23 extends and causes the center of gravity to shift in the expansion direction, the movable frame 32 drives the second movable wheel set 33 to slide in the expansion direction. Meanwhile, the first movable wheel set 21 located at the far end can further expand the support base and form a more effective lever arm balance with the second movable wheel set 33.

[0038] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture, as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0039] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0040] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0041] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from this utility model or exceeding the scope defined by the appended claims.

Claims

1. An Oxford cloth suitcase, characterized in that, include: The box body (2) has a first set of moving wheels (21) installed on each of the four corners of the bottom of the box body (2). The box body (2) has a telescopic pull rod (22) and an expansion part (23). The expansion part (23) has a telescopic part (231) that extends and retracts relative to the box body (2) and a cover (232) connected to the telescopic part (231). The edge of the cover (232) is detachably connected to the box body (2) through a zipper structure (24). An auxiliary support structure (3) is installed at the bottom of the box body (2). The auxiliary support structure (3) includes a fixed frame (31), a movable frame (32), and at least one second set of moving wheels (33). The fixed frame (31) is fixed at the middle position at the bottom of the box body (2). The movable frame (32) is slidably connected to the fixed frame (31) and can move along the expansion direction of the expansion section (23). The second set of moving wheels (33) is fixed on the movable frame (32).

2. The Oxford cloth suitcase according to claim 1, characterized in that, The movable frame (32) is connected to the lower end of the cover (232).

3. The Oxford cloth suitcase according to claim 1, characterized in that, After the expansion section (23) is opened, the telescopic part (231) on the expansion section (23) can contact the movable frame (32).

4. The Oxford cloth suitcase according to claim 1, characterized in that, The zipper structure (24) is arranged along the edge of the expansion section (23) and avoids the movable frame (32).

5. The Oxford cloth suitcase according to claim 1, characterized in that, The fixed frame (31) has at least two conduits (311), and the movable frame (32) has a slide bar (321) adapted to the conduits (311).

6. The Oxford cloth suitcase according to claim 5, characterized in that, The second set of movable wheels (33) is installed at the end of the movable frame (32) away from the fixed frame (31).

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