A high-pressure-resistant trolley case
By installing protective corner plates and fixing caps at the four corners of the suitcase, combined with threaded wheels and a rotating structure, the problem of easy damage to the bottom of the suitcase has been solved, achieving high pressure resistance and multi-functional use, and improving safety and aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG OUSHENG LUGGAGE CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-24
AI Technical Summary
The connection between the bottom of the suitcase and the wheels is easily damaged and cannot withstand great pressure, affecting its appearance and usability.
Protective corner plates and fixing caps are installed at the four corners of the suitcase, and the wheels are connected by threads. Combined with the telescopic pull rod and the rotating structure, an integrated impact-resistant frame is formed to distribute pressure and achieve multi-functional use.
It effectively prevents the box from deforming or cracking, improves safety and aesthetics, provides a seating function, and enhances practicality and durability.
Smart Images

Figure CN224539628U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of trolley case technology, specifically a high-pressure-bearing trolley case. Background Technology
[0002] When traveling or waiting, a rolling suitcase can replace a chair, which is very helpful for users and helps them rest and recover their energy. However, since users generally weigh more than 50kg, plus the weight of the contents, the pressure on the connection between the wheels at the bottom of the suitcase and the suitcase is relatively high, which can easily lead to breakage. The connection between the bottom of the suitcase and the wheels is prone to damage, making it difficult to meet the needs of use.
[0003] A search revealed Chinese Patent Publication No. CN 221284859 U, published on December 11, 2024, which discloses a high-pressure-bearing trolley case. The paper states that "the high-pressure-bearing trolley case includes symmetrically arranged receiving cavities, each of the two receiving cavities having four fully enclosed apex corners, and each of the four apex corners of the receiving cavity is provided with corner protectors." The outer wall of the device is messy and complex, affecting the aesthetics of the device and reducing its usability. In view of this, in-depth research was conducted to address the above problems, leading to this case. Utility Model Content
[0004] The purpose of this invention is to provide a high-pressure-bearing trolley case to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure-bearing trolley case, comprising a case body, protective corner plates, and fixing caps. Protective corner plates are installed at the four corners of the outer wall of the case body, and fixing caps are installed on the inner side of the protective corner plates. Wheels are fixed to the bottom of the case body by threads. A rubber handle is installed on one side of the top of the case body, and a telescopic pull rod is installed on the outer side of the rubber handle. The telescopic pull rod is installed on the inner side of the case body, and a rotating structure is installed on the outer side of the telescopic pull rod.
[0006] The rotating structure includes a first connecting plate, a second connecting plate, and a handle. The first connecting plate is installed on the upper part of the outer wall of the telescopic rod, and the second connecting plates are installed on both sides below the first connecting plate. The second connecting plate has a sliding rod inside, and the upper parts of the sliding rods are installed on both sides below the handle. A fixing post is installed on the outer side of the sliding rod, and the fixing post penetrates through the box to the inside of the slide groove. The slide groove is located on the inner side of the box. A fixing block is provided above the fixing post, and the fixing block is located inside the slide groove. The upper part of the fixing block is connected to the box.
[0007] Preferably, the box body is fixedly connected to the protective corner plate and the rubber handle, and the wheels are correspondingly set with the fixing cap.
[0008] Preferably, the fixing cap and the protective corner plate are integrated, and the telescopic rod and the first connecting plate are fixedly connected.
[0009] Preferably, the first connecting plate is U-shaped, and the first connecting plate and the second connecting plate are perpendicular to each other.
[0010] Preferably, the first connecting plate and the handle are correspondingly arranged, and the handle and the slide bar are perpendicular to each other.
[0011] Preferably, the slide rod and the second connecting plate are slidably connected, and the slide rod and the fixed column are fixedly connected.
[0012] Preferably, the fixed column and the sliding groove are slidably connected, and the sliding groove and the housing are integrally formed.
[0013] Preferably, the fixing column and the fixing block are corresponding to each other, and magnetic blocks are installed at the middle position below the handle and on the inner side of the first connecting plate.
[0014] Preferably, the handle and the first connecting plate are magnetically attached.
[0015] Compared with existing technologies, the beneficial effects of this utility model are:
[0016] By setting up a first connecting plate, a second connecting plate, and a handle, and installing protective corner plates and fixing caps at the four corners of the box, an integrated impact-resistant frame is formed, which effectively disperses pressure and prevents the box from deforming or cracking. The wheels are connected to the bottom of the box by threads. Compared with traditional riveting and gluing, threaded fixing is more resistant to heavy pressure and is not easy to loosen or break after long-term use.
[0017] The telescopic rod and the rotating structure are fixed together by the first connecting plate to form a triangular stable structure, which makes it easier to pull. The handle is locked to the first connecting plate by magnetic attraction to prevent accidental unfolding during transportation and improve safety.
[0018] Then, separate the handle from the first connecting plate, pull the handle to drive the slide rod to slide in the second connecting plate, so that the fixed column moves along the slide groove to the fixed block position. The fixed column can rotate in the slide groove, which makes it easy to adjust the handle angle and realize the dragging movement in the seat position. It uses a box for two purposes (moving + seat) to solve the rest needs when waiting for a bus or queuing. Moreover, the rotating structure is completely stored inside the box with no exposed parts, which is beautiful and prevents bumps and knocks, and also improves the practicality of the device. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0020] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;
[0021] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;
[0022] Figure 3 This is a schematic diagram of a partial cross-sectional structure from the rear view of this utility model;
[0023] Figure 4 This is a partial side view of the rotating pull rod of this utility model.
[0024] Figure 5 This is a partial front cross-sectional view of the present invention without the use of a rotating tie rod;
[0025] Figure 6 This is a partial side view of the structure of this utility model without the use of a rotating tie rod;
[0026] Figure 7 This is a partial top view of the rotating tie rod of this utility model;
[0027] Figure 8 This is a schematic diagram of the rotating tie rod structure of this utility model.
[0028] In the diagram: 1. Box body; 2. Protective corner plate; 3. Fixing cap; 4. Wheel; 5. Rubber handle; 6. Telescopic pull rod; 7. Rotating structure; 701. First connecting plate; 702. Second connecting plate; 703. Handle; 704. Slide rod; 705. Fixing post; 706. Slide groove; 707. Fixing block. Detailed Implementation
[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0032] Please see Figure 1-8 This utility model provides a high-pressure-bearing trolley case technical solution: a high-pressure-bearing trolley case includes a case body 1, protective corner plates 2 and fixing caps 3. Protective corner plates 2 are installed at the four corners of the outer wall of the case body 1, and fixing caps 3 are installed on the inner side of the protective corner plates 2. Wheels 4 are fixed to the bottom of the case body 1 by threads. A rubber handle 5 is installed on one side of the top of the case body 1. A telescopic pull rod 6 is installed on the outer side of the rubber handle 5. The telescopic pull rod 6 is installed on the inner side of the case body 1, and a rotating structure 7 is installed on the outer side of the telescopic pull rod 6.
[0033] The rotating structure 7 includes a first connecting plate 701, a second connecting plate 702, and a handle 703. The first connecting plate 701 is installed on the upper part of the outer wall of the telescopic rod 6. The second connecting plate 702 is installed on both sides below the first connecting plate 701. The second connecting plate 702 has a sliding rod 704 inside. The upper parts of the two sliding rods 704 are installed on both sides below the handle 703. The outer side of the sliding rod 704 has a fixing post 705. The fixing post 705 passes through the box 1 to the inside of the slide groove 706. The slide groove 706 is located on the inner side of the box 1. The fixing block 707 is located on the upper part of the fixing post 705. The fixing block 707 is located inside the slide groove 706. The upper part of the fixing block 707 is connected to the box 1.
[0034] Protective corner plates 2 and fixing caps 3 are installed at the four corners of the box 1 to form an integrated impact-resistant frame, which effectively disperses pressure and prevents the box 1 from deforming or cracking. The wheels 4 are connected to the bottom of the box 1 by threads. Compared with traditional riveting and gluing, threaded fixing is more resistant to heavy pressure and is not easy to loosen or break after long-term use.
[0035] The telescopic rod 6 and the rotating structure 7 are fixed by the first connecting plate 701 to form a triangular stable structure, which makes it easier to pull. The handle 703 is locked to the first connecting plate 701 by magnetic attraction to prevent accidental unfolding during transportation and improve safety.
[0036] Then, the handle 703 is separated from the first connecting plate 701. Pulling the handle 703 causes the slide bar 704 to slide within the second connecting plate 702, so that the fixed column 705 moves along the slide groove 706 to the position of the fixed block 707. The fixed column 705 can rotate within the slide groove 706, making it easy to adjust the angle of the handle 703 and realize the dragging movement in the seat state. The device uses a dual-purpose box (moving + seat) to solve the rest needs when waiting for a bus or queuing. Moreover, the rotating structure 7 is completely stored inside the box 1 with no exposed parts, which is aesthetically pleasing and prevents bumps and knocks, and also improves the practicality of the device.
[0037] The box body 1 is fixedly connected to the protective corner plate 2 and the rubber handle 5, and the wheels 4 are correspondingly set with the fixing cap 3.
[0038] The fixed cap 3 and the protective corner plate 2 are integrated, and the telescopic rod 6 and the first connecting plate 701 are fixedly connected.
[0039] The first connecting plate 701 is U-shaped, and the first connecting plate 701 and the second connecting plate 702 are perpendicular to each other.
[0040] The first connecting plate 701 and the handle 703 are correspondingly arranged, and the handle 703 and the slide bar 704 are perpendicular to each other.
[0041] The slide rod 704 is slidably connected to the second connecting plate 702, and the slide rod 704 is fixedly connected to the fixed column 705.
[0042] The fixed column 705 and the slide 706 are slidably connected, and the slide 706 and the housing 1 are integrated.
[0043] The fixing post 705 and the fixing block 707 are corresponding to each other, and magnetic blocks are installed at the middle position below the handle 703 and the inner side of the first connecting plate 701.
[0044] The handle 703 and the first connecting plate 701 are magnetically attached to prevent accidental unfolding during transportation using the telescopic rod 6, thus improving safety.
[0045] Although embodiments of the present utility have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-pressure-bearing trolley case, comprising a case body (1), protective corner plates (2), and a fixing cap (3), characterized in that: Protective corner plates (2) are installed at the four corners of the outer wall of the box (1). A fixing cap (3) is installed on the inner side of the protective corner plate (2). The bottom of the box (1) is fixed with a threaded wheel (4). A rubber handle (5) is installed on one side of the top of the box (1). A telescopic pull rod (6) is installed on the outer side of the rubber handle (5). The telescopic pull rod (6) is installed on the inner side of the box (1). A rotating structure (7) is installed on the outer side of the telescopic pull rod (6). The rotating structure (7) includes a first connecting plate (701), a second connecting plate (702), and a handle (703). The first connecting plate (701) is installed on the upper part of the outer wall of the telescopic rod (6). The second connecting plate (702) is installed on both sides below the first connecting plate (701). The second connecting plate (702) has a sliding rod (704) inside. The upper parts of the sliding rod (704) are installed on both sides below the handle (703). The outer side of the sliding rod (704) is equipped with a fixing post (705). The fixing post (705) penetrates the box (1) to the inside of the slide groove (706). The slide groove (706) is located on the inner side of the box (1). The fixing block (707) is located on the upper part of the fixing post (705). The fixing block (707) is located inside the slide groove (706). The upper part of the fixing block (707) is connected to the box (1).
2. The high-pressure-bearing trolley case according to claim 1, characterized in that: The box body (1) is fixedly connected to the protective corner plate (2) and the rubber handle (5), and the wheels (4) are correspondingly set with the fixing cap (3).
3. A high-pressure-bearing trolley case according to claim 2, characterized in that: The fixing cap (3) and the protective corner plate (2) are integrated, and the telescopic rod (6) and the first connecting plate (701) are fixedly connected.
4. A high-pressure-bearing trolley case according to claim 3, characterized in that: The first connecting plate (701) is U-shaped, and the first connecting plate (701) and the second connecting plate (702) are perpendicular to each other.
5. A high-pressure-bearing trolley case according to claim 4, characterized in that: The first connecting plate (701) and the handle (703) are correspondingly arranged, and the handle (703) and the slide bar (704) are perpendicular to each other.
6. A high-pressure-bearing trolley case according to claim 5, characterized in that: The slide rod (704) is slidably connected to the second connecting plate (702), and the slide rod (704) is fixedly connected to the fixed column (705).
7. A high-pressure-bearing trolley case according to claim 6, characterized in that: The fixed column (705) and the slide groove (706) are slidably connected, and the slide groove (706) and the box body (1) are integrally set.
8. A high-pressure-bearing trolley case according to claim 7, characterized in that: The fixing post (705) and the fixing block (707) are corresponding to each other, and magnetic blocks are installed at the middle position below the handle (703) and the inner side of the first connecting plate (701).
9. A high-pressure-bearing trolley case according to claim 8, characterized in that: The handle (703) and the first connecting plate (701) are magnetically attached.