One-step formed high-strength draw-bar box
By incorporating anti-collision bumps, reinforced protective plates, and shock-absorbing devices into the one-piece injection molded suitcase design, the problem of insufficient strength and shock absorption performance of existing suitcases is solved, achieving higher anti-collision performance and usage stability.
Patent Information
- Application Number
- CN202520284350.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing rolling suitcases have low overall strength, poor impact resistance, and insufficient cushioning and shock absorption, making them prone to damage and severe vibration during use.
The suitcase body is made of one-piece injection molding, combined with anti-collision bumps, reinforced protective plates, buffer springs and dampers. It uses aluminum-magnesium alloy and wear-resistant plastic composite polyethylene material to enhance structural strength, and uses buffer springs and dampers to reduce shock.
It improves the impact resistance and lifespan of the suitcase, while reducing vibration amplitude and improving the stability and safety of use.
Smart Images

Figure CN223860324U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to trolley case technical field, concretely is one forming high strength trolley case. BACKGROUND
[0002] In daily life, the existing travel case is composed of steel wire framework, composite fabric, lining, inner lining plastic plate, zipper, handle, wheel, pull rod, hinge and other materials, and is processed by sewing machine sewing and rivet riveting process. It has low overall strength, poor rainproof performance, low heavy pressure resistance, complicated processing technology and other defects.
[0003] Through the search, the application of patent announcement No. CN218790962U discloses a high-strength trolley case, which comprises a box body, a plurality of plate bodies are arranged on the outer surface of the box body for protection, and the plate bodies are connected by leather cloth layers, and the outer periphery of the plate bodies is covered with an ultra-high molecular PE cloth layer for scratch prevention. The use of multiple plate bodies, leather cloth layers and ultra-high molecular PE cloth layers can effectively improve the strength of the trolley case, reduce the possibility of scratches during use, and improve the safety of the trolley case during use.
[0004] However, due to the arrangement of the leather cloth layer and the PE cloth layer, the trolley case is relatively soft, and the internal objects of the trolley case are easily damaged when impacted by external objects, and the anti-collision performance is low. At the same time, due to the unevenness of the road surface during movement, the trolley case has strong vibration and low cushioning performance.
[0005] Therefore, we propose a one-step forming high-strength trolley case. Utility model content
[0006] In view of the shortcomings of the prior art, the utility model provides a one-step forming high-strength trolley case, which solves the problems of low anti-collision performance and low cushioning performance of the existing device.
[0007] To achieve the above purpose, the utility model realizes the following technical scheme: a one-step forming high-strength trolley case, comprising a trolley case body, four groups of moving wheels are arranged on the bottom surface of the trolley case body.
[0008] The trolley case body is integrally injection molded, the front side of the trolley case body is equipped with uniformly distributed anti-collision protrusions A, the left and right sides of the trolley case body are equipped with uniformly distributed anti-collision protrusions B, the trolley case body, the anti-collision protrusions A and the anti-collision protrusions B are integrally injection molded, eight corners of the inner wall of the trolley case body are integrally injection molded with specification-matched reinforcing guards, the reinforcing guards are made of aluminum-magnesium-gold material, and the trolley case body is made of wear-resistant plastic composite polyethylene material.
[0009] The top surface of the mobile wheel is equipped with a fixed frame with matching specifications, the top surface of the fixed frame is fixedly installed with a buffer spring, the top surface of the buffer spring is fixedly installed with a mounting plate, the mounting plate is connected with the bottom surface of the trolley case body, and the inner side of the buffer spring is equipped with a damper.
[0010] Preferably, the rear side of the trolley case body is integrally injection molded with a fixed frame with matching specifications, and the fixed frame is equipped with a trolley with matching specifications, so that the strength of the rear side of the trolley case body is improved, and the fixed frame can also protect the trolley.
[0011] Preferably, the top surface of the trolley case body is fixedly installed with positionally opposite handles, so that the trolley case can be easily lifted by the handles.
[0012] Preferably, the outer wall of the handle is equipped with an anti-skid layer, so that the anti-skid property of the handle is improved.
[0013] Preferably, the right side of the trolley case body is integrally injection molded with positionally opposite hinge seats, so that the strength of the connection between the hinge seats and the trolley case body is improved.
[0014] Preferably, the trolley is made of aluminum alloy material, so that the strength of the trolley is improved and the phenomenon of breakage is prevented.
[0015] The one-piece high-strength trolley case is integrally injection molded, and the trolley case can improve the overall strength, the anti-collision performance of the trolley case is improved by the anti-collision protrusions A and B, and the anti-collision performance and strength of the corners of the trolley case are improved by the reinforcing guard plates, so that the overall anti-collision performance of the trolley case is improved and the service life is prolonged.
[0016] Meanwhile, when the mobile wheel is subjected to jolting, the buffer spring and the damper can buffer and dampen the mobile wheel, reduce the amplitude of jolting, and improve the stability and safety of the device in use. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 It is a schematic diagram of the fixed frame of the utility model;
[0019] Figure 3 It is a schematic diagram of the reinforcing guard plate of the utility model;
[0020] Figure 4 It is a schematic diagram of the mobile wheel of the utility model.
[0021] In the diagram: 1. Suitcase body; 2. Casters; 3. Anti-collision bump A; 4. Anti-collision bump B; 5. Reinforcing guard plate; 6. Fixing frame; 7. Mounting plate; 8. Buffer spring; 9. Damper; 10. Hinge seat; 11. Fixing frame; 12. Pull rod; 13. Handle. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Example 1: As Figures 1-4 As shown: The entire body of the suitcase 1 is integrally injection molded. The front of the suitcase body 1 is fitted with evenly distributed anti-collision protrusions A3, and the left and right sides of the suitcase body 1 are fitted with evenly distributed anti-collision protrusions B4. The suitcase body 1, anti-collision protrusions A3 and B4 are integrally injection molded. The eight corners of the inner wall of the suitcase body 1 are integrally injection molded with matching reinforcing plates 5. The reinforcing plates 5 are made of aluminum-magnesium alloy. The suitcase body 1 is injection molded from wear-resistant plastic composite polyethylene material. Through the placement of anti-collision protrusions A3, B4, and reinforcing plates 5, the integrally injection molded suitcase can improve its overall strength. Anti-collision protrusions A3 and B4 can improve the suitcase's anti-collision performance, and reinforcing plates 5 can improve the anti-collision performance and strength of the corners of the suitcase, thereby improving the overall anti-collision performance of the suitcase and extending its service life.
[0024] Example 2: Figures 2-4 As shown: The top surface of the movable wheel 2 is equipped with a fixed frame 6 of the same specifications. A buffer spring 8 is fixedly installed on the top surface of the fixed frame 6. A mounting plate 7 is fixedly installed on the top surface of the buffer spring 8. The mounting plate 7 is connected to the bottom surface of the trolley case body 1. A damper 9 is installed on the inner side of the buffer spring 8. Through the setting of the buffer spring 8 and the damper 9, when the movable wheel 2 is subjected to bumps, the buffer spring 8 and the damper 9 can buffer and reduce the vibration of the movable wheel 2, reduce the amplitude of the bumps, and improve the stability and safety of the device.
[0025] Example 3: As Figures 2-3 As shown: The rear side of the suitcase body 1 is integrally injection molded with a matching fixing frame 11. The fixing frame 11 is equipped with a matching pull rod 12. In this way, the fixing frame 11 improves the strength of the rear side of the suitcase body 1 and also protects the pull rod 12.
[0026] The working principle and use process of the utility model: when the device needs to work, the pull rod box integrally injection molded can improve the overall strength, the anti-collision bump A3 and the anti-collision bump B4 can improve the anti-collision performance of the pull rod box, the reinforcing guard plate 5 can improve the anti-collision performance and strength of the pull rod box corner, thereby improving the anti-collision performance of the pull rod box as a whole, improving its service life, and at the same time when the moving wheel 2 is jolted, the buffer spring 8 and the damper 9 can buffer the moving wheel 2, reduce the amplitude of jolt, improve the stability and safety of the device use.
[0027] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0028] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.
Claims
1. A one-piece molded high-strength trolley case, including a trolley case body (1), wherein the bottom surface of the trolley case body (1) is equipped with four sets of opposing movable wheels (2). Its features are: The entire body of the suitcase (1) is integrally injection molded. The front side of the suitcase body (1) is equipped with uniformly distributed anti-collision protrusions A (3). The left and right sides of the suitcase body (1) are equipped with uniformly distributed anti-collision protrusions B (4). The suitcase body (1), anti-collision protrusions A (3) and anti-collision protrusions B (4) are integrally injection molded. The eight corners of the inner wall of the suitcase body (1) are integrally injection molded with matching reinforcing plates (5). The reinforcing plates (5) are made of aluminum-magnesium alloy. The suitcase body (1) is injection molded from wear-resistant plastic composite polyethylene material. The top surface of the moving wheel (2) is fitted with a fixed frame (6) of the same specification. A buffer spring (8) is fixedly installed on the top surface of the fixed frame (6). A mounting plate (7) is fixedly installed on the top surface of the buffer spring (8). The mounting plate (7) is connected to the bottom surface of the trolley case body (1). A damper (9) is fitted on the inner side of the buffer spring (8).
2. The one-piece molded high-strength trolley case according to claim 1, characterized in that: The rear side of the suitcase body (1) is integrally injection molded with a fixed frame (11) of the same specifications, and the fixed frame (11) is equipped with a pull rod (12) of the same specifications.
3. The one-piece molded high-strength trolley case according to claim 1, characterized in that: The top surface of the suitcase body (1) is fixedly equipped with handles (13) in opposite positions.
4. The one-piece molded high-strength trolley case according to claim 3, characterized in that: The outer wall of the handle (13) is fitted with an anti-slip layer.
5. The one-piece molded high-strength trolley case according to claim 1, characterized in that: The right side of the suitcase body (1) is integrally injection molded with a hinge seat (10) in a corresponding position.
6. The one-piece molded high-strength trolley case according to claim 2, characterized in that: The pull rod (12) is made of aluminum alloy.