A cargo box for a vehicle
By designing extension and buffer mechanisms for vehicle cargo boxes, the complex loading and unloading problems caused by differences in floor height in existing technologies have been solved, improving loading and unloading efficiency, protecting goods, and extending the service life of the cargo boxes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG UNIV
- Filing Date
- 2025-08-22
- Publication Date
- 2026-06-23
AI Technical Summary
The existing vehicle cargo boxes have a height difference between the floor and the ground, which makes loading and unloading bulk materials or heavy goods complicated by the need for tools.
Design a vehicle cargo box including an extension mechanism at the front end of the box. Through the coordinated action of a rotating door, a buffer mechanism, and a reset component, the cargo box floor can be extended and reset, reducing the complexity of loading and unloading.
The design of the extension mechanism reduces the complexity of loading and unloading operations, improves loading and unloading efficiency, and reduces the impact force through the buffer mechanism, protecting the goods and the rotating door and extending the service life of the cargo container.
Smart Images
Figure CN224393565U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display manufacturing technology, and in particular to a cargo box for vehicles. Background Technology
[0002] Vehicle cargo boxes are rigid containers or vehicle structural components used to encapsulate and transport goods. They are widely used in various industries and scenarios, covering multiple fields such as freight transportation, engineering operations, and public welfare, including road freight and urban distribution. Flatbed cargo boxes and box-type cargo boxes can transport various general goods such as building materials, daily necessities, and electronic products. The main market areas include North America, Europe, and the Asia-Pacific region. With the rapid development of e-commerce, cold chain logistics, and other industries, the demand for cargo boxes is becoming increasingly diversified.
[0003] Vehicle cargo boxes are designed and designed in conjunction with mechanical or electronic systems to perform operations such as loading, securing, protecting, and unloading of goods. For example, flatbed cargo boxes are locked by the sideboards, box-type cargo boxes rely on sealing or refrigeration systems, stake cargo boxes rely on fences for balance, protection, and ventilation, dump trucks utilize hydraulic lifting combined with gravity, and tank cargo boxes use specialized tank structures adapted to the characteristics of fluids or bulk materials.
[0004] In existing technologies, some vehicle cargo boxes have a height difference between the bottom plate and the ground and cannot be extended outwards, which requires the use of tools such as ramps and forklifts to assist in loading and unloading bulk materials or heavy goods, thus increasing the operational complexity of the loading and unloading process. Therefore, a new type of vehicle cargo box is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a vehicle cargo box, which aims to improve the problem that some existing vehicle cargo boxes require complicated operations with the aid of tools during use because the bottom plate has a height difference with the ground and cannot be extended outwards.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A vehicle cargo box includes a box body. An extension mechanism is provided inside the front end of the box body. Two rotating doors are rotatably connected inside the front end of the box body. Two buffer mechanisms are provided at the rear ends of the two rotating doors. Handles are fixedly connected to the front ends of the two rotating doors. The extension mechanism includes an inclined groove. An inclined groove is opened inside the front end of the box body. A sliding shaft is slidably connected inside the front end of the box body. Limiting shafts are slidably connected inside the left and right ends of the box body. Limiting blocks are fixedly connected to the top of the limiting shafts. Reset components are slidably connected inside the left and right ends of the box body. Limiting grooves are opened inside the left and right ends of the box body. A support plate is rotatably connected to the outside of the sliding shaft.
[0008] As a further description of the above technical solution:
[0009] Each of the multiple buffer mechanisms includes a rubber plate, and a damper is fixedly connected to the front end of each of the multiple rubber plates. A spring is sleeved on the outside of the damper. Multiple rotating plates are slidably connected inside the two rotating doors. A fixed shaft is rotatably connected inside the rotating plates. Two rotating shafts are fixedly connected to the front end of the box.
[0010] As a further description of the above technical solution:
[0011] Both of the reset components include a support shaft, the outside of which is slidably connected to the inside of the housing, and a spring is sleeved on the outside of the support shaft;
[0012] As a further description of the above technical solution:
[0013] The top of the first spring is fixedly connected to the inside of the housing, and the bottom of the first spring is fixedly connected to the top of the limiting block.
[0014] As a further description of the above technical solution:
[0015] The limiting block is externally slidably connected to the inside of the box body, and the left and right ends of the support plate are respectively slidably connected to the inside of the left and right ends of the box body;
[0016] As a further description of the above technical solution:
[0017] The bottom of the support plate is slidably connected to the inside of the inclined groove, and the rear end of the sliding shaft is in contact with the front ends of the two limiting shafts.
[0018] As a further description of the above technical solution:
[0019] The front ends of the plurality of springs are respectively fixedly connected to the rear ends of the two rotating doors, and the rear ends of the plurality of springs are respectively fixedly connected to the front ends of the plurality of rubber plates;
[0020] As a further description of the above technical solution:
[0021] The interiors of the two rotating doors are rotatably connected to the exteriors of the two rotating shafts, and the rear bottom ends of the two rotating doors are in contact with the front end of the support plate.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the sliding shaft is slid by pulling the support plate and rotated under the guidance of the inclined groove, unfolding into a loading and unloading ramp. The sliding shaft drives the limiting block to squeeze the spring, causing the spring to drive the limiting block and the limiting shaft to reset, thereby limiting the sliding shaft and preventing the support plate from shaking. After loading and unloading is completed, the support plate is pushed to retract, and the limiting shaft is pulled to release the limitation on the sliding shaft. The support plate is limited by closing the rotating door. By extending the box, the complex operation of loading and unloading goods is reduced, and the loading and unloading efficiency of goods is greatly improved.
[0024] 2. In this utility model, when a vehicle brakes suddenly or accelerates, causing the cargo to impact the revolving door, the impact force is first buffered by the rubber plate, and then transmitted to the damper and spring two. The impact force is further mitigated by the energy absorption of spring two through deformation and the slow extension and contraction of the damper. At the same time, the rubber plate squeezes the revolving plate and drives the revolving plate to slide under the limit of the revolving door, thereby converting part of the impact force into frictional force for consumption. Through the multi-component coordinated multi-stage unloading, the collision force is reduced, thereby protecting the cargo and the revolving door, extending the service life of the cargo box, and ensuring transportation safety. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of a vehicle cargo box proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the structure of a rotating door for a vehicle cargo box according to the present invention;
[0027] Figure 3 This is a schematic diagram of the structure of a rotating plate for a vehicle cargo box according to the present invention;
[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0029] Legend:
[0030] 1. Housing; 2. Extension mechanism; 21. Inclined groove; 22. Sliding shaft; 23. Limiting shaft; 24. Limiting block; 25. Reset assembly; 251. Support shaft; 252. Spring 1; 26. Limiting groove; 27. Support plate; 3. Rotating door; 4. Buffer mechanism; 41. Rubber plate; 42. Damper; 43. Spring 2; 44. Rotating plate; 45. Fixed shaft; 46. Rotating shaft; 5. Handle. Detailed Implementation
[0031] 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.
[0032] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a vehicle cargo box, including a box body 1. The box body 1 is made of alloy steel, which has impact resistance and protects the internal goods from external collisions during transportation. An extension mechanism 2 is provided inside the front end of the box body 1. The extension mechanism 2 mainly provides support for the conveying channel during material loading and unloading, thereby improving the ease of loading and unloading the cargo box. Two rotating doors 3 are rotatably connected inside the front end of the box body 1. The two rotating doors 3 are symmetrically distributed on the left and right sides of the front end of the box body 1, which can seal and protect the goods inside the box body 1, preventing the goods from falling during transportation, and also provide openings for loading and unloading, facilitating the loading and unloading of goods by personnel. Two buffer mechanisms 4 are provided at the rear ends of each of the two rotating doors 3. The buffer mechanisms 4 provide a buffering effect to prevent damage caused by violent collisions between the goods and the rotating doors 3 due to inertia during operation. Handles 5 are fixedly connected to the front ends of each of the two rotating doors 3. The handles 5 are made of non-slip rubber material with a textured surface to prevent slippage when opening and closing the rotating doors 3, facilitating force application.
[0033] The extension mechanism 2 includes a sloping groove 21. The sloping groove 21 is precisely designed to provide a guiding support path. A sliding shaft 22 is slidably connected inside the front end of the housing 1. The interior of the housing 1 has grooves to guide the sliding shaft 22, preventing it from shifting during sliding and thus improving its sliding stability. Limiting shafts 23 are slidably connected inside both the left and right ends of the housing 1. The rear end of the sliding shaft 22 contacts the front ends of the two limiting shafts 23. Manual pushing causes the limiting shafts 23 to slide vertically inside the housing 1. When the sliding shaft 22 slides, the limiting shafts 23 prevent it from deviating. The housing 1 guides the sliding of the limiting shafts 23, thereby enhancing their sliding limiting effect. The top of the limiting shaft 23 is fixedly connected to the limiting block 24. The external part of the limiting block 24 is slidably connected to the inside of the housing 1. The housing 1 provides guidance for the sliding of the limiting block 24. The sliding of the limiting shaft 23 provides power for the sliding of the limiting block 24, thereby improving the sliding stability of the limiting block 24 and preventing the limiting shaft 23 from deviating during the sliding process.
[0034] Both ends of the housing 1 are slidably connected to a reset assembly 25, which provides a sliding reset function. Each reset assembly 25 includes a support shaft 251, which is slidably connected to the inside of the housing 1. The housing 1 guides the sliding of the support shaft 251, preventing it from deviating during sliding and thus improving its sliding stability. A spring 252 is sleeved on the outside of the support shaft 251, providing support and preventing it from deviating under force, thereby improving its efficiency. The top of the spring 252 is fixedly connected to the inside of the housing 1. The housing 1 reduces the pressure on the spring 252, provides support for its reset, and extends its service life. The bottom of spring 252 is fixedly connected to the top of the limiting block 24. The limiting block 24 slides to compress spring 252, causing spring 252 to deform under force and drive the limiting shaft 23 to slide, thereby releasing the limitation on the sliding shaft 22.
[0035] Limiting grooves 26 are provided inside both the left and right ends of the housing 1. The shape of the limiting grooves 26 is adapted to the support shaft 251, providing guidance for the sliding of the support shaft 251 and thus ensuring the sliding stability of the support shaft 251. A support plate 27 is rotatably connected to the outside of the sliding shaft 22. The left and right ends of the support plate 27 are slidably connected to the left and right ends of the housing 1, respectively. The housing 1 provides limiting and guidance for the sliding of the support plate 27. By manually pulling the support plate 27, the sliding shaft 22 is driven to slide inside the housing 1, thereby improving the sliding stability of the support plate 27. The bottom of the support plate 27 is slidably connected inside the inclined groove 21. When the support plate 27 is pulled forward, under the guidance of the inclined groove 21, the support plate 27 rotates downward and unfolds under the action of the sliding shaft 22, thus contacting the ground. The limiting shaft 23 limits the sliding shaft 22, thereby preventing the support plate 27 from shaking when transporting materials, improving the stability of material operation and transportation efficiency. The bottom rear ends of the two rotating doors 3 are in contact with the front end of the support plate 27. When the support plate 27 is pushed to drive the sliding shaft 22 into the interior of the box 1, the rotating doors 3 are closed to limit the support plate 27 and prevent the support plate 27 from moving during the movement of the vehicle.
[0036] Reference Figures 1 to 3Each of the multiple buffer mechanisms 4 includes a rubber plate 41, which is elastic and wear-resistant. When a vehicle brakes suddenly at high speed, causing cargo to impact the revolving door 3 due to inertia, the rubber plate 41 buffers the impact, preventing damage to both the cargo and the revolving door 3. A damper 42 is fixedly connected to the front end of each rubber plate 41. The damper 42 provides damping force. When the impact force generated by the cargo impact is transmitted to the damper 42, the damper 42 slowly extends and retracts, prolonging the impact time and further reducing the magnitude of the impact force, thus enhancing the buffering effect. A second spring 43 is sleeved on the outside of the damper 42. The second spring 43 absorbs elastic force, and the damper 42 provides support for the second spring 43, thereby improving the efficiency of the second spring 43 in mitigating impact. The front ends of multiple springs 43 are fixedly connected to the rear ends of two rotating doors 3, and the rear ends of multiple springs 43 are fixedly connected to the front ends of multiple rubber plates 41. When the goods impact the rubber plates 41 by inertia, the force is transmitted to the springs 43 through the rubber plates 41, thereby squeezing the springs 43 and causing them to deform under the force. Then, the springs 43 release their elasticity to drive the rubber plates 41 to reset, thereby relieving the impact force and reducing the impact force on the rotating doors 3.
[0037] Both rotating doors 3 have multiple rotating plates 44 slidably connected inside. A fixed shaft 45 is rotatably connected inside each rotating plate 44. The impact force transmitted by the rubber plate 41 causes the rubber plate 41 to rotate via the fixed shaft 45. Under the pressure of the rubber plate 41, the rotating plate 44 converts the rotational force into sliding force inside the rotating door 3 through the shaft's limiting mechanism, further mitigating the impact force. Two rotating shafts 46 are fixedly connected to the front end of the housing 1. The interiors of the two rotating doors 3 are rotatably connected to the exteriors of the two rotating shafts 46. The rotating shafts 46 provide a fulcrum for the rotation of the rotating doors 3. The housing 1 enhances the support effect of the rotating shafts 46, preventing the rotating doors 3 from deviating during rotation and thus improving the rotational stability of the rotating doors 3.
[0038] Working principle: During material loading and unloading operations, the worker holds the handle 5 on the rotating door 3 and opens the rotating door 3 outward, releasing the restriction on the support plate 27. Then, by manually pulling the support plate 27, the support plate 27 drives the sliding shaft 22 to slide forward inside the box 1, thereby causing the support plate 27 to slide inside the inclined groove 21. Under the guidance of the inclined groove 21, the support plate 27 rotates and unfolds around the sliding shaft 22 until it contacts the ground. During this process, the sliding shaft 22 moves forward. At this time, by manually pulling the limiting shaft 23, the limiting shaft 23 drives the limiting block 24 to slide inside the box 1, while the limiting block 24 compresses the spring 252, causing it to deform. When the sliding shaft 22 slides to the appropriate position, the spring 252 releases the elastic force to drive the limiting block 24 and the limiting shaft 23 to reset, thereby embedding the limiting shaft 23 into the interior of the box 1, thus limiting the sliding shaft 22 and preventing the support plate 27 from shaking during material conveying, thereby improving the loading and unloading efficiency. After the loading and unloading of goods is completed, the supporting plate 27 is pushed to drive the sliding shaft 22 into the interior of the box 1. At this time, the limiting shaft 23 is pulled to displace, thereby releasing the limitation on the sliding shaft 22. By closing the rotating door 3, the bottom of the rotating door 3 contacts the front end of the supporting plate 27, thereby limiting the supporting plate 27 and preventing the supporting plate 27 from moving when the vehicle is moving.
[0039] When the vehicle brakes or accelerates suddenly during transportation, the goods inside the container 1 impact the rotating door 3 forward or backward due to inertia. When the goods hit the rubber plate 41, the rubber plate 41 uses its own elasticity to initially buffer the impact force. At the same time, the rubber plate 41 transmits the impact force to the damper 42 and the second spring 43, causing the second spring 43 to deform under compression and absorb part of the impact force. The damper 42 slowly expands and contracts through its own damping effect, prolonging the impact force's duration and further reducing the impact force. In addition, when the rubber plate 41 is under force, it drives the rotating plate 44 to rotate by pressing the fixed shaft 45. Through the limiting of the rotating door 3, the rotating plate 44 slides inside the rotating door 3, thereby converting part of the impact force into sliding friction force, further consuming the impact force. Through the synergistic effect of the rubber plate 41, damper 42, second spring 43, and rotating plate 44, the collision force between the goods and the rotating door 3 is effectively reduced, thus protecting the goods and the rotating door 3 from damage.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A cargo box for a vehicle, comprising a box body (1), characterized by: An extension mechanism (2) is provided inside the front end of the box (1). Two rotating doors (3) are rotatably connected inside the front end of the box (1). Two buffer mechanisms (4) are provided at the rear ends of the two rotating doors (3). A handle (5) is fixedly connected to the front end of the two rotating doors (3). The extension mechanism (2) includes a sloping groove (21). The front end of the box (1) is provided with a sloping groove (21). A sliding shaft (22) is slidably connected to the front end of the box (1). Limiting shafts (23) are slidably connected to the left and right ends of the box (1). A limiting block (24) is fixedly connected to the top of the limiting shaft (23). A reset assembly (25) is slidably connected to the left and right ends of the box (1). Limiting grooves (26) are provided to the left and right ends of the box (1). A support plate (27) is rotatably connected to the outside of the sliding shaft (22).
2. A vehicle cargo box according to claim 1, characterized in that: Each of the multiple buffer mechanisms (4) includes a rubber plate (41), and a damper (42) is fixedly connected to the front end of each of the multiple rubber plates (41). A spring (43) is sleeved on the outside of the damper (42). Multiple rotating plates (44) are slidably connected inside the two rotating doors (3). A fixed shaft (45) is rotatably connected inside the rotating plate (44). Two rotating shafts (46) are fixedly connected to the front end of the box (1).
3. A vehicle cargo box according to claim 1, characterized in that: Both of the reset components (25) include a support shaft (251), the outside of which is slidably connected to the inside of the housing (1), and a spring (252) is sleeved on the outside of the support shaft (251).
4. A vehicle cargo box according to claim 3, characterized in that: The top of the first spring (252) is fixedly connected to the inside of the housing (1), and the bottom of the first spring (252) is fixedly connected to the top of the limiting block (24).
5. A vehicle cargo box according to claim 1, characterized in that: The limiting block (24) is externally slidably connected to the inside of the box (1), and the left and right ends of the support plate (27) are respectively slidably connected to the inside of the left and right ends of the box (1).
6. A vehicle cargo box according to claim 3, characterized in that: The bottom of the support plate (27) is slidably connected inside the inclined groove (21), and the rear end of the sliding shaft (22) is in contact with the front ends of the two limiting shafts (23).
7. A vehicle cargo box according to claim 2, characterized in that: The front ends of the multiple springs (43) are respectively fixedly connected to the rear ends of the two rotating doors (3), and the rear ends of the multiple springs (43) are respectively fixedly connected to the front ends of the multiple rubber plates (41).
8. A vehicle cargo box according to claim 2, characterized in that: The interiors of the two rotating doors (3) are rotatably connected to the exteriors of the two rotating shafts (46), and the bottom rear ends of the two rotating doors (3) are in contact with the front end of the support plate (27).