Wooden packaging box

Abstract

The application discloses a wooden packaging box, which comprises a packaging box shell, a slow-falling mechanism and a buffer mechanism, wherein the slow-falling mechanism comprises a pair of contact assemblies arranged on the two sides of the packaging box shell and a pair of slow-falling assemblies arranged on the upper side of the contact assemblies; the buffer mechanism comprises a buffer connecting rod arranged on the upper side of the contact assemblies and a buffer assembly arranged on the upper side of the buffer connecting rod; and the contact assembly comprises a contact plate, a contact pad and a pair of contact rods. The wooden packaging box can provide sufficient and effective buffer effect when the box body is vertically impacted at the bottom, significantly prolongs the impact time, reduces the instantaneous impact acceleration, controls the impact force transmitted to the box body and the internal goods within the safety threshold, and has good repeatability and fatigue resistance, so that the buffer effect can be kept consistent after multiple impacts, and the protection failure caused by material performance attenuation is avoided.

Description

Technical Field

[0001] This invention belongs to the field of packaging box technology, and specifically relates to a wooden packaging box. Background Technology

[0002] Packaging boxes are the most basic carrier containers in logistics and warehousing. They cover a variety of materials such as cardboard boxes, plastic boxes, metal boxes, and wooden boxes. Their core mission is to protect the contents from external damage, moisture, or contamination during handling, stacking, and transportation. Depending on the shape of the goods and the circulation environment, packaging boxes can be designed as closed, open, or framed, and supplemented with internal accessories such as padding, partitions, or strapping to improve space utilization and fixation.

[0003] Wooden crates are a traditional and important branch of the crate family. They are usually made of solid wood boards or plywood. With the high compressive strength and excellent toughness of natural wood, they play an irreplaceable role in the transportation of heavy machinery, large parts and precision instruments.

[0004] During unloading and transportation, wooden crates are frequently subjected to transient vertical impact loads on their bottom. These include the impact of a forklift fork lowering the crate to the ground, the vertical impact of the crate hitting the ground during hoisting operations, and the impact force generated when an upper crate is placed vertically on a lower crate during stacking. Existing wooden crates typically have rubber pads or wooden sleepers installed under the bottom plate in an attempt to achieve vertical cushioning through the elastic compression of the material itself. However, such structures have significant shortcomings: the cushioning stroke is limited by the thickness of the pads, resulting in limited energy absorption and an inability to absorb the impact energy of large vertical drops; rubber materials are prone to aging and hardening, and their cushioning performance deteriorates after long-term use; wooden sleepers have poor elasticity and are prone to cracking, and are susceptible to irreversible deformation after impact, affecting the stability of the cushioning effect.

[0005] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a wooden packaging box.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to provide a wooden packaging box that can solve the problems of existing wooden packaging boxes that rely solely on rubber pads or wooden sleepers for cushioning, resulting in limited cushioning stroke, insufficient energy absorption, and unstable cushioning performance due to easy aging and deformation of the materials.

[0008] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution: A wooden packaging box includes: a box shell, a slow-descent mechanism, and a cushioning mechanism. The slow-descent mechanism includes a pair of contact components respectively disposed on both sides of the box shell and a pair of slow-descent components disposed on the upper side of the contact components; the cushioning mechanism includes a cushioning connecting rod disposed on the upper side of the contact components and a cushioning component disposed on the upper side of the cushioning connecting rod.

[0009] In one or more embodiments of the present invention, the contact assembly includes: a contact plate, a contact pad, and a pair of contact rods. The contact plate is disposed on the lower side of the outer shell of the packaging box; the contact pad is disposed on the lower side of the contact plate; and the pair of contact rods are disposed on the upper side of the contact plate.

[0010] In one or more embodiments of the present invention, the contact pad is fixedly connected to the contact plate, and the contact plate is fixedly connected to the contact rod.

[0011] In one or more embodiments of the present invention, the descent control assembly includes: a descent chamber, a descent plate, a descent rod, and a descent spring. The descent chamber is disposed above the contact rod; the descent plate is disposed inside the descent chamber; the descent rod is disposed above the descent plate; and the descent spring is sleeved on the outside of the descent rod.

[0012] In one or more embodiments of the present invention, the contact rod passes through the deceleration chamber, a deceleration sealing ring is provided between the deceleration plate and the deceleration chamber, and several flow grooves are cut into the deceleration plate.

[0013] In one or more embodiments of the present invention, the deceleration rod passes through the deceleration chamber, the deceleration spring is disposed on the side of the deceleration plate away from the contact rod, and a deceleration bearing is disposed between the deceleration rod and the contact rod and the deceleration chamber.

[0014] In one or more embodiments of the present invention, the buffer assembly includes: a buffer support frame, a buffer slider, and a buffer spring. The buffer support frame is disposed on the upper side of the buffer connecting rod; the buffer slider is disposed on the buffer support frame; and the buffer spring is sleeved on the buffer support frame.

[0015] In one or more embodiments of the present invention, the buffer support frame is fixedly connected to the outer shell of the packaging box, and the buffer connecting rod is disposed between the buffer support frame and the contact plate.

[0016] In one or more embodiments of the present invention, the contact plate and the buffer support frame are both rotatably connected to the buffer connecting rod, and the buffer support frame is disposed through the buffer slider.

[0017] In one or more embodiments of the present invention, a buffer bearing is provided between the buffer slider and the buffer support frame.

[0018] Compared with the prior art, the wooden packaging box of the present invention, through the setting of the corresponding mechanism, can provide sufficient and effective cushioning when the bottom of the box is subjected to vertical impact, significantly prolonging the impact time and reducing the instantaneous impact acceleration, controlling the impact force transmitted to the box and the goods inside within a safe threshold. At the same time, the cushioning effect has good repeatability and fatigue resistance, and can maintain a consistent cushioning effect after multiple impacts, avoiding protection failure due to material performance degradation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a partial three-dimensional view of a wooden packaging box according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle; Figure 3 for Figure 1 Schematic diagram of the structure at point B; Figure 4 for Figure 1 Schematic diagram of the structure at point C; Figure 5 This is a perspective sectional view of a wooden packaging box according to an embodiment of the present invention; Figure 6 for Figure 5 Schematic diagram of the structure at point D; Figure 7 This is a perspective view of a wooden packaging box according to an embodiment of the present invention.

[0021] Explanation of key figure labels: 1-Packaging box shell, 2-Slow descent mechanism, 21-Contact assembly, 211-Contact plate, 212-Contact pad, 213-Contact rod, 22-Slow descent assembly, 221-Slow descent chamber, 222-Slow descent plate, 223-Slow descent rod, 224-Slow descent spring, 225-Slow descent sealing ring, 226-Slow descent bearing, 3-Buffer mechanism, 31-Buffer connecting rod, 32-Buffer assembly, 321-Buffer support frame, 322-Buffer slider, 323-Buffer spring, 324-Buffer bearing. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0023] like Figures 1 to 7 As shown, a wooden packaging box in one embodiment of the present invention includes: a packaging box shell 1, a slow-descent mechanism 2, and a cushioning mechanism 3. The packaging box shell 1 serves as the main structure carrying the internal goods, and its bottom is the critical area that bears vertical impact loads during stacking, loading, unloading, and transportation. The slow-descent mechanism 2 includes a pair of contact components 21 respectively disposed on both sides of the packaging box shell 1 and a pair of slow-descent components 22 disposed on the upper side of the contact components 21. The symmetrically arranged contact components 21 and slow-descent components 22 together form a dual-support, synchronously responsive cushioning system. This paired symmetrical structure ensures that when the bottom of the packaging box is subjected to a vertical impact from the ground, the impact force can be evenly distributed to both sides of the box, avoiding tilting, rolling, or local structural damage caused by excessive force on one side, thereby significantly improving the posture stability and overall safety of the packaging box under dynamic impact conditions. The cushioning mechanism 3 includes a cushioning connecting rod 31 disposed on the upper side of the contact components 21 and a cushioning component 32 disposed on the upper side of the cushioning connecting rod 31. Buffer mechanism 3 serves as a parallel auxiliary energy dissipation path for descent mechanism 2, forming a composite buffer architecture that is spatially stacked and functionally complementary with descent mechanism 2. In this architecture, descent mechanism 2 is mainly responsible for smoothly suppressing the impact velocity by controlling the reduction of motion speed to smooth out the impact acceleration; while buffer mechanism 3 is mainly responsible for elastically storing and gradually releasing the impact displacement. The two respond synchronously in time and complement each other in function, jointly constructing a comprehensive buffer system that combines velocity-sensitive damping dissipation and displacement-sensitive elastic energy storage, thus being able to cope with various complex impact conditions from low-frequency heavy loads to high-frequency light loads.

[0024] like Figures 1 to 4As shown, the contact assembly 21, as the initial link in the entire buffer system that senses and receives external impact loads, specifically includes: a contact plate 211, a contact pad 212, and a pair of contact rods 213. The contact plate 211 is located on the lower side of the packaging box shell 1. The contact plate 211 has a plate-like structure, and its large lower surface provides ample mounting support area for the contact pad 212 below. Its upper surface maintains a certain distance from the bottom of the packaging box shell 1. This distance is the effective buffer stroke space that the deceleration mechanism 2 and the buffer mechanism 3 can utilize when subjected to impact. In the static load-bearing state, the main function of the contact plate 211 is to evenly bear the gravity load generated by the packaging box shell 1 and the goods inside, and to distribute the concentrated load to the contact rods 213 on both sides through its own bending stiffness. This effectively avoids the local crushing or deformation caused by the load concentrating at a certain point on the bottom of the box, and significantly improves the balance and structural durability of the packaging box shell 1 during long-term use. When a dynamic impact occurs, the contact plate 211 acts as the first-level platform for receiving and transmitting the impact force. It rapidly and synchronously transmits the transient impact force from the contact pad 212 to a pair of contact rods 213 that are fixedly connected to it, ensuring that the impact energy can be transferred from the bottom periphery of the box to the core working area of ​​the deceleration mechanism 2 in a very short time. The contact pad 212 is located on the lower side of the contact plate 211. As the component that directly contacts the ground, forks, or lower stacked boxes at the very bottom of the entire packaging box, the contact pad 212 participates in the work at the initial moment of the vertical impact. When the contact pad 212 collides with the contact surface, its inherent elasticity causes it to undergo local compression deformation first. This local deformation can absorb the high-frequency oscillation components in the impact energy spectrum at the initial stage of the impact, "shaving off" the originally steep and sharp impact acceleration peak, thus providing a relatively gentle initial excitation signal for the smooth intervention of the subsequent deceleration mechanism 2 and buffer mechanism 3. This pre-filtering function is of great significance for protecting the precision components inside the box from microscopic impact damage. Simultaneously, the deformation process of the contact pad 212 also prolongs the time history of the impact force being transmitted from the contact surface to the contact plate 211. Although this extension is limited, from the perspective of impact dynamics, any extension of the impact time helps to reduce the instantaneous acceleration amplitude, thereby reducing the impact load transmitted to the outer shell 1 and the internal goods of the packaging box. A pair of contact rods 213 are disposed on the upper side of the contact plate 211. The two contact rods 213 stand upright on the left and right sides of the contact plate 211, respectively. Their lower ends are fixedly connected to the contact plate 211, and their upper ends extend into the interior of the deceleration assembly 22. As a key motion transmission element connecting the contact plate 211 and the deceleration assembly 22, the contact rods 213 accurately and without distortion transmit all the displacement and force conditions of the contact plate 211 in the vertical direction upwards, thereby driving the corresponding components in the deceleration assembly 22 to produce synchronous movement.The symmetrical arrangement of the two contact rods 213 also serves as a guide and anti-deflection mechanism. When the contact plate 211 is subjected to asymmetrical impact or eccentric force, the two contact rods 213 can generate a resistance moment through their sliding engagement with the deceleration chamber 221, thereby effectively suppressing the tilting tendency of the contact plate 211 and ensuring that the contact plate 211 always moves in a horizontal position. This is crucial for maintaining the uniformity and stability of the hydraulic damping inside the deceleration assembly 22. The contact pad 212 is fixedly connected to the contact plate 211. This fixed connection ensures that there is no relative displacement or separation between the contact pad 212 and the contact plate 211 during the impact process, ensuring the continuity and directness of the force transmission path, improving the fixing effect and positional stability of the contact pad 212 under repeated impact conditions, and also avoiding unnecessary energy loss and component wear caused by the relative friction between the two. The contact plate 211 is fixedly connected to the contact rod 213. This rigid connection allows the contact rods 213 on both sides of the contact plate 211 to move upward in strict synchronization, avoiding movement lag or asynchrony caused by connection gaps or looseness. This significantly reduces the probability of the contact plate 211 tilting during dynamic movement, ensuring the balance of force on both sides of the entire descent mechanism 2 and the consistency of movement.

[0025] like Figures 1 to 5As shown, the descent control assembly 22, as the core damping unit for active control of impact velocity in this invention, specifically includes: a descent chamber 221, a descent plate 222, a descent rod 223, and a descent spring 224. The descent chamber 221 is located above the contact rod 213. The descent chamber 221 is a shell structure with an internal cavity, and its outer contour is fixedly connected to the inner sidewall or bottom crossbeam of the packaging box shell 1, thereby firmly positioning the entire descent control assembly 22 on the packaging box shell 1. The internal cavity of the descent chamber 221 provides a precise sliding guide space for the descent plate 222. The cross-sectional shape of this cavity matches the outer edge contour of the descent plate 222, allowing the descent plate 222 to slide reciprocally only along the axial direction of the descent chamber 221, without radial displacement or deflection, thus ensuring the guiding accuracy and stability of the descent plate 222 during movement. Simultaneously, the internal cavity of the deceleration chamber 221 forms two dynamically variable chambers on the upper and lower sides of the deceleration plate 222, which can be used to contain hydraulic oil and other flowing media. When the deceleration plate 222 slides upward along the inner wall of the deceleration chamber 221 under the push of the contact rod 213, the volume of the chamber above the deceleration plate 222 gradually decreases, forcing the hydraulic oil in that chamber to be squeezed through a preset flow channel to the chamber below the deceleration plate 222 or other oil storage space. During this squeezing flow process, intense internal friction and viscous shearing occur between hydraulic oil molecules and between the hydraulic oil and the wall of the flow channel, converting the mechanical kinetic energy of the deceleration plate 222 into the heat energy of the liquid and dissipating it into the surrounding environment. This energy conversion process is physically manifested as a strong dependence on the sliding speed of the deceleration plate 222; that is, the faster the sliding speed of the deceleration plate 222, the greater the velocity gradient of the hydraulic oil flow, and the greater the viscous resistance generated, thereby achieving strong suppression of high-speed impact. This speed-sensitive damping characteristic allows the descent control assembly 22 to adaptively adjust the damping force under impacts of varying intensities, achieving intelligent impact protection. The descent control plate 222 is located within the descent chamber 221. As the core moving element within the chamber, it converts the mechanical displacement transmitted by the contact rod 213 into linear sliding and generates damping force through its interaction with the hydraulic oil. The periphery of the descent control plate 222 maintains a precise fit with the inner wall of the chamber 221 to effectively compress the hydraulic oil during sliding. Simultaneously, several flow grooves carved into the descent control plate 222 provide a precisely controllable throttling channel for the exchange of hydraulic oil between the two chambers. By adjusting the equivalent flow area of ​​the flow grooves, the flow resistance of the hydraulic oil can be finely controlled, thereby obtaining an ideal damping force-speed characteristic curve. The deceleration rod 223 is located on the upper side of the deceleration plate 222. The deceleration rod 223 extends vertically upward from the center of the upper surface of the deceleration plate 222 and extends through the upper wall of the deceleration chamber 221 to the outside of the deceleration chamber 221.The deceleration rod 223 slides in the guide hole on the upper wall of the deceleration chamber 221. Its engagement with the guide hole provides additional support and guiding constraint to the upper part of the deceleration plate 222, effectively preventing the deceleration plate 222 from jamming or tilting when subjected to eccentric torque, further improving the motion balance and sliding smoothness of the deceleration plate 222. The deceleration spring 224 is sleeved on the outside of the deceleration rod 223. The lower end of the deceleration spring 224 abuts against the upper surface of the deceleration plate 222, and its upper end abuts against the top of the inner wall of the deceleration chamber 221 or the corresponding spring seat surface. When the deceleration plate 222 slides upward under impact, the deceleration spring 224 is compressed, thereby converting a portion of the impact kinetic energy into the elastic potential energy of the spring and storing it. The compression process of the deceleration spring 224 is a gradual process; its elastic force increases linearly or non-linearly with the increase of the compression amount. This elastic force is always opposite to the direction of the impact force, thus providing a gradually increasing resistance component for the upward movement of the deceleration plate 222. When the external impact ends and the external force on the contact plate 211 is removed, the elastic potential energy stored in the compressed deceleration spring 224 is released. Its downward elastic force pushes the deceleration plate 222 down along the inner wall of the deceleration chamber 221, thereby restoring the deceleration plate 222, contact rod 213, contact plate 211, and contact pad 212 to their initial positions before the impact, preparing for the next impact. This automatic reset function gives the wooden packaging box of the present invention excellent reusability, eliminating the need for manual intervention or component replacement after each impact.

[0026] like Figures 1 to 6As shown, the contact rod 213 is installed through the deceleration chamber 221, meaning that the contact rod 213 enters from the lower end wall of the deceleration chamber 221 and extends into the interior of the deceleration chamber 221, connecting with or contacting the lower surface of the deceleration plate 222. This through-type installation ensures that the contact rod 213 can receive the displacement signal of the contact plate 211 outside the deceleration chamber 221 and directly transmit it to the deceleration plate 222 inside the deceleration chamber 221, achieving a seamless transition from external motion to internal damping. A deceleration sealing ring 225 is provided between the deceleration plate 222 and the deceleration chamber 221. The deceleration sealing ring 225 is embedded in the circumferential groove on the outer edge of the deceleration plate 222, and its outer lip is tightly fitted to the inner wall of the deceleration chamber 221. During the sliding process of the deceleration plate 222, the deceleration sealing ring 225 ensures a low-friction, smooth fit between the deceleration plate 222 and the inner wall of the deceleration chamber 221, while effectively preventing hydraulic oil in the internal cavity of the deceleration chamber 221 from leaking through the gap between the deceleration plate 222 and the inner wall of the deceleration chamber 221. This ensures the sealing of the internal cavity of the deceleration chamber 221 and guarantees the stable performance of the hydraulic damping effect. At the same time, the low-friction characteristics of the deceleration sealing ring 225 itself and the lubrication between it and the inner wall of the deceleration chamber 221 effectively reduce the dry friction resistance experienced by the deceleration plate 222 during sliding. This means that the resistance experienced by the deceleration plate 222 mainly comes from the viscous damping force of the hydraulic oil, rather than the Coulomb friction force between solids. As a result, the damping characteristics of the deceleration component 22 are purer, more controllable, and have good linearity. Several flow grooves are carved into the deceleration plate 222, penetrating its upper and lower surfaces. These grooves serve as the sole or primary channel for hydraulic oil to flow between the two chambers of the deceleration plate 222. When the deceleration plate 222 slides upwards, the hydraulic oil in the upper chamber is forced to flow through these grooves into the lower chamber under pressure. The cross-sectional dimensions and length of the flow grooves determine the flow resistance of the hydraulic oil, which in turn determines the magnitude of the damping force on the deceleration plate 222. By rationally designing the geometric parameters of the flow grooves, the deceleration assembly 22 can achieve the desired damping coefficient to meet the buffering requirements under different loads and impact conditions. The deceleration rod 223 penetrates the deceleration chamber 221, extending upwards from the upper surface of the deceleration plate 222 and exiting the upper wall of the deceleration chamber 221. One end of the rod outside the deceleration chamber 221 is a free end, which extends or retracts when the deceleration plate 222 slides, but does not have a fixed connection or interference with other external components.The deceleration spring 224 is located on the side of the deceleration plate 222 away from the contact rod 213, that is, above the deceleration plate 222. This arrangement allows the deceleration spring 224 to be compressed when the deceleration plate 222 moves upward under impact, with its elastic force directed vertically downward, opposite to the impact force, effectively absorbing and storing impact energy. Simultaneously, after the impact, the elastic force of the deceleration spring 224 remains vertically downward, enabling it to push the deceleration plate 222 back to its initial lower position, thus unifying the functions of reset drive and energy absorption. Deceleration bearings 226 are provided between both the deceleration rod 223 and the contact rod 213 and the deceleration chamber 221, respectively installed in guide holes on the upper and lower end walls of the deceleration chamber 221. The inner ring of the deceleration bearing 226 mates with the outer circle of the deceleration rod 223 or contact rod 213, while its outer ring mates with the inner wall of the guide hole of the deceleration chamber 221. When the deceleration rod 223 or contact rod 213 reciprocates in the guide hole, the rolling elements inside the deceleration bearing 226 transform the sliding friction that originally existed between the shaft and the hole into rolling friction, thereby reducing the coefficient of friction by more than an order of magnitude. This not only significantly reduces the frictional resistance during movement, allowing more impact energy to be effectively used for hydraulic damping dissipation and spring energy storage, rather than being consumed in useless frictional heat generation, but also significantly reduces the wear rate among the deceleration rod 223, contact rod 213, and deceleration chamber 221. This greatly improves the service life and movement accuracy of these key moving parts under long-term, high-frequency impact conditions, ensuring that the deceleration assembly 22 maintains stable and reliable cushioning performance throughout the entire service life of the packaging box.

[0027] like Figures 1 to 5As shown, the buffer assembly 32, as another impact energy dissipation and storage path parallel to the descent assembly 22 in this invention, specifically includes: a buffer support frame 321, a buffer slider 322, and a buffer spring 323. The buffer support frame 321 is disposed on the upper side of the buffer connecting rod 31. The buffer support frame 321 is a rod-shaped or track-shaped structure with a guiding function, and it is fixedly installed on the side wall or bottom frame of the packaging box shell 1, providing precise linear sliding guidance for the buffer slider 322. The arrangement direction of the buffer support frame 321 can be horizontal or inclined, and its specific orientation is adapted to the geometry and movement trajectory of the buffer connecting rod 31, so as to efficiently convert the vertical displacement of the contact plate 211 into the linear displacement of the buffer slider 322 along the buffer support frame 321. The buffer support frame 321 not only facilitates the smooth sliding of the buffer slider 322, but also constrains the direction of movement of the buffer slider 322 through its own structural rigidity, ensuring that the buffer slider 322 will not derail or wobble during dynamic movement, thereby guaranteeing the stability and reliability of the buffering process. The buffer slider 322 is mounted on the buffer support frame 321. As the motion actuator in the buffer assembly 32, the buffer slider 322 is sleeved on the outer periphery of the buffer support frame 321 and can slide freely along the axial direction of the buffer support frame 321. When the buffer slider 322 slides along the buffer support frame 321 under the pushing or pulling action of the buffer connecting rod 31, it directly contacts one end of the buffer spring 323 and transmits the force it receives to the buffer spring 323, thereby driving the buffer spring 323 to undergo compression deformation. The sliding stroke of the buffer slider 322 directly determines the compression of the buffer spring 323, and thus determines the magnitude of the elastic potential energy stored in the buffer spring 323 and the magnitude of the reaction force it generates. By rationally designing the length of the buffer support frame 321 and the free height of the buffer spring 323, the buffer slider 322 can obtain sufficient sliding stroke. This allows for the full absorption of impact energy without increasing the vertical buffer space, utilizing a larger stroke space in the horizontal or inclined direction. This is particularly valuable for packaging box applications where vertical installation space is limited. The buffer spring 323 is fitted onto the buffer support frame 321. One end of the buffer spring 323 abuts against the buffer slider 322, and the other end abuts against the end fixing seat of the buffer support frame 321 or a corresponding limiting structure on the outer shell 1 of the packaging box. When the buffer slider 322 slides along the buffer support frame 321 and compresses the buffer spring 323 under impact, the buffer spring 323 undergoes elastic compression deformation, converting the impact kinetic energy into the elastic potential energy of the spring. Unlike the hydraulic damping energy dissipation in the slow-descent assembly 22, the energy storage process of the buffer spring 323 is reversible. That is, after the impact ends, the elastic potential energy stored in the buffer spring 323 will be released, pushing the buffer slider 322 to slide in the opposite direction along the buffer support frame 321, thereby pushing the contact plate 211 back to the initial position through the buffer connecting rod 31.The elastic characteristic curve of the buffer spring 323 can be linear or nonlinear. Different characteristic curves correspond to different buffer force-displacement relationships. It can be adaptively selected according to the sensitivity of the actual protected object to the peak acceleration to achieve the optimal buffer protection effect.

[0028] like Figures 1 to 7As shown, the buffer support frame 321 is fixedly connected to the outer shell 1 of the packaging box. This fixed connection ensures that the buffer support frame 321 will not shift or deform when bearing the dynamic load transmitted from the buffer slider 322, thus providing a stable installation foundation and precise guiding reference for the buffer assembly 32. Simultaneously, the fixed connection also ensures that the reaction force generated by the buffer spring 323 can be reliably transmitted to the outer shell 1 of the packaging box, forming a closed force system balance. The buffer connecting rod 31 is disposed between the buffer support frame 321 and the contact plate 211. As an intermediate force transmission component connecting the contact plate 211 and the buffer slider 322, its lower end is hinged to the upper surface or side of the contact plate 211, and its upper end is hinged to the corresponding connection point of the buffer slider 322. When the contact plate 211 shifts vertically, this shift is transmitted to the buffer slider 322 through the lever or connecting rod action of the buffer connecting rod 31, causing the buffer slider 322 to slide along the buffer support frame 321 accordingly. The presence of the buffer connecting rod 31 converts the vertical movement direction of the contact plate 211 into the horizontal or inclined movement direction of the buffer slider 322, realizing a conversion of the motion dimension. This allows the buffer spring 323 to obtain sufficient installation and deformation space in the horizontal direction, effectively solving the problem of limited buffer stroke in the vertical direction. Both the contact plate 211 and the buffer support frame 321 are rotatably connected to the buffer connecting rod 31, that is, both ends of the buffer connecting rod 31 are connected to the contact plate 211 and the buffer slider 322 respectively through rotating pairs such as pins or ball joints. This rotatable connection method allows the relative angle of the connection points at both ends of the buffer connecting rod 31 to be freely adjusted according to the position changes of the contact plate 211 and the buffer slider 322 during the transmission of motion and force. This avoids motion interference, additional bending moment, or jamming caused by rigid connection, ensuring smooth, efficient, and impact-free force transmission. At the same time, the rotatable connection also reduces the stress concentration at the connection point under dynamic load, effectively extending the fatigue life of the buffer connecting rod 31 and its connecting parts. The buffer support frame 321 is configured to pass through the buffer slider 322, meaning the buffer slider 322 is fitted over the buffer support frame 321, with the buffer support frame 321 passing through the central through-hole of the buffer slider 322. This through-type configuration ensures maximum contact guide length between the buffer slider 322 and the buffer support frame 321, effectively suppressing any tilting or deflection that may occur during the sliding process. This guarantees the ability of the buffer slider 322 to slide smoothly along the buffer support frame 321 over long strokes, allowing the buffer spring 323 to be compressed evenly and preventing lateral bending or excessive local stress in the buffer spring 323 caused by the tilt of the buffer slider 322. A buffer bearing 324 is provided between the buffer slider 322 and the buffer support frame 321, installed within the central through-hole of the buffer slider 322, with its inner ring mating with the outer circle of the buffer support frame 321.As the buffer slider 322 slides along the buffer support frame 321, the rolling elements within the buffer bearing 324 convert sliding friction into rolling friction, significantly reducing the coefficient of friction between the moving pairs, minimizing ineffective energy loss in the friction process, and increasing the proportion of effective impact energy absorbed by the buffer spring 323. Simultaneously, the application of rolling friction also greatly reduces the wear rate of the buffer slider 322 and the buffer support frame 321, improving the motion accuracy and performance stability of the buffer assembly 32 during long-term use, ensuring that the buffer assembly 32, like the deceleration assembly 22, maintains a consistent buffering effect after multiple repeated impacts.

[0029] The following section, combining the structure and connection relationships of the aforementioned components, details the complete working process and synergistic mechanism of the wooden packaging box of the present invention under vertical impact. During unloading, transfer, or stacking, when the packaging box's bottom contact pad 212 first contacts and collides with the ground or the surface of the lower box, the contact pad 212 immediately undergoes local elastic deformation, initially filtering and absorbing the high-frequency oscillation components in the initial stage of the impact, while simultaneously extending the impact time. Subsequently, the impact force is transmitted through the contact pad 212 to the contact plate 211, which evenly distributes the received impact force to a pair of contact rods 213 fixedly connected to its two sides. Driven by the impact force, the two contact rods 213 move upward synchronously. The upward movement of the contact rods 213 directly pushes the deceleration plate 222 inside the deceleration chamber 221 to slide upward along the inner wall of the deceleration chamber 221. As the deceleration plate 222 slides upward, it first exerts a squeezing effect on the hydraulic oil above it, forcing the oil to flow through the flow groove on the plate to the chamber below. The hydraulic oil experiences significant flow resistance due to the throttling effect as it flows through the flow groove. This resistance acts as a damping force on the deceleration plate 222, in the opposite direction to its movement, thus strongly inhibiting its upward movement. This inhibition limits the upward speed of the deceleration plate 222, thereby smoothing out the rising speed of the contact plate 211 relative to the outer shell 1 of the packaging box, achieving a "peak-shaving" effect on the impact acceleration. At the same time, the upward movement of the deceleration plate 222 also compresses the deceleration spring 224 sleeved on the outside of the deceleration rod 223. After being compressed, the deceleration spring 224 generates an elastic force in the opposite direction of movement. This elastic force also acts on the deceleration plate 222, further increasing the resistance to the upward movement of the deceleration plate 222 and converting some of the impact kinetic energy into the elastic potential energy of the spring for storage.

[0030] At the same moment that the contact plate 211 moves upward, the buffer connecting rod 31, which is rotatably connected to the contact plate 211, is also driven synchronously. The upward movement of the contact plate 211 pushes the lower end of the buffer connecting rod 31 upward, while the upper end of the buffer connecting rod 31 pushes the buffer slider 322 to slide along the buffer support frame 321 in the direction of compressing the buffer spring 323. During the sliding process, the buffer slider 322 gradually compresses the buffer spring 323. After being compressed, the buffer spring 323 generates an elastic reaction force proportional to the amount of compression. This reaction force is transmitted back to the contact plate 211 through the buffer connecting rod 31, further resisting the upward movement of the contact plate 211 and converting another part of the impact kinetic energy into the elastic potential energy of the buffer spring 323 for storage.

[0031] As can be seen from the above process, the impact energy generated by a complete vertical impact is absorbed in multiple stages over time, and distributed along three parallel paths: hydraulic damping dissipation, energy storage by the deceleration spring 224, and energy storage by the buffer spring 323. The hydraulic damping path irreversibly converts the impact energy into heat energy and dissipates it, playing a major role in energy dissipation. The deceleration spring 224 and buffer spring 323 reversibly convert the impact energy into elastic potential energy, slowly releasing this energy after the impact, thus acting as energy buffers and delaying its release. These three paths complement each other, jointly achieving efficient absorption of impact energy and effective suppression of impact acceleration. Once the external impact load is completely released, the elastic potential energy stored in the deceleration spring 224 and the buffer spring 323 is released simultaneously: the deceleration spring 224 pushes the deceleration plate 222 downward, and the deceleration plate 222 pushes the contact plate 211 downward through the contact rod 213; the buffer spring 323 pushes the buffer slider 322 to slide in the opposite direction, and the buffer slider 322 pushes the contact plate 211 downward through the buffer connecting rod 31. Under the combined push of both, the contact plate 211, contact pad 212, contact rod 213, and deceleration plate 222 all smoothly return to their initial positions before the impact, and the entire system automatically completes the reset, making full preparations for the next possible impact.

[0032] Throughout the impact and reset process, the deceleration seal 225 ensures no leakage of hydraulic oil inside the deceleration chamber 221, guaranteeing the continuous stability of the damping force. The deceleration bearing 226 and the buffer bearing 324 respectively ensure minimal motion friction between the deceleration rod 223, the contact rod 213 and the deceleration chamber 221, and between the buffer slider 322 and the buffer support frame 321, making each impact and reset process smooth and without jamming, and significantly reducing the wear of the moving parts, thus ensuring the long service life of the system. Since the deceleration spring 224 and the buffer spring 323 operate within their respective elastic limit ranges throughout the buffering process, irreversible plastic deformation will not occur, and the hydraulic oil will not deteriorate or leak due to high temperature. Therefore, the buffering system of this invention has excellent fatigue resistance and performance retention capabilities. Even after thousands or even tens of thousands of repeated impacts, it can still maintain a consistent buffering effect, completely overcoming the inherent defects of traditional wooden packaging boxes that rely solely on rubber pads or wooden sleepers for buffering, such as limited buffering stroke, insufficient energy absorption effect, and unstable buffering performance due to easy aging and deformation of materials.

[0033] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for 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 can be understood by those skilled in the art.

Claims

1. A wooden packaging box, characterized in that, include: Packaging box outer shell; The slow-descent mechanism includes a pair of contact components respectively disposed on both sides of the outer shell of the packaging box and a pair of slow-descent components disposed on the upper side of the contact components; The buffer mechanism includes a buffer connecting rod disposed on the upper side of the contact component and a buffer component disposed on the upper side of the buffer connecting rod.

2. The wooden packaging box according to claim 1, characterized in that, The contact component includes: A contact plate is located on the lower side of the outer shell of the packaging box; A contact pad is disposed on the underside of the contact plate; A pair of contact rods are disposed on the upper side of the contact plate.

3. The wooden packaging box according to claim 2, characterized in that, The contact pad is fixedly connected to the contact plate, and the contact plate is fixedly connected to the contact rod.

4. The wooden packaging box according to claim 2, characterized in that, The descent control component includes: A deceleration chamber is located on the upper side of the contact rod; A deceleration plate is installed inside the deceleration chamber; A descent bar is provided on the upper side of the descent plate; A deceleration spring is sleeved on the outside of the deceleration rod.

5. The wooden packaging box according to claim 4, characterized in that, The contact rod passes through the slow-descent chamber, and a slow-descent sealing ring is provided between the slow-descent plate and the slow-descent chamber. Several flow grooves are cut into the slow-descent plate.

6. The wooden packaging box according to claim 4, characterized in that, The deceleration rod passes through the deceleration chamber, the deceleration spring is located on the side of the deceleration plate away from the contact rod, and both the deceleration rod and the contact rod are provided with deceleration bearings between themselves and the deceleration chamber.

7. The wooden packaging box according to claim 4, characterized in that, The buffer component includes: A buffer support frame is disposed on the upper side of the buffer connecting rod; A buffer slider is disposed on the buffer support frame; A buffer spring is fitted onto the buffer support frame.

8. The wooden packaging box according to claim 7, characterized in that, The buffer support frame is fixedly connected to the outer shell of the packaging box, and the buffer connecting rod is disposed between the buffer support frame and the contact plate.

9. The wooden packaging box according to claim 7, characterized in that, Both the contact plate and the buffer support frame are rotatably connected to the buffer connecting rod, and the buffer support frame is disposed through the buffer slider.

10. The wooden packaging box according to claim 7, characterized in that, A buffer bearing is provided between the buffer slider and the buffer support frame.

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