A portable, foldable beach table

Abstract

The application discloses a portable foldable beach table, comprising: a table top, at least one is provided; a support frame, rotatably installed below the table top, used for supporting the table top; a limiting mechanism, rotatably installed between the table top and the support frame, used for keeping a fixed state after the support frame is unfolded; the hammock assembly and the cooling assembly are directly integrated below the table top, and the cloth body is naturally hung down to form a supporting plane conforming to the physiological curvature of the spine through detachable binding after the support frame is unfolded. The carrying burden of redundant equipment such as independent folding deck chairs and moisture-proof soft cushions is eliminated. Through the continuous heat exchange of the circulating cold water medium through the serpentine flow channel in the interlayer, the temperature of the fabric contact surface is maintained in a constant comfortable interval. While maintaining the conventional table top load capacity, the full-function rest dimension is expanded, and the space reuse rate and user experience integrity of the coastal camping scene are significantly improved.

Description

Technical Field

[0001] This invention is a portable, foldable beach table, belonging to the field of table technology. Background Technology

[0002] With outdoor seaside leisure activities becoming increasingly popular, beach tables, as a basic supporting facility, are widely used in seaside camping, sunbathing, and water sports relaxation scenarios.

[0003] However, most existing beach tables on the market are limited to the functions of simply placing items and providing shade and rain protection. Their hard flat design does not take into account the physiological curves of the human body when leaning against or lying down for a long time.

[0004] When enjoying their time at the beach, users often experience rapid back muscle fatigue due to the lack of effective back support and a body-hugging structure, forcing them to carry separate rest equipment such as folding lounge chairs, inflatable mattresses, or moisture-proof mats. This combination of separate accessories not only significantly increases the weight and storage volume of travel, severely encroaching on usable beach space, but also makes it easy for different equipment to slip and tilt when used together on soft sand. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a portable foldable beach table to solve the problems in the existing technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] A portable, foldable beach table includes:

[0008] There must be at least one desktop background.

[0009] A support frame is rotatably mounted under the desktop to support the desktop;

[0010] A limiting mechanism is rotatably installed between the desktop and the support frame, and the limiting mechanism is used to keep the support frame in a fixed state after it is unfolded;

[0011] A hammock assembly is installed below the desktop. The hammock assembly includes a fabric body, and both ends of the fabric body are fixedly tied to both ends below the desktop.

[0012] A cooling component is disposed in the inner layer of the fabric, and the cooling component cools the side of the fabric that is in contact with the body.

[0013] The support rod is rotatably installed below both ends of the desktop, and the support frame is welded and fixed below the support rod;

[0014] The two ends of the fabric of the hammock assembly are fixed to the support rod by a detachable binding method, so that the fabric forms a hammock structure that allows people to lie down when the support frame is unfolded.

[0015] The cooling component includes a pipeline connected to an external cold water source, which circulates cold water to cool the fabric.

[0016] As a further improvement, the desktop is provided in two parts, which are connected by a hinge so that the desktops can be folded relative to each other;

[0017] A set of connecting pieces is provided near the two desktop connection areas. The desktop is mounted on the connecting pieces by a pivot pin. A support rod is rotatably mounted between the two connecting pieces by a damping pivot. Two auxiliary rods are fixedly mounted on the support rod. A set of limiting mechanisms is provided between the two auxiliary rods.

[0018] The desktop has several perforations in the lower center area to reduce its weight.

[0019] As a further improvement, the support rod is rotatably mounted below both ends of the desktop via a damping pivot, the damping pivot being embedded inside the bottom of the desktop.

[0020] As a further improvement, the hammock assembly also includes fabric pieces, which are sewn to both ends of the fabric body. The fabric pieces are rolled up to form a cylindrical shape, and the adjacent sides of the fabric pieces are sewn together and fixed by zippers. After the fabric pieces are pulled together by the zippers, they are wrapped around and fixed to the support rod.

[0021] As a further improvement, the fabric body includes an upper fabric and a lower fabric, the upper fabric and the lower fabric are sewn together and fixed, and a tortuous channel is provided between the upper fabric and the lower fabric.

[0022] As a further improvement, the cooling component's piping is installed inside the tortuous channel, an insulation layer is attached to the bottom of the piping, the insulation layer is sewn and fixed to the lower layer of fabric, and the top of the piping directly abuts against the upper layer of fabric.

[0023] The outlet and inlet ends of the pipeline are inserted and fixed to the short side of the desktop. Water is input through the inlet end via an external water pump and a cold water tank, and the outlet end returns to the cold water tank.

[0024] As a further improvement, a pressure sensor is also included, which is embedded in the upper center of the support rod, located in the coverage area of ​​the fabric.

[0025] As a further improvement, it also includes strip-shaped airbags, which are embedded in slots on both sides of the desktop; an inlet pipe and an outlet pipe, which are embedded inside the desktop, with the ends of the inlet pipe and the outlet pipe respectively inserted into two sets of strip-shaped airbags; and a four-way solenoid valve, which is embedded inside the desktop, with the inlet pipe and the outlet pipe connected in the middle through the four-way solenoid valve, and the four-way solenoid valve is provided with an inlet and an outlet.

[0026] Several elastic ropes are sewn and fixed inside the strip-shaped airbag. When the strip-shaped airbag deflates, it returns to its original position and enters the slot through the elastic ropes.

[0027] As a further improvement, the desktop side is provided with a slot, and an external threaded post is provided in the slot. The air inlet is located in the middle of the external threaded post, and an electrical port is provided on one side of the air inlet. An electrical plug is provided on the side of the external air pump's tube. An internal threaded sleeve that matches the external threaded post is fitted on the outside of the tube. The tube is inserted into the air inlet, and the electrical plug is inserted into the electrical port. The internal threaded sleeve and the external threaded post are threaded together and locked.

[0028] It also includes a control unit, which is electrically connected to the four-way solenoid valve, air pump, water pump, and pressure sensor, and is used to control the operation of the cooling component and the strip airbag.

[0029] As a further improvement, the limiting mechanism includes a first auxiliary rod, a second auxiliary rod, a fixed crossbar, a limiting protrusion, and a limiting ring;

[0030] The first auxiliary rod is rotatably mounted on the inner side of the desktop, and the ends of the two first auxiliary rods are welded and fixed; the fixed crossbar is located below the center of the desktop, and the second auxiliary rod is rotatably mounted on the fixed crossbar, and the end of the second auxiliary rod is rotatably connected to the ends of the two first auxiliary rods through a pivot pin;

[0031] The limiting protrusion is located on the side of the second auxiliary rod near the shaft pin, and the limiting ring is located on one side of the limiting protrusion.

[0032] Beneficial effects

[0033] 1. This invention integrates the hammock assembly and cooling components directly beneath the tabletop. A detachable binding method allows the fabric to hang naturally after the support frame is unfolded, forming a supportive surface that conforms to the physiological curvature of the spine. This breaks away from the limitations of traditional beach tables that only offer storage and sunshade functions, eliminating the need for carrying redundant equipment such as separate folding lounge chairs and moisture-proof mats. Continuous heat exchange via a circulating cold water medium through a serpentine flow channel within the interlayer maintains the fabric contact surface temperature within a constant and comfortable range. By maintaining the load-bearing capacity of a conventional tabletop while expanding into a full-function rest area, it significantly improves the space utilization rate and user experience integrity in coastal camping scenarios.

[0034] 2. A rotating support structure with a hinged folding panel and an embedded rotary damping shaft, combined with a zipper coil sleeve, achieves circumferential adaptive anchoring. The two-way waterproof zipper generates a uniform radial clamping reaction force upon closure, completely replacing the drawbacks of traditional nylon webbing (prone to wear and breakage) and Velcro (due to weakened adhesion). By significantly compressing the lateral folded volume while ensuring the torsional stiffness of the unfolded configuration, it can adapt to uneven settlement deformation in soft sandy terrain, while also ensuring portability for frequent migrations.

[0035] 3. A wavy, interconnected chamber is formed by hot-pressing between the upper composite fabric and the lower flame-retardant canvas, and a high-resistance thermal insulation layer is attached to the bottom of the cooling pipes to create a directional cold energy transfer path. The low-temperature liquid working fluid extends its average residence time within the winding channel to fully absorb infrared radiation heat from the body surface, while the insulation layer forcibly constructs a thermal resistance barrier to prevent cold energy from dissipating downwards. The closed-loop circulation eliminates the risk of condensation dripping and soaking clothing, resulting in a simultaneous leap in cooling efficiency and temperature control accuracy. Compared to the turbulent airflow of traditional air guides and the insufficient heat dissipation area of ​​static heat-conducting pads, this fluid microenvironment regulation mechanism achieves a pressure-free, close-fitting, and constant-temperature fit, significantly optimizing thermal comfort under extreme summer sunlight conditions.

[0036] 4. A thin-film piezoresistive sensor array is pre-embedded in the core load-bearing area to collect load amplitude in real time and feed back displacement differential electrical signals to the central control unit. When the equivalent human body weight exceeds a preset trigger threshold, the centrifugal water pump is automatically activated to establish cooling medium flow and to control the deployment of the strip-shaped airbag to expand the sunshade area. This also serves as a notification that someone is resting. After the person gets up, this closed-loop sensing link completely cuts off the ineffective power consumption output in the unattended state. The water pump stops working, and the four-way solenoid valve switches to exhaust mode to expel the gas inside the strip-shaped airbag, changing the operating logic from a continuous energy consumption mode to an on-demand response paradigm. Compared with traditional continuously starting cooling circuits, this effectively extends the battery life of the external power supply, meets the low-carbon and energy-saving requirements of lightweight outdoor equipment, and reduces the maintenance costs of frequent power replenishment.

[0037] 5. By embedding strip-shaped airbags within a pre-fabricated cavity on the side of the desktop, and using a four-way solenoid valve to switch between forward and reverse air paths, dynamic inflation and deflation are achieved. The deployment of these strip-shaped airbags expands the sunshade area on both sides of the desktop, making the user more comfortable.

[0038] 6. By integrating the third-party gas source tubing with the power supply terminal, simultaneous installation is possible. The internal threaded sleeve and external threaded post are used for a secure connection, and a three-dimensional mechanical and electrical locking mechanism is achieved through tightening. This enhances the equipment's overall adaptability to complex tidal weather conditions and sudden collisions.

[0039] 7. The unfolded support frame is fixed and limited by a limiting mechanism. The bottom surface of the limiting protrusion rigidly abuts against the inner arc wall of the annular retaining ring, completely blocking subsequent relative angular displacement. The bending moment load is redistributed through the multi-point contact interface of the limiting ring, evenly distributing the impact stress originally concentrated on one side of the hinge to the entire constrained topology. This eliminates the axial movement margin and accidental overturning hazards common in semi-open structures. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the three-dimensional structure of a portable foldable beach table according to the present invention.

[0042] Figure 2 This is a schematic diagram of the structure of a portable foldable beach table according to the present invention, viewed from below.

[0043] Figure 3 This is a schematic diagram of the unfolded use state of a portable foldable beach table according to the present invention.

[0044] Figure 4 This is a schematic diagram of a beach folding and storage state according to the present invention.

[0045] Figure 5 This is a top view schematic diagram of a hammock assembly according to the present invention.

[0046] Figure 6 yes Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0047] Figure 7 This is a top view schematic diagram of a portable foldable beach table according to the present invention.

[0048] Figure 8This is a diagram showing the usage state of a portable foldable beach table and detachable hammock assembly according to the present invention.

[0049] Figure 9 This is a connection diagram of a portable foldable beach table module according to the present invention.

[0050] 1. Desktop; 2. Support frame; 3. Limiting mechanism; 4. Hammock assembly; 41. Fabric body; 5. Cooling assembly; 51. Piping; 6. Support rod; 7. Hinge; 8. Damping pivot; 42. Fabric piece; 43. Zipper; 411. Upper fabric; 412. Lower fabric; 413. Twisted channel; 52. Insulation layer; 511. Outlet end; 512. Inlet end; 9. Water pump; 91. Air pump; 10. Pressure sensor; 11. Strip-shaped airbag; 12. Air inlet pipe; 13. Air outlet pipe; 14. Four Solenoid valve; 141, air inlet; 142, air outlet; 15, slot; 16, external threaded post; 17, power connection port; 18, insertion tube; 181, power plug; 19, internal threaded sleeve; 20, control unit; 31, first auxiliary rod; 32, second auxiliary rod; 33, fixed crossbar; 34, limiting protrusion; 35, limiting ring; 36, shaft pin; 111, elastic rope; 112, groove; 92, slot; 71, connecting piece; 72, support rod; 73, auxiliary rod; 74, hollow hole. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] Reference Figure 1-9As shown, a portable foldable beach table includes: a tabletop 1, at least one of which is provided; a support frame 2, rotatably mounted below the tabletop 1 for supporting the tabletop 1; and a limiting mechanism 3, rotatably mounted below the tabletop 1 and between the support frame 2, the limiting mechanism 3 being used to keep the support frame 2 in a fixed state after it is unfolded.

[0054] Hammock assembly 4 is installed below the tabletop 1. The hammock assembly 4 includes a fabric body 41, with both ends of the fabric body 41 fixedly tied to the two ends below the tabletop 1; a cooling component 5 is disposed in the internal interlayer of the fabric body 41, which cools the side of the fabric body 41 that is in contact with the body; and a support rod 6 is rotatably installed below both ends of the tabletop 1, with the support frame 2 welded and fixed below the support rod 6.

[0055] The hammock assembly 4 has its fabric 41 fixed to the support rod 6 at both ends by a detachable binding method, so that the fabric 41 forms a hammock structure for people to lie down in the unfolded state of the support frame 2; the cooling assembly 5 includes a pipe 51, which is connected to an external cold water source to cool the fabric 41 by circulating cold water.

[0056] The operator first inserts the support rod 6 through the hinge shaft and rotates it to the bottom sides of both ends of the tabletop 1. Then, the entire length of the support frame 2 is directly welded and fixed to the two ends of the support rod 6 away from the tabletop 1. After the basic frame is assembled, the user holds the support frame 2 with both hands and applies force outward to rotate it around the fulcrum to the predetermined opening angle.

[0057] When the support frame 2 moves to its limit stroke, the limiting mechanism 3, located below the table 1 and in the area where it intersects with the support frame 2, automatically triggers a mechanical interference effect, firmly locking the support frame 2 in its current horizontal posture, effectively eliminating deformation allowance and axial movement during subsequent load-bearing processes.

[0058] Next, take the fabric 41 of the hammock assembly 4, align the woven handles at both ends with the outer wall of the fully extended support rod 6, and use the quick-release buckles to perform a detachable binding operation. As the force points at both ends are tensioned simultaneously, the fabric 41 presents a naturally drooping arc-shaped pocket space under the pull of gravity, thus seamlessly switching to a lateral resting carrier that conforms to the physiological curvature of the spine, under the premise that the support frame 2 forms a stable triangular mechanical structure.

[0059] To address the heat load on the body surface, the cooling component 5 is pre-embedded in the composite interlayer between the upper and lower layers of the fabric 41. Its core pipeline 51 is arranged in a serpentine pattern along the warp and weft of the fabric and is connected to a portable sealed cold water tank with a waterproof joint. After the external water pump 9 is connected, the pre-cooled liquid medium is continuously injected into the pipeline 51 and flows directionally.

[0060] Fabric 41 is made of high-density tear-resistant fabric.

[0061] When a person leans against the arc-shaped area of ​​fabric 41, the high-density tear-resistant fabric directly absorbs the infrared heat radiation emitted by the human body. The coolant flowing in the interlayer exchanges heat bidirectionally through the polymer thermally conductive membrane, quickly drawing away excess heat from the body surface and dissipating it to the external environment, thus achieving real-time dynamic stabilization of the contact surface temperature. The return pipe 51 is responsible for guiding the heated working fluid after heat absorption back to the cold water tank for recooling, forming a highly efficient closed-loop microcirculation system.

[0062] Traditional standalone beach tables, limited by their fragmented physical form, force end users to bear heavy logistics costs. By utilizing the coordinated rotation of support rod 6 and support frame 2, the storage surface and the resting soft surface are topologically integrated, significantly reducing the proportion of redundant equipment and achieving a substantial improvement in space utilization. The intervention of limiting mechanism 3 completely overcomes the problem of torque imbalance in conventional folding furniture under variable cross-section conditions, giving the semi-open structure the same torsional stiffness, ensuring absolute force balance on uneven beach surfaces.

[0063] By introducing an active fluid circulation heat exchange paradigm, the cooling energy can reach the core heat dissipation points on the body surface directly through the adaptive fit of flexible fabrics, avoiding the pressure and pain caused by hard contact, and eliminating the problem of clothes getting wet due to direct dripping of condensate.

[0064] Existing single-panel beach tables occupy a large amount of vertical space when traveling long distances or being carried by vehicle. The conventional rigid splicing method limits the folding angle and makes the edges prone to bumps and damage, making it difficult to meet the needs of compact storage.

[0065] In this embodiment, there are two desktops 1, which are connected by a hinge 7, so that the desktops 1 can be folded relative to each other.

[0066] During actual assembly, an overlap area is reserved on the adjacent sides of the two rectangular panels. Stainless steel hinges are rigidly connected by countersunk screws passing through the alignment bolt holes. The operator holds the outer panel with both hands and applies torque in opposite directions. The damper inside the pivot provides a controllable rebound force, allowing the two panels to smoothly transition to a horizontal coplanar state. In the folded state, the two panels close like a book, reducing the total height by more than 40%.

[0067] During the folding process, the user needs to unlock the support frame 2 and fold it towards the bottom of the desktop 1 so that it fits against the lower surface of the desktop. Since the support rod 6 is rotatably installed at both ends of the desktop 1 through the damping pivot 8, it can rotate to a storage position parallel to the long side of the desktop under gravity or manual assistance, and be completely contained within the storage space enclosed by the two folded desktops, avoiding any inconvenience caused by protrusion.

[0068] A set of connecting pieces 71 is provided near the connection area of ​​the two desktops 1. The desktops 1 are mounted on the connecting pieces 71 by means of shaft pins. A support rod 72 is rotatably connected between the two connecting pieces 71 by means of a damping shaft 8. Two auxiliary rods 73 are fixedly installed on the support rod 72. A set of limiting mechanism 3 is provided between the two auxiliary rods 73.

[0069] It should be emphasized that the lower ends of the two auxiliary rods 73 are not connected and are in an open state to prevent interference with the hammock. At the same time, when using the hammock, the support rod 72 and the auxiliary rods 73 can be folded and stored. Furthermore, the support rod 72 will not fall off due to its own weight when folded and stored via the damping pivot 8. It can only be rotated when the user applies a downward pulling force by hand.

[0070] When a hammock is not needed, but heavy objects need to be placed on the tabletop 1, in order to protect the strength of the connection between the two tabletops 1, the support rod 72 and the auxiliary rod 73 can be flipped to contact the ground to form a central support.

[0071] When the hammock assembly 4 is not needed, it can be disassembled and stored. When heavy objects need to be placed on the tabletop 1, the support rod 72 can be rotated and unfolded to enhance the stability of the connection between the two tabletops 1. The strength of the connection area between the two tabletops 1 is enhanced by the cooperation of the support rod 72 and the connecting piece 71.

[0072] Several perforated holes 74 are provided in the lower central area of ​​the desktop 1 to reduce the weight of the desktop 1.

[0073] The connection between the traditional straight-welded support rod 6 and the base plate is prone to metal fatigue cracks during repeated opening and closing. Furthermore, the dry friction hinge without sealing treatment will attract sea salt crystals and sand particles, causing a sharp increase in rotational resistance or even jamming and scrapping, which directly affects the tension accuracy of the hammock fabric.

[0074] The support rod 6 is rotatably mounted below both ends of the desktop 1 via a damping shaft 8, which is embedded in a groove 112 inside the desktop 1.

[0075] The damping pivot 8 is a mechanism that provides constant or adjustable frictional resistance, allowing two relatively rotating parts to be stably suspended at any angle. In simpler terms, it ensures the pivot is neither too loose nor too tight—it can be turned by hand but won't fall off on its own. By tightening the locking nut, the disc spring is compressed, and the spring force is converted into normal force between the friction pads. When the support rod 6 rotates, a sliding frictional torque is generated between the friction surfaces. As long as this frictional torque is greater than the torque generated by the weight of the support frame 2, the table legs will not fall off and unfold due to gravity after folding; they must be rotated by hand over a certain resistance. Since the damping pivot 8 is conventional existing technology, it will not be described in detail.

[0076] The installation process begins with the prefabrication of a stepped countersunk cavity during the molding stage of the bottom shell mold on the desktop 1. The outer ring of the damping shaft 8 of the deep groove ball joint is then press-fitted into the predetermined position using a hydraulic press-fitting machine. The cylindrical end face of the support rod 6 is tightly pressed against the inner ring stop ring of the damping shaft 8 to complete axial positioning. During rotation, the precision steel balls undergo low-sliding friction pure rolling between the inner and outer raceways. The input torque is uniformly transmitted through the roller rows, achieving smooth and effortless posture changes.

[0077] Conventional methods of securing hammocks with ropes or Velcro are prone to causing the webbing to break under high-frequency tension, and uneven stress at a single point can lead to lateral slippage and deformation of the bed. Furthermore, they lack a quick alignment and circumferential self-adaptive locking mechanism.

[0078] The hammock assembly 4 also includes fabric pieces 42, which are sewn to both ends of the fabric body 41. The fabric pieces 42 are rolled up to form a cylindrical shape. The adjacent sides of the fabric pieces 42 are sewn and fixed by zippers 43. After the fabric pieces 42 are pulled together by the zippers 43, they are wrapped around and fixed to the support rod 6.

[0079] Before use, the operator expands the cylindrical sleeve radially so that its inner diameter is slightly larger than the outer diameter of the support rod 6 to be covered, and then pushes the column into the cavity. Both hands simultaneously pull the handle of the bidirectional self-locking waterproof zipper 43 axially. The nylon resin teeth interlock and trigger the wedge locking effect, causing the cylinder wall to naturally contract and conform to the curved surface of the cylinder. After closing, the sleeve achieves slip-free anchoring through circumferential elastic clamping force and static friction coefficient.

[0080] During disassembly, reverse the direction of zipper head 43 to release the interlocking teeth, and the sleeve will immediately spring back to release the clamping force. The inner wall of the sleeve features a uniformly distributed array of diamond-shaped silicone anti-slip protrusions, dynamically increasing the uniformity of normal pressure distribution on the contact surface. The edges of zipper track 43 are sealed using an ultrasonic welding and hot-pressing process, eliminating loose threads and rainwater penetration paths. The base material is made of 800 denier polyester twisted flame-retardant fabric, with a tensile strength exceeding 2500 Newtons. The wraparound fastening structure fundamentally replaces the tedious manual knotting process, improving deployment efficiency.

[0081] Single-layer fabrics lack the physical space to accommodate the cooling medium. If the refrigerant is in direct contact with the body surface, it can easily cause local vascular spasms and nerve tingling. Furthermore, the short residence time in straight flow channels leads to a rapid decay of the heat exchange temperature difference, making it difficult to maintain a constant comfort range.

[0082] The fabric body 41 includes an upper fabric 411 and a lower fabric 412, the upper fabric 411 and the lower fabric 412 are sewn together and fixed, and a tortuous channel 413 is provided between the upper fabric 411 and the lower fabric 412.

[0083] The upper fabric 411 and the lower fabric 412 are aligned and stacked according to a predetermined trajectory. After the tortuous pipe 51 is installed and fixed on the lower fabric 412, the upper fabric 411 is then sewn and fixed on the lower fabric 412. The upper fabric 411 and the lower fabric 412 are sewn and fixed along both sides of the pipe 51, so that the pipe 51 is stably placed inside the tortuous channel 413. The tortuous channel 413 is arranged as an S-shaped reciprocating bending channel structure.

[0084] Among them, the upper layer fabric 411 is the side that comes into contact with the human body.

[0085] Because exposed cooling hoses are at risk of puncture and leakage when people lean on them, and the cooling energy emitted by pipe 51 to the back is ineffective energy consumption, directly exposing the inlet and outlet liquid hard pipes not only disrupts the appearance continuity, but also poses a safety hazard of electrical short circuits caused by loose joints and water ingress.

[0086] The cooling component 5 has a pipe 51 installed inside the tortuous channel 413. An insulation layer 52 is attached to the bottom of the pipe 51. The insulation layer 52 is sewn and fixed to the lower layer of cloth 412. The top of the pipe 51 directly abuts against the upper layer of cloth 411.

[0087] The outlet end 511 and inlet end 512 of the pipeline 51 are inserted and fixed to the short side of the desktop 1. Water is input through the inlet end 512 via an external water pump 9 and a cold water tank, and the outlet end 511 returns to the cold water tank.

[0088] The 511 connection at the outlet end uses a quick connector. Since quick connectors are common existing components, this solution does not improve them, so they will not be described in detail.

[0089] Pipeline 51 is made of silicone flexible tubing, and insulation layer 52 is made of flexible polyurethane closed-cell foam material, polyurethane foam plastic or other insulation materials.

[0090] Flexible polyurethane closed-cell foam material is precisely cut according to the flow channel contour and then laid flat at the bottom of the silicone tube to construct a directional cold energy transmission path.

[0091] The external water pump 9 is a miniature centrifugal pump, which establishes a stable pressure difference to drive the medium to circulate back and forth. The insulation layer 52 is made of flame-retardant foam with low thermal conductivity, precisely constructing a thermal resistance barrier to force the full upward radiation replacement of cold energy. The pipeline 51 can withstand burst pressures higher than 1.5 MPa, and the joint sealing ring uses a fluororubber trapezoidal cross-section retaining ring to resist extreme temperature difference alternating stress without cracking.

[0092] Because the cooling circuit continues to operate when unsupported, it will cause the battery to discharge ineffectively and the working fluid to be consumed in idle state. The lack of a real-time load monitoring and feedback mechanism causes the control system to remain in high power consumption standby mode, shortening the overall driving range.

[0093] The hammock assembly 4 also includes a pressure sensor 10, which is embedded in the upper center of the support rod 6, located within the coverage area of ​​the fabric sheet 42. The pressure sensor 10 is electrically connected to the control unit 20.

[0094] When a person lies on the fabric 41, the pressure sensor 10 is pressed by the fabric 42 and transmits the signal to the control unit 20. The control unit 20 controls the external water pump 9 to start and perform cooling operation. Simultaneously, it controls the four-way solenoid valve 14 to switch the air inlet pipe 12 to connect with the air inlet 141 to the external insertion tube 18, and turns on the external air pump 91 to inflate the strip airbag 11, causing it to unfold and form a sunshade protection for the side of the tabletop 1.

[0095] When the human body is removed from the cloth body 41, the pressure sensor 10 is deactivated, the control unit 20 controls the external water pump 9 and air pump 91 to stop, and controls the four-way solenoid valve 14 to connect the air outlet pipe 13 and the air outlet 142 to discharge the gas inside the strip airbag 11.

[0096] Because the width of the tabletop 1 is limited, its effect on blocking sunlight is also limited, and sunlight may still shine directly on the human body. Therefore, in order to increase the sunshade area, the beach table also includes strip-shaped airbags 11, which are embedded in the slots 92 on both sides of the tabletop 1; an air inlet pipe 12 and an air outlet pipe 13 are embedded inside the tabletop 1, with the two ends of the air inlet pipe 12 and the air outlet pipe 13 respectively inserted into the two sets of strip-shaped airbags 11; and a four-way solenoid valve 14 is embedded inside the tabletop 1, with the middle of the air inlet pipe 12 and the air outlet pipe 13 connected by the four-way solenoid valve 14, which is provided with an air inlet 141 and an air outlet 142.

[0097] Several elastic ropes 111 are sewn and fixed inside the strip-shaped airbag 11. When the strip-shaped airbag 11 deflates, it returns to its original position and enters the slot 92 through the elastic ropes 111.

[0098] The strip-shaped airbag 11 is horizontally inserted into the prefabricated cavity along the side of the table 1. The inlet and outlet air passages are secured and locked to the air injection valve nozzle of the strip-shaped airbag 11 using a hose clamp. The electromagnetic reversing valve switches the conduction branch according to the command pulse. When air is vented in the forward direction, compressed air quickly fills the group of strip-shaped airbags 11 through the branch conduit, raising the local curvature of the surface. When air is evacuated in the reverse direction, the residual gas in the chamber is vented through the pressure relief valve to restore the flat initial configuration.

[0099] The front and rear ends of the two strip-shaped airbags 11 are inserted into the pre-made cavity on the side of the table 1. Therefore, the deployed strip-shaped airbags 11 will not easily detach from the table 1. The exhaust strip-shaped airbags 11 are also fixed inside the table 1 by the air inlet pipe 12 and the air outlet pipe 13, which indirectly fix the strip-shaped airbags 11, making it difficult for them to detach from the table 1.

[0100] The exposed placement of third-party air and power supply interfaces makes them susceptible to accidental collisions and detachment. The connection between the air pump 91 and the four-way solenoid valve 14 needs to be quick, sealed, and electrically interlocked to ensure safe and reliable inflation operations.

[0101] The desktop 1 has a slot 15 on its side, and an external threaded post 16 is provided in the slot 15. The air inlet 141 is located in the middle of the external threaded post 16, and a power connection port 17 is provided on one side of the air inlet 141. The external air pump's insertion tube 18 has a power connector 181 on its side. An internal threaded sleeve 19 that matches the external threaded post 16 is fitted on the outside of the insertion tube 18. The insertion tube 18 is inserted into the air inlet 141, and the power connector 181 is inserted into the power connection port 17. The internal threaded sleeve 19 is threadedly engaged with the external threaded post 16 and locked in place. The system also includes a control unit 20, which is electrically connected to the four-way solenoid valve 14, the air pump, the water pump 9, and the pressure sensor 10, and is used to control the operation of the cooling component 5 and the strip-shaped airbag 11.

[0102] In use, the user inserts the air pump tube 18 into the air inlet 141 inside the slot 15, and simultaneously inserts the power connector 181 into the power connector 17. Then, the user tightens the inner threaded sleeve 19 and the outer threaded post 16 to achieve mechanical locking and electrical connection. The insertion of the tube 18 into the air inlet 141 ensures airtightness. The engagement of the power connector 181 with the power connector 17 automatically connects the power circuit after the tube 18 is inserted. The air pump 91 can only be safely started after proper tightening. This quick-connect structure with threaded locking and electrical interlock prevents air leakage or electrical failure caused by misoperation, improving reliability and safety during outdoor use.

[0103] The control unit 20 coordinates and controls multiple actuators to achieve automated operation of cooling and airbag adjustment. It also includes a control unit 20, which is electrically connected to the four-way solenoid valve 14, air pump, water pump 9, and pressure sensor 10, and is used to control the operation of the cooling assembly 5 and the strip-shaped airbag 11.

[0104] In use, after the pressure sensor 10 detects a person lying down, the control unit 20 sends a start command to the water pump 9 according to a preset program, causing the cold water to circulate and cool. Simultaneously, based on pressure or manual commands, it controls the four-way solenoid valve 14 and the air pump to inflate or deflate the strip-shaped airbag 11. The control unit 20 is connected to various electrical components via electrical cables, enabling signal acquisition, logic judgment, and command output. The water pump 9 provides the power for cold water circulation, the four-way solenoid valve 14 controls the airflow path, the air pump 91 provides the air pressure source, and the pressure sensor 10 provides feedback. This reduces manual operation and improves overall convenience and comfort.

[0105] When open-type hinge joints encounter sudden external impacts or lack rigid end-point constraints, the frame is very prone to overturning or even instantaneously ejecting and impacting the user's finger joints, posing a serious risk of mechanical injury.

[0106] The limiting mechanism 3 includes a first auxiliary rod 31, a second auxiliary rod 32, a fixed crossbar 33, a limiting protrusion 34, and a limiting ring 35. The first auxiliary rod 31 is rotatably mounted on the inner side of the desktop 1, and the ends of the two first auxiliary rods 31 are welded and fixed. The fixed crossbar 33 is located below the center of the desktop 1, and the second auxiliary rod 32 is rotatably mounted on the fixed crossbar 33. The ends of the second auxiliary rod 32 are rotatably connected to the ends of the two first auxiliary rods 31 through a shaft pin 36. The limiting protrusion 34 is located on the side of the second auxiliary rod 32 near the shaft pin 36, and the limiting ring 35 is located on one side of the limiting protrusion 34.

[0107] When in use, in the storage state, adjust the limiting ring 35 to the side of the limiting protrusion 34 away from the shaft pin 36 so that the overlapping part of the first auxiliary rod 31 and the second auxiliary rod 32 can rotate freely, making it easy for the support frame 2 to be folded.

[0108] In the unfolded state, the limiting ring 35 is adjusted to the side near the limiting protrusion 34 of the pivot pin 36, preventing relative rotation between the first auxiliary rod 31 and the second auxiliary rod 32, thereby locking the position of the support frame 2. The end of the first auxiliary rod 31 is welded and fixed to form a whole, and the second auxiliary rod 32 is connected to the first auxiliary rod 31 through the pivot pin 36. The fixed crossbar 33 provides a fulcrum for the rotation of the second auxiliary rod 32. Reliable locking is achieved through the simple cooperation of the limiting ring 35 and the protrusion, without the need for additional tools. The operation is intuitive and durable, significantly improving the stability and safety of the beach table in complex outdoor environments.

[0109] The limiting ring 35 is an open ring made of metal or polymer material with a certain degree of elasticity, and is fitted around the hinge area of ​​the first auxiliary rod 31 and the second auxiliary rod 32. Its inner wall has a groove that matches the limiting protrusion 34 (or it directly relies on the friction generated by the interference fit). When unlocking, the user moves the limiting ring 35 axially to disengage it from the limiting protrusion 34, at which point the first auxiliary rod 31 and the second auxiliary rod 32 can rotate freely relative to each other.

[0110] When locking the support frame, once the support frame 2 is extended to its limit position, the limiting protrusion 34 moves to the predetermined position. The user then reverses the movement of the limiting ring 35, causing it to engage with the limiting protrusion 34. The ring's rigidity holds the protrusion in place, thereby preventing relative rotation between the auxiliary rods and achieving a stable lock on the support frame 2.

[0111] It should be noted that the device structure and accompanying drawings of this invention mainly describe the principle of the invention. Based on this design principle, the specific details of the device's power mechanism, power supply system, and control system are not fully described. Those skilled in the art, understanding the principles of the invention, can clearly understand the specific details of its power mechanism, power supply system, and control system. The control method described in the application is automatic control via a controller, and the controller's control circuit can be easily implemented by those skilled in the art through simple programming.

[0112] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0113] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A portable, foldable beach table, characterized in that, include: Desktop (1), at least one should be set; The support frame (2) is rotatably installed below the desktop (1) to support the desktop (1). The limiting mechanism (3) is rotatably installed between the desktop (1) and the support frame (2) below it. The limiting mechanism (3) is used to keep the support frame (2) in a fixed state after it is unfolded. Hammock assembly (4) is installed below the tabletop (1). The hammock assembly (4) includes a fabric body (41), and the two ends of the fabric body (41) are fixedly tied to the two ends below the tabletop (1). Cooling component (5) is disposed in the inner interlayer of the fabric (41) to cool the side of the fabric (41) in contact with the body; The support rod (6) is rotatably installed below both ends of the tabletop (1), and the support frame (2) is welded and fixed below the support rod (6); The two ends of the fabric (41) of the hammock assembly (4) are fixed to the support rod (6) by a detachable binding method, so that the fabric (41) forms a hammock structure that can be used for people to lie down when the support frame (2) is unfolded. The cooling component (5) includes a pipe (51) which is connected to an external cold water source and cools the fabric (41) by circulating cold water. It also includes a strip-shaped airbag (11), which is embedded in the slots (92) on both sides of the tabletop (1); An air inlet pipe (12) and an air outlet pipe (13) are embedded inside the tabletop (1), and the two ends of the air inlet pipe (12) and the air outlet pipe (13) are respectively inserted into the two sets of strip-shaped airbags (11); A four-way solenoid valve (14) is embedded inside the desktop (1). The air inlet pipe (12) and the air outlet pipe (13) are connected in the middle through the four-way solenoid valve (14). The four-way solenoid valve (14) is provided with an air inlet (141) and an air outlet (142). The strip-shaped airbag (11) has several elastic ropes (111) sewn and fixed inside. When the strip-shaped airbag (11) deflates, it returns to the slot (92) through the elastic ropes (111).

2. A portable foldable beach table according to claim 1, characterized in that, There are two desktops (1), and the two desktops (1) are connected by a hinge (7) so that the desktops (1) can be folded relative to each other; A set of connecting pieces (71) is provided near the connection area of ​​the two desktops (1). The desktops (1) are mounted on the connecting pieces (71) by a shaft pin. A support rod (72) is rotatably connected between the two connecting pieces (71) by a damping shaft (8). Two auxiliary rods (73) are fixedly installed on the support rod (72). A set of limiting mechanisms (3) is provided between the two auxiliary rods (73). The desktop (1) has several perforated holes (74) in the lower central area, which reduces the weight of the desktop (1).

3. A portable foldable beach table according to claim 1, characterized in that, The support rod (6) is rotatably mounted below both ends of the tabletop (1) via a damping pivot (8).

4. A portable foldable beach table according to claim 1, characterized in that, The hammock assembly (4) also includes a fabric piece (42), which is sewn to both ends of the fabric body (41). The fabric piece (42) is rolled up to form a tube. The adjacent sides of the fabric piece (42) are sewn together and fixed by a zipper (43). After the fabric piece (42) is pulled together by the zipper (43), it is fixed around the support rod (6).

5. A portable foldable beach table according to claim 4, characterized in that, The fabric (41) includes an upper fabric (411) and a lower fabric (412), the upper fabric (411) and the lower fabric (412) are sewn together and fixed, and a tortuous channel (413) is provided between the upper fabric (411) and the lower fabric (412).

6. A portable foldable beach table according to claim 5, characterized in that, The cooling component (5) has a pipe (51) installed inside the tortuous channel (413). An insulation layer (52) is attached to the bottom of the pipe (51). The insulation layer (52) is sewn and fixed to the lower layer of cloth (412). The top of the pipe (51) directly abuts against the upper layer of cloth (411). The outlet end (511) and inlet end (512) of the pipeline (51) are inserted and fixed on the short side of the tabletop (1). Water is input through the inlet end (512) by an external water pump (9) and a cold water tank, and the outlet end (511) flows back to the cold water tank.

7. A portable foldable beach table according to claim 6, characterized in that, It also includes a pressure sensor (10), which is embedded in the middle of the upper part of the support rod (6) and located in the coverage area of ​​the fabric piece (42).

8. A portable foldable beach table according to claim 1, characterized in that, The desktop (1) has a slot (15) on its side, and an external threaded post (16) is provided in the slot (15). The air inlet (141) is located in the middle of the external threaded post (16), and an electrical connection port (17) is provided on one side of the air inlet (141). An electrical plug (181) is provided on the side of the tube (18) connected to the external air pump (91). An internal thread sleeve (19) matching the external threaded post (16) is fitted on the outside of the tube (18). The tube (18) is inserted into the air inlet (141), and the electrical plug (181) is inserted into the electrical inlet (17). The internal thread sleeve (19) is locked to the external threaded post (16) through thread engagement. It also includes a control unit (20), which is electrically connected to the four-way solenoid valve (14), air pump (91), water pump (9), and pressure sensor (10) for controlling the operation of the cooling component (5) and the strip airbag (11).

9. A portable foldable beach table according to claim 1 or 8, characterized in that, The limiting mechanism (3) includes a first auxiliary rod (31), a second auxiliary rod (32), a fixed crossbar (33), a limiting protrusion (34), and a limiting ring (35). The first auxiliary rod (31) is rotatably mounted on the inner side of the desktop (1), and the ends of the two first auxiliary rods (31) are welded and fixed; the fixed crossbar (33) is located below the middle of the desktop (1), and the second auxiliary rod (32) is rotatably mounted on the fixed crossbar (33), and the end of the second auxiliary rod (32) is rotatably connected to the ends of the two first auxiliary rods (31) through a shaft pin (36); The limiting protrusion (34) is located on the side of the second auxiliary rod (32) near the shaft pin (36), and the limiting ring (35) is located on one side of the limiting protrusion (34).

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