Backrest cushion with cooling function

Abstract

The utility model belongs to back cushion technical field especially relates to a back cushion with cooling function, include: back cushion, the cushion of flexible connection with back cushion, the front surface of back cushion is equipped with a plurality of back cushion water bags at interval, back cushion water bag is V -shaped, and the top of adjacent back cushion water bag respectively is connected through back cushion communication pipe, one of back cushion water bag is equipped with back cushion water inlet, a plurality of back cushion water bags are all equipped with the branch pipe for drainage, and one end of branch pipe extends to the bottom end of corresponding back cushion water bag, and the other end of a plurality of branch pipes is connected with same main drain pipe, and the water inlet of water circulation device is communicated with the drain of back cushion water inlet, and the water inlet of water circulation device is communicated with main drain pipe. Through above -mentioned structure setting, the utility model provides a back cushion that can effectively take into account cooling, buffering function, solves the problem that the cooling effect of back cushion in the prior art is not good, and the cooling liquid circulation is not smooth.

Description

Technical Field

[0001] This utility model belongs to the field of backrest cushion technology, and in particular relates to a backrest cushion with cooling function. Background Technology

[0002] With the increasing demand for cooling in high summer temperatures or prolonged sitting, backrest cushions with cooling functions have become an important research and development direction. Currently, the mainstream technologies fall into two categories: one uses a water-filled structure with static coolant (such as water or gel), relying on the coolant's own heat absorption to achieve passive cooling; the other uses a simple, interconnected water-filled assembly combined with a water pump or other water circulation device, attempting to achieve active cooling through liquid flow. However, existing technologies have significant shortcomings in practical applications, making it difficult to balance cooling effect, support stability, and durability.

[0003] Existing backrest cushions with cooling functions face three major challenges: First, unbalanced liquid distribution. Static or conventionally connected water bladders are easily affected by gravity, causing coolant to pool at the bottom of the backrest, while the upper water bladders deflate due to insufficient liquid, failing to cover key cooling areas such as the upper back, creating "localized cooling blind spots." Second, rapid degradation of cooling efficiency. Although some products use V-shaped water bladders that conform to the human body's curves, the warm coolant at the bottom of the bladders is difficult to drain, and newly injected low-temperature coolant cannot effectively fill the gap, resulting in a "cold and hot stagnation" phenomenon, and the cooling effect decreases significantly in a short time. Third, a contradiction between support and pipe protection. Backrest pressure can easily squeeze the connecting pipes or drain pipes between water bladders, causing the pipes to collapse and water circulation to be interrupted. At the same time, the lack of targeted support structures means that the water bladders are prone to deformation under long-term pressure, affecting both support comfort and further damaging the cooling system. In addition, most products only optimize the cooling of the backrest, while the seat cushion uses ordinary sponge or an independent static structure, failing to form a synergistic cooling system with the backrest, resulting in a disjointed overall experience.

[0004] To address the aforementioned problems, this utility model proposes a solution to the existing cooling backrest cushions that suffer from uneven liquid distribution, low cooling efficiency, easy pipe damage, insufficient support, and poor synergy between the seat and back cushions. Utility Model Content

[0005] The purpose of this invention is to provide a backrest cushion with a cooling function to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following solution: A backrest cushion with cooling function includes: a backrest cushion and a seat cushion flexibly connected to the backrest cushion. The front of the backrest cushion is provided with a plurality of backrest cushion water bladders at equal intervals. The backrest cushion water bladders are V-shaped, and the tops of adjacent backrest cushion water bladders are connected through a backrest cushion connecting tube. One of the back pad water bladders is provided with a back pad water inlet, and each of the several back pad water bladders is provided with a branch pipe for drainage. One end of the branch pipe extends to the bottom end of the corresponding back pad water bladder, and the other end of the several branch pipes is connected to the same main drain pipe. The back pad water inlet is connected to the drain outlet of the water circulation device, and the main drain pipe is connected to the water inlet of the water circulation device.

[0007] Preferably, several back pad connecting pipes are staggered on both sides of several back pad water bladders.

[0008] Preferably, a buffer support strip is fixedly connected along the length direction on one side of the back pad water bladder near the back pad.

[0009] Preferably, the buffer support bar has a flexible hollow structure to allow water to flow through.

[0010] Preferably, the portion of the branch pipe located inside the back pad water bladder is provided with drain pipe support strips on both sides, and the drain pipe support strips are fixedly connected to the inner side of the back pad water bladder.

[0011] Preferably, the thickness of the drain pipe support strip is not less than the diameter of the branch pipe.

[0012] Preferably, the water circulation device is a water pump, the back pad inlet is connected to the water pump outlet, and the main drain pipe is connected to the water pump inlet.

[0013] Preferably, the front of the cushion has a plurality of cushion water bladders arranged at equal intervals, and adjacent cushion water bladders are connected by a cushion connecting pipe. A cushion water outlet is provided on one side of the cushion water bladder, and a cushion water inlet is provided on the other side of the cushion water bladder.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects: Achieve uniform cooling across the entire back area: The back pad water bladder is designed in a V-shape, which can naturally conform to the core contact area of ​​the human back. Adjacent water bladders are connected by a back pad connecting tube at the top, which can avoid the problem of coolant pooling at the bottom of the back pad due to gravity and water bladders at higher levels drying out. This ensures that water bladders in all areas of the back are filled with coolant and eliminates local cooling blind spots.

[0015] Ensuring cooling efficiency and continuity: The branch pipes inside each back pad water bladder extend to the bottom and then converge into the same main drain pipe. In conjunction with the water circulation device (the back pad water inlet is connected to the drain outlet, and the main drain pipe is connected to the water inlet), the warm coolant stagnating at the bottom of the water bladder can be quickly discharged, and low-temperature coolant can be replenished in time to solve the problem of "cold and hot stagnation" and maintain a stable cooling effect.

[0016] Balancing adaptability and practicality: The backrest and seat cushion are flexibly connected, making them adaptable to various scenarios such as office chairs and car seats; through the connection of the water inlet, connecting pipe, branch pipe, main drain pipe and water circulation device, a complete active cooling cycle is formed, which has a longer cooling capacity and is more applicable to a wider range of scenarios compared to backrests filled with static coolant.

[0017] Through the above structural design, this utility model provides a backrest cushion that can effectively combine cooling and cushioning functions, solving the problems of poor cooling effect and poor coolant circulation in existing backrest cushions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the internal structure of the back pad water bladder in Example 1; Figure 3 This is a schematic diagram of the structure of Example 2; Figure 4 This is a schematic diagram of the structure on the back side of Example 2; Figure 5 A schematic diagram of the material for the hollow structure of the buffer support bar; Figure 6 This is a schematic diagram of the back structure of Example 3.

[0019] Among them, 1. Back cushion; 2. Seat cushion; 3. Back cushion water bladder; 4. Back cushion connecting pipe; 5. Back cushion water inlet; 6. Branch pipe; 7. Main drain pipe; 8. Buffer support bar; 9. Drain pipe support bar; 201. Seat cushion water bladder; 202. Seat cushion connecting pipe; 203. Seat cushion water inlet; 204. Seat cushion water outlet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 Reference Figures 1 to 2 This embodiment discloses a backrest cushion with cooling function, including: a backrest cushion 1, a seat cushion 2 flexibly connected to the backrest cushion 1, and a plurality of backrest cushion water bladders 3 are evenly spaced on the front of the backrest cushion 1. The backrest cushion water bladders 3 are V-shaped, and the tops of adjacent backrest cushion water bladders 3 are connected through a backrest cushion connecting pipe 4. One of the back pad water bladders 3 is provided with a back pad water inlet 5, and several back pad water bladders 3 are provided with branch pipes 6 for drainage. One end of the branch pipe 6 extends to the bottom end of the corresponding back pad water bladder 3, and the other end of several branch pipes 6 is connected to the same main drain pipe 7. The back pad water inlet 5 is connected to the drain outlet of the water circulation device, and the main drain pipe 7 is connected to the water inlet of the water circulation device.

[0023] Among them, the branch pipe 6 and the main drainage pipe 7 are connected by integral molding or nesting and other pipe connection methods to achieve effective sealing. The connection point between the branch pipe 6 and the back pad water bag 3, and the connection point between the back pad connecting pipe 4 and the back pad water bag 3 are also sealed by adhesive sealing and other methods. These technologies are conventional technical means in this field and will not be described in detail here.

[0024] The solution provided in Embodiment 1 of this utility model fully achieves the three-in-one effect of cooling, circulation, and support. Specifically: Firstly, the back cushion water bladder 3 in this embodiment is V-shaped. This structure ensures that when coolant (usually water, but other coolants can also be used) enters the back cushion water bladder 3, the coolant's own gravity causes the liquid to always converge towards the bottom center of the V-shape. This keeps the bottom full of coolant, corresponding to the position where people lean against. This structure ensures that coolant always fills the areas that need cooling most, preventing coolant from flowing to other areas due to the pressure of leaning against the back, leaving those areas lacking coolant.

[0025] Secondly, while the V-shaped back cushion water bladder 3 ensures that the liquid is always full in the area that needs cooling, this structure has a key problem: the coolant will accumulate at the bottom of the V-shaped structure. During liquid exchange, the warm liquid in this part is prone to not being discharged while the cooler liquid cannot enter. To solve this problem, this embodiment is designed with a liquid discharge structure, so that one end of the branch pipe 6 extends to the bottom of the corresponding back cushion water bladder 3. During liquid exchange, the warm coolant concentrated at the bottom of the V-shape is sucked out through one end of the branch pipe 6, thereby achieving a good liquid exchange effect.

[0026] Finally, there is another problem with the multiple V-shaped back pad water bladders 3: during fluid exchange, the lower water bladder 3 tends to be fully filled, while the upper water bladder 3 has less coolant. In fact, this problem exists with all back pads filled with coolant. Because the back pad itself is constantly affected by gravity, if there is a height difference in the coolant bladders, the liquid will flow to the lower area, causing the higher areas to be deflated and lacking liquid, thus affecting the performance.

[0027] To address this issue, the connection point between the multiple V-shaped back cushion water bladders 3 of this invention is located at a high position. Specifically, the tops of adjacent back cushion water bladders 3 are connected via a back cushion connecting pipe 4. This ensures that when the V-shaped back cushion water bladders 3 are at rest, the coolant is retained in the lower part of the V-shaped back cushion water bladders 3. Only when the coolant is continuously filled will it flow through the higher part of the V-shaped back cushion water bladders 3 into the lower V-shaped back cushion water bladders 3. This structural design ensures that the higher V-shaped back cushion water bladders 3 are always full of coolant, guaranteeing both effective cooling and user comfort.

[0028] To further optimize the design, several back pad connecting pipes 4 are staggered on both sides of several back pad water bladders 3.

[0029] like Figure 1 As shown, multiple back pad connecting pipes 4 are staggered on both sides of several back pad water bladders 3. This structure ensures that when the coolant is filled, the coolant can always flow along the length of the back pad water bladder 3 before entering the next back pad water bladder 3, thus ensuring that each back pad water bladder 3 can exchange coolant.

[0030] In addition, the diameter of the multiple back pad connecting tubes 4 is not greater than the height of the back pad water bag 3, so as to prevent the back pad connecting tubes 4 from being compressed when the back is against the back pad water bag 3.

[0031] To further optimize the design, a buffer support strip 8 is fixedly connected along the length of the side of the back pad water bladder 3 near the back pad 1.

[0032] The design was further optimized by incorporating a flexible, hollowed-out structure for the buffer support bar 8 to allow water to flow through.

[0033] The structure of the buffer support bar 8 is as follows Figure 5 As shown, Figure 5 The structure shown is sheet-like, with 8 buffer support bars. Figure 5 A strip is cut out from the middle as its specific structure. The buffer support strip 8 is made of waterproof, pressure-resistant and resilient material available on the market, such as silicone, which can provide support and allow water to flow smoothly.

[0034] The design is further optimized by providing drain pipe support strips 9 on both sides of the portion of the branch pipe 6 located inside the back pad water bladder 3. The drain pipe support strips 9 are fixedly connected to the inside of the back pad water bladder 3.

[0035] The drain pipe support strips 9 on both sides can have the same structure as the buffer support strips 8, both being cut from [the original design]. Figure 5 The perforated mesh structure shown is used to allow water to pass through normally and to provide support. The drain pipe support strip 9 can provide some support for the branch pipe 6 and prevent it from being crushed under pressure when it is backed up.

[0036] Further optimization of the design involves ensuring that the thickness of the drainage pipe support strip 9 is not less than the diameter of the branch pipe 6. This structural design also aims to provide effective support for both sides of the branch pipe 6, preventing it from being crushed under pressure.

[0037] The scheme was further optimized so that the water circulation device is a water pump, the back pad inlet 5 is connected to the water pump outlet, and the main drain pipe 7 is connected to the water pump inlet.

[0038] This device uses a water pump as a water circulation device, and can also be equipped with a cooling water tank as a cooling structure. Regarding the selection of the water pump, the device should be able to realize water circulation, and is not limited to a certain type of water pump. The core utility model of this device lies in the structure of the backrest part, and the water circulation part can refer to the content of existing technology.

[0039] To further optimize the design, the front of the seat cushion 2 is provided with several equally spaced seat cushion water bladders 201. Adjacent seat cushion water bladders 201 are connected by seat cushion connecting pipes 202. A seat cushion water outlet 204 is provided on the seat cushion water bladder 201 on one side, and a seat cushion water inlet 203 is provided on the seat cushion water bladder 201 on the other side.

[0040] The water sac 201 in seat cushion 2 also has a strip-shaped support and cushioning layer (cut from...). Figure 5 The water bladder 201 is used to cushion and support the user's weight, providing a more comfortable environment. The water outlet 204 and water inlet 203 on the seat cushion 201 can be connected to a separate water pump, or they can share a water pump with the back cushion 1. In this case, it is only necessary to connect the outlet of one of them to the inlet of the other, and then connect the inlet and outlet of the water pump to the remaining inlet and outlet respectively. Since this part of the technology can be adjusted according to actual needs and is not difficult for those skilled in the art, it will not be described in detail.

[0041] In this embodiment, the back cushion connecting pipe 4, branch pipe 6, main drain pipe 7, and seat cushion connecting pipe 202 are all selected from commercially available flexible hoses, and no limitation is made here. The back cushion 1 and the seat cushion 2 can be directly connected as a single structure, or they can be connected using flexible materials such as silicone, PVE, or fabric.

[0042] When the backrest 1 is connected to a seat, car seat, etc., it is connected by one or more straps on both sides of its upper part to prevent it from falling over due to gravity, or by a structure such as a connecting strap with buckles to effectively fix the two straps together. This part of the design is a conventional technical means in this field.

[0043] When the seat cushion 2 is connected to other structures, it can also be fixed with straps. Since the seat cushion 2 is also fixed stably after the back cushion 1 is fixed, it is not necessary to use straps for fixing.

[0044] As for fixing the water circulation device, it can be fixed to the back of the seat or the inside of the vehicle seat, either by straps, screws or other fixing methods. It can also be placed on one side. The fixing position will not affect the normal use of the device, nor is it a utility model point of this utility model, so it will not be described in detail.

[0045] In addition, because the water circulation device is in a closed loop when water replacement is not required, the main drain pipe 7 is sealed and cannot discharge liquid, thus keeping the liquid in the device stable and preventing it from being discharged.

[0046] Example 2 The only difference between this embodiment and embodiment 1 is that the main drain pipe 7 is set on the back of the entire back pad 1 and close to the bottom of the back pad water bladder 3. This allows a shorter branch pipe 6 to directly connect to the bottom of the back pad water bladder 3, thus eliminating the need to set a large number of branch pipes 6 inside the back pad water bladder 3, reducing process requirements and manufacturing costs.

[0047] In this embodiment, the shorter branch pipe 6 is generally buried on the side of the main drain pipe 7 near the back pad water bladder 3, passing through the back pad 1 and connecting with the back pad water bladder 3. Because it is short, it cannot be seen in the figure. The branch pipe 6 only serves to connect the main drain pipe 7 and the back pad water bladder 3.

[0048] Example 3 like Figure 6 As shown, the difference between this embodiment and embodiment 2 is only that: two support plates are provided on the side of the back pad 1 away from the back pad water bladder 3. The thickness of the support plates is not less than the diameter of the main drain pipe 7. The main drain pipe 7 is located between the two support plates. The significance of this structure is that it can provide support for the main drain pipe 7, so that when the back is against the back pad 1, the main drain pipe 7 can also effectively drain water.

[0049] The support layer can be an integral structure with the back pad 1, or it can be attached by Velcro or other means. Its main function is to provide support for the main drain pipe 7. Therefore, the material can be any material that can provide support, such as rubber, silicone, 3D mesh material, etc.

[0050] Example 4 The only difference between this embodiment and embodiment 3 is that the main drain pipe 7 is configured with multiple drain connectors (two-way drain connectors at the top and three-way drain connectors in the middle) and electric control valves in an alternating arrangement, i.e., a structure of "drain connector-electric control valve-drain connector" that is constantly repeated. Finally, a silicone water pipe is connected to drain the water. Multiple electric control valves are connected to a main controller (a commercially available controller is acceptable) via wires for individual control. One inlet of each drain connector is sealed and connected to the branch pipe 6.

[0051] This design allows the user to control the opening and closing of the electrically controlled valves, thus controlling the drainage of each back pad water bladder 3. However, when not draining, multiple electrically controlled valves are in the closed state, and the liquid inside the back pad water bladder 3 is sealed and will not flow out.

[0052] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0053] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A backrest cushion with cooling function, characterized in that, include: Back pad (1), seat cushion (2) flexibly connected to the back pad (1), the back pad (1) has several back pad water bladders (3) evenly spaced on the front, the back pad water bladders (3) are V-shaped, and the tops of adjacent back pad water bladders (3) are connected through back pad connecting tubes (4). One of the back pad water bladders (3) is provided with a back pad water inlet (5), and several back pad water bladders (3) are provided with branch pipes (6) for drainage. One end of the branch pipe (6) extends to the bottom end of the corresponding back pad water bladder (3), and the other end of several branch pipes (6) is connected to the same main drain pipe (7). The back pad water inlet (5) is connected to the drain outlet of the water circulation device, and the main drain pipe (7) is connected to the water inlet of the water circulation device.

2. The backrest cushion with cooling function according to claim 1, characterized in that: Several back pad connecting pipes (4) are staggered on both sides of several back pad water bladders (3).

3. A backrest cushion with cooling function according to claim 1, characterized in that: A buffer support strip (8) is fixedly connected along the length direction on one side of the back pad (1) near the back pad (3) water bladder.

4. A backrest cushion with cooling function according to claim 3, characterized in that: The buffer support bar (8) is a flexible hollow structure used to allow water to flow through.

5. A backrest cushion with cooling function according to claim 1, characterized in that: The branch pipe (6) is located inside the back pad water bladder (3) and has drain pipe support strips (9) on both sides. The drain pipe support strips (9) are fixedly connected to the inside of the back pad water bladder (3).

6. A backrest cushion with cooling function according to claim 5, characterized in that: The thickness of the drain pipe support strip (9) is not less than the diameter of the branch pipe (6).

7. The backrest cushion with cooling function according to claim 1, characterized in that: The water circulation device is a water pump. The back pad water inlet (5) is connected to the water pump drain outlet, and the main drain pipe (7) is connected to the water pump inlet.

8. A backrest cushion with cooling function according to claim 1, characterized in that: The seat cushion (2) has several equally spaced seat cushion water bladders (201) on its front side. The adjacent seat cushion water bladders (201) are connected by a seat cushion connecting pipe (202). A seat cushion water outlet (204) is opened on one side of the seat cushion water bladder (201), and a seat cushion water inlet (203) is opened on the other side of the seat cushion water bladder (201).

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