Air bag type height-adjustable pillow

Abstract

The utility model provides an air bag type height adjustable pillow, including pillow air bag and pillow height detection mechanism, the pillow height detection mechanism includes rotor, stay cord and stay cord take-up and pay-off length detection device, the rotor is rotatingly installed on the fixed mount, the first end of stay cord is rolled up on the rotor, and the second end of stay cord is rolled up on the fixed mount. The second end of the pull rope is located above the pillow air bag and can move up and down along with the height change of the pillow air bag, and the pull rope winding and unwinding length detection device is used for detecting the winding and unwinding length of the pull rope. According to the air bag type height-adjustable pillow, the height of the pillow air bag and the height of the pillow can be accurately detected, when the height of the pillow is adjusted, the height of the pillow can serve as an adjusting signal, the height of the pillow is adjusted, the adjustment is direct and linear, the adjustment accuracy is high, and the height of the pillow can be accurately controlled; and the requirements and suggestions of doctors on high-quality pillows are met.

Description

Technical Field

[0001] The utility model relates to the technical field of pillows, in particular to an airbag-type height-adjustable pillow. Background Art

[0002] Due to the fast-paced work and stressful lifestyles, more and more people are facing problems such as poor sleep quality, lumbar pain, and cervical spondylosis, impacting their physical and mental health and work efficiency. To alleviate these issues, pillows have become a popular solution for many people. For example, pillow quality plays a crucial role in ensuring a good night's sleep, and high-quality pillows can effectively alleviate poor sleep quality. People sleep in different postures, such as supine or side sleeping. The height of the head and neck varies depending on the posture. Prolonged improper sleeping posture can cause discomfort in the head and neck, affecting sleep quality and even leading to neck problems. According to professional doctors, high-quality pillows should adjust their height in real time based on the person's sleeping posture, with a height error of less than 1 cm. This eliminates tension in the head and neck, thereby protecting their health. Therefore, it is crucial that the pillow height is not only adjustable but also accurately controlled.

[0003] Currently, there are a variety of height-adjustable pillows on the market, with the most common method using an airbag to inflate and deflate. Besides structurally adjustable pillow height, pillow height adjustment also involves controlling the pillow's height. The soft, highly deformable nature of pillows, coupled with the high comfort requirements, makes it difficult to incorporate a height sensor into the pillow. Existing airbag pillows do not directly control pillow height using a height signal, but instead use the airbag pressure as a control signal to indirectly adjust pillow height. However, the relationship between airbag pressure and pillow height is not linear: doubling the airbag pressure does not result in a doubling of the pillow's height. Furthermore, for a constant airbag pressure, airbag height is also dependent on head weight and temperature. For example, when the head rests on the pillow, the airbag is compressed, increasing the internal pressure while decreasing the pillow's height. While existing airbag pillows can adjust pillow height, their adjustment accuracy is limited, making precise height control difficult and failing to meet doctors' requirements and recommendations for high-quality pillows. Utility Model Content

[0004] The purpose of the utility model is to provide an airbag-type height-adjustable pillow.

[0005] The technical solution to achieve the purpose of the utility model is: an airbag-type height-adjustable pillow, including a pillow airbag and a pillow height detection mechanism, the pillow height detection mechanism including a rotor, a pull rope and a pull rope retraction length detection device, the rotor can be rotatably mounted on a fixed frame, the rotor is connected to an elastic element, and can automatically rotate under the action of the preload force provided by the elastic element, the first end of the pull rope is wound on the rotor, the second end of the pull rope is located above the pillow airbag and can move up and down with the height change of the pillow airbag, the pull rope retraction length detection device is used to detect the retraction length of the pull rope on the rotor.

[0006] Furthermore, the elastic element is a spring, one end of which is connected to the fixing frame and the other end is connected to the rotor. During operation, the elastic element provides a preload force for the rotation of the rotor and the winding of the pull cord. This preload force keeps the pull cord taut at all times. The second end of the pull cord is located above the pillow airbag and can always move up and down with the height change of the pillow airbag. The elastic element can be a spring or a damper. Compared to a damper, a spring as the elastic element is less expensive, easier to obtain, and has better deformation capability.

[0007] Furthermore, the elastic element is a planar volute spring. The elastic element can be a tension spring wound along the rotor, or a swing arm installed on the rotor, with one end of the tension spring connected to the swing arm; the elastic element can be a torsion spring, which is mounted on the rotor, with one end of the torsion spring abutting against the fixed frame; the elastic element can also be a planar volute spring, which is directly mounted on the rotor, with one end of the planar volute spring connected to the fixed frame and the other end connected to the rotor. Compared to tension springs and torsion springs, planar volute springs have a simpler installation structure, and the rotational displacement range of the rotor and the retraction and extension displacement range of the pull cord are larger. They move up and down with the height change of the pillow airbag, making them more suitable for detecting pillow height.

[0008] Furthermore, the rotor is a disc-shaped structure, rotatably mounted on a fixed shaft on the fixed frame. One end of the elastic element is connected to the fixed shaft, and the other end is connected to the rotor. A chamber is provided within the rotor, and the elastic element is installed within the chamber. The disc-shaped rotor facilitates winding of the draw cord and facilitates the provision of a chamber within the rotor for installing the elastic element. This improves the integrity of the rotor and elastic element, and the concealment of the elastic element during installation. Other pillow fabrics are less likely to become trapped within the elastic element, thereby affecting its use.

[0009] Furthermore, a groove is formed on the peripheral wall of the rotor along its circumference, and the first end of the pull rope is wound into the groove. The groove limits the winding of the pull rope, making the retraction and release of the pull rope more reliable.

[0010] Furthermore, a stack is provided above the pillow airbag, and the second end of the pull cord is connected to the stack. The second end of the pull cord can be connected to the top of the pillow airbag, or to the top of a pillow core or pillowcase. Alternatively, a stack can be stacked above the pillow airbag, with the second end of the pull cord connected to the stack. When the second end of the pull cord is connected to the top of the pillow airbag, the top of the pillow core or pillowcase, the structure of the pillow airbag or pillowcase cannot be destroyed, resulting in relatively large difficulty in connecting the pull cord. The connection is often limited and can only be achieved through gluing, resulting in poor connection firmness and stability. After stacking the stack above the pillow airbag, a hole can be opened in the stack, and the pull cord can be passed through the stack and tied to the stack. Alternatively, the pull cord and the stack can be sewn together with needle and thread. The connection arrangement of the pull cord is simpler, and the connection is also more firm and reliable.

[0011] Furthermore, the drawstring passes vertically through the pillow airbag. The drawstring can be pulled at an angle or vertically. Compared to the angled pull, the vertical pull allows the retracted and extended length of the drawstring to vary proportionally with the pillow height. The pillow height can be directly calculated from the retracted and extended length of the drawstring, simplifying conversion calculations. Furthermore, after passing through the pillow airbag, the drawstring's path conveniently passes through the bottom of the pillow. This path is less susceptible to disruption and provides greater stability.

[0012] Furthermore, a guide wheel is provided on the pulling path of the pull rope, and the pull rope is wound around the guide wheel. The provision of the guide wheel can facilitate the guidance and reversal of the pulling path of the pull rope, thereby making the pulling path of the pull rope more flexible and facilitating the arrangement of various structures, especially the rotor and the pull rope retraction length detection device.

[0013] Furthermore, the cord retracted / released length detection device is any one of a rotary transformer, a photoelectric encoder, a resistive angular displacement sensor, a capacitive angular displacement sensor, and a magnetoelectric angular displacement sensor, and is configured to sense the angular displacement of the rotor. The cord retracted / released length detection device can directly sense the rotational displacement and rotation angle of the rotor, and then calculate the cord retracted / released length based on the radial dimensions of the rotor to determine the pillow height.

[0014] Furthermore, the drawstring retraction and extension length detection device includes a gear, a rack, and a linear displacement sensor. The gear is coaxially mounted on the rotor, and the rack is slidably mounted on the fixed frame. The gear and rack mesh, and the linear displacement sensor is used to sense and detect the linear displacement of the rack. During operation, as the drawstring is retracted or extended, the rotor rotates, which in turn drives the gear and rack, causing the rack to move linearly. The linear displacement of the rack is then sensed by the linear displacement sensor to calculate the drawstring extension and retraction amount, thereby obtaining the pillow height.

[0015] Furthermore, the linear displacement sensor is any one of a potentiometer displacement sensor, a linear displacement sensor, a Hall displacement sensor, a capacitive displacement sensor, an inductive displacement sensor, a grating displacement sensor, and a laser displacement sensor.

[0016] Furthermore, the pillow airbag is provided with an inflation assembly, which includes an inlet pipe and an outlet pipe, each of which is connected to the pillow airbag. The inlet pipe is equipped with an air pump and a one-way valve, and the outlet pipe is equipped with a deflation valve. The air pump is mounted on the fixed frame. When inflating the pillow airbag, the air pump operates, pumping gas into the pillow airbag along the inlet pipe. When deflated, the deflation valve opens, and the gas in the pillow airbag is discharged outward along the outlet pipe.

[0017] Furthermore, the drawstring retraction length detection device, the air pump, and the air release valve are all electrically connected to a control unit, respectively. When the drawstring retraction length detection device includes a gear, a rack, and a linear displacement sensor, the linear displacement sensor, the air pump, and the air release valve are all electrically connected to a control unit, respectively. The drawstring retraction length detection device senses and detects the rotational displacement of the rotor in real time. Based on the detected rotational displacement of the rotor, the control unit calculates the pillow height and controls the air pump and the air release valve. If the pillow height needs to be adjusted upward, the control unit controls the air pump to operate; if the pillow height needs to be adjusted downward, the control unit controls the air release valve to open.

[0018] Furthermore, a first pressure sensor is installed on the air inlet pipe or the air outlet pipe;

[0019] When a first pressure sensor is installed on the air intake pipe, the first pressure sensor is located between the one-way valve and the pillow airbag;

[0020] When a first pressure sensor is installed on the air outlet pipe, the first pressure sensor is located between the air release valve and the pillow airbag;

[0021] The first pressure sensor is electrically connected to the control unit. In the utility model of the airbag-type height-adjustable pillow, the first pressure sensor is used to sense the air pressure in the pillow airbag in real time, and send the sensed air pressure signal in the pillow airbag to the control unit; the control unit controls the air pump and the air release valve according to the air pressure signal in the pillow airbag. If the first pressure sensor senses that the air pressure in the pillow airbag is too high and the pillow airbag has an explosion risk, the control unit controls the air pump to stop, and if necessary, controls the air release valve to open. The setting of the first pressure sensor can monitor the air pressure in the pillow airbag, which can effectively prevent the air pressure in the pillow airbag from being too high, which may bring safety risks.

[0022] Furthermore, the air inlet and outlet pipes are provided with the air chambers. When the pillow airbag is inflated or deflated, the air passes through the air chambers. Due to the expansion of the air chambers, the pressure of the air entering the air chambers decreases instantaneously, which can significantly reduce the noise of air inflow and outflow.

[0023] Furthermore, the air chamber is provided with a sound-absorbing cotton which can effectively reduce the gas noise.

[0024] Furthermore, the air pump is covered with a silicone vibration-damping sleeve. The silicone vibration-damping sleeve acts as a shock absorber, effectively absorbing vibrations during operation of the air pump and thereby reducing noise. Furthermore, a sound-reducing material may also be provided within the silicone vibration-damping sleeve.

[0025] Furthermore, the silicone vibration-damping sleeve is connected to the fixing frame via a shock-damping spring. If the four corners of the silicone vibration-damping sleeve are connected to the fixing frame via the shock-damping spring, the provision of the shock-damping spring can greatly absorb the vibration of the air pump during operation and reduce noise.

[0026] Furthermore, the pillow airbag includes a neck airbag and a head airbag, each of which is completely separate and independently configured, and each corresponds to an inflatable assembly. The neck airbag and the head airbag are arranged horizontally from front to back, with the neck airbag corresponding to the position of the human neck and the head airbag corresponding to the position of the human head. Compared to a single, large pillow airbag that supports both the neck and the head, the pillow airbag of the present invention, which includes both a neck airbag and a head airbag, is smaller in size. The gas flow within these smaller airbags is relatively low, resulting in a stronger structure and greater stability during use. Furthermore, the heights of the human neck and head vary, and this arrangement facilitates adjusting the heights of the neck and head airbags to accommodate different neck and head heights, thereby improving pillow comfort.

[0027] Furthermore, the neck airbag and the head airbag each correspond to a pillow height detection mechanism. While the neck airbag and the head airbag are independently inflated and deflated by two sets of inflatable components, each also corresponds to a pillow height detection mechanism. This setup facilitates separate adjustment of the neck airbag and the head airbag based on the height of the human neck and head, achieving greater adjustment precision.

[0028] Furthermore, the head airbag comprises two sub-airbags arranged horizontally from front to back. Compared to a single head airbag, the two sub-airbags are smaller and more stable during use. Furthermore, they also facilitate the formation of a channel for the drawstring to pass through the pillow airbag. The two sub-airbags can be connected one by one at the left and right ends.

[0029] Furthermore, the fixing frame includes a base plate and a cylindrical outer shell. The base plate is located below the pillow airbag, and the cylindrical outer shell is located behind the pillow airbag. The base plate facilitates the arrangement of the guide wheel and the pulling path of the pull rope. The inflatable component is installed in the cylindrical outer shell. The cylindrical outer shell is used to install the inflatable component and also conveniently protects the cylindrical outer shell to prevent the inflatable component from being crushed.

[0030] Furthermore, the pillow also includes a row of second pressure sensors, one row of which is arranged along the width of the pillow, and one row of which is located in front of the pillow airbag, corresponding to the human shoulder position. The second pressure sensors are used to sense the human body's lying position in real time. Specifically, if the second pressure sensor senses a wide pressure width, it determines that the person is lying on their back; if the second pressure sensor senses a narrow pressure width, it determines that the person is lying on their side. Based on the different lying positions sensed by the second pressure sensor, the control unit can adjust the pillow height accordingly, so that the pillow height can better match the changing lying position and ensure the comfort of the pillow at all times.

[0031] Furthermore, the airbag-type height-adjustable pillow includes a pillow core, wherein the pillow airbag and the pillow height detection mechanism are both installed in the pillow core. The pillow core is provided for packaging and can also improve the comfort of the pillow.

[0032] Furthermore, the pillow core extends forward with a pillow tongue, which corresponds to the position of the human cervical vertebrae and gradually decreases in height from back to front. The arrangement of the pillow tongue facilitates the support of the human cervical vertebrae, prevents the human cervical vertebrae from being suspended in the air, and improves the comfort of the pillow.

[0033] The utility model provides an airbag-type height-adjustable pillow. The pillow height detection mechanism includes the rotor, the drawstring, and the drawstring retraction and extension length detection device. When the elastic element provides a preload force and the rotor automatically rotates, the drawstring, whose second end is located above the pillow airbag, remains taut and straightened, thereby enabling the conversion of changes in the pillow airbag height into changes in the drawstring's extension and retraction length, as well as changes in the rotor's rotational displacement. Thus, after the drawstring's second end moves up and down with changes in the pillow airbag's height, the drawstring can be retracted and extended accordingly. The rotor can then rotate accordingly under the pull of the drawstring and the preload applied to it. Simultaneously, the drawstring extension and retraction length detection device detects the drawstring's extension and retraction length in real time, calculates the displacement of the drawstring's second end as the pillow airbag's height changes, and thereby detects changes in the pillow airbag's height and the pillow's height.

[0034] The utility model of the airbag-type height-adjustable pillow, when detecting the height of the pillow airbag and its pillow, utilizes the automatically rotating rotor and the pull cord wound on the rotor, so that the pull cord is retracted and extended due to the change in the height of the pillow airbag. The rotor rotates due to the retraction and extension of the pull cord, and the change in the height of the pillow airbag, the change in the retracted and extended length of the pull cord, and the change in the rotational displacement of the rotor can be associated. Then, by detecting the change in the retracted and extended length of the pull cord or the change in the rotational displacement of the rotor, the associated change in the height of the pillow airbag and the detection of the pillow height are achieved. This pillow height detection structure utilizing the rotor and the pull cord not only detects the pillow height, but also the change in the height of the pillow airbag, the change in the retracted and extended length of the pull cord, and the change in the rotational displacement of the rotor correspond one to one and form a linear proportional relationship. Ultimately, the accuracy of the height detection of the pillow airbag and its pillow is also higher.

[0035] The utility model of the airbag-type height-adjustable pillow can not only accurately detect the height of the pillow airbag and its pillow, but also, after detecting the height of the pillow airbag and its pillow, it is convenient to use the pillow height as an adjustment signal to adjust the pillow height. Specifically, the height of the pillow airbag and its pillow is detected in real time. When the height of the pillow does not reach the set height of the pillow, the pillow airbag is controlled to inflate and deflate until the real-time detected pillow height reaches the set height of the pillow. Then, the inflation and deflation operation of the pillow airbag is stopped to complete the adjustment of the pillow height. When the pillow height is adjusted using the pillow height as an adjustment signal, the adjustment signal is the factor to be adjusted itself. This adjustment is direct. Compared with the indirect adjustment using the air pressure that is not in a linear relationship as the adjustment signal, the adjustment accuracy is high, and the pillow height can be accurately controlled to meet the doctor's requirements and suggestions for high-quality pillows.

[0036] The drawstring of the present invention's height-adjustable airbag pillow features excellent flexibility and strong deformability, perfectly matching the pillow's high deformability. When the drawstring is used to detect the height of the pillow's airbag and pillow, it can be integrated with the pillow, facilitating its connection and installation. More importantly, its installation does not affect the pillow's usability or comfort. In other words, the pillow's height-adjustable airbag pillow's height-detection mechanism is simple and inexpensive, allowing accurate detection of the pillow's airbag and pillow's height without affecting its usability or comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of the utility model airbag-type height-adjustable pillow;

[0038] Figure 2This is a schematic structural diagram of the utility model's airbag-type height-adjustable pillow excluding part of the pillow core;

[0039] Figure 3 This is a schematic structural diagram of a fixing frame for an airbag-type height-adjustable pillow according to the present invention;

[0040] Figure 4 yes Figure 3 Schematic diagram of the structure after removing part of the fixing frame;

[0041] Figure 5 It is a structural schematic diagram of the pillow airbag and pillow height detection mechanism of the utility model airbag type height adjustable pillow;

[0042] Figure 6 It is a structural schematic diagram of the pillow height detection mechanism of the utility model airbag type height-adjustable pillow;

[0043] Figure 7 This is a schematic cross-sectional view of the rotor of the utility model airbag-type height-adjustable pillow;

[0044] Figure 8 It is a structural schematic diagram of the pillow airbag and the inflation assembly of the airbag-type height-adjustable pillow of the utility model;

[0045] Figure 9 This is a partial structural diagram of the inflatable component of the utility model airbag-type height-adjustable pillow;

[0046] Figure 10 This is a simplified diagram of the pillow airbag and inflation assembly of the utility model airbag-type height-adjustable pillow;

[0047] Figure 11 This is a control module diagram of the utility model airbag type height-adjustable pillow. DETAILED DESCRIPTION

[0048] The preferred embodiment of the utility model of the airbag height-adjustable pillow is described in detail below with reference to the accompanying drawings:

[0049] like Figures 1 to 7As shown, an airbag-type height-adjustable pillow includes a pillow airbag 11 and a pillow height detection mechanism 20, wherein the pillow height detection mechanism 20 includes a rotor 21, a pull rope 22 and a pull rope retraction length detection device 23, wherein the rotor 21 is rotatably mounted on the fixing frame 10, the rotor 21 is connected to an elastic element 210, and can automatically rotate under the action of the preload force provided by the elastic element 210, the first end 221 of the pull rope 22 is wound on the rotor 21, the second end 222 of the pull rope 22 is located above the pillow airbag 11, and can move up and down with the height change of the pillow airbag 11, and the pull rope retraction length detection device 23 is used to detect the retraction length of the pull rope 22 on the rotor 21.

[0050] The utility model provides an airbag-type height-adjustable pillow. The pillow airbag 11 is a part of the pillow for supporting a human body. The pillow airbag 11 is inflated and deflated to adjust the pillow height. A pillow height detection mechanism 20 is provided corresponding to the pillow airbag 11. The pillow height detection mechanism 20 is used to detect the pillow height. In the pillow height detection mechanism 20, the rotor 21 is rotatably mounted on the fixed frame 10. Under the preload force provided by the elastic element 210, the rotor 21 automatically rotates to wind up the drawstring 22. The preload force provided by the elastic element 210 is limited to the rotor 21 automatically rotating to wind up the drawstring 22, and the drawstring 22 is always taut and straight. The first end 221 of the drawstring 22 is wound on the rotor 21, and the second end 222 of the drawstring 22 is located above the pillow airbag 11 and can move up and down with changes in the height of the pillow airbag 11. The drawstring 22, whose second end 222 moves up and down with changes in the height of the pillow airbag 11, is used to convert changes in the height of the pillow airbag 11 into changes in the wound length of the drawstring 22 and changes in the rotational displacement of the rotor 21. The drawstring retracted length detection device 23 is used to detect the retracted length of the drawstring 22 on the rotor 21.

[0051] In the utility model of the airbag-type height-adjustable pillow, the pillow height detection mechanism 20 detects the pillow height in real time. Specifically, the rotor 21 automatically rotates under the preload force provided by the elastic element 210, winding the drawstring 22, keeping the drawstring 22 taut and straightened. As the height of the pillow airbag 11 changes, the second end 222 of the drawstring 22, which is always taut and straightened, is located above the pillow airbag 11 and moves up and down with the height change of the pillow airbag 11. When the second end 222 of the drawstring 22 moves upward, the drawstring 22 pulls the rotor 21 to rotate, stretching and releasing the drawstring 22. When the second end 222 of the drawstring 22 moves downward, the rotor 21 automatically rotates under the preload force, pulling the drawstring 22 to retract. As the height of the pillow airbag 11 changes, the rotor 21 rotates. During the retraction and extension of the pull cord 22, the height change of the pillow airbag 11 is sequentially converted into a change in the retraction length of the pull cord 22 and a change in the rotational displacement of the rotor 21. Then, the pull cord retraction and extension length detection device 23 detects the retraction and extension length of the pull cord 22 in real time. According to the retraction and extension length of the pull cord 22, the displacement of the second end 222 of the pull cord 22 moving up and down as the height of the pillow airbag 11 changes can be known, thereby detecting the height change of the pillow airbag 11 and the height of the pillow.

[0052] The utility model provides an airbag-type height-adjustable pillow. Through the setting of the pillow height detection mechanism 20, the pillow height detection mechanism 20 includes the rotor 21, the pull rope 22 and the pull rope retraction and extension length detection device 23. When the elastic element 210 provides a pre-tightening force and the rotor 21 can rotate automatically, the pull rope 22 whose second end 222 is located above the pillow airbag 11 can always be tightened and straightened, providing conditions for converting the change in the height of the pillow airbag 11 into a change in the retraction and extension length of the pull rope 22 and a change in the rotational displacement of the rotor 21. In this way, after the second end 222 of the pull rope 22 moves up and down with the change in the height of the pillow airbag 11, the pull rope 22 can be retracted and extended accordingly, and the rotor 21 can rotate accordingly under the tension of the pull rope 22 and the pre-tightening force it is subjected to. At the same time, the pull rope retraction and extension length detection device 23 is used to detect the retraction and extension length of the pull rope 22 in real time, and calculate the displacement of the second end 222 of the pull rope 22 that moves up and down with the change in the height of the pillow airbag 11, thereby detecting the height change of the pillow airbag 11 and the height of the pillow.

[0053] The present invention utilizes an automatically rotating rotor 21 and a pull cord 22 wound around the rotor 21 to detect the height of the pillow airbag 11 and its pillow. The pull cord 22 is retracted and extended in response to changes in the height of the pillow airbag 11. The rotor 21 rotates as the pull cord 22 is retracted and extended. Correlating the change in the height of the pillow airbag 11, the change in the retracted or extended length of the pull cord 22, and the change in the rotational displacement of the rotor 21 are then detected. The associated changes in the height of the pillow airbag 11 and the pillow height are then detected by detecting the change in the retracted or extended length of the pull cord 22 or the change in the rotational displacement of the rotor 21. This pillow height detection structure utilizing the rotor 21 and the pull cord 22 not only detects pillow height, but also provides a linearly proportional relationship between the change in the height of the pillow airbag 11, the change in the retracted or extended length of the pull cord 22, and the change in the rotational displacement of the rotor 21. This ultimately increases the accuracy of detecting the height of the pillow airbag 11 and its pillow.

[0054] The present invention's airbag-type height-adjustable pillow not only accurately detects the height of the pillow airbag 11 and its pillow, but also, after detecting the pillow airbag 11 and its pillow height, conveniently uses the pillow height as an adjustment signal to adjust the pillow height. Specifically, the pillow airbag 11 and its pillow height are detected in real time. If the pillow height does not reach the set height, the pillow airbag 11 is controlled to inflate or deflate. If the pillow height does not reach the set height, air is inflated into the pillow airbag 11; if the pillow height exceeds the set height, the pillow airbag 11 deflates. This process continues until the real-time detected pillow height reaches the set height, at which point the inflation and deflation operations of the pillow airbag 11 cease, completing the pillow height adjustment. When adjusting the pillow height using the pillow height as an adjustment signal, the adjustment signal is the factor to be adjusted itself, making the adjustment direct. Compared to indirect adjustment using a non-linear relationship between air pressure and the adjustment signal, the adjustment accuracy is higher, enabling precise control of pillow height and meeting doctors' requirements and recommendations for high-quality pillows.

[0055] In the utility model airbag-type height-adjustable pillow, the drawstring 22 is flexible and highly deformable, matching the pillow's high deformability. When the drawstring 22 is used to detect the height of the pillow airbag 11 and the pillow itself, the drawstring 22 can be integrated with the pillow, making it convenient to connect and install the drawstring 22. More importantly, the installation of the drawstring 22 does not affect the use and comfort of the pillow. In other words, the pillow height detection mechanism 20 of the utility model airbag-type height-adjustable pillow has a simple and low-cost structure, and can accurately detect the height of the pillow airbag 11 and the pillow itself without affecting the use and comfort of the pillow.

[0056] In the utility model of the airbag-type height-adjustable pillow, preferably, the elastic element 210 is a spring, one end 2101 of the elastic element 210 is connected to the fixing frame 10, and the other end 2102 is connected to the rotor 21. During operation, the elastic element 210 provides a pre-tightening force for the rotation of the rotor 21 and the winding of the pull cord 22. The pre-tightening force keeps the pull cord 22 taut at all times. The second end 222 of the pull cord 22 is located above the pillow airbag 11 and can always move up and down with the height change of the pillow airbag 11. The elastic element 210 can be a spring or a damper. Compared with a damper, when the elastic element 210 is a spring, the cost is low, the material is convenient to obtain, and the deformation ability is better.

[0057] In the utility model of the airbag-type height-adjustable pillow, preferably, the elastic element 210 is a flat scroll spring. The elastic element 210 can be a tension spring, which is wound along the rotor 21, or a swing arm is installed on the rotor 21, with one end of the tension spring connected to the swing arm; the elastic element 210 can be a torsion spring, which is mounted on the rotor 21, with one end of the torsion spring abutting against the fixing frame 10; the elastic element 210 can also be a flat scroll spring, which is directly mounted on the rotor 21, with one end of the flat scroll spring connected to the fixing frame 10 and the other end connected to the rotor 21. Compared with tension springs and torsion springs, the installation structure of the flat scroll spring is simpler, and the rotational displacement range of the rotor 21 and the retraction and extension displacement range of the pull cord 22 are also larger. It moves up and down with the height change of the pillow airbag 11, and is more suitable for detecting the height of the pillow.

[0058] In the utility model, the rotor 21 of the airbag-type height-adjustable pillow is preferably a disc structure. The rotor 21 is rotatably mounted on a fixed shaft 100 on the fixed frame 10. One end 2101 of the elastic element 210 is connected to the fixed shaft 100, and the other end 2102 is connected to the rotor 21. A chamber 211 is provided within the rotor 21, and the elastic element 210 is installed within the chamber 211. The disc structure of the rotor 21 facilitates the winding of the draw cord 22. It also facilitates the provision of the chamber 211 within the rotor 21 and the installation of the elastic element 210 within the chamber 211, thereby improving the integrity of the rotor 21 and the elastic element 210 and the concealment of the installation of the elastic element 210. Other pillow fabrics are less likely to become stuck in the elastic element 210, thereby affecting the use of the elastic element 210.

[0059] In the utility model of the airbag-type height-adjustable pillow, the rotor 21 is a disc structure, and the rotor 21 can be rotatably mounted on a fixed shaft 100 on the fixed frame 10. When the elastic element 210 is a flat spiral spring, the elastic element 210 is sleeved on the fixed shaft 100, and the inner end of the elastic element 210 is connected to the fixed shaft 100, and the outer end is connected to the rotor 21.

[0060] In the utility model of the airbag height-adjustable pillow, preferably, a groove 212 is formed on the peripheral wall of the rotor 21 along its circumference, and the first end 221 of the pull cord 22 is wound in the groove 212. The groove 212 limits the winding of the pull cord 22, making the retraction and extension of the pull cord 22 more reliable.

[0061] In the utility model, the airbag-type height-adjustable pillow preferably has a laminate 24 disposed above the pillow airbag 11, and the second end 222 of the drawstring 22 is connected to the laminate 24. The second end 222 of the drawstring 22 can be connected to the top of the pillow airbag 11, or to the top of the pillow core or pillowcase. Alternatively, a laminate 24 can be stacked above the pillow airbag 11, with the second end 222 of the drawstring 22 connected to the laminate 24. When the second end 222 of the drawstring 22 is connected to the top of the pillow airbag 11, the top of the pillow core, or the top of the pillowcase, the structure of the pillow airbag 11 or the pillowcase cannot be destroyed, making connection of the drawstring 22 relatively difficult and limited, often requiring only adhesive bonding, resulting in poor connection firmness and stability. After the laminate 24 is stacked on top of the pillow airbag 11, a hole can be opened on the laminate 24, and the drawstring 22 can pass through the laminate 24 and be tied and connected to the laminate 24. The drawstring 22 and the laminate 24 can also be sewn together with needle and thread. The connection setting of the drawstring 22 is simpler, and the connection is also more firm and reliable.

[0062] In the airbag-type height-adjustable pillow of the present invention, preferably, the laminate 24 is a laminate of cloth, and the cloth has good softness. The laminate with good softness has better fit with the pillow airbag 11.

[0063] In the utility model of the airbag-type height-adjustable pillow, the drawstring 22 preferably passes vertically through the pillow airbag 11. The drawstring 22 can be arranged at an angle or vertically. Compared to an angled arrangement, a vertical arrangement allows the retracted and extended length of the drawstring 22 to vary proportionally with the pillow height. The pillow height can be directly calculated based on the retracted and extended length of the drawstring 22, simplifying conversion calculations. Furthermore, after passing through the pillow airbag 11, the drawstring 22 can be conveniently routed through the bottom of the pillow. This route is less susceptible to damage and provides greater stability.

[0064] In the utility model of the airbag height-adjustable pillow, preferably, a guide wheel 25 is provided on the pulling path of the drawstring 22, and the drawstring 22 is wound around the guide wheel 25. The provision of the guide wheel 25 can facilitate the guidance and reversal of the pulling path of the drawstring 22, thereby making the pulling of the drawstring 22 more flexible and further facilitating the arrangement of various structures, especially the rotor 21 and the drawstring retracted length detection device 23.

[0065] In one embodiment of the airbag-type height-adjustable pillow of the present invention, the cord retracted / released length detection device 23 is any one of a rotary transformer, a photoelectric encoder, a resistive angular displacement sensor, a capacitive angular displacement sensor, and a magnetoelectric angular displacement sensor. The cord retracted / released length detection device 23 is configured to sense the angular displacement of the rotor 21. The cord retracted / released length detection device 23 can directly sense the rotational displacement and rotation angle of the rotor 21, and then calculate the retracted / released length of the cord 22 based on the radial dimension of the rotor 21 to determine the pillow height.

[0066] In another embodiment of the airbag-type height-adjustable pillow of the present invention, the drawstring retraction and extension length detection device 23 includes a gear 231, a rack 232, and a linear displacement sensor 233. The gear 231 is coaxially mounted on the rotor 21, and the rack 232 is slidably mounted on the fixed frame 10. The gear 231 and the rack 232 are meshed, and the linear displacement sensor 233 is used to sense and detect the linear displacement of the rack 232. During operation, as the drawstring 22 is retracted or extended, the rotor 21 rotates. The rotating rotor 21 sequentially drives the gear 231 and the rack 232, causing the rack 232 to move linearly. The linear displacement of the rack 232 is then sensed and detected by the linear displacement sensor 233, and the retraction and extension amount of the drawstring 22 can be calculated to obtain the height of the pillow.

[0067] In the utility model of the airbag-type height-adjustable pillow, the linear displacement sensor 233 is any one of a potentiometer displacement sensor, a linear displacement sensor, a Hall-type displacement sensor, a capacitive displacement sensor, an inductive displacement sensor, a grating displacement sensor, and a laser displacement sensor.

[0068] The utility model airbag type height adjustable pillow is preferably, as Figures 8 to 10As shown, the pillow airbag 11 is provided with an inflation assembly 12, which includes an air inlet pipe 121 and an air outlet pipe 122. The air inlet pipe 121 and the air outlet pipe 122 are both connected to the pillow airbag 11. The air inlet pipe 121 is equipped with an air pump 123 and a one-way valve 124, and the air outlet pipe 122 is equipped with a deflation valve 125. The air pump 123 is mounted on the fixing frame 10, and the one-way valve 124 is located between the air pump 123 and the pillow airbag 11. The one-way valve 124 is a one-way valve that conducts the air pump 123 toward the pillow airbag 11 and blocks the airbag 11 from the air pump 123. The one-way valve 124 is used to distribute the air path. When inflating the pillow airbag 11, the air pump 123 works to pump gas into the pillow airbag 11 along the air inlet pipe 121; when deflating the pillow airbag 11, the air release valve 125 opens and the gas in the pillow airbag 11 is discharged outward along the air outlet pipe 122.

[0069] The utility model airbag type height adjustable pillow is preferably, as Figure 11 As shown, the cord retracted length detection device 23, the air pump 123, and the air release valve 125 are each electrically connected to a control unit 40. When the cord retracted length detection device 23 includes a gear 231, a rack 232, and a linear displacement sensor 233, the linear displacement sensor 233, the air pump 123, and the air release valve 125 are each electrically connected to a control unit 40. The cord retracted length detection device 23 senses and detects the rotational displacement of the rotor 21 in real time. Based on the detected rotational displacement of the rotor 21, the control unit 40 calculates the pillow height and controls the air pump 123 and the air release valve 125. If the pillow height needs to be adjusted upward, the control unit 40 controls the air pump 123 to operate; if the pillow height needs to be adjusted downward, the control unit 40 controls the air release valve 125 to open.

[0070] In the utility model of the airbag height-adjustable pillow, the control unit 40 can be a single-chip microcomputer, an MCU controller, etc. The control unit 40 can be powered by a rechargeable battery, and the rechargeable battery is provided with comprehensive overvoltage, undervoltage, overcurrent, overheating and other protections during the charging and discharging process to ensure the safety of the battery.

[0071] In the utility model of the airbag-type height-adjustable pillow, preferably, a first pressure sensor 126 is installed on the air inlet pipe 121 or the air outlet pipe 122;

[0072] When the first pressure sensor 126 is installed on the air intake pipe 121 , the first pressure sensor 126 is located between the one-way valve 124 and the pillow airbag 11 ;

[0073] When the first pressure sensor 126 is installed on the air outlet pipe 122 , the first pressure sensor 126 is located between the air release valve 125 and the pillow airbag 11 ;

[0074] The first pressure sensor 126 is electrically connected to the control unit 40 .

[0075] In the utility model of the airbag-type height-adjustable pillow, the first pressure sensor 126 is used to sense the air pressure within the pillow airbag 11 in real time and transmit the sensed air pressure signal within the pillow airbag 11 to the control unit 40; the control unit 40 controls the air pump 123 and the air release valve 125 based on the air pressure signal within the pillow airbag 11. If the first pressure sensor 126 senses that the air pressure within the pillow airbag 11 is too high, posing a risk of explosion, the control unit 40 controls the air pump 123 to shut down and, if necessary, control the air release valve 125 to open. The provision of the first pressure sensor 126 monitors the air pressure within the pillow airbag 11, effectively preventing excessive air pressure within the pillow airbag 11 from posing a safety risk.

[0076] In the utility model, the airbag-type height-adjustable pillow is preferably provided with an air chamber 127 on the air inlet pipe 121 and the air outlet pipe 122. After the air chamber 127 is provided on the air inlet pipe 121 and the air outlet pipe 122, when the pillow airbag 11 is inflated or deflated, the gas passes through the air chamber 127. Due to the expansion of the air chamber 127, the pressure of the gas entering the air chamber 127 is instantly reduced. The air chamber 127 acts as a buffer for the flow of gas, which can greatly reduce the noise of the air in and out.

[0077] In the utility model of the airbag-type height-adjustable pillow, preferably, a silent cotton 1271 is provided in the air chamber 127. The silent cotton 1271 has a sound-absorbing effect and can effectively reduce gas noise.

[0078] In the utility model of the airbag-type height-adjustable pillow, the air pump 123 is preferably covered with a silicone vibration-damping sleeve 1231. The silicone vibration-damping sleeve 1231 acts as a shock absorber, effectively absorbing the vibrations of the air pump 123 during operation, thereby reducing noise. Furthermore, a sound-reducing material may be provided within the silicone vibration-damping sleeve 1231.

[0079] In the utility model of the airbag-type height-adjustable pillow, preferably, the silicone vibration-damping sleeve 1231 is connected to the fixing frame 10 via a shock-damping spring 1232. If the four corners of the silicone vibration-damping sleeve 1231 are connected to the fixing frame 10 via the shock-damping spring 1232, the provision of the shock-damping spring 1232 can greatly absorb the vibration of the air pump 123 during operation, thereby reducing noise.

[0080] In the airbag-type height-adjustable pillow of the present invention, the air inlet conduit 121 and the air outlet conduit 122 can be completely separate throughout their entire length, or they can share a portion of the conduit. When the air inlet conduit 121 and the air outlet conduit 122 share a portion of the conduit, the first pressure sensor 126 and the air chamber 127 can be located on separate sections of the air inlet conduit 121 or the air outlet conduit 122, or on a portion of the conduit shared by the air inlet conduit 121 or the air outlet conduit 122. The first pressure sensor 126 can also be located on the air chamber 127.

[0081] The utility model provides an airbag-type height-adjustable pillow, preferably, the pillow airbag 11 includes a neck airbag 111 and a head airbag 112, the neck airbag 111 and the head airbag 112 are completely separated and independently arranged, the neck airbag 111 and the head airbag 112 each correspond to one of the inflatable components 12; the neck airbag 111 and the head airbag 112 are horizontally arranged from front to back, wherein the neck airbag 111 corresponds to the position of the human neck, and the head airbag 112 corresponds to the position of the human head. Compared with the pillow airbag 11 which is a whole large one and serves as a pillow for both the neck and the head, the pillow airbag 11 of the utility model includes a neck airbag 111 and a head airbag 112. On the one hand, the size of each of the neck airbag 111 and the head airbag 112 is smaller, and the fluidity of the gas in the smaller neck airbag 111 and the head airbag 112 is relatively low, the structure is stronger, and the pillow airbag 11 is more stable when in use; on the other hand, the heights of the human neck position and the human head position are different, and this setting can facilitate the setting of the heights of the neck airbag 111 and the head airbag 112 respectively to adapt to the different heights of the human neck position and the human head position, thereby improving the comfort of the pillow.

[0082] In the utility model's height-adjustable airbag pillow, the neck airbag 111 and the head airbag 112 each preferably correspond to a pillow height detection mechanism 20. While the neck airbag 111 and the head airbag 112 are independently inflated and deflated by two sets of inflatable components 12, each also corresponds to a pillow height detection mechanism 20. This arrangement facilitates separate adjustment of the neck airbag 111 and the head airbag 112 based on the position of the neck and head, resulting in higher adjustment accuracy.

[0083] In the utility model of the airbag-type height-adjustable pillow, the head airbag 112 preferably includes two sub-airbags 1121 arranged horizontally from front to back. Compared to the entire head airbag 112, the head airbag 112 is divided into two sub-airbags 1121. On the one hand, the two sub-airbags 1121 are smaller in size, and the space within the small airbag is smaller. While the gas flow space is smaller, the small airbag has a stronger ability to restrain the small amount of gas within it, resulting in better airbag structure stability and higher deformation resistance of the entire pillow, making it less likely to deform significantly under pressure. On the other hand, it can also facilitate the formation of a channel 1122, providing a passage for the drawstring 22 to pass through the pillow airbag 11.

[0084] In addition, during sleep, the human body generally sleeps in two different positions: supine and side-lying. In these two different sleeping positions, the front-to-back position of the human body is relatively fixed and will not shift significantly. In contrast, when lying on the left, left side, or lying flat, the left-to-right position of the human body changes significantly and shifts significantly. In this case, if two or more sub-airbags are arranged horizontally in the left and right directions of the pillow, when leaning on one side during side-lying, the sub-airbags on one side are concentratedly compressed, which is prone to significant deformation and poor stability of the airbags. The utility model airbag-type height-adjustable pillow arranges the two or more sub-airbags 1121 in the head airbag 112 horizontally from front to back. Under this arrangement, when the human head rests on the head airbag 112, it is supported by the two or more sub-airbags 1121. Moreover, during sleep, whether lying on the back or on the side, the human head, which has a relatively fixed front-to-back position and will not shift significantly, always rests on the two or more sub-airbags 1121. The pressure on the head airbag is more uniform, and the stability when leaning on the head is better. The arrangement of the head airbag 112 with the sub-airbags 1121 arranged horizontally from front to back takes into account the actual sleeping conditions, provides strong support for the balanced force of the pillow, and effectively ensures the pillow's anti-deformation ability.

[0085] In the utility model of the airbag-type height-adjustable pillow, the fixing frame 10 preferably includes a base plate 101 and a cylindrical outer shell 102. The base plate 101 is located below the pillow airbag 11, and the cylindrical outer shell 102 is located behind the pillow airbag 11. The base plate 101 facilitates the arrangement of the pulling path of the guide wheel 25 and the pull rope 22. The inflatable component 12 is installed in the cylindrical outer shell 102. The cylindrical outer shell 102 is used to not only install the inflatable component 12, but also to conveniently protect the cylindrical outer shell 102 and prevent the inflatable component 12 from being crushed.

[0086] The airbag-type height-adjustable pillow of the present invention preferably further includes a row of second pressure sensors 30. A row of the second pressure sensors 30 is arranged along the width direction of the pillow, and a row of the second pressure sensors 30 is located in front of the pillow airbag 11, corresponding to the position of the human shoulder. The second pressure sensor 30 is used to sense the human body's lying position in real time. Specifically, if the compressed width sensed by the second pressure sensor 30 is wide, it is judged that the human body is lying on its back; if the compressed width sensed by the second pressure sensor 30 is narrow, it is judged that the human body is lying on its side. According to the different human lying positions sensed by the second pressure sensor 30, the control unit 40 can make different corresponding adjustments to the height of the pillow, so that the pillow height can be more in line with the changing human lying position, ensuring the comfort of the pillow at all times.

[0087] The utility model airbag height-adjustable pillow preferably includes a pillow core 13, wherein the pillow airbag 11 and the pillow height detection mechanism 20 are both installed in the pillow core 13. The setting of the pillow core 13 can be used as packaging and can also improve the comfort of the pillow.

[0088] In the utility model, the airbag-type height-adjustable pillow preferably has a pillow tongue 131 extending forward from the pillow core 13. The pillow tongue 131 corresponds to the position of the human cervical vertebrae, and the height of the pillow tongue 131 gradually decreases from back to front. The arrangement of the pillow tongue 131 facilitates the support of the human cervical vertebrae, prevents the human cervical vertebrae from being suspended in the air, and improves the comfort of the pillow.

[0089] The utility model discloses an airbag-type height-adjustable pillow, which can be used not only as a sleeping pillow, but also as a pillow for the lumbar vertebra, the cervical vertebra, etc.

[0090] For ordinary technicians in the technical field to which the utility model belongs, the utility model can make several simple deductions or substitutions without departing from the concept of the utility model, which should be regarded as falling within the scope of protection of the utility model.

Claims

1. An airbag-type height-adjustable pillow, comprising an airbag and a pillow height detection mechanism, characterized in that: The pillow height detection mechanism includes a rotor, a pull rope and a pull rope retraction length detection device. The rotor can be rotatably mounted on a fixed frame. The rotor is connected to an elastic element and can automatically rotate under the action of the preload force provided by the elastic element. The first end of the pull rope is wound on the rotor, and the second end of the pull rope is located above the pillow airbag and can move up and down with the height change of the pillow airbag. The pull rope retraction length detection device is used to detect the retraction length of the pull rope.

2. The airbag height-adjustable pillow according to claim 1, characterized in that: The elastic element is a spring, one end of which is connected to the fixing frame and the other end is connected to the rotor; the elastic element is a planar scroll spring.

3. The airbag height-adjustable pillow according to claim 1, characterized in that: The rotor is a disc structure and is rotatably mounted on a fixed shaft on the fixed frame. One end of the elastic element is connected to the fixed shaft and the other end is connected to the rotor. A chamber is provided inside the rotor, and the elastic element is installed in the chamber. A groove is provided on the peripheral wall of the rotor along its circumference, and the first end of the pull rope is wound in the groove.

4. The airbag height-adjustable pillow according to claim 1, characterized in that: A stack is provided above the pillow airbag, and the second end of the pull rope is connected to the stack; the pull rope passes vertically through the pillow airbag; a guide wheel is provided on the pulling path of the pull rope, and the pull rope is wound around the guide wheel.

5. The airbag height-adjustable pillow according to claim 1, characterized in that: The pull rope retraction length detection device is any one of a rotary transformer, a photoelectric encoder, a resistive angular displacement sensor, a capacitive angular displacement sensor, and a magnetoelectric angular displacement sensor, and is used to sense the angular displacement of the rotor.

6. The airbag height-adjustable pillow according to claim 1, characterized in that: The rope retraction and release length detection device includes a gear, a rack and a linear displacement sensor. The gear is coaxially mounted on the rotor, the rack is slidably mounted on the fixed frame, the gear is meshed with the rack, and the linear displacement sensor is used to sense and detect the linear displacement of the rack; the linear displacement sensor is any one of a potentiometer displacement sensor, a linear displacement sensor, a Hall-type displacement sensor, a capacitive displacement sensor, an inductive displacement sensor, a grating displacement sensor, and a laser displacement sensor.

7. The airbag height-adjustable pillow according to claim 1, characterized in that: The pillow airbag is provided with an inflation component, which includes an air inlet pipe and an air outlet pipe. The air inlet pipe and the air outlet pipe are respectively connected to the pillow airbag. An air pump and a one-way valve are installed on the air inlet pipe, and an air release valve is provided on the air outlet pipe; the pull rope retraction and extension length detection device, the air pump and the air release valve are respectively electrically connected to a control unit.

8. The airbag-type height-adjustable pillow according to claim 7, characterized in that: A first pressure sensor is installed on the air inlet pipe or the air outlet pipe; When a first pressure sensor is installed on the air intake pipe, the first pressure sensor is located between the one-way valve and the pillow airbag; When a first pressure sensor is installed on the air outlet pipe, the first pressure sensor is located between the air release valve and the pillow airbag; The first pressure sensor is electrically connected to the control unit.

9. The airbag height-adjustable pillow according to claim 7, characterized in that: The air inlet pipe and the air outlet pipe are further provided with air chambers; the air chambers are provided with sound-absorbing cotton; the air pump is sheathed with a silicone vibration-damping sleeve; the silicone vibration-damping sleeve is connected to the fixing frame via a shock-absorbing spring.

10. The airbag height-adjustable pillow according to claim 7, characterized in that: The pillow airbag includes a neck airbag and a head airbag, and the neck airbag and the head airbag each correspond to an inflatable component; the neck airbag and the head airbag are horizontally arranged from front to back, wherein the neck airbag corresponds to the position of the human neck, and the head airbag corresponds to the position of the human head; the head airbag includes two sub-airbags arranged horizontally from front to back; the neck airbag and the head airbag each correspond to a pillow height detection mechanism.

11. The airbag height-adjustable pillow according to claim 1, characterized in that: It also includes a row of second pressure sensors, which are arranged along the width direction of the pillow and a row of second pressure sensors located in front of the pillow airbags, corresponding to the shoulder position of the human body.

12. The airbag height-adjustable pillow according to claim 1, characterized in that: It also includes a pillow core, in which the pillow airbag and the pillow height detection mechanism are both installed; the pillow core extends forward to form a pillow tongue, which corresponds to the position of the human cervical vertebra, and the height of the pillow tongue gradually decreases from back to front.

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