Waist rest with automatic waist chasing function

Abstract

The invention relates to the field of waist rests, in particular to a waist rest with an automatic waist chasing function, which comprises a waist rest body and a back cushion body, the back cushion body is positioned in a waist supporting area of the waist rest body, the waist rest further comprises a power telescopic part, one end of the power telescopic part is fixedly connected with the waist rest body, and the other end of the power telescopic part is fixedly connected with the back cushion body. The other end of the power telescopic piece is fixedly connected with the back cushion body, and the power telescopic piece is of an air bag telescopic structure; the inflation pump is communicated with the power telescopic part through an electromagnetic valve so as to inflate the power telescopic part, and the electromagnetic valve is used for controlling inflation and deflation of the power telescopic part; the pressure sensor is used for detecting the pressure borne by the back cushion body; the control panel controls the inflator pump and the electromagnetic valve to work cooperatively based on a detection numerical value of the pressure sensor so as to achieve stretching and retracting of the power telescopic part; the back cushion body can be dynamically matched with the supporting force along the self-adaptive displacement, and the use comfort of the waist cushion is improved.

Description

Technical Field

[0001] This invention relates to the field of lumbar support, and more particularly to a lumbar support with an automatic waist-tracking function. Background Technology

[0002] Most existing lumbar support products use a fixed structure. Fixed lumbar support can only provide a single form of lumbar support and cannot adjust the support position and intensity in real time according to the dynamic changes in the user's sitting posture (such as leaning forward or backward when working), thus failing to effectively relieve lumbar muscle fatigue.

[0003] In view of the shortcomings of the existing technology, there is an urgent need for a lumbar support product with automatic waist-tracking function. Summary of the Invention

[0004] The purpose of this invention is to provide a lumbar support with an automatic waist-tracking function to solve the problem that current lumbar supports are difficult to adapt to the dynamic changes in the user's sitting posture.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A lumbar support with automatic waist-adjusting function includes a lumbar support body and a backrest body, wherein the backrest body is located in the lumbar support area of ​​the lumbar support body, and the lumbar support also includes: A power telescopic component, one end of which is fixedly connected to the lumbar support body and the other end of which is fixedly connected to the backrest body, wherein the power telescopic component is an airbag telescopic structure; An air pump is connected to the power telescopic member via a solenoid valve to inflate it, and the solenoid valve is used to control the inflation and deflation of the power telescopic member. A pressure sensor is used to detect the pressure exerted on the cushion body; The control board controls the air pump and solenoid valve to work together based on the detection values ​​of the pressure sensor to realize the extension and retraction of the power telescopic component.

[0006] Furthermore, the power telescopic component includes: The spiral frame is formed by spirally winding an elastic strip, with its circumferential direction being the thickness direction of the elastic strip and its radial direction being the width direction of the elastic strip. One end of the spiral frame is fixedly connected to the lumbar support body, and the other end is fixedly connected to the cushion body. A spiral airbag is provided, which is coaxially arranged with the spiral skeleton and the two are intertwined. One end of the spiral airbag is provided with an inflation port, which is connected to the solenoid valve.

[0007] Furthermore, the spiral skeleton has a double helix structure, and there are two spiral airbags arranged in a double helix structure.

[0008] Furthermore, the pressure sensor is a flexible thin-film pressure sensor, which is embedded in the side of the cushion body facing the human body.

[0009] Furthermore, the pressure sensor is a pneumatic sensor, which is integrated into the air circuit of the power telescopic component.

[0010] Furthermore, the lumbar support also includes: Side airbags are located between the lumbar support body and the backrest body. There are two side airbags, which are symmetrically distributed on the left and right sides of the backrest body. Each side airbag is independently connected to a solenoid valve and an air pump branch.

[0011] Furthermore, two pressure sensors are provided, which are respectively arranged in the left and right waist bearing areas of the cushion body, and their output signals are input to the control board after differential operation.

[0012] Furthermore, the lumbar support also includes: A limiting telescopic component, one end of which is fixedly connected to the lumbar support body and the other end of which is fixedly connected to the backrest body, is used to limit the position of the backrest body.

[0013] Furthermore, the limiting telescopic member includes: The limiting outer tube is a tapered tube, the large end of which is fixed to the lumbar support area on the lumbar support body; The core rod is a tapered rod with its large end outer diameter larger than the small end inner diameter of the limiting outer tube. The core rod is slidably connected to the limiting outer tube, and the small end of the core rod is fixedly connected to the cushion body.

[0014] In summary, the present invention has the following advantages compared with the prior art: The lumbar support with automatic waist-tracking function disclosed in this invention uses a pressure sensor to detect the real-time lumbar pressure distribution. After analysis by the control board, the control board drives the solenoid valve to regulate the inflation and deflation of the power telescopic component, thereby achieving dynamic matching between the cushion body and the support force along the adaptive displacement, and improving the comfort of using the lumbar support. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the lumbar support with automatic waist-tracking function disclosed in an embodiment of the present invention.

[0016] Figure 2 This is an exploded view of a lumbar support with automatic waist-tracking function disclosed in an embodiment of the present invention.

[0017] Figure 3 This is a front view of a lumbar support with automatic waist-tracking function disclosed in an embodiment of the present invention.

[0018] Figure 4 for Figure 3 Sectional view of AA.

[0019] Figure 5 for Figure 4 A magnified view of a section at point I.

[0020] Figure 6 for Figure 3 A cross-sectional view of BB.

[0021] Figure 7 for Figure 6 A magnified view of a section at point II.

[0022] Figure 8 This is a schematic diagram of the structure of the power telescopic component in the lumbar support with automatic waist-tracking function disclosed in an embodiment of the present invention. Figure label: 100. Lumbar support body; 110. Lumbar support area; 111. Equipment box; 112. Dust cover; 113. Telescopic cavity; 114. Equipment cavity; 120. Seat cushion area; 130. Transition area; 200. Backrest body; 210. Hard board; 220. Central area soft cushion; 221. Backrest protrusion; 230. Side area soft cushion; 300. Seat cushion body; 310. Base plate; 320. Hip cushion; 330. Perineal pad; 331, perineal protrusion; 400, power telescopic component; 410, spiral frame; 411, tail plate; 412, frame body; 413, end plate; 420, spiral airbag; 421, inflation port; 500, limiting telescopic component; 510, outer limiting tube; 520, intermediate limiting tube; 530, core rod; 600, air pump; 700, side airbag; 710, side air port; 800, control panel. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a lumbar support with an automatic waist-tracking function, including a lumbar support body 100, a cushion body 200, a power telescopic component 400, an air pump 600, a pressure sensor, and a control board 800. The cushion body 200 is located in the lumbar support area 110 of the lumbar support body 100. One end of the power telescopic component 400 is fixedly connected to the lumbar support body 100, and the other end is fixedly connected to the cushion body 200. The power telescopic component 400 is an airbag telescopic structure. The air pump 600 is connected to the power telescopic component 400 through a solenoid valve to inflate it. The solenoid valve is used to control the inflation and deflation of the power telescopic component 400. The pressure sensor is used to detect the pressure borne by the cushion body 200. The control board 800 controls the air pump 600 and the solenoid valve to work together based on the detection value of the pressure sensor to realize the telescopic extension and retraction of the power telescopic component 400.

[0025] In this embodiment, when a user uses the lumbar support disclosed in this application, the control board 800 inside the lumbar support is activated. The system automatically calibrates the initial position. After the user sits down, the pressure sensor captures the changes in lumbar force in real time. According to the pressure threshold preset by the customer, the control board 800 immediately drives the air pump 600 or the solenoid valve to work, so that the power telescopic component 400 can be precisely extended and retracted, pushing the cushion body 200 to dynamically conform to the curvature of the lumbar spine. If the lumbar pressure detected by the pressure sensor increases, the control board 800 determines that the lumbar spine has shifted backward. Then, the control board 800 controls the solenoid valve to connect the power telescopic component 400 to the external space (i.e., external air), so that the cushion body 200 moves backward to support the lumbar spine. When the pressure decreases, it is determined that the lumbar spine is tilted forward. The control board 800 controls the solenoid valve to connect the air pump 600 and the power telescopic component 400. The air pump 600 inflates the power telescopic component 400, pushing the cushion body 200 forward to maintain lumbar support.

[0026] Specifically, in this embodiment, such as Figure 2 As shown, the lumbar support body 100 is a prior art technology. The lumbar support body 100 is L-shaped and includes a lumbar support area 110, a seat cushion area 120, and a transition area 130. The lumbar support area 110 is located in the vertical section of the L-shape, and the surface of the lumbar support area 110 is an arc-shaped structure that conforms to the physiological curvature of the human lumbar spine. The seat cushion area 120 is located in the horizontal section of the L-shape, and the seat cushion area 120 is a slightly concave structure that conforms to the curve of the human buttocks. The transition area 130 smoothly connects the lumbar support area 110 and the seat cushion area 120. The transition area 130 is a concave curved surface, thereby providing basic support. The lumbar support area 110, the seat cushion area 120, and the transition area 130 are integrally molded structures, which are made of high-resilience plastic using a compression molding process.

[0027] Preferably, in order to reduce stress concentration, the transition zone 130 is also provided with strain holes. The strain holes are set based on finite element simulation. The strain holes are located on both sides of the center of the transition zone 130 and are elliptical in shape.

[0028] Preferably, the seat cushion area 120 is also provided with ventilation holes at the thigh support area and the buttock support area. The ventilation holes are based on finite element simulation, so that the seat cushion area 120 is set with a maximum radius while providing effective support.

[0029] Preferably, in this embodiment, such as Figure 2 , Figure 4 and Figure 5 As shown, a device box 111 is also provided on the side of the lumbar support body 100 away from the cushion body 200. The device box 111 has a cylindrical structure. The interior of the device box 111 is divided into a telescopic cavity 113 and a device cavity 114 by a partition structure. The power telescopic component 400 is located inside the telescopic cavity 113. The end of the power telescopic component 400 is fixedly connected to the partition structure by screws. The control board 800 and the air pump 600 are installed in the device cavity 114. The device box 111 is fixedly connected to the lumbar support body 100 by welding. A dust cover 112 is fixedly connected to the end of the device box 111 away from the lumbar support body 100 by threads. The dust cover 112 is a detachable end cap.

[0030] like Figure 2 As shown, the cushion body 200 includes a rigid board 210, a central soft cushion 220, and side soft cushions 230. The rigid board 210 is a rigid support plate that conforms to the curved surface of the lumbar support area. The central soft cushion 220 and the side soft cushions 230 are both flexible cushioning layers, respectively covering the middle position and the left and right sides of the rigid board 210. The rigid board 210 is fixedly connected to the central soft cushion 220 and the side soft cushions 230. The central soft cushion 220 is a flexible cushioning layer that conforms to the middle position of the waist, and the side soft cushions 230 are flexible cushioning layers that conform to the sides of the waist. The central soft cushion 220 and the side soft cushions 230 are both flexible fabric covers filled with memory foam, and their exteriors are covered with far-infrared fabric.

[0031] Preferably, the central cushion 220 is also provided with a plurality of backrest protrusions 221, and magnets are embedded inside the backrest protrusions 221. The distribution of the backrest protrusions 221 is set based on the distribution map of acupoints in the human waist. When the user leans against it, the magnets correspond to acupoints such as Mingmen, Shenshu, and Dachangshu in the waist, so as to realize the auxiliary physiotherapy function.

[0032] As a preferred embodiment of this example, Figure 2 and Figure 8 As shown, the power telescopic component 400 includes a spiral skeleton 410 and a spiral airbag 420. The spiral skeleton 410 is formed by spirally winding an elastic strip, with its circumferential direction being the thickness direction of the elastic strip and its radial direction being the width direction of the elastic strip. One end of the spiral skeleton 410 is fixedly connected to the lumbar support body, and the other end is fixedly connected to the backrest body. The spiral airbag 420 is coaxially arranged with the spiral skeleton 410, and the two are intertwined. One end of the spiral airbag 420 is provided with an inflation port, which is connected to the solenoid valve.

[0033] Specifically, in this embodiment, the spiral frame 410 includes a tail plate 411, a frame body 412, and an end plate 413. The frame body 412 is a double-helix elastic strip. The tail plate 411 and the end plate 413 are both annular structures. The tail plate 411 and the end plate 413 are fixedly connected to both ends of the frame body 412 by welding. The tail plate 411 is fixedly connected to the partition inside the device box 111 by screws. The end plate 413 is fixedly connected to the rigid plate 210 by rivets or screws. The spiral airbag 420 is an elastic airbag. The end of the inflation port 421 is provided with an inflation port 421, which penetrates the tail plate 411 and the partition inside the device box 111.

[0034] In this embodiment, the pressure sensor is a flexible thin-film pressure sensor or a pneumatic pressure sensor. When it is a flexible thin-film pressure sensor, the pressure sensor is embedded in the side of the cushion body 200 facing the human body; when it is a pneumatic pressure sensor, the pressure sensor is integrated into the air path of the spiral airbag 420.

[0035] As a preferred embodiment of this example, Figure 2 , Figure 5 and Figure 6 As shown, the lumbar support also includes side airbags 700. The side airbags 700 are located between the lumbar support body 100 and the cushion body 200. There are two side airbags 700, which are symmetrically distributed on the left and right sides of the cushion body 200. Each side airbag 700 is independently connected to a solenoid valve and an inflation branch.

[0036] Specifically, the side of the lumbar support body 100 that fits against the cushion body 200 is provided with a groove for placing the side airbags 700. The side airbags 700 are fixedly connected to the lumbar support body 100 by adhesive. The side air port 710 on the side airbags 700 passes through the lumbar support body 100 and is connected to the solenoid valve. In this embodiment, the spiral airbag 420 and the side airbags 700 on both sides are independently connected to a solenoid valve to achieve precise air pressure regulation of the three, thereby adjusting the lumbar support force and lateral wrapping force in real time according to the user's sitting posture.

[0037] Preferably, two pressure sensors are provided, which are respectively arranged in the left and right lumbar support areas of the cushion body. The output signals are input to the control board 800 after differential operation. The control board 800 dynamically determines the direction and magnitude of the user's sitting posture deviation based on the differential signal, thereby judging the user's sitting posture. When the differential signal exceeds a preset threshold, the control board 800 triggers voice prompts and sitting posture correction vibration feedback based on the built-in reminder structure, and simultaneously adjusts the inflation volume of the spiral airbag 420 and the two side airbags 700 to restore the body's center of gravity balance.

[0038] As a preferred embodiment of this example, Figure 4 and Figure 5 As shown, the lumbar support also includes a limiting telescopic member 500. One end of the limiting telescopic member 500 is fixedly connected to the lumbar support body 100, and the other end is fixedly connected to the cushion body 200, for limiting the cushion body 200.

[0039] Specifically, in this embodiment, the limiting telescopic component 500 includes an outer limiting tube 510 and a core rod 530. The outer limiting tube 510 is a cylindrical tube with an opening at one end. The outer limiting tube 510 is a tapered tube. The closed end of the outer limiting tube 510 is the large end, and the open end is the small end. The large end of the outer limiting tube 510 is fixed to the partition plate inside the equipment box 111 by a threaded connection. The core rod 530 is a tapered rod. The outer diameter of the large end of the core rod 530 is larger than the inner diameter of the small end of the outer limiting tube 510. The small end of the core rod 530 is fixed to the rigid plate 210 by a threaded structure. The core rod 530 is slidably connected to the inside of the outer limiting tube 510.

[0040] Preferably, the limiting telescopic component 500 further includes an intermediate limiting tube 520, which is a tapered tube disposed between the outer limiting tube 510 and the core rod 530. The outer diameter of the large end of the intermediate limiting tube 520 is larger than the inner diameter of the small end of the outer limiting tube 510, and the outer diameter of the large end of the core rod 530 is larger than the inner diameter of the small end of the intermediate limiting tube 520. The three together form a progressive mechanical limiting structure.

[0041] Preferred, such as Figure 2 As shown, the lumbar support also includes a seat cushion body 300, which is fixedly connected to the seat cushion area 120. The seat cushion body 300 includes a base plate 310, a buttock cushion 320, and a perineal cushion 330. The base plate 310 is attached to a curved hard plate on the seat cushion area 120 and is fixedly connected to the seat cushion area 120 by adhesive. The buttock cushion 320 is a flexible support layer that fits the buttocks and thighs. The perineal cushion 330 is located at the perineum and is a flexible layer. The perineal cushion 330 has a built-in flexible memory foam and is covered with far-infrared breathable material. The perineal cushion 330 has a perineal protrusion 331 with a built-in magnet, and the perineal protrusion 331 corresponds to the perineal acupoint.

[0042] The air pump 600 and the control board 800 are both existing technologies. The air pump 600 is a plunger pump, and the control board 800 has a built-in power module and a microprocessor.

[0043] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0044] It should be understood that although the terms first, second, third, etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of this invention, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lumbar support with an automatic waist-adjusting function, comprising a lumbar support body and a cushion body, wherein the cushion body is located in the lumbar support area of ​​the lumbar support body, characterized in that, The lumbar support also includes: A power telescopic component, one end of which is fixedly connected to the lumbar support body and the other end of which is fixedly connected to the backrest body, wherein the power telescopic component is an airbag telescopic structure; An air pump is connected to the power telescopic member via a solenoid valve to inflate it, and the solenoid valve is used to control the inflation and deflation of the power telescopic member. A pressure sensor is used to detect the pressure exerted on the cushion body; The control board controls the air pump and solenoid valve to work together based on the detection values ​​of the pressure sensor to realize the extension and retraction of the power telescopic component.

2. The lumbar support with automatic waist-tracking function according to claim 1, characterized in that, The power telescopic component includes: The spiral frame is formed by spirally winding an elastic strip, with its circumferential direction being the thickness direction of the elastic strip and its radial direction being the width direction of the elastic strip. One end of the spiral frame is fixedly connected to the lumbar support body, and the other end is fixedly connected to the cushion body. A spiral airbag is provided, which is coaxially arranged with the spiral skeleton and the two are intertwined. One end of the spiral airbag is provided with an inflation port, which is connected to the solenoid valve.

3. The lumbar support with automatic waist-tracking function according to claim 2, characterized in that, The spiral skeleton has a double helix structure, and there are two spiral airbags, which are arranged in a double helix structure.

4. The lumbar support with automatic waist-tracking function according to claim 1, characterized in that, The pressure sensor is a flexible thin-film pressure sensor, which is embedded in the side of the cushion body facing the human body.

5. The lumbar support with automatic waist-tracking function according to claim 1, characterized in that, The pressure sensor is a pneumatic sensor, which is integrated into the air circuit of the power telescopic component.

6. The lumbar support with automatic waist-tracking function according to any one of claims 1-5, characterized in that, The lumbar support also includes: Side airbags are located between the lumbar support body and the backrest body. There are two side airbags, which are symmetrically distributed on the left and right sides of the backrest body. Each side airbag is independently connected to a solenoid valve and an air pump branch.

7. The lumbar support with automatic waist-tracking function according to claim 6, characterized in that, Two pressure sensors are provided, which are respectively arranged in the left and right waist bearing areas of the cushion body. Their output signals are input to the control board after differential calculation.

8. The lumbar support with automatic waist-tracking function according to any one of claims 1-5, characterized in that, The lumbar support also includes: A limiting telescopic component, one end of which is fixedly connected to the lumbar support body and the other end of which is fixedly connected to the backrest body, is used to limit the position of the backrest body.

9. The lumbar support with automatic waist-tracking function according to claim 8, characterized in that, The limiting telescopic component includes: The limiting outer tube is a tapered tube, the large end of which is fixed to the lumbar support area on the lumbar support body; The core rod is a tapered rod with its large end outer diameter larger than the small end inner diameter of the limiting outer tube. The core rod is slidably connected to the limiting outer tube, and the small end of the core rod is fixedly connected to the cushion body.

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