An automatic lumbar support cushion

Abstract

This utility model relates to the field of backrest technology and discloses an automatic lumbar support cushion, including a cushion body, a lumbar support a, and an elastic bracket. The lumbar support a has several positioning frames integrally connected to its back side. Two sets of mounting brackets are integrally installed on both the front and back sides of the backrest of the cushion body. The front side of each mounting bracket has a four-position adjustment hole, and the back side of each mounting bracket has several limiting grooves. When the human waist moves, the waist exerts pressure on the lumbar support a and lumbar support b in different directions. The springs on the left or right sides will compress or extend accordingly. Using the elastic potential energy of the springs, the lumbar support a and lumbar support b will shift left and right, achieving a lateral adaptive fit to the waist. Simultaneously, the elastic deformation of the springs can buffer the force of the waist's vertical movement, allowing the lumbar support a and lumbar support b to move slightly up and down with the waist. Combined with the close support of the support plate and the mounting brackets, an all-around adaptive lumbar support effect is formed, maintaining close contact with the waist at all times.

Description

Technical Field

[0001] This utility model relates to the field of impurity removal devices, and in particular to an automatic waist-tracking cushion. Background Technology

[0002] Backrests can adjust the contact points between the human body and seats or beds, helping people achieve a more comfortable angle and thus reducing physical fatigue. For people who sit or lie down for long periods of time, backrests can provide good support and help maintain the normal physiological curvature of the spine. Placing a backrest on the lower back can also help maintain the normal physiological curvature of the lumbar spine, preventing and relieving lower back pain and fatigue caused by prolonged sitting or poor posture.

[0003] An existing lumbar and hip posture correction massage cushion (publication number: CN108354824A) has at least the following drawbacks: The cushion in this prior art relies on a first soft cushion, a second soft cushion, a third soft cushion, and a fourth soft cushion to support the user's waist and hips. However, the first soft cushion and the second soft cushion are fixedly connected to the cushion, and cannot provide automatic lumbar support for the user. When the user bends over, turns to the side, or changes their sitting posture, a gap will appear between the lumbar support and the waist, and they cannot maintain a continuous fit, resulting in support failure. The unsupported part of the waist is prone to fatigue due to lack of support. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic waist-supporting cushion.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic lumbar support cushion includes a cushion body, a lumbar support (a), and an elastic bracket. The lumbar support (a) has several positioning frames integrally connected to its back side. Two sets of mounting brackets are integrally mounted on both the front and rear sides of the cushion body's backrest. Each mounting bracket has a four-position adjustment hole through its front side and several limiting grooves on its back side, located behind the four-position adjustment holes. The elastic bracket includes a support plate, springs, and positioning plates. The positioning plates are bolted to the positioning brackets. Several positioning plates are distributed at both ends of the support plate. Both ends of the springs are respectively fixedly connected to one side of the positioning plate and one end of the support plate. One side of the support plate is attached to the front side of the mounting brackets. A positioning bolt is provided on the back side of the mounting brackets. The positioning bolt passes through the four-position adjustment holes and is threaded into a threaded hole in the middle of one side of the support plate. The side of the positioning bolt away from the elastic bracket abuts against the limiting grooves. The positioning bolt and the elastic bracket are positioned by clamping the mounting brackets on the front and rear sides of the cushion body.

[0007] As a further embodiment of this utility model, the lumbar support is movably connected to the front side of the cushion body via an elastic bracket and a positioning bolt. Several rubber tubes are provided between the positioning plate and the bracket. The rubber tubes are sleeved on the outside of the spring, and the two ends of the rubber tubes are fixedly connected to the positioning plate and the support plate, respectively.

[0008] As a further embodiment of this utility model, a lumbar support b is provided on one side of the lumbar support a. The structure of the lumbar support b is the same as that of the lumbar support a. The lumbar support b and the lumbar support a are installed in the same way. The lumbar support a and the lumbar support b are symmetrically distributed on the front side of the back cushion of the cushion body.

[0009] As a further embodiment of this utility model, the back and front sides of the cushion body are integrally connected with reinforcing ribs, the reinforcing ribs are located at the bottom of the lumbar support a, and an exhaust hole is provided through the seat surface of the cushion body, with a seat cushion provided outside the exhaust hole.

[0010] As a further embodiment of this utility model, the bottom of the seat cushion is in contact with the top curved surface of the seat surface of the backrest body, the top of the seat cushion is provided with a number of grooves, the top of the seat cushion is provided with a number of lumbar pads, the lumbar pads have the same structure as the seat cushion, and the number of lumbar pads are located on the side of lumbar support a and lumbar support b.

[0011] As a further embodiment of this utility model, the front sides of the lumbar support a, lumbar support b, and cushion body are all provided with a plurality of fastening holes, and the front side of the cushion body is provided with a plurality of pressing buckles. The plurality of pressing buckles are fixedly connected to the lumbar cushion and the seat cushion. The pressing buckles are fixedly connected to the fastening holes by pressing. The seat cushion and the plurality of lumbar cushions are all fixedly connected to the lumbar support a, lumbar support b, and cushion body by pressing buckles.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. When the human waist moves, the waist exerts pressure on the lumbar support a and lumbar support b in different directions. The left or right spring will compress or extend accordingly. With the help of the elastic potential energy of the spring, the lumbar support a and lumbar support b will shift left and right, achieving lateral adaptive fit to the waist. At the same time, the elastic deformation of the spring can buffer the force of the waist's up and down movement, so that the lumbar support a and lumbar support b move slightly up and down with the waist. With the close support of the support plate and mounting bracket, an all-round adaptive waist-tracking effect is formed, always maintaining close contact with the waist. The elastic adjustment of the left and right double springs allows the lumbar support a and lumbar support b to follow the waist movement in real time. No matter how the sitting posture changes, it can closely fit the waist curve, distribute the pressure on the waist, and relieve the soreness caused by prolonged sitting.

[0014] 2. The snap fastener consists of elastic claws and a base. When the snap fastener is aligned with the buckle hole and pressed, the elastic claws are compressed and contract, passing through the buckle hole. The claws elastically return to their original position the instant they pass through, and their ends are locked inside the buckle hole, thus forming a fixed connection between the lumbar cushion, seat cushion, lumbar support a, lumbar support b, and the main body of the backrest. This makes the installation of the seat cushion and lumbar cushion more convenient and allows for easy replacement of the seat cushion and lumbar cushion according to different needs and scenarios. When disassembling, pull the lumbar cushion or seat cushion in the opposite direction, and the elastic claws will contract again and disengage from the buckle hole, achieving separation. The detachable structure allows the seat cushion and lumbar cushion to be removed separately for cleaning, avoiding the tediousness of cleaning the entire backrest body and maintaining product hygiene. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an automatic waist-supporting cushion proposed in this invention;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of an automatic waist-supporting cushion proposed in this invention;

[0017] Figure 3 This is a schematic diagram of the main body of an automatic waist-tracking backrest cushion proposed in this invention;

[0018] Figure 4 This is a schematic diagram of the back side structure of the main body of an automatic waist-following backrest cushion proposed in this invention.

[0019] Figure 5 This is a schematic diagram of the structure of an automatic lumbar support cushion a proposed in this invention;

[0020] Figure 6 This is a schematic diagram showing the disassembled structure of the elastic support of an automatic lumbar support cushion proposed in this invention.

[0021] Figure 7 This is a schematic diagram of the structure of an automatic waist-supporting cushion proposed in this invention.

[0022] In the diagram: 1. Cushion body; 101. Vent hole; 102. Reinforcing rib; 103. Mounting bracket; 104. Four-position adjustment hole; 105. Limiting groove; 106. Fastening hole; 2. Lumbar support a; 201. Positioning bracket; 3. Elastic support; 301. Support plate; 302. Spring; 303. Rubber tube; 304. Positioning plate; 4. Positioning bolt; 5. Lumbar support b; 6. Seat cushion; 601. Groove; 7. Lumbar pad; 8. Fastening hole; 9. Press-button buckle. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Reference Figures 1-7 An automatic lumbar support cushion includes a cushion body 1, a lumbar support a2, and an elastic bracket 3. The lumbar support a2 has several positioning frames 201 integrally connected to its back. Two sets of mounting frames 103 are integrally installed on both the front and rear sides of the back of the cushion body 1. The front of each mounting frame 103 has a four-position adjustment hole 104, and the back of each mounting frame 103 has several limiting grooves 105 located behind the four-position adjustment holes 104. The elastic bracket 3 includes a support plate 301, a spring 302, and a positioning plate 304. The positioning plate 304 is fixedly connected to the positioning frame a2 by bolts. On 01, several positioning plates 304 are distributed at both ends of the support plate 301. The two ends of the spring 302 are respectively fixedly connected to one side of the positioning plate 304 and one end of the support plate 301. One side of the support plate 301 is attached to the front side of the mounting bracket 103. The back side of the mounting bracket 103 is provided with a positioning bolt 4. The positioning bolt 4 passes through the four-position adjustment hole 104 and is threadedly connected to the threaded hole in the middle of one side of the support plate 301. The side of the positioning bolt 4 away from the elastic bracket 3 abuts against the limiting groove 105. The positioning bolt and the elastic bracket 3 are positioned by clamping the mounting bracket 103 on the front and rear sides of the cushion body 1.

[0027] In use, when the human waist moves, the waist exerts pressure on the lumbar support a2 and lumbar support b5 in different directions. The left or right spring 302 will compress or extend accordingly. With the elastic potential energy of the spring 302, the lumbar support a2 and lumbar support b5 will shift left and right, achieving a lateral adaptive fit to the waist. At the same time, the elastic deformation of the spring 302 can buffer the force of the waist's up and down movement, so that the lumbar support a2 and lumbar support b5 move slightly up and down with the waist. With the close support of the support plate 301 and the mounting bracket 103, a comprehensive adaptive waist-tracking effect is formed, maintaining close contact with the waist at all times. The elastic adjustment of the left and right double springs 302 allows the lumbar support a2 and lumbar support b5 to follow the movement of the waist in real time. No matter how the sitting posture changes, they can closely fit the waist curve, distribute the pressure on the waist, and relieve the soreness caused by sitting for a long time. The user can turn the positioning bolt 4, and the positioning bolt 4 will loosen and move up and down in the four-position adjustment hole 104, so that the elastic bracket 3 moves to the target position. Then tighten the bolt so that the end is locked into the corresponding limit groove 105, which can fix the height of the lumbar support a2 and lumbar support b5. The four-position adjustment hole 104 provides different height positions to meet the lumbar support needs of users of different heights.

[0028] In this embodiment, the lumbar support is movably connected to the front side of the cushion body 1 via the elastic bracket 3 and the positioning bolt 4. Several rubber tubes 303 are provided between the positioning plate 304 and the bracket. The rubber tubes 303 are sleeved on the outside of the spring 302. The two ends of the rubber tubes 303 are fixedly connected to the positioning plate 304 and the support plate 301, respectively.

[0029] When in use, when the spring 302 extends and deforms due to the adaptive waist-following action of the lumbar support a2 and lumbar support b5, the rubber tube 303 moves synchronously with the spring 302. Its soft and wear-resistant material can effectively prevent external dust, moisture, liquid and other impurities from entering the interior of the spring 302, avoiding the spring 302 from rusting or corroding due to foreign matter. The rubber tube 303 can buffer the friction and impact generated when the spring 302 extends and retracts, and play a certain damping role on the vibration of the spring 302, making the extension and retraction process of the spring 302 more stable.

[0030] In this embodiment, a lumbar support b5 is provided on one side of the lumbar support a2. The structure of the lumbar support b5 is the same as that of the lumbar support a2. The lumbar support b5 and the lumbar support a2 are installed in the same way. The lumbar support a2 and the lumbar support b5 are symmetrically distributed on the front side of the back cushion of the cushion body 1.

[0031] When in use, the lumbar supports a2 and b5 can independently adjust themselves up, down, left, and right according to the different pressures on both sides of the waist, through the extension and retraction of the spring 302 and the guidance of the rubber tube 303, without interfering with each other. They provide differentiated support for different asymmetrical waist shapes of different users, such as scoliosis and habitual tilting, and avoid local pressure or insufficient support caused by the one-piece connection of the lumbar supports a2 and b5, which may cause discomfort to the user.

[0032] In this embodiment, the back and front sides of the cushion body 1 are integrally connected with reinforcing ribs 102. The reinforcing ribs 102 are located at the bottom of the lumbar support a2. An exhaust hole 101 is provided through the seat surface of the cushion body 1, and a seat cushion 6 is provided outside the exhaust hole 101.

[0033] When in use, the reinforcing rib 102 fits the curved surfaces of the front and rear sides of the cushion body 1 to provide rigid support. It can disperse the pressure transmitted to the cushion body 1 by the lumbar support a2 and lumbar support b5. When the lumbar support a2 and lumbar support b5 generate pushing or pulling forces on the cushion body 1 during the adaptive lumbar tracking process, the reinforcing rib 102 can resist deformation through its own structural strength and evenly distribute the force to the entire cushion body 1, avoiding local deformation due to excessive force.

[0034] In this embodiment, the bottom of the seat cushion 6 is in contact with the top curved surface of the seat surface of the backrest body 1. The top of the seat cushion 6 is provided with a number of grooves 601. The top of the seat cushion 6 is provided with a number of lumbar pads 7. The lumbar pads 7 have the same structure as the seat cushion 6. The number of lumbar pads 7 are located on the side of the lumbar support a2 and the lumbar support b5.

[0035] In use, the lumbar cushion 7 and the seat cushion 6 have the same structure and are also equipped with grooves 601. However, the seat cushion 6 and the lumbar cushion 7 have different shapes and conform to the curved surfaces of the backrest body 1, the lumbar support a2, and the lumbar support b5, respectively. The exhaust vent 101 and the grooves 601 work together to form an efficient heat dissipation and support system. The heat generated by the user's contact and friction with the seat cushion 6 will compress the air in the exhaust vent 101 as the seat cushion 6 deforms slightly during body movement, accelerating air circulation. At the same time, the grooves 601 on the seat cushion 6 and the lumbar cushion 7 deform with body pressure, providing both the space for expansion and contraction to adapt to body movement and maintain a close fit. They also form air circulation channels through the gaps between the grooves, which, together with the exhaust vent 101, enhance heat dissipation and prevent stuffiness from prolonged sitting. In addition, the grooves 601 can distribute the body weight to multiple areas, reducing local pressure concentration and further enhancing the comfort of use while improving heat dissipation.

[0036] In this embodiment, the front sides of the lumbar support a2, lumbar support b5 and the cushion body 1 are all provided with a plurality of fastening holes 8. The front side of the cushion body 1 is provided with a plurality of pressing buckles 9. The pressing buckles 9 are fixedly connected to the lumbar pad 7 and the seat cushion 6. The pressing buckles 9 are fixedly connected to the fastening holes 8 by pressing through. The seat cushion 6 and the plurality of lumbar pads 7 are all fixedly connected to the lumbar support a2, lumbar support b5 and the cushion body 1 by pressing buckles 9.

[0037] When in use, when the pressing buckle 9 is aligned with the buckle hole 8 and pressed, the elastic claw is squeezed and retracts, passing through the buckle hole 8. The claw elastically returns to its original position the instant it passes through, and its end is locked inside the buckle hole 8, so that the lumbar cushion 7, seat cushion 6, lumbar support a2, lumbar support b5 and backrest body 1 form a fixed connection, making the installation of seat cushion 6 and lumbar cushion 7 more convenient, and making it easy to replace seat cushion 6 and lumbar cushion 7 according to different needs and scenarios. When disassembling, pull the lumbar cushion 7 or seat cushion 6 in the opposite direction, and the elastic claw retracts again and disengages from the buckle hole 8, realizing separation. The detachable structure allows seat cushion 6 and lumbar cushion 7 to be removed separately for cleaning, avoiding the tedious cleaning of the entire backrest body 1 and keeping the product hygienic.

[0038] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: When the user sits on the seat frame of the cushion body 1, when the user's waist moves, the pressure difference on both sides causes the lumbar support a2 and lumbar support b5 to move independently. The spring 302 extends and retracts with the pressure, causing the lumbar support to move slightly up, down, left, and right. The rubber tube 303 wraps around the spring 302 and deforms with it, both protecting and buffering vibration, achieving all-round adaptive fit for the waist. At the same time, the user rotates the positioning bolt 4, and the positioning bolt 4 loosens and moves up and down in the four-position adjustment hole 104, so that the elastic bracket 3 moves to the target position. Then, tightening the bolt makes the end fit into the corresponding limiting groove 105, which can fix the height of the lumbar support a2 and lumbar support b5. The four-position adjustment hole 104 provides different height positions to meet the waist support needs of users of different heights. When the lumbar support a2... When the lumbar support b5 exerts a pushing or pulling force on the backrest body 1 during the adaptive lumbar tracking process, the reinforcing rib 102 can resist deformation through its own structural strength, and evenly distribute the force to the entire backrest body 1, avoiding local deformation due to excessive force. When the user moves, the lumbar support 7 and seat cushion 6 will rub against each other and generate a certain amount of heat. The groove 601 and the exhaust hole 101 work together. The slight deformation of the lumbar support 7 and seat cushion 6 will squeeze the air in the exhaust hole 101 and groove 601, accelerate air circulation, further enhance the heat dissipation effect, and prevent heat from accumulating between the seat cushion 6 and the backrest body 1, effectively reducing the stuffiness when sitting for a long time. At the same time, when the user pulls the lumbar support 7 or seat cushion 6 in the opposite direction, the elastic claw retracts and disengages from the buckle hole 8 to separate, making it convenient for the seat cushion 6 and lumbar support 7 to be replaced according to different needs and scenarios.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An automatic lumbar support cushion, comprising a cushion body (1), a lumbar support a (2), and an elastic bracket (3), characterized in that, The backrest a (2) is integrally connected to several positioning frames (201) on the back side. The backrest body (1) has two sets of mounting frames (103) integrally installed on both the front and back sides. The mounting frame (103) has a four-position adjustment hole (104) through the front side. The mounting frame (103) has several limiting grooves (105) on the back side. The limiting grooves (105) are located on the back side of the four-position adjustment hole (104). The elastic bracket (3) includes a support plate (301), a spring (302) and a positioning plate (304). The positioning plate (304) is fixedly connected to the positioning frame (201) by bolts. Several positioning plates (304) are distributed on the support plate (301). 01) At both ends, the spring (302) is fixedly connected to one side of the positioning plate (304) and one end of the support plate (301). One side of the support plate (301) is attached to the front side of the mounting bracket (103). The back side of the mounting bracket (103) is provided with a positioning bolt (4). The positioning bolt (4) passes through the four-position adjustment hole (104) and is threadedly connected to the threaded hole in the middle of one side of the support plate (301). The side of the positioning bolt (4) away from the elastic bracket (3) abuts against the limiting groove (105). The positioning bolt and the elastic bracket (3) are positioned by clamping the mounting bracket (103) on the front and rear sides of the cushion body (1).

2. The automatic lumbar support cushion according to claim 1, characterized in that, The lumbar support is movably connected to the front side of the cushion body (1) via an elastic bracket (3) and a positioning bolt (4). Several rubber tubes (303) are provided between the positioning plate (304) and the bracket. The rubber tubes (303) are sleeved on the outside of the spring (302). The two ends of the rubber tubes (303) are fixedly connected to the positioning plate (304) and the support plate (301) respectively.

3. The automatic lumbar support cushion according to claim 2, characterized in that, The lumbar support a (2) is provided with a lumbar support b (5) on one side. The structure of the lumbar support b (5) is the same as that of the lumbar support a (2). The lumbar support b (5) is installed in the same way as the lumbar support a (2). The lumbar support a (2) and the lumbar support b (5) are symmetrically distributed on the front side of the back cushion of the cushion body (1).

4. The automatic lumbar support cushion according to claim 3, characterized in that, The backrest body (1) has reinforcing ribs (102) integrally connected to both the back and front sides. The reinforcing ribs (102) are located at the bottom of the lumbar support a (2). An exhaust hole (101) is provided through the seat surface of the backrest body (1). A seat cushion (6) is provided outside the exhaust hole (101).

5. The automatic lumbar support cushion according to claim 4, characterized in that, The bottom of the seat cushion (6) is in contact with the top curved surface of the seat surface of the backrest body (1). The top of the seat cushion (6) is provided with several grooves (601). The top of the seat cushion (6) is provided with several lumbar pads (7). The lumbar pads (7) have the same structure as the seat cushion (6). Several of the lumbar pads (7) are located on the side of the lumbar support a (2) and the lumbar support b (5).

6. The automatic lumbar support cushion according to claim 5, characterized in that, The front sides of the lumbar support a (2), lumbar support b (5) and the cushion body (1) are all provided with several buckle holes (8). The front side of the cushion body (1) is provided with several press buckles (9). Several press buckles (9) are fixedly connected to the lumbar pad (7) and the seat cushion (6). The press buckles (9) are fixedly connected to the buckle holes (8) by pressing. The seat cushion (6) and several lumbar pads (7) are all fixedly connected to the lumbar support a (2), lumbar support b (5) and the cushion body (1) by press buckles (9).

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