Adjustable waist support cushion

Abstract

The adjustable waist support cushion comprises a supporting plate, an elastic member, a sliding plate, a waist support plate, a handle screw and an internally threaded sleeve. The waist support plate is connected to the sliding plate through the elastic member. The sliding plate is provided with a receiving groove. The internally threaded sleeve is accommodated in the receiving groove. The side of the supporting plate away from the waist support plate is provided with a wave-shaped clamping groove. The groove bottom wall of the wave-shaped clamping groove is provided with a strip-shaped through hole. The handle screw comprises a handle portion, a screw rod portion and a clamping portion located at the joint of the handle portion and the screw rod portion. The screw rod portion passes through the strip-shaped through hole and is threadedly connected to the internally threaded sleeve. The wave-shaped clamping groove is provided with a plurality of vertically arranged and through bracket-shaped grooves or circular grooves. The diameter of the clamping portion is greater than the aperture width of the strip-shaped through hole, so that the clamping portion can be clamped into the wave-shaped clamping groove. When the clamping portion is separated from the wave-shaped clamping groove, the screw rod portion can slide in the aperture of the strip-shaped through hole to drive the clamping portion to slide to select a circular groove with different height, so as to adjust the height of the waist support plate connected to the sliding plate. The cushion has the characteristics of convenient disassembly and assembly and flexible adjustment.

Description

Technical Field

[0001] This utility model relates to the field of lumbar support cushion technology, specifically to an adjustable lumbar support cushion. Background Technology

[0002] In existing technologies, traditional lumbar support cushions generally suffer from inconvenient disassembly and assembly, and inflexible adjustment. Traditional lumbar support cushions usually have multiple holes in the support plate, and fasteners such as screws are used to connect the lumbar support plate and the support plate through the holes. This means that when adjusting the position of the lumbar support plate, the fasteners must be completely removed and reinstalled into another hole, which is cumbersome and inconvenient to disassemble and assemble. In addition, the adjustment range is limited and does not support stepless adjustment. Therefore, there is an urgent need for an adjustable lumbar support cushion to solve the above problems. Utility Model Content

[0003] In view of this, an adjustable lumbar support cushion that is easy to assemble and disassemble and can be flexibly adjusted is provided.

[0004] An adjustable lumbar support cushion includes a support plate, an elastic element, a sliding plate, a lumbar support plate, a handle screw, and an internal threaded sleeve. The lumbar support plate is connected to the sliding plate via the elastic element. The sliding plate has a receiving groove in the middle of the side facing the handle screw, and the internal threaded sleeve is accommodated in the receiving groove. The support plate has a wavy groove on the side away from the lumbar support plate, and the bottom wall of the wavy groove has a strip-shaped through hole. The handle screw includes a handle part, a screw part, and a locking part located at the junction of the handle part and the screw part. The screw part passes through the strip-shaped through hole and... When the screw part slides, the sliding plate connected to the internal thread sleeve slides synchronously. The wavy groove has multiple vertically arranged and vertically penetrating bracket grooves or circular grooves. The diameter of the snap-fit ​​part is larger than the width of the slotted through hole and smaller than the diameter of the circular groove so that the snap-fit ​​part can be snapped into the wavy groove. When the snap-fit ​​part disengages from the wavy groove, the screw part can slide in the slotted through hole and drive the snap-fit ​​part to slide synchronously to select the circular groove of different heights, thereby adjusting the height position of the waist guard connected to the sliding plate.

[0005] Furthermore, the multiple circular grooves have the same diameter and are evenly distributed, and the diameter of the internal threaded sleeve is larger than the width of the slotted through hole to prevent the handle screw from coming out of the slotted through hole.

[0006] Furthermore, there are multiple wavy grooves, which are distributed in the middle or on the left and right sides of the support plate, and each wavy groove is arranged vertically, horizontally or diagonally.

[0007] Furthermore, the adjustable lumbar support cushion also includes a guide groove and a guide member. The support plate has the guide groove on the side facing the lumbar support plate. The guide groove is slidably connected to the guide member. The guide member is installed in the guide groove and can slide along the length of the guide groove. The guide member is detachably connected to the inner side of the slide plate facing the support plate by fasteners. The guide member has a through hole in the middle, and the internal threaded sleeve passes through the through hole.

[0008] Furthermore, the length direction of the guide groove is consistent with the length direction of the strip-shaped through hole, and the length of the guide groove is greater than the length of the strip-shaped through hole.

[0009] Furthermore, the support plate is provided with a protrusion and a hollowed-out portion on the side facing the guide member. The hollowed-out portion is used to expose the two ends of the guide member and reduce weight, while the protrusion is used to reduce the contact area between the guide member and the support plate, thereby reducing friction between the guide member and the support plate and facilitating sliding.

[0010] Furthermore, both the skateboard and the lumbar support plate are arc-shaped structures, with the concave arc surface of the skateboard facing the lumbar support plate and the convex arc surface of the skateboard facing the support plate. The concave arc surface of the skateboard is parallel to the inner curved surface of the lumbar support plate.

[0011] Furthermore, the width of the slotted through hole is greater than the diameter of the screw portion so that the screw portion can move freely within the slotted through hole, and the length of the snap-fit ​​portion is greater than the groove depth of the wavy groove so that there is a gap between the handle portion and the support plate to facilitate the twisting of the handle portion.

[0012] Furthermore, the elastic element is a double-spring structure, comprising a spring sheet and a base plate. The two ends of the spring sheet and the base plate are connected by double springs. The middle part of the base plate is connected to the sliding plate. The spring sheet is connected to the lumbar support plate. The adjustable lumbar support cushion also includes multiple cushioning elements. The cushioning elements are cylindrical. One end of the cushioning element is fixedly connected to the end of the base plate. Each of the double springs passes through the corresponding cushioning element and extends out of the other end of the cushioning element so that there is a movable gap between the spring sheet and the cushioning element.

[0013] Furthermore, the lumbar support plate is provided with multiple ventilation holes.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: This adjustable lumbar support cushion uses a wave-shaped groove to limit the handle screw, combined with a strip-shaped through-hole design. Simply loosen the handle screw until the locking part disengages from the wave-shaped groove, and the screw can move within the strip-shaped through-hole to adjust the position of the lumbar support. There's no need to completely remove the handle screw, making disassembly and assembly convenient. Furthermore, the screw can move freely within the strip-shaped through-hole, offering more flexible adjustment compared to traditional cushions with limited adjustment options. Users can freely adjust the position of the lumbar support according to their needs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an adjustable lumbar support cushion according to Embodiment 1 of this utility model.

[0016] Figure 2 This is a three-dimensional structural diagram of an adjustable lumbar support cushion from another angle, representing one embodiment of this utility model.

[0017] Figure 3 This is an exploded view of the structure of an adjustable lumbar support cushion according to Embodiment 1 of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of an adjustable lumbar support cushion according to Embodiment 2 of this utility model.

[0019] In the picture, 1. Support plate; 2. Elastic element; 3. Slide plate; 4. Waist support plate; 5. Handle screw; 6. Internal threaded sleeve; 7. Wavy groove; 8. Strip-shaped through hole; 9. Handle part; 10. Screw part; 11. Snap-fit ​​part; 12. Guide groove; 13. Guide element; 14. Through hole; 15. Protrusion; 16. Hollow part; 17. Spring piece; 18. Base plate; 19. Buffer element; 20. Double spring; 21. Vent hole; 22. Receiving groove. Detailed Implementation

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

[0021] Please see Figures 1 to 4This illustration shows an adjustable lumbar support cushion provided by an embodiment of the present invention, including a support plate 1, an elastic element 2, a sliding plate 3, a lumbar support plate 4, a handle screw 5, and an internal threaded sleeve 6. The lumbar support plate 4 is connected to the sliding plate 3 through the elastic element 2. The sliding plate 3 has a receiving groove 22 in the middle of the side facing the handle screw 5, and the internal threaded sleeve 6 is accommodated in the receiving groove 22. The support plate 1 has a wavy groove 7 on the side away from the lumbar support plate 4, and the bottom wall of the wavy groove 7 has a strip-shaped through hole 8. The handle screw 5 includes a handle part 9, a screw part 10, and a locking part 11 located at the junction of the handle part 9 and the screw part 10. When the screw part 10 passes through the strip-shaped through hole 8 and is threadedly connected to the internal threaded sleeve 6, the slide plate 3 connected to the internal threaded sleeve 6 slides synchronously. The wavy groove 7 has multiple vertically arranged and vertically connected bracket grooves or circular grooves. The diameter of the snap-fit ​​part 11 is larger than the width of the gap of the strip-shaped through hole 8 and smaller than the diameter of the circular groove so that the snap-fit ​​part 11 can be snapped into the wavy groove 7. When the snap-fit ​​part 11 disengages from the wavy groove 7, the screw part 10 can slide in the gap of the strip-shaped through hole 8 and drive the snap-fit ​​part 11 to slide synchronously to select the circular grooves of different heights, thereby adjusting the height position of the waist guard 4 connected to the slide plate 3. More specifically, the internal threaded sleeve 6 is equivalent to a nut, and the receiving groove 22 is equivalent to a nut seat. The user rotates the handle part 9 to make the screw part 10 part unscrew the internal threaded sleeve 6, which drives the locking part 11 to disengage from the currently locked circular groove. Then, the user slides up and down to select a suitable height position of the circular groove, and then rotates the handle part 9 in the opposite direction to make the locking part 11 enter the circular groove for locking.

[0022] Specifically, the multiple circular grooves have the same diameter and are evenly distributed, and the diameter of the internal threaded sleeve 6 is larger than the width of the slotted through hole 8 to prevent the handle screw 5 from coming out of the slotted through hole 8.

[0023] Specifically, there are multiple wavy grooves 7, which are distributed in the middle or on the left and right sides of the support plate 1. Each wavy groove 7 is arranged vertically, horizontally or diagonally. More specifically, the preferred embodiment is that the wavy grooves 7 are arranged vertically. The vertical arrangement is used to adjust the height of the lumbar support plate 4 connected to the slide plate 3. The wavy grooves 7 can also be multiple horizontally arranged and horizontally connected bracket grooves or circular grooves, which are used to adjust the position of the lumbar support plate 4 connected to the slide plate 3 to adapt to different body types. For example, the two lumbar support plates 4 can be made to be horizontally separated to support a wide and fat body type. The diagonal arrangement is similar to the above-mentioned vertical and horizontal arrangements, and will not be described again. The number of wavy grooves 7 is multiple to adapt to the needs of users with different body types and to achieve more precise support adjustment. For example, two wavy grooves 7 are vertically distributed on the upper and lower sides of the middle of the support plate 1, respectively, which can realize the independent adjustment of the upper and lower lumbar support plates 4. When the user is tall, the upper lumbar support plate 4 can be adjusted to move upward to fit the physiological curvature of the lumbar spine more closely, while keeping the position of the lower lumbar support plate 4 unchanged to support the end part of the spine. When the user is short, the upper lumbar support plate 4 can be adjusted to move downward to provide more support for the waist.

[0024] In Example 1, as Figure 2 As shown, with the side of the support plate 1 furthest from the lumbar support plate 4 as the back side, two vertically arranged wavy grooves 7 are provided on the upper and lower sides of the middle of the back side of the support plate 1. Each wavy groove 7 corresponds to a sliding plate 3, and the two ends of each sliding plate 3 are elastically connected to a lumbar support plate 4. More specifically, the two ends of the upper sliding plate 3 are connected to the upper left lumbar support plate and the upper right lumbar support plate, respectively. The bottom plates 18 of the two elastic elements 2 are fixed to the left and right ends of the upper sliding plate 3 by bolts or adhesive, respectively, while the two spring pieces 17 are fixedly connected to the inner sides of the upper left lumbar support plate and the upper right lumbar support plate by bolts or adhesive, respectively. The bottom plate 18 at the left end of the side slide plate 3 corresponds to the spring piece 17 of the upper left lumbar support plate and is connected by a spring. The bottom plate 18 at the right end of the upper side slide plate 3 corresponds to the spring piece 17 of the upper right lumbar support plate and is connected by a spring. The two ends of the lower slide plate 3 are respectively connected to the lower left lumbar support plate and the lower right lumbar support plate. The elastic connection method is the same as that of the upper slide plate 3, and will not be described again. Just rotate the handle part 9 and loosen the handle screw 5 until the locking part 11 is disengaged from the wave-shaped locking groove 7. Then the screw part 10 can move in the strip-shaped through hole 8 to drive the corresponding slide plate 3 to move, thereby driving the two lumbar support plates 4 on the same slide plate 3 to move synchronously.

[0025] In Example 2, as Figure 4As shown, a vertically arranged wave-shaped slot 7 is provided on the left and right sides of the middle part of the support plate 1. The handle screw 5 is directly connected to the bottom plate 18 of the elastic element 2. Each wave-shaped slot 7 corresponds directly to a waist support plate 4. When the handle part 9 is rotated and the handle screw 5 is loosened until the locking part 11 is disengaged from the wave-shaped slot 7, the screw part 10 can move in the strip-shaped through hole 8 to drive a waist support plate 4 to move independently. More specifically, each lumbar support plate 4 is equipped with an elastic element 2. The base plate 18 of the elastic element 2 is directly connected to the screw part 10 of the handle screw 5 through a threaded hole, while the spring piece 17 of the elastic element 2 is fixed to the inner side of the lumbar support plate 4. The base plate 18 and the spring piece 17 are connected by a spring. For example, the left lumbar support plate is connected to the left handle screw 5 through the left elastic element 2, and the same applies to the right side. When the handle part 9 is rotated to disengage the locking part 11 from the wavy locking groove 7, the screw part 10 slides in the strip-shaped through hole 8, directly and synchronously pulling the base plate 18 and the lumbar support plate 4 connected thereto to move. In practical applications, the left lumbar support plate can be moved upward to support the left side of the lumbar spine, while the right side remains in place to solve the problem of unilateral fatigue caused by scoliosis or driving posture.

[0026] Specifically, the adjustable lumbar support cushion further includes a guide groove 12 and a guide member 13. The guide groove 12 is provided on the side of the support plate 1 facing the lumbar support plate 4. The guide groove 12 is slidably connected to the guide member 13. The guide member 13 is installed in the guide groove 12 and can slide along the length of the guide groove 12. The guide member 13 is detachably connected to the inner side of the slide plate 3 facing the support plate 1 by fasteners. The guide member 13 has a through hole 14 in the middle, and the internal threaded sleeve 6 passes through the through hole 14. More specifically, the guide member 13 is used to allow the lumbar support plate 4, which is elastically connected to the slide plate 3, to move along the length of the guide groove 12 without deflection.

[0027] More specifically, the length direction of the guide groove 12 is consistent with the length direction of the strip-shaped through hole 8, and the length of the guide groove 12 is greater than the length of the strip-shaped through hole 8 to meet the adjustment stroke requirements of the waist support plate 4. The guide groove 12 is used to ensure that the waist support plate 4 moves smoothly along the preset vertical trajectory and avoids the waist support plate 4 from deflecting.

[0028] More specifically, the support plate 1 is provided with a protrusion 15 and a hollow part 16 on the side facing the guide member 13. The hollow part 16 is used to expose the two ends of the guide member 13 so that when the user adjusts the height of the lumbar support plate 4, he can intuitively judge the movement status of the slide plate 3 and the lumbar support plate 4 by observing the end position of the guide member 13. At the same time, the hollow part 16 can also reduce the overall weight of the support plate 1. The protrusion 15 is used to reduce the contact area between the guide member 13 and the support plate 1 so as to reduce the friction between the guide member 13 and the support plate 1 and facilitate sliding.

[0029] Specifically, both the skateboard 3 and the lumbar support plate 4 are arc-shaped structures. The radius of curvature of the lumbar support plate 4 is adapted to the curvature of the human lumbar spine. The concave arc surface of the skateboard 3 faces the lumbar support plate 4, and the convex arc surface of the skateboard 3 faces the support plate 1. The concave arc surface of the skateboard 3 is parallel to the inner curved surface of the lumbar support plate 4. The arc-shaped structure allows the lumbar support plate 4 to more precisely conform to the waist curve.

[0030] Specifically, the width of the strip-shaped through hole 8 is greater than the diameter of the screw part 10 so that the screw part 10 can move freely within the strip-shaped through hole 8, and the length of the snap-fit ​​part 11 is greater than the groove depth of the wavy snap-fit ​​groove 7 so that there is a gap between the handle part 9 and the support plate 1 to facilitate the twisting of the handle part 9.

[0031] Specifically, the elastic element 2 is a double-spring structure, comprising a spring sheet 17 and a base plate 18. The two ends of the spring sheet 17 and the base plate 18 are connected by double springs 20. The middle part of the base plate 18 is connected to the slide plate 3, and the spring sheet 17 is connected to the lumbar support plate 4. More specifically, one end of the double spring 20 is integrated with the spring sheet 17 by means of bonding or fastening, and the other end is integrated with the base plate 18 by means of bonding or fastening. Therefore, the slide plate 3 connected to the base plate 18 is connected to the spring sheet 17 by the double spring 20. The adjustable lumbar support cushion also includes multiple cushioning elements 19, which are preferably cylindrical. One end of the cushioning element 19 is fixedly connected to the end of the base plate 18. Each spring of the double spring 20 passes through the corresponding cushioning element 19 and extends out of the other end of the cushioning element 19 so that there is a movable gap between the spring piece 17 and the cushioning element 19. More specifically, the movable gap allows the spring piece 17 to move slightly when subjected to force, so that the lumbar support plate 4 is closer to the curve of the human waist, while avoiding excessive twisting and deformation of the spring piece 17 when subjected to force. The cushioning element 19 is preferably made of silicone shock-absorbing material.

[0032] Specifically, the lumbar support plate 4 is provided with multiple ventilation holes 21.

[0033] In summary, this adjustable lumbar support cushion uses a wave-shaped groove 7 to limit the handle screw 5, combined with a strip-shaped through hole 8 design. Only by loosening the handle screw 5 until the locking part 11 disengages from the wave-shaped groove 7, the screw part 10 can move within the strip-shaped through hole 8 to adjust the position of the lumbar support plate 4. There is no need to completely remove the handle screw 5, making disassembly and assembly convenient. Moreover, the screw part 10 can move freely within the strip-shaped through hole 8, which is more flexible in adjustment compared to the traditional limited gear selection. Furthermore, each wave-shaped groove 7 can be arranged vertically, horizontally, or diagonally, allowing the lumbar support plate 4 to be infinitely adjustable in multiple directions. Users can freely adjust the position of the lumbar support plate 4 according to their needs, significantly improving the convenience and flexibility of adjustment.

[0034] It should be noted that this utility model is not limited to the above-described embodiments. Based on the inventive spirit of this utility model, those skilled in the art can make other changes, and these changes made based on the inventive spirit of this utility model should be included within the scope of protection claimed by this utility model.

Claims

1. An adjustable lumbar support cushion, characterized in that, The system includes a support plate, an elastic element, a sliding plate, a lumbar support plate, a handle screw, and an internal threaded sleeve. The lumbar support plate is connected to the sliding plate via the elastic element. The sliding plate has a receiving groove in the middle of the side facing the handle screw, and the internal threaded sleeve is accommodated in the receiving groove. The support plate has a wavy groove on the side away from the lumbar support plate, and the bottom wall of the wavy groove has a strip-shaped through hole. The handle screw includes a handle part, a screw part, and a snap-fit ​​part located at the junction of the handle part and the screw part. The screw part passes through the strip-shaped through hole and engages with the internal threaded sleeve. When the threaded connection allows the screw to slide, the slide plate connected to the internal threaded sleeve slides synchronously. The wavy groove consists of multiple vertically arranged and vertically penetrating bracket grooves or circular grooves. The diameter of the engaging part is larger than the width of the slotted through hole and smaller than the diameter of the circular groove so that the engaging part can be engaged in the wavy groove. When the engaging part disengages from the wavy groove, the screw can slide in the slotted through hole, causing the engaging part to slide synchronously to select circular grooves of different heights, thereby adjusting the height position of the waist guard connected to the slide plate.

2. An adjustable lumbar support cushion as described in claim 1, characterized in that, The multiple circular grooves have the same diameter and are evenly distributed. The diameter of the internal threaded sleeve is larger than the width of the slotted through hole to prevent the handle screw from coming out of the slotted through hole.

3. An adjustable lumbar support cushion as described in claim 1, characterized in that, The number of the wave-shaped slots is multiple, and the multiple wave-shaped slots are distributed in the middle or on the left and right sides of the support plate. Each wave-shaped slot is arranged vertically, horizontally or diagonally.

4. An adjustable lumbar support cushion as described in claim 1, characterized in that, The adjustable lumbar support cushion also includes a guide groove and a guide member. The support plate has the guide groove on the side facing the lumbar support plate. The guide groove is slidably connected to the guide member. The guide member is installed in the guide groove and can slide along the length of the guide groove. The guide member is detachably connected to the inner side of the slide plate facing the support plate by fasteners. The guide member has a through hole in the middle, and the internal threaded sleeve passes through the through hole.

5. An adjustable lumbar support cushion as described in claim 4, characterized in that, The length direction of the guide groove is consistent with the length direction of the strip-shaped through hole, and the length of the guide groove is greater than the length of the strip-shaped through hole.

6. An adjustable lumbar support cushion as described in claim 4, characterized in that, The support plate is also provided with a protrusion and a hollow part on the side facing the guide member. The hollow part is used to expose the two ends of the guide member and reduce weight. The protrusion is used to reduce the contact area between the guide member and the support plate so as to reduce the friction between the guide member and the support plate and facilitate sliding.

7. An adjustable lumbar support cushion as described in claim 1, characterized in that, Both the skateboard and the lumbar support plate are arc-shaped structures. The concave surface of the skateboard faces the lumbar support plate, and the convex surface of the skateboard faces the support plate. The concave surface of the skateboard is parallel to the inner curved surface of the lumbar support plate.

8. An adjustable lumbar support cushion as described in claim 1, characterized in that, The width of the slotted through hole is greater than the diameter of the screw part so that the screw part can move freely within the slotted through hole. The length of the snap-fit ​​part is greater than the depth of the wavy groove so that there is a gap between the handle part and the support plate to facilitate the twisting of the handle part.

9. An adjustable lumbar support cushion as described in claim 1, characterized in that, The elastic element is a double-spring structure, comprising a spring sheet and a base plate. The two ends of the spring sheet and the base plate are connected by double springs. The middle part of the base plate is connected to the sliding plate. The spring sheet is connected to the lumbar support plate. The adjustable lumbar support cushion also includes multiple cushioning elements. The cushioning elements are cylindrical. One end of the cushioning element is fixedly connected to the end of the base plate. Each of the double springs passes through the corresponding cushioning element and extends out of the other end of the cushioning element so that there is a movable gap between the spring sheet and the cushioning element.

10. An adjustable lumbar support cushion as described in claim 1, characterized in that, The lumbar support plate has multiple ventilation holes.

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