A highly adjustable lumbar support

Abstract

This utility model discloses a height-adjustable lumbar support, relating to the field of lumbar support technology, including a cushion, a lumbar pillow, and a connecting component. The connecting component connects the cushion and the lumbar pillow and includes: a sliding structure that allows the lumbar pillow to slide relative to the cushion in the vertical direction to adjust its support height; and an elastic locking structure that, when the lumbar pillow is subjected to external force, triggers and locks the lumbar pillow to the cushion; when no external force is applied to the lumbar pillow, the elastic locking structure releases the lock, allowing the lumbar pillow to return to its vertically adjustable sliding state. The sliding structure enables the lumbar pillow to slide vertically relative to the cushion, and the toothed locking mechanism of the elastic locking structure facilitates height adjustment at any time, meeting the lumbar support needs of different users or sitting postures, and is simple and efficient to operate.

Description

Technical Field

[0001] This utility model relates to the field of lumbar support technology, specifically a lumbar support with freely adjustable height. Background Technology

[0002] In modern life, people spend long periods of time sitting, whether working, studying, or relaxing. However, prolonged poor posture can easily lead to lower back fatigue, pain, and even injury. Ergonomic research shows that proper support is needed to maintain the natural curve of the lumbar spine in order to keep the lower back healthy and comfortable.

[0003] Lumbar supports are now widely used as everyday consumer goods, especially in car seats, office chairs, and sofas. When we sit down to rest or work, our lower backs are under stress for a long time due to maintaining a sitting posture. Lumbar supports can provide support for the lower back and reduce fatigue.

[0004] However, traditional lumbar supports are usually of a fixed shape and size, and cannot be flexibly adjusted to suit different body types and sitting habits. This results in some users not getting the desired lumbar support, and may even worsen lower back discomfort due to inappropriate support.

[0005] Therefore, it is necessary to propose an improved technical solution to address the above problems. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] A height-adjustable lumbar support, including a cushion, a lumbar pillow, and connecting components;

[0008] The connecting component is used to connect the back cushion and the lumbar pillow, and includes:

[0009] The sliding structure allows the lumbar pillow to slide relative to the backrest in the vertical direction to adjust the support height of the lumbar pillow;

[0010] The elastic locking structure is triggered and locks the lumbar pillow to the backrest when an external force is applied to it; when no external force is applied to the lumbar pillow, the elastic locking structure is released, allowing the lumbar pillow to return to its vertically adjustable sliding state.

[0011] As a further embodiment of this utility model: the elastic locking structure includes a first elastic element, a locking tooth group, and a locking structure body;

[0012] The first elastic element is disposed between the sliding structure and the locking structure body;

[0013] One end of the locking structure body is elastically connected to the sliding structure via the first elastic element, and the other end is connected to the lumbar pillow;

[0014] The locking tooth assembly includes a first tooth portion disposed on the cushion and a second tooth portion disposed on the locking structure body. The tooth surfaces of the first tooth portion and the second tooth portion are disposed opposite to each other, and there is a gap between the first tooth portion and the second tooth portion under the action of the elastic force of the first elastic element itself.

[0015] As a further embodiment of this utility model: the sliding structure includes a slider and a slide rail disposed vertically on the cushion, wherein the slider can be slidably fitted into the slide rail;

[0016] The slider is connected to the end of the first elastic element away from the locking structure body.

[0017] As a further embodiment of this utility model: the first tooth is arranged along the length direction of the slide and is located on both sides of the slide;

[0018] The tooth surface of the first tooth faces the locking structure body, and the tooth surface of the second tooth is adapted to the tooth surface of the first tooth.

[0019] As a further embodiment of this utility model: the locking structure body includes a first connecting member and a second connecting member connected to each other;

[0020] The first connector is connected to the lumbar pillow, and the second connector is movably and telescopically connected to the slider through the first elastic element. The second connector is provided with the second tooth on one side facing the slider.

[0021] A limit structure is provided between the second connector and the slider to prevent detachment.

[0022] As a further embodiment of the present invention: the first connector includes a first connecting end and a second connecting end;

[0023] The first connecting end is rotatably connected to the lumbar pillow, the second connecting end is connected to the second connecting member, and a second elastic element is provided between the second connecting end and the second connecting member.

[0024] As a further embodiment of the present invention: the cushion is provided with an installation groove corresponding to its slide position, and the installation groove is provided with a first installation component and a second installation component that are interlocked together;

[0025] The first mounting component and the second mounting component each have a through space on their inner sides. When the two through spaces are joined together, they form a slide for the slider to slide.

[0026] As a further embodiment of this utility model: the side of the first mounting member away from the second mounting member is provided with a first tooth extending in the vertical direction;

[0027] The second mounting component has a plurality of positioning slots arranged vertically on the side facing the first mounting component, and the slider has an elastic ball retaining assembly corresponding to the position of the positioning slot;

[0028] The elastic retaining bead assembly includes a retaining bead and a third elastic element, wherein the third elastic element is used to push the retaining bead toward the positioning slot and form an elastic snap-fit ​​engagement.

[0029] As a further embodiment of this utility model: the positioning slots and the tooth grooves of the first tooth are in a one-to-one correspondence in the vertical direction, and the spacing between the positioning slots is equal to the tooth pitch of the first tooth.

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0031] 1) The lumbar pillow slides vertically relative to the backrest through a sliding structure. Combined with the toothed locking mechanism of the elastic locking structure, when the human body leans against the lumbar pillow, external force triggers the locking to ensure stable support position; when there is no external force, it automatically unlocks, making it easy to adjust the height at any time to meet the lumbar support needs of different users or sitting postures. The operation is simple and efficient.

[0032] 2) The lumbar pillow is rotatably connected to the first and second connectors. With the cushioning effect of the second elastic element, it can automatically adapt to the lumbar curve with slight swaying or posture adjustment of the human waist, ensuring the fit between the waist and the lumbar pillow under different sitting postures. At the same time, the first elastic element provides elastic support for the lumbar pillow. When the human body leans against it, its deformation can be adjusted accordingly. Through elastic feedback, the support force can be adaptively adjusted to avoid the pressure caused by rigid support and improve the comfort of long-term use.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of this utility model;

[0036] Figure 2 This is a schematic diagram of the structure of the present invention with the lumbar support removed;

[0037] Figure 3 This is a schematic diagram of the structure for removing the cushion in this utility model;

[0038] Figure 4 This is an exploded structural diagram of the present invention.

[0039] The reference numerals and names in the figure are as follows:

[0040] 1. Backrest cushion; 2. Lumbar pillow; 3. First elastic element; 4. First tooth; 5. Second tooth; 6. Slider; 7. Slide rail; 8. Locking structure body; 9. First connector; 10. Second connector; 11. First connecting end; 12. Second connecting end; 13. Second elastic element; 14. Mounting groove; 15. First mounting piece; 16. Second mounting piece; 17. Positioning slot; 18. Locking bead; 19. Third elastic element. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Please see Figure 1-4 In this embodiment of the utility model, a height-adjustable lumbar support mainly consists of a cushion 1, a lumbar pillow 2, and a connecting component. The connecting component is used to connect the cushion 1 and the lumbar pillow 2, and can drive the lumbar pillow 2 to slide relative to the cushion 1 in the vertical direction to adjust the height. It also has locking and unlocking functions.

[0043] The connecting assembly includes a sliding structure and an elastic locking structure. The sliding structure includes a slider 6 and a slide rail 7 vertically positioned on the cushion 1. The slider 6 is slidably fitted into the slide rail 7, allowing for stable sliding along its length. The cushion 1 has a mounting groove 14 corresponding to the slide rail 7. A first mounting member 15 and a second mounting member 16, positioned opposite each other, are installed within the mounting groove 14 and are fixed together by interlocking. Both the first mounting member 15 and the second mounting member 16 have through spaces on their respective inner sides. When these two through spaces are joined together, they form the slide rail 7 for the slider 6 to slide on. This structure facilitates the processing and assembly of the slide rail 7.

[0044] The elastic locking structure consists of an elastic element, a locking tooth assembly, and a locking structure body 8. Specifically, the elastic element is a first elastic element 3, which is disposed between the slider 6 of the sliding structure and the locking structure body 8. The first elastic element 3 can be a spring. One end of the locking structure body 8 is elastically connected to the slider 6 via the first elastic element 3, and the other end is connected to the lumbar pillow 2. The locking tooth assembly includes a first tooth 4 and a second tooth 5. The first tooth 4 is disposed on the cushion 1, distributed along the length of the slide 7, and located on both sides of the slide 7, with its tooth surface facing the locking structure body 8. The second tooth 5 is disposed on the locking structure body 8, and its tooth surface is adapted to the tooth surface of the first tooth 4. Under the action of the elastic force of the first elastic element 3, a certain distance can be maintained between the first tooth 4 and the second tooth 5. At this time, the elastic locking structure is in the unlocked state. There can also be slight contact between the first tooth 4 and the second tooth 5. That is, the tooth tip of the second tooth 5 has a small amount of contact with the tooth tip or tooth surface of the first tooth 4 but does not form a meshing lock. This slight contact can provide a certain friction force for the lumbar pillow 2 when it is not locked, which helps to maintain the adjusted position.

[0045] This can be simplified to:

[0046] When the lumbar pillow 2 is subjected to external force, the elastic locking structure is triggered and locks the lumbar pillow 2 to the backrest 1, wherein:

[0047] When the pressure generated by the human body leaning against the lumbar pillow 2 is transmitted to the elastic locking structure through the lumbar pillow 2, the elastic locking structure locks the lumbar pillow 2 to the backrest 1;

[0048] When no external force is applied to the lumbar pillow 2, the elastic locking structure is released, allowing the lumbar pillow 2 to return to its vertically adjustable sliding state.

[0049] When the pressure of the human body leaning against it disappears, the elastic locking structure is released under its own elastic restoring force, so that the lumbar pillow 2 returns to its vertically adjustable sliding state.

[0050] The locking structure body 8 includes a first connecting member 9 and a second connecting member 10 that are interconnected. The first connecting member 9 is connected to the lumbar pillow 2, and the second connecting member 10 is connected to the slider 6 via a first elastic element 3 to form a movable telescopic connection. The second connecting member 10 has the aforementioned second tooth 5 on one side facing the slider 6. To prevent the second connecting member 10 from disengaging from the slider 6 during relative movement, a limiting anti-disengagement structure is provided between the second connecting member 10 and the slider 6. This limiting anti-disengagement structure can limit the relative displacement range between the two and ensure the stability of the connection. For example, the limiting and anti-detachment structure can be a boss on the slider 6 and a groove on the second connector 10. The boss can be slidably embedded in the groove, and the length of the groove is greater than the length of the boss. When the second connector 10 moves relative to the slider 6, the boss slides in the groove. When the boss abuts against the end of the groove, it can limit the relative movement between the two, thereby playing an anti-detachment role. Alternatively, the slider 6 can be provided with a guide rod extending along its length direction, and the second connector 10 can be provided with a guide hole adapted to the guide rod. The guide rod passes through the guide hole, and a limiting cap is provided at the end of the guide rod away from the slider 6. The diameter of the limiting cap is greater than the diameter of the guide hole, thereby preventing the second connector 10 from falling off the guide rod.

[0051] The first connecting member 9 has a first connecting end 11 and a second connecting end 12. The first connecting end 11 is rotatably connected to the lumbar pillow 2. This rotatable connection can be achieved using a hinge connection, where the first connecting end 11 has two opposing flaps, and the lumbar pillow 2 has a corresponding connecting shaft that passes through the shaft holes of the two flaps, allowing the lumbar pillow 2 to rotate around the connecting shaft. Alternatively, a pin connection can be used, where the first connecting end 11 has a bushing, and the lumbar pillow 2 has a through hole corresponding to the bushing. The pin passes through the bushing and the through hole to achieve a rotatable connection. This rotatable connection allows the lumbar pillow 2 to rotate relative to the first connecting member 9, better adapting to the curve of the human waist. The second connecting end 12 is connected to the second connecting member 10, and a second elastic element 13 is provided between the second connecting end 12 and the second connecting member 10. The second elastic element 13 can be a spring, which provides cushioning for the relative movement between the first connecting member 9 and the second connecting member 10, improving comfort during use.

[0052] Understandably, the second connector 10 and the first connector 9 may also be provided with a limiting and anti-detachment structure as described above, so that the first connector 9, the second connector 10, and the lumbar support can form a whole when adjusted up and down, and the stability of the lumbar support during use.

[0053] Furthermore, a first tooth 4 extending vertically is provided on the side of the first mounting member 15 away from the second mounting member 16, and a plurality of positioning slots 17 arranged vertically are provided on the side of the second mounting member 16 facing the first mounting member 15. An elastic ball 18 assembly is installed on the slider 6 corresponding to the position of the positioning slot 17. This elastic ball 18 assembly includes a ball 18 and a third elastic element 19, which can be a spring. The third elastic element 19 pushes the ball 18 towards the positioning slot 17, forming an elastic locking engagement. The positioning slots 17 correspond one-to-one with the teeth of the first tooth 4 in the vertical direction, and the spacing of the positioning slots 17 is equal to the tooth pitch of the first tooth 4. When the slider 6 slides along the slide rail 7, the engagement of the elastic ball 18 assembly with the positioning slot 17 provides a certain positioning and guiding function. Simultaneously, the engagement and locking of the first tooth 4 and the second tooth 5 further enhances the stability of the lumbar pillow 2 after height adjustment.

[0054] Without locking, the lumbar support can maintain its adjusted position in several ways. Besides the engagement of the elastic bead 18 assembly with the positioning slot 17, a friction plate made of rubber can be placed between the slider 6 and the slide rail 7. The friction between the slider 6 and the slide rail 7 restricts the sliding of the slider 6, thus maintaining the position of the lumbar support 2. Alternatively, multiple protrusions distributed vertically can be provided on the inner side of the slide rail 7, with corresponding elastic plates on the slider 6. The friction generated by the contact between the elastic plates and the protrusions prevents the slider 6 from sliding freely. Furthermore, as mentioned earlier, there can be slight contact between the first tooth 4 and the second tooth 5, for example, the tip of the second tooth 5 contacts the tooth surface of the first tooth 4. The friction between them also helps maintain the lumbar support 2 in its adjusted position, preventing it from easily sliding without external force.

[0055] When the height of the lumbar pillow 2 needs to be adjusted, since the lumbar pillow 2 is not subjected to external force at this time, under the elastic force of the first elastic element 3, the second tooth 5 is in a separated state or only slightly in contact with the first tooth 4. The user can push the lumbar pillow 2, causing the slider 6 of the connecting component to slide along the slide rail 7, thereby realizing the vertical height adjustment of the lumbar pillow 2. When adjusted to a suitable height, when the user leans against the lumbar pillow 2, the lumbar pillow 2 is subjected to external force. This force is transmitted to the second connecting member 10 through the first connecting member 9, causing the second connecting member 10 to compress the first elastic element 3, so that the second tooth 5 moves closer to the first tooth 4 and finally engages, realizing the locking of the lumbar pillow 2 and the backrest 1, ensuring that the lumbar pillow 2 provides stable support for the human waist at this height position. When the user no longer leans against the lumbar pillow 2, after the external force disappears, the first elastic element 3 returns to its deformation, causing the second tooth 5 to separate from the first tooth 4 or return to a slightly contact state, releasing the lock, and the lumbar pillow 2 can be adjusted in height again.

[0056] In summary, this utility model has the following beneficial effects:

[0057] The lumbar pillow 2 slides vertically relative to the backrest 1 through a sliding structure. Combined with the toothed locking mechanism of the elastic locking structure, when the human body leans against the lumbar pillow 2, external force triggers the locking to ensure stable support position; when there is no external force, it automatically unlocks, making it easy to adjust the height at any time to meet the lumbar support needs of different users or sitting postures. The operation is simple and efficient.

[0058] The lumbar pillow 2 is rotatably connected to the first connector 9 and the second connector 10. With the cushioning effect of the second elastic element 13, it can automatically adapt to the lumbar curve with the slight swaying or posture adjustment of the human waist, ensuring the fit between the waist and the lumbar pillow 2 under different sitting postures. At the same time, the first elastic element 3 provides elastic support for the lumbar pillow 2. When the human body leans against it with different force, its deformation can be adjusted accordingly. Through elastic feedback, the support force can be adaptively adjusted, avoiding the pressure caused by rigid support and improving the comfort of long-term use.

[0059] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A height-adjustable lumbar support, characterized in that, Includes back cushions, lumbar support pillows, and connecting components; The connecting component is used to connect the back cushion and the lumbar pillow, and includes: The sliding structure allows the lumbar pillow to slide relative to the backrest in the vertical direction to adjust the support height of the lumbar pillow; The elastic locking structure is triggered and locks the lumbar pillow to the backrest when an external force is applied to it; when no external force is applied to the lumbar pillow, the elastic locking structure is released, allowing the lumbar pillow to return to its vertically adjustable sliding state.

2. A height-adjustable lumbar support according to claim 1, characterized in that, The elastic locking structure includes a first elastic element, a locking tooth group, and a locking structure body; The first elastic element is disposed between the sliding structure and the locking structure body; One end of the locking structure body is elastically connected to the sliding structure via the first elastic element, and the other end is connected to the lumbar pillow; The locking tooth assembly includes a first tooth portion disposed on the cushion and a second tooth portion disposed on the locking structure body. The tooth surfaces of the first tooth portion and the second tooth portion are disposed opposite to each other, and there is a gap between the first tooth portion and the second tooth portion under the action of the elastic force of the first elastic element itself.

3. A height-adjustable lumbar support according to claim 2, characterized in that, The sliding structure includes a slider and a slide rail disposed vertically on the cushion, wherein the slider can be slidably fitted into the slide rail; The slider is connected to the end of the first elastic element away from the locking structure body.

4. A height-adjustable lumbar support according to claim 3, characterized in that, The first tooth is arranged along the length of the slide and is located on both sides of the slide; The tooth surface of the first tooth faces the locking structure body, and the tooth surface of the second tooth is adapted to the tooth surface of the first tooth.

5. A height-adjustable lumbar support according to claim 4, characterized in that, The locking structure body includes a first connector and a second connector that are connected to each other; The first connector is connected to the lumbar pillow, and the second connector is movably and telescopically connected to the slider through the first elastic element. The second connector is provided with the second tooth on one side facing the slider. A limit structure is provided between the second connector and the slider to prevent detachment.

6. A height-adjustable lumbar support according to claim 5, characterized in that, The first connector includes a first connecting end and a second connecting end; The first connecting end is rotatably connected to the lumbar pillow, the second connecting end is connected to the second connecting member, and a second elastic element is provided between the second connecting end and the second connecting member.

7. A height-adjustable lumbar support according to any one of claims 3-6, characterized in that, The cushion is provided with a mounting groove corresponding to its slide position, and the mounting groove is provided with a first mounting component and a second mounting component that are interlocked. The first mounting component and the second mounting component each have a through space on their inner sides. When the two through spaces are joined together, they form a slide for the slider to slide.

8. A height-adjustable lumbar support according to claim 7, characterized in that, The first mounting member has a first tooth extending in a vertical direction on its side away from the second mounting member; The second mounting component has a plurality of positioning slots arranged vertically on the side facing the first mounting component, and the slider has an elastic ball retaining assembly corresponding to the position of the positioning slot; The elastic retaining bead assembly includes a retaining bead and a third elastic element, wherein the third elastic element is used to push the retaining bead toward the positioning slot and form an elastic snap-fit ​​engagement.

9. A height-adjustable lumbar support according to claim 8, characterized in that, The positioning slots and the tooth slots of the first tooth are in a one-to-one correspondence in the vertical direction, and the spacing between the positioning slots is equal to the tooth pitch of the first tooth.

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