Headrest structure and sofa

Abstract

The utility model discloses a headrest structure and sofa, headrest structure includes support seat, first headrest subassembly and two second headrest subassembly, and first headrest subassembly is connected with support seat through first adjusting component, and first adjusting component can drive first headrest subassembly to rotate to adjust the included angle between first headrest subassembly and support seat, two second headrest subassembly symmetrical setting are in the opposite sides of first headrest subassembly, and every second headrest subassembly is connected with first headrest subassembly through second adjusting component, and second adjusting component can drive second headrest subassembly to rotate to adjust the included angle between second headrest subassembly and first headrest subassembly, the utility model discloses can match the neck physiological curvature of different users and the support demand under different use scene, avoid neck muscle because of continuously being in unnatural force state and produce acid and distend, stiff and other fatigue feeling, reduce the occurrence of health problem such as cervical spondylosis, improve comfort and use convenience.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a headrest structure and a sofa. Background Technology

[0002] Most sofa headrests on the market today use a gear and spring structure, which allows for a rough adjustment of the headrest's forward tilt angle through a limited number of fixed positions. Due to the limited number of positions and the large adjustment range, users find it difficult to accurately find the headrest support angle and position that matches the physiological curvature of their neck in different usage scenarios such as reading, watching TV, and resting. This results in the neck not receiving proper and stable support. Over time, the neck muscles are prone to fatigue such as soreness and stiffness due to continuous unnatural stress, and may even lead to health problems such as cervical strain. This reduces the comfort of the sofa and affects the overall user experience, failing to meet the high-quality demands of modern consumers for personalized and humanized support in home furnishing products. Utility Model Content

[0003] This utility model aims to solve at least one of the aforementioned technical problems existing in the prior art. Therefore, the purpose of this utility model is to provide a headrest structure that can match the physiological curvature of the neck of different users and the support needs under different usage scenarios, avoiding fatigue such as soreness and stiffness in the neck muscles due to continuous unnatural stress, reducing the occurrence of health problems such as cervical strain, and improving comfort and ease of use.

[0004] This utility model also proposes a sofa having the above-mentioned headrest structure.

[0005] The headrest structure according to a first aspect embodiment of the present invention includes: Support base; A first headrest assembly is connected to the support base via a first adjustment assembly. The first adjustment assembly can drive the first headrest assembly to rotate, thereby adjusting the angle between the first headrest assembly and the support base. Two second headrest assemblies are symmetrically arranged on opposite sides of the first headrest assembly. Each second headrest assembly is connected to the first headrest assembly via a second adjustment assembly. The second adjustment assembly can drive the second headrest assembly to rotate, thereby adjusting the angle between the second headrest assembly and the first headrest assembly.

[0006] The headrest structure according to this utility model embodiment has at least the following beneficial effects: the first adjustment component can drive the first headrest component to rotate, thereby adjusting the angle between the first headrest component and the support seat. Simultaneously, the second adjustment component can drive the second headrest component to rotate, thereby adjusting the angle between the second headrest component and the first headrest component. That is, the headrest structure achieves rotational adjustment of the first headrest component relative to the support seat through the first adjustment component, and rotational adjustment of the two second headrest components relative to the first headrest component through the second adjustment component. This allows for flexible adjustment of both the angle between the first headrest component and the support seat, and the angle between the second headrest component and the first headrest component, thus matching the neck curvature of different users and the support needs in different usage scenarios. Furthermore, adjusting the angle of the second headrest component creates a more snug, enveloping feel, ensuring appropriate support for all parts of the neck, preventing fatigue such as soreness and stiffness caused by continuous unnatural stress on neck muscles, reducing the occurrence of health problems such as cervical strain, improving comfort and ease of use, and meeting the high-quality demands of modern consumers for personalized and humanized support in home products.

[0007] According to some embodiments of the present invention, the first adjustment component includes a first limiting rod, a first adjusting rod, a first connecting shaft, and a first limiting member. The first limiting rod is connected to the support base, the first adjusting rod is connected to the first headrest assembly, and the first limiting rod is connected to the first adjusting rod through the first connecting shaft. The first limiting rod is provided with a plurality of first limiting slots arranged in an arc shape, the first adjusting rod is provided with a first hollow area corresponding to the first limiting slot, at least a portion of the first limiting member is provided in the first hollow area, the first adjusting rod can rotate around the first connecting shaft, and the first limiting member engages with the corresponding first limiting slot to limit the first adjusting rod.

[0008] According to some embodiments of the present invention, the first adjustment component further includes a first elastic element, which is disposed in the first hollow area, abuts against the first limiting element, and is used to apply a continuous elastic force to the first limiting element.

[0009] According to some embodiments of the present invention, the second adjustment component includes a second limiting rod, a second adjusting rod, a second connecting shaft, and a second limiting member. The second limiting rod is connected to the first headrest assembly, the second adjusting rod is connected to the second headrest assembly, and the second limiting rod is connected to the second adjusting rod through the second connecting shaft. The second limiting rod is provided with a plurality of second limiting slots arranged in an arc shape, the second adjusting rod is provided with a second hollow area corresponding to the second limiting slot, at least a part of the second limiting member is provided in the second hollow area, the second adjusting rod can rotate around the second connecting shaft, and the second limiting member engages with the corresponding second limiting slot to limit the second adjusting rod.

[0010] According to some embodiments of the present invention, the second adjustment component further includes a second elastic element, which is disposed in the second hollow area, abuts against the second limiting element, and is used to apply a continuous elastic force to the second limiting element.

[0011] According to some embodiments of the present invention, the headrest structure further includes a height adjustment component, which is connected to the support base. The first adjustment component is inserted into the height adjustment component, and the first adjustment component can move along the axial direction of the height adjustment component to adjust the distance between the first headrest component and the support base.

[0012] According to some embodiments of the present invention, the height adjustment component includes a base and a height limiting member connected to the base. The base is connected to the support base and has an opening. The first adjustment component has a plurality of adjustment slots that cooperate with the opening. At least a portion of the height limiting member passes through the opening and engages with the adjustment slots to limit the position of the first adjustment component.

[0013] According to some embodiments of the present invention, the height adjustment assembly further includes a connector, the support base is provided with a mounting groove and a connecting hole, the mounting groove communicates with the connecting hole, the base includes a head and a tail connected to the head, the head is disposed in the mounting groove, and the tail passes through the connecting hole and is connected to the connector.

[0014] According to some embodiments of the present invention, the first headrest assembly is provided with a buffer groove, and an elastic band is provided in the buffer groove, the elastic band being used to cushion the user's head.

[0015] The sofa according to a second aspect embodiment of the present invention includes the headrest structure of the first aspect embodiment of the present invention.

[0016] The sofa according to the embodiments of this utility model has at least the following beneficial effects: The sofa of this application allows users to adjust the tilt angle of the first headrest assembly and the lateral wrapping angle of the two second headrest assemblies according to different scenarios such as reading, watching TV or resting, so that the headrest conforms to the curve of the user's head and the physiological curvature of the neck, reducing the tension and fatigue of the neck muscles when sitting or lying for a long time, preventing cervical strain, thereby comprehensively improving the comfort, health and overall user experience of the sofa, and meeting the modern home's pursuit of humanized design and personalized comfort.

[0017] 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

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the headrest structure according to the first aspect of the present invention; Figure 2 for Figure 1 The diagram shows the structure of the first headrest assembly. Figure 3 for Figure 2 The diagram shows a split view of the first headrest assembly. Figure 4 for Figure 2 The diagram shown is a partial split view of the first headrest assembly. Figure 5 for Figure 1 The diagram shows the structure of the second headrest assembly. Figure 6 for Figure 5 One of the exploded views of the second headrest assembly shown; Figure 7 for Figure 5 The second exploded view of the second headrest assembly shown; Figure 8 for Figure 5 The diagram shown is a partial split view of the second headrest assembly. Figure 9 for Figure 1 The diagram shows the structure of the headrest height adjustment component. Figure 10 for Figure 1 The diagram shows the structure of the headrest support.

[0019] Reference numerals: 100, support base; 110, mounting groove; 120, connecting hole; 200. First headrest assembly; 210. Cushioning groove; 220. Elastic band; 230. First slot; 300. Second headrest assembly; 310. Second slot; 400, First adjusting component; 410, First limiting rod; 411, First limiting slot; 420, First adjusting rod; 421, First hollow area; 430, First connecting shaft; 440, First limiting member; 450, First elastic member; 460, First cover; 470, Second cover; 480, First reinforcing shaft; 490, First extension post; 491, Adjusting groove; 500, Second adjusting component; 510, Second limiting rod; 511, Second limiting slot; 520, Second adjusting rod; 521, Second hollow area; 530, Second connecting shaft; 540, Second limiting member; 550, Second elastic member; 560, Third cover; 570, Fourth cover; 580, Second reinforcing shaft; 590, Second extension post; 600, Height adjustment component; 610, Base; 611, Opening; 612, Head; 613, Tail; 620, Height limiting component; 630, First connecting component; 640, First gasket. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are 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.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] Reference Figure 1 The first aspect of this utility model provides a headrest structure, including a support base 100, a first headrest assembly 200, and two second headrest assemblies 300. The first headrest assembly 200 is connected to the support base 100 via a first adjusting assembly 400. The first adjusting assembly 400 can drive the first headrest assembly 200 to rotate, thereby adjusting the angle between the first headrest assembly 200 and the support base 100. The two second headrest assemblies 300 are symmetrically arranged on opposite sides of the first headrest assembly 200. Each second headrest assembly 300 is connected to the first headrest assembly 200 via a second adjusting assembly 500. The second adjusting assembly 500 can drive the second headrest assembly 300 to rotate, thereby adjusting the angle between the second headrest assembly 300 and the first headrest assembly 200.

[0026] Specifically, the first adjustment component 400 can drive the first headrest component 200 to rotate, thereby adjusting the angle between the first headrest component 200 and the support seat 100. At the same time, the second adjustment component 500 can drive the second headrest component 300 to rotate, thereby adjusting the angle between the second headrest component 300 and the first headrest component 200. That is, the headrest structure realizes the rotation adjustment of the first headrest component 200 relative to the support seat 100 through the first adjustment component 400, and realizes the rotation adjustment of the two second headrest components 300 relative to the first headrest component 200 through the second adjustment component 500. This allows the angle between the first headrest component 200 and the support seat 100, as well as the angle between the second headrest component 300 and the first headrest component 200, to be flexibly adjusted, so as to match the physiological curvature of the neck of different users and the support needs in different usage scenarios. In addition, by adjusting the angle of the second headrest assembly by 300 degrees, a more fitting and enveloping feel is created, so that all parts of the neck can receive appropriate support. This avoids fatigue such as soreness and stiffness in the neck muscles due to continuous unnatural stress, reduces the occurrence of health problems such as cervical strain, improves comfort and ease of use, and meets the high-quality demand of modern consumers for personalized and humanized support in home products.

[0027] Reference Figures 1 to 3In some embodiments, the first adjustment assembly 400 includes a first limiting rod 410, a first adjusting rod 420, a first connecting shaft 430, and a first limiting member 440. The first limiting rod 410 is connected to the support base 100, and the first adjusting rod 420 is connected to the first headrest assembly 200. The first limiting rod 410 is connected to the first adjusting rod 420 via the first connecting shaft 430. The first limiting rod 410 is provided with a plurality of first limiting slots 411 arranged in an arc shape, and the first adjusting rod 420 is provided with a first hollow area 421 corresponding to the first limiting slots 411. At least a portion of the first limiting member 440 is disposed within the first hollow area 421. The first adjusting rod 420 can rotate around the first connecting shaft 430. The first limiting member 440 engages with the corresponding first limiting slot 411 to limit the first adjusting rod 420. This not only enables the first headrest assembly to be adjusted at more than 200 angles, but also ensures the stability of the position after adjustment, preventing angle deviation due to force during use and ensuring the reliability of the support effect. At the same time, the arc-shaped arrangement of the first limiting slot 411 makes the distribution of adjustment angles more in line with the usage requirements, improving the accuracy and adaptability of adjustment.

[0028] In some embodiments, the included angle between the first headrest assembly 200 and the support base 100 is set to 180° to 225°, and there are nine first limiting slots 411. In a counterclockwise direction, when the first limiting member 440 is engaged with the nine first limiting slots 411 in sequence, the included angle between the first headrest assembly 200 and the support base 100 decreases sequentially with a tolerance of 5°. In a counter-clockwise direction, when the first limiting member 440 engages with the first first limiting slot 411, the angle between the first headrest assembly 200 and the support base 100 is 225°; when the first limiting member 440 engages with the last first limiting slot 411, the angle between the first headrest assembly 200 and the support base 100 is 180°. That is, when the first headrest assembly 200 is rotated counter-clockwise, the angle between the first headrest assembly 200 and the support base 100 gradually decreases from 225° to 180°, allowing the first headrest assembly 200 to be adjusted towards the user. Of course, in actual design, the angle between the first headrest assembly 200 and the support base 100 can be designed according to actual needs.

[0029] Specifically, when the user manually pulls the first headrest assembly 200, the first adjusting rod 420 rotates counterclockwise by a certain angle. The first adjusting rod 420 drives the first limiting member 440 to slide sequentially along multiple arc-shaped first limiting slots 411 to the desired position. When the first headrest assembly 200 is released, the first limiting member 440 engages with the corresponding first limiting slot 411, thereby limiting the first adjusting rod 420 and preventing the first headrest assembly 200 from continuing to rotate. The multiple first limiting slots 411 increase the number of adjustment levels of the first headrest assembly 200, reduce the adjustment range, and, combined with the arc-shaped arrangement of the multiple first limiting slots 411, make the angle adjustment of the first headrest assembly 200 more consistent with the neck's movement trajectory, ensuring that the user can find a support angle that better fits their own neck's physiological curvature, enhancing comfort and support stability.

[0030] In some other embodiments, the number of first limiting slots 411 can be set to five, seven or eight, etc. In actual design, the number of first limiting slots 411 can be designed according to actual needs.

[0031] In some embodiments, when the first adjusting rod 420 rotates counterclockwise to the first limiting member 440 and the last first limiting slot 411, the first adjusting rod 420 is rotated further so that the first limiting member 440 and the last first limiting slot 411 are not engaged. At this time, the first headrest assembly 200 is manually pulled so that the first adjusting rod 420 rotates clockwise by a preset angle, and the first limiting member 440 engages with the first first limiting slot 411, thereby resetting the first headrest assembly 200 and forming a complete adjustment cycle. This allows the user to quickly reset the first headrest assembly 200 to the maximum angle with the support base 100 after adjusting the first headrest assembly 200 to the minimum angle with the support base 100 through continuous operation, simplifying the reset operation process. It should be noted that when the first adjusting rod 420 rotates clockwise by a preset angle, the first limiting member 440 does not engage with the multiple first limiting slots 411, thus avoiding obstruction during the reset process due to engagement with the first limiting slots 411, ensuring smooth and unobstructed reset operation, and improving the convenience of adjustment.

[0032] Reference Figure 4In some embodiments, the first adjustment component 400 further includes a first elastic element 450, which is disposed within the first hollow area 421. The first elastic element 450 abuts against the first limiting element 440, and the first elastic element 450 can apply a continuous elastic force to the first limiting element 440, ensuring that the first limiting element 440 is stably engaged in the corresponding first limiting slot 411 in the non-adjusted state, thereby enhancing the firmness of the engagement structure and preventing the first headrest component 200 from accidentally sliding or shifting at an angle due to external forces during use, thus ensuring the stability of the support angle. During the adjustment process, when the first adjustment rod 420 rotates, the first limiting element 440... When the first elastic element 450 disengages from the current first limiting slot 411, it deforms as the first limiting element 440 moves. When it rotates to the next first limiting slot 411 position, the elastic force of the first elastic element 450 can push the first limiting element 440 to automatically engage with the corresponding first limiting slot 411, reducing manual pressing and other additional operations, making the adjustment process smoother and less strenuous, and improving the ease of operation. At the same time, the elastic force of the first elastic element 450 can buffer the impact force during adjustment, reduce the wear between the first limiting slot 411 and the first limiting element 440, extend the service life of the first adjustment component 400, and ensure the reliability of the adjustment function during long-term use.

[0033] In some embodiments, the first elastic element 450 is set as a spring sheet. Of course, in actual design, the structure of the first elastic element 450 can be designed according to actual needs.

[0034] In some embodiments, two first limiting rods 410 are provided, and the two first limiting rods 410 are symmetrically arranged on opposite sides of the first adjusting rod 420. Both ends of the first limiting member 440 protrude from the first adjusting rod 420, and both ends of the first limiting member 440 are respectively engaged with the first limiting slot 411 of the corresponding first limiting rod 410, so that both sides of the first adjusting rod 420 are limited and constrained, avoiding the first adjusting rod 420 from tilting or shifting due to unilateral force during adjustment or use, thereby improving the stability and force balance of the overall structure of the first adjusting assembly 400.

[0035] In some embodiments, two first hollow areas 421 are provided, and the two first hollow areas 421 are centrally symmetrical about the first connecting shaft 430. Each first hollow area 421 is provided with a first limiting member 440 and a first elastic member 450, and each first limiting member 440 is engaged with a corresponding first limiting slot 411. The central symmetry of the two first hollow areas 421 enables the first adjusting rod 420 to receive more balanced force during rotation, reducing deformation or jamming caused by uneven force, and ensuring smoother and more stable adjustment operation.

[0036] Reference Figure 2 , Figure 3In some embodiments, the first adjustment component 400 further includes a first cover 460 and a second cover 470. One end of the first connecting shaft 430 is connected to the first cover 460, and the other end of the first connecting shaft 430 passes through the first adjustment rod 420 and the first limiting rod 410 and is connected to the second cover 470. Thus, the first hollow area 421 and a plurality of first limiting slots 411 are disposed between the first cover 460 and the second cover 470, which can protect the first limiting member 440 and the first elastic member 450 inside the first adjustment component 400, prevent dust and impurities from entering and causing the components to jam or wear, and at the same time prevent the human body from contacting the internal components during use and causing safety hazards. In addition, the first adjusting assembly 400 also includes a first reinforcing shaft 480. One end of the first reinforcing shaft 480 is connected to the first cover 460, and the other end is connected to the first adjusting rod 420. This enhances the connection strength between the first cover 460 and the first adjusting rod 420, making the structure more stable during relative rotation and reducing shaking or deformation. Furthermore, both the first connecting shaft 430 and the first reinforcing shaft 480 are rivets. The strong and reliable connection of the rivets further improves the connection stability between the components, ensuring that the first adjusting assembly 400 is less prone to loosening during long-term use and frequent adjustments, thus extending its service life. Of course, in actual design, the structure of the first connecting shaft 430 and the first reinforcing shaft 480 can be designed according to design requirements.

[0037] Reference Figures 5 to 8 In some embodiments, the second adjustment assembly 500 includes a second limiting rod 510, a second adjusting rod 520, a second connecting shaft 530, and a second limiting member 540. The second limiting rod 510 is connected to the first headrest assembly 200, and the second adjusting rod 520 is connected to the second headrest assembly 300. The second limiting rod 510 is connected to the second adjusting rod 520 via the second connecting shaft 530. The second limiting rod 510 is provided with a plurality of second limiting slots 511 arranged in an arc shape, and the second adjusting rod 520 is provided with corresponding slots 511. The second hollow area 521 has at least a portion of the second limiting member 540 disposed within it. The second adjusting rod 520 can rotate around the second connecting shaft 530. The second limiting member 540 engages with the corresponding second limiting slot 511 to limit the second adjusting rod 520. This allows for more than 300-degree adjustment of the second headrest assembly and ensures the stability of the adjusted position, preventing angle shift due to force during use and guaranteeing the reliability of the support effect. At the same time, the arc-shaped arrangement of the second limiting slots 511 makes the adjustment angle distribution more in line with usage requirements.

[0038] In some embodiments, the included angle between the second headrest assembly 300 and the first headrest assembly 200 is set to 135° to 180°, and there are nine second limiting slots 511. In a counter-clockwise direction, when the second limiting member 540 sequentially engages with the nine second limiting slots 511, the included angle between the second headrest assembly 300 and the first headrest assembly 200 decreases sequentially with a tolerance of 5°. (Refer to...) Figure 1 , Figure 8 Taking the second headrest assembly 300 on the left as an example, in a counter-clockwise direction, when the second limiting member 540 engages with the first second limiting slot 511, the angle between the second headrest assembly 300 and the first headrest assembly 200 is 180°; when the second limiting member 540 engages with the last second limiting slot 511, the angle between the second headrest assembly 300 and the first headrest assembly 200 is 135°. That is, when the second headrest assembly 300 is rotated counter-clockwise, the angle between the second headrest assembly 300 and the first headrest assembly 200 gradually decreases from 180° to 135°, allowing the second headrest assembly 300 to be adjusted towards the user. Of course, in actual design, the angle between the second headrest assembly 300 and the first headrest assembly 200 can be designed according to actual needs.

[0039] Specifically, when the user manually pulls the second headrest assembly 300, the second adjusting rod 520 rotates counterclockwise by a certain angle. The second adjusting rod 520 drives the second limiting member 540 to slide sequentially along multiple arc-shaped second limiting slots 511 to the desired position. When the second headrest assembly 300 is released, the second limiting member 540 engages with the corresponding second limiting slot 511, thereby limiting the second adjusting rod 520 and preventing the second headrest assembly 300 from continuing to rotate. The multiple second limiting slots 511 increase the number of adjustment levels of the second headrest assembly 300, reduce the adjustment range, and, combined with the arc-shaped arrangement of the multiple second limiting slots 511, make the angle adjustment of the second headrest assembly 300 more closely fit the user's head, creating a more comfortable and supportive feel, ensuring that all parts of the neck receive appropriate support.

[0040] In some other embodiments, the number of second limiting slots 511 can be set to five, seven or eight, etc. In actual design, the number of second limiting slots 511 can be designed according to actual needs.

[0041] In some of these embodiments, reference is made to Figure 1 , Figure 8Taking the second headrest assembly 300 on the left as an example, when the second adjusting rod 520 rotates counterclockwise to the second limiting member 540 and the last second limiting slot 511, continue rotating the second adjusting rod 520. The second limiting member 540 and the last second limiting slot 511 will not engage. At this time, manually pull the second headrest assembly 300 so that the second adjusting rod 520 rotates clockwise by a preset angle. Then, the second limiting member 540 engages with the first second limiting slot 511, thereby resetting the second headrest assembly 300 and forming a complete adjustment cycle. This allows the user to quickly reset the second headrest assembly 300 to the maximum angle with the first headrest assembly 200 after adjusting the second headrest assembly 300 to the minimum angle with the first headrest assembly 200 through continuous operation, simplifying the reset operation process. It should be noted that when the second adjusting rod 520 rotates clockwise by a preset angle, the second limiting member 540 does not engage with the multiple second limiting slots 511, thus avoiding obstruction during the reset process due to engagement with the second limiting slots 511, ensuring smooth and unobstructed reset operation, and improving the convenience of adjustment.

[0042] In some embodiments, the second adjustment component 500 further includes a second elastic element 550 disposed within the second hollow area 521. The second elastic element 550 abuts against the second limiting member 540, and the second elastic element 550 can apply a continuous elastic force to the second limiting member 540, ensuring that the second limiting member 540 is stably engaged in the corresponding second limiting slot 511 in the non-adjusted state. This enhances the firmness of the engagement structure and prevents the second headrest component 300 from accidentally sliding or shifting at an angle due to external forces during use, thus ensuring the stability of the support angle. During adjustment, when the second adjustment rod 520 rotates, the second limiting member 540... When disengaged from the current second limit slot 511, the second elastic element 550 deforms as the second limit element 540 moves. When rotated to the next second limit slot 511 position, the elastic force of the second elastic element 550 can push the second limit element 540 to automatically engage with the corresponding second limit slot 511, reducing manual pressing and other additional operations, making the adjustment process smoother and less strenuous, and improving the ease of operation. At the same time, the elastic force of the second elastic element 550 can buffer the impact force during adjustment, reduce the wear between the second limit slot 511 and the second limit element 540, extend the service life of the second adjustment component 500, and ensure the reliability of the adjustment function during long-term use.

[0043] In some embodiments, the second elastic element 550 is set as a spring sheet. Of course, in actual design, the structure of the second elastic element 550 can be designed according to actual needs.

[0044] In some embodiments, two second limiting rods 510 are provided, and the two second limiting rods 510 are symmetrically arranged on opposite sides of the second adjusting rod 520. Both ends of the second limiting member 540 protrude from the second adjusting rod 520, and both ends of the second limiting member 540 are respectively engaged with the second limiting slots 511 of the corresponding second limiting rods 510, so that both sides of the second adjusting rod 520 are limited and constrained, avoiding the second adjusting rod 520 from tilting or shifting due to unilateral force during adjustment or use, thereby improving the stability and force balance of the overall structure of the second adjusting assembly 500.

[0045] In some embodiments, two second hollow areas 521 are provided, and the two second hollow areas 521 are centrally symmetrical about the second connecting shaft 530. Each second hollow area 521 is provided with a second limiting member 540 and a second elastic member 550, and each second limiting member 540 is engaged with a corresponding second limiting slot 511. The central symmetry of the two second hollow areas 521 enables the second adjusting rod 520 to be subjected to more balanced force during rotation, reducing deformation or jamming caused by uneven force, and ensuring a smoother and more stable adjustment operation.

[0046] Reference Figure 6 , Figure 7 In some embodiments, the second adjustment assembly 500 further includes a third cover 560 and a fourth cover 570. One end of the second connecting shaft 530 is connected to the third cover 560, and the other end of the second connecting shaft 530 passes through the second adjustment rod 520 and the second limiting rod 510 and is connected to the fourth cover 570. Thus, the second hollow area 521 and a plurality of second limiting slots 511 are disposed between the third cover 560 and the fourth cover 570, which can protect the second limiting member 540 and the second elastic member 550 inside the second adjustment assembly 500, prevent dust and impurities from entering and causing the components to jam or wear, and at the same time prevent the human body from contacting the internal components during use and causing safety hazards. In addition, the second adjustment assembly 500 also includes a second reinforcing shaft 580. One end of the second reinforcing shaft 580 is connected to the third cover 560, and the other end is connected to the second adjustment rod 520. This enhances the connection strength between the third cover 560 and the second adjustment rod 520, making the structure more stable during relative rotation and reducing shaking or deformation. Furthermore, both the second connecting shaft 530 and the second reinforcing shaft 580 are rivets. The strong and reliable connection of the rivets further improves the connection stability between the components, ensuring that the second adjustment assembly 500 is less prone to loosening during long-term use and frequent adjustments, thus extending its service life. Of course, in actual design, the structure of the second connecting shaft 530 and the second reinforcing shaft 580 can be designed according to design requirements.

[0047] Reference Figure 1 , Figure 2 , Figure 9 In some embodiments, the headrest structure further includes a height adjustment component 600, which is connected to the support base 100. A first adjustment component 400 is plugged into the height adjustment component 600 and can move along the axial direction of the height adjustment component 600 to adjust the distance between the first headrest component 200 and the support base 100. This allows it to adapt to the neck height needs of users of different heights and sitting postures, enabling users to adjust the height of the first headrest component 200 according to their own neck position, ensuring that the neck always receives appropriate support. Furthermore, the plugging and connecting of the first adjustment component 400 and the height adjustment component 600 ensures the stability of their connection and improves the convenience of adjusting the height of the first headrest component 200. Simultaneously, the height adjustment component 600, in conjunction with the angle adjustment of the first adjustment component 400 and the side angle adjustment of the second adjustment component 500, enables multi-directional adjustment, meeting the personalized support needs of different users in different scenarios and improving the adaptability and comfort of the headrest structure.

[0048] Reference Figure 1 , Figure 9 , Figure 10 In some embodiments, the height adjustment component 600 includes a base 610 and a height limiting member 620 connected to the base 610. The base 610 is connected to the support base 100 and has an opening 611. The first adjustment component 400 has a plurality of adjustment slots 491 that cooperate with the opening 611. At least a portion of the height limiting member 620 passes through the opening 611 and engages with the adjustment slots 491 to limit the first adjustment component 400 and ensure that the position is stable after height adjustment.

[0049] Reference Figure 1 , Figure 2 , Figure 9 Specifically, the first adjustment assembly 400 also includes a first extension post 490, a first limiting rod 410 connected to the first extension post 490, and multiple adjustment slots 491 disposed on the side of the first extension post 490 away from the first limiting rod 410. These multiple adjustment slots 491 are sequentially arranged along the axial direction of the first extension post 490, providing multiple height adjustment options for the first headrest assembly 200 to meet different height adjustment needs. The end of the first extension post 490 away from the first limiting rod 410 is inserted into the base 610, and height positioning is achieved through the cooperation of the adjustment slots 491 and the height limiting member 620. When it is necessary to raise the first headrest assembly 200, the first headrest assembly 200 is pulled to the desired position away from the support base 100. At this time, the first extension post 490 slides within the opening 611 of the base 610. Releasing the first headrest assembly 200 causes the height limiting member 620 to engage with the corresponding adjustment slot 491. The operation is simple and convenient, requiring no complicated steps.

[0050] In some embodiments, the outer side of the first extension post 490 is provided with nine adjustment slots 491, and the distance between two adjacent adjustment slots 491 is 1cm. That is, the height adjustment range of the first adjustment component 400 is 0-9cm, and each adjustment level is 1cm, so that the user can adjust the height of the first headrest component 200 according to their own height. Of course, in actual design, the height adjustment range and adjustment levels of the first adjustment component 400 can be designed according to actual needs.

[0051] In some embodiments, the height limiting member 620 is configured as a spring clip. Utilizing the elastic properties of the spring clip, when the first adjusting component 400 is pulled to adjust the height, the spring clip disengages from the current adjusting slot 491 due to force, avoiding obstruction to the adjustment process and making the height adjustment operation smoother and less strenuous. Once adjusted to the desired position, the spring clip automatically pops out and engages with the corresponding adjusting slot 491 under its own elastic force, completing the limiting operation without additional manual intervention, thus improving operational convenience. Furthermore, the spring clip can conform to the adjusting slot 491, enhancing the stability of the limiting and preventing the first adjusting component 400 from accidentally slipping off due to external forces during use, ensuring stability after height adjustment. Of course, in actual design, the structure of the height limiting member 620 can be designed according to actual needs.

[0052] Reference Figure 9 In some embodiments, the height adjustment assembly 600 further includes a first connector 630, the support base 100 is provided with a mounting groove 110 and a connecting hole 120, the mounting groove 110 communicates with the connecting hole 120, and the base 610 includes a head 612 and a tail 613 connected to the head 612. The head 612 is disposed in the mounting groove 110, and the tail 613 passes through the connecting hole 120 and is connected to the first connector 630, thereby installing the base 610 in the support base 100 and preventing the base 610 from becoming loose or shifting during the movement and adjustment of the first adjustment assembly 400.

[0053] In some embodiments, the first connector 630 is a nut, and the outer side of the tail 613 is threaded, with the first connector 630 threadedly connected to the tail 613. When the base 610 is installed, the tail 613 is passed through the connecting hole 120, and the first connector 630 is threadedly connected to the tail 613, with the first connector 630 abutting against the support base 100. This assembles the base 610 with the support base 100, preventing the base 610 from loosening or shifting during the movement of the first adjusting component 400, thus ensuring the structural stability of the height adjusting component 600. Furthermore, a first washer 640 is sleeved on the outer side of the tail 613, and the first washer 640 is positioned between the head 612 and the first connector 630. The first washer 640 can disperse the pressure at the contact point between the first connector 630 and the support base 100, preventing excessive local pressure during tightening of the first connector 630 and causing crush damage to the support base 100, thus protecting the structural integrity of the support base 100. Meanwhile, the first gasket 640 can also reduce the friction between the first connector 630 and the support 100, reduce component wear, and extend the service life of the support 100 and the first connector 630.

[0054] Reference Figure 1 , Figure 5 In some embodiments, the second adjustment assembly 500 further includes a second extension post 590 and a second connector. A second limiting rod 510 is connected to the second extension post 590. The side of the second extension post 590 away from the second limiting rod 510 passes through the first headrest assembly 200 and connects to the second connector, thereby assembling the second headrest assembly 300 with the first headrest assembly 200. This prevents the second headrest assembly 300 from disengaging or loosening from the first headrest assembly 200 during rotation adjustment or use, ensuring the structural stability of the second adjustment assembly 500. Furthermore, the second connector is a nut, and the outer side of the second extension post 590 is threaded, with the second connector threadedly connected to the second extension post 590. Additionally, a second washer is fitted onto the outer side of the second extension post 590. The second washer can disperse the pressure at the contact point between the second connector and the first headrest assembly 200, preventing excessive local pressure during tightening of the second connector from causing squeezing damage to the first headrest assembly 200 and protecting the structural integrity of the first headrest assembly 200. At the same time, the second gasket can also reduce the friction between the second connector and the first headrest assembly 200, reduce component wear, and extend the service life of the first headrest assembly 200 and the second connector.

[0055] Reference Figure 1In some embodiments, the first headrest assembly 200 is provided with a cushioning groove 210, within which an elastic band 220 is provided to cushion the user's head. The elastic band 220 has soft properties and can elastically deform when the user's head rests against the first headrest assembly 200, cushioning the contact impact between the user's head and the first headrest assembly 200, avoiding discomfort caused by hard contact. At the same time, the elasticity of the elastic band 220 can adapt to the shape of the user's head, enhancing the fit to the user's head, distributing pressure on the user's head, reducing local pressure, and further improving the user's head comfort experience. Furthermore, the elastic band 220, in conjunction with the angle adjustment function of the first headrest assembly 200, allows the user's head to obtain soft and close-fitting cushioning support at different support angles.

[0056] Reference Figure 1 In some embodiments, the first headrest assembly 200 is provided with a first slot 230, and at least a portion of the first adjustment assembly 400 is disposed within the first slot 230. The first slot 230 provides a receiving space for the first adjustment assembly 400, allowing at least a portion of the first adjustment assembly 400 to be embedded therein, thereby reducing the overall volume of the headrest structure and making the structure more compact. At the same time, the provision of the first slot 230 ensures that the first adjustment assembly 400 runs along a preset trajectory when driving the first headrest assembly 200 to rotate, avoiding deviation or jamming during rotation and ensuring the smoothness of angle adjustment operation.

[0057] Reference Figure 1 In some embodiments, the second headrest assembly 300 is provided with a second slot 310, and at least a portion of the second adjustment assembly 500 is disposed within the second slot 310. The second slot 310 provides a receiving space for the second adjustment assembly 500, allowing at least a portion of the second adjustment assembly 500 to be embedded therein; at the same time, the provision of the second slot 310 ensures that the second adjustment assembly 500 runs along a preset trajectory when driving the second headrest assembly 300 to rotate, avoiding deviation or jamming during rotation, and ensuring the smoothness of angle adjustment operation.

[0058] In some embodiments, when the first headrest assembly 200 is adjusted to its lowest position, both the first headrest assembly 200 and the second headrest assembly 300 have a first gap with the support base 100. This prevents the support base 100 from obstructing the adjustment of the first headrest assembly 200, allowing for more flexible angle adjustment. Furthermore, the size of the first gap is 35mm. Of course, in actual design, the size of the first gap can be designed according to specific circumstances.

[0059] In some embodiments, the second headrest assembly 300 has a second gap with the first headrest assembly 200 to facilitate angle adjustment of the second headrest assembly 300. When the second headrest assembly 300 and the first headrest assembly 200 are arranged parallel to each other, the size of the second gap is 40mm. Of course, in actual design, the size of the second gap can be designed according to the actual situation.

[0060] The sofa according to a second aspect embodiment of the present invention includes the headrest structure of the first aspect embodiment of the present invention. The sofa of this application allows users to adjust the tilt angle of the first headrest assembly 200 and the lateral wrapping angle of the two second headrest assemblies 300 according to different scenarios such as reading, watching TV, or resting. This allows the headrest to conform to the user's head 612 curve and the physiological curvature of the neck, reducing neck muscle tension and fatigue during prolonged sitting or lying down, preventing cervical strain, and thus comprehensively improving the sofa's comfort, health benefits, and overall user experience, meeting the modern home's pursuit of humanized design and personalized comfort.

[0061] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A headrest structure, characterized in that, include: Support base; A first headrest assembly is connected to the support base via a first adjustment assembly. The first adjustment assembly can drive the first headrest assembly to rotate, thereby adjusting the angle between the first headrest assembly and the support base. Two second headrest assemblies are symmetrically arranged on opposite sides of the first headrest assembly. Each second headrest assembly is connected to the first headrest assembly via a second adjustment assembly. The second adjustment assembly can drive the second headrest assembly to rotate, thereby adjusting the angle between the second headrest assembly and the first headrest assembly.

2. The headrest structure according to claim 1, characterized in that, The first adjustment assembly includes a first limiting rod, a first adjusting rod, a first connecting shaft, and a first limiting member. The first limiting rod is connected to the support base, the first adjusting rod is connected to the first headrest assembly, and the first limiting rod is connected to the first adjusting rod through the first connecting shaft. The first limiting rod is provided with a plurality of first limiting slots arranged in an arc shape, the first adjusting rod is provided with a first hollow area corresponding to the first limiting slot, at least a portion of the first limiting member is provided in the first hollow area, the first adjusting rod can rotate around the first connecting shaft, and the first limiting member engages with the corresponding first limiting slot to limit the first adjusting rod.

3. The headrest structure according to claim 2, characterized in that, The first adjustment component further includes a first elastic element, which is disposed within the first hollow area. The first elastic element abuts against the first limiting element and is used to apply a continuous elastic force to the first limiting element.

4. The headrest structure according to claim 1, characterized in that, The second adjustment assembly includes a second limiting rod, a second adjusting rod, a second connecting shaft, and a second limiting member. The second limiting rod is connected to the first headrest assembly, the second adjusting rod is connected to the second headrest assembly, and the second limiting rod is connected to the second adjusting rod via the second connecting shaft. The second limiting rod is provided with a plurality of second limiting slots arranged in an arc shape, the second adjusting rod is provided with a second hollow area corresponding to the second limiting slot, at least a part of the second limiting member is provided in the second hollow area, the second adjusting rod can rotate around the second connecting shaft, and the second limiting member engages with the corresponding second limiting slot to limit the second adjusting rod.

5. The headrest structure according to claim 4, characterized in that, The second adjustment component further includes a second elastic element, which is disposed within the second hollow area. The second elastic element abuts against the second limiting element and is used to apply a continuous elastic force to the second limiting element.

6. The headrest structure according to claim 1, characterized in that, The headrest structure also includes a height adjustment component, which is connected to the support base. The first adjustment component is inserted into the height adjustment component, and the first adjustment component can move along the axial direction of the height adjustment component to adjust the distance between the first headrest component and the support base.

7. The headrest structure according to claim 6, characterized in that, The height adjustment component includes a base and a height limiting member connected to the base. The base is connected to the support base and has an opening. The first adjustment component has a plurality of adjustment slots that cooperate with the opening. At least a portion of the height limiting member passes through the opening and engages with the adjustment slots to limit the position of the first adjustment component.

8. The headrest structure according to claim 7, characterized in that, The height adjustment assembly also includes a connector. The support base is provided with a mounting groove and a connecting hole. The mounting groove communicates with the connecting hole. The base includes a head and a tail connected to the head. The head is disposed in the mounting groove, and the tail passes through the connecting hole and is connected to the connector.

9. The headrest structure according to claim 1, characterized in that, The first headrest assembly is provided with a cushioning groove, and an elastic band is provided in the cushioning groove to cushion the user's head.

10. A sofa, characterized in that, Includes the headrest structure as described in any one of claims 1 to 9.

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