A seat headrest

Abstract

The utility model relates to the technical field of seat accessory, especially to a seat headrest, including the support frame for fixed connection on the upper end of chair back, and the headrest frame setting on the support frame, the support surface for supporting head is built on the headrest frame, the pressing plate is fixedly connected on the headrest frame, and the lifting gap is formed between the pressing plate and the headrest frame, the lifting base is slidably positioned in the lifting gap, and at least one end of the lifting base extends out of the lifting gap, the top of the support frame is connected on the end of the lifting base extending out of the lifting gap, and the headrest frame can be lifted relative to the support frame and the lifting base connected with the support frame. The scheme has the advantages of simple structure, convenient operation, accurate positioning, strong durability and beauty.

Description

Technical Field

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

[0002] Modern seating designs increasingly prioritize comfort. To meet this demand, many seats not only feature backrests for back support but also headrests for head support. However, due to significant differences in consumer body size, headrest height often needs to be adjusted vertically to suit different users. Currently, several headrest height adjustment methods exist on the market. For example, a common design involves an oval-shaped hole at the bottom of the headrest, which is then screwed to the backrest. This structure is simple and low-cost, but the adjustment process is relatively cumbersome, resulting in a poor user experience. Another design uses a motor-driven worm gear to adjust the headrest vertically. This method is convenient but has significant drawbacks: firstly, the adjustment structure is overly complex, greatly increasing manufacturing costs; secondly, the motor-driven system may pose safety hazards, especially during prolonged use or after impact. Furthermore, existing headrest adjustment mechanisms often lack precise positioning capabilities, failing to meet users' needs for precise height adjustment. Additionally, some adjustment mechanisms are not durable enough, prone to loosening or failure after prolonged use. Finally, some designs lack aesthetic appeal and are not well-integrated with the overall seat design.

[0003] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0004] In order to solve the above problems, the purpose of this utility model is to provide a seat headrest that has the advantages of simple structure, convenient operation, precise positioning, high durability and beautiful appearance.

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

[0006] A seat headrest, with the following technical solution: It includes a support frame for fixing to the upper end of a chair back, and a headrest frame disposed on the support frame; the headrest frame has a support surface for supporting the head; a pressure plate is fixed to the headrest frame, and a lifting gap is formed between the pressure plate and the headrest frame; a lifting base is slidably positioned within the lifting gap, and at least one end of the lifting base extends out of the lifting gap; the top of the support frame is connected to the end of the lifting base extending out of the lifting gap; the headrest frame is capable of lifting relative to the support frame and the connected lifting base.

[0007] Furthermore, this application also proposes that the two ends of the lifting base extend out of the lifting gap; the support frame is constructed as a "U"-shaped bracket, and the two ends of the "U"-shaped support frame are respectively connected to the two ends of the lifting base.

[0008] Furthermore, this application also proposes that the two ends of the "U" shape of the support frame are fixedly connected to the two ends of the lifting base or are limited to a rotating connection.

[0009] Furthermore, this application also proposes that the two ends of the lifting base are provided with protrusions, the protrusions including a central protrusion and an edge protrusion disposed on the radial edge of the central protrusion; the two ends of the "U" shape of the support frame are provided with grooves; the grooves include a central groove and an edge groove disposed on the radial edge of the central groove; when the two ends of the "U" shape of the support frame are connected to the two ends of the lifting base, the protrusions are adapted to be inserted into the grooves.

[0010] Furthermore, this application also proposes that a hook is provided on the front side of the lower end of the support frame, and a positioning stop is provided below the opening of the hook; a hanging opening for engaging the upper end of the chair back is formed between the hook and the positioning stop.

[0011] Furthermore, this application also proposes that a decorative groove is provided on the rear side of the lower end of the support frame, and a connecting through hole is constructed at the lower end of the support frame to connect the decorative groove and the hanging opening. A fastening component passes through the connecting through hole to fix the support frame to the upper end of the chair back; a decorative cover is embedded in the decorative groove.

[0012] Furthermore, this application also proposes that the headrest frame is provided with a beam plate in the middle to connect its upper and lower frames, and a pressure plate is fixed to the beam plate, with a lifting gap formed between the pressure plate and the beam plate.

[0013] Furthermore, this application also proposes that the pressure plate and / or beam plate have multiple positioning grooves arranged longitudinally, and the lifting base is provided with an elastic positioning component, the output end of which is elastically engaged with any positioning groove to achieve height positioning.

[0014] Furthermore, this application also proposes that a hollow column is provided at the center of the lifting base, and an elastic positioning component is installed on the hollow column; the elastic positioning component includes a positioning spring disposed inside the hollow column, and a positioning end disposed on the opening of the hollow column; one end of the positioning spring elastically supports the positioning end.

[0015] As described above, this application provides a seat headrest, including a support frame for fixing to the upper end of a chair back, and a headrest frame disposed on the support frame. The headrest frame has a support surface for supporting the head. A pressure plate is fixed to the headrest frame, forming a lifting gap between the pressure plate and the headrest frame. A lifting base is slidably positioned within the lifting gap, with at least one end of the lifting base extending out of the lifting gap. The top of the support frame is connected to the end of the lifting base extending out of the lifting gap. The headrest frame can be raised and lowered relative to the support frame and its connected lifting base. This design allows the headrest frame to be raised and lowered relative to the support frame, achieving height adjustment. It is also simple in structure and easy to operate. The design of the lifting base and positioning groove ensures precise positioning, the elastic positioning component improves durability, and the overall structure is aesthetically pleasing and harmonious. It has the advantages of simple structure, easy operation, precise positioning, high durability, and aesthetic appeal. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a seat headrest from the front view, provided for this application.

[0017] Figure 2 This is a side view of a seat headrest provided in this application.

[0018] Figure 3 This is a partial exploded diagram of a seat headrest provided in this application.

[0019] Figure 4 This is a schematic diagram of the support frame. 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 intended 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 terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation 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] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] like Figures 1-4As shown, this embodiment relates to a seat headrest, including a support frame 1 for fixing to the upper end of the chair back, and a headrest frame 2 disposed on the support frame 1; the headrest frame 2 has a support surface for supporting the head; a pressure plate 3 is fixed to the headrest frame 2, and a lifting gap 30 is formed between the pressure plate 3 and the headrest frame 2; a lifting base 4 is slidably positioned within the lifting gap 30, and at least one end of the lifting base 4 extends out of the lifting gap 30; the top of the support frame 1 is connected to the end of the lifting base 4 that extends out of the lifting gap 30; the headrest frame 2 can be raised and lowered relative to the support frame 1 and the connected lifting base 4. In this solution, the lifting gap 30 between the pressure plate 3 and the headrest frame 2 provides sliding space for the lifting base 4 and regulates the range of motion of the lifting base 4, making the raising and lowering operation of the headrest smoother. At least one end of the lifting base 4 extends out of the lifting gap 30, and the top of the support frame 1 is connected to the end of the lifting base 4 that extends out of the lifting gap 30. This connection method ensures the stability of the headrest during the lifting process. The support surface constructed on the headrest frame 2 can be achieved by using mesh fabric with edges fixed to the headrest frame 2, further improving the comfort of the headrest. The lifting base 4 can be made of metal or high-strength plastic to ensure its durability and stability. The connection between the support frame 1 and the lifting base 4 can be achieved by bolts, clips, or other fasteners to ensure the firmness of the connection. The technical solution of this application, by setting the lifting base 4 and the lifting gap 30, enables the headrest frame 2 to be raised and lowered relative to the support frame 1, thereby realizing the adjustment of the headrest height. Compared with the prior art, this solution has a simple structure and is easy to operate, effectively solving the problem of inconvenient headrest height adjustment. Through the cooperation of these technical features, the lifting operation of the headrest is smoother and has high stability during use.

[0026] In a further embodiment, the two ends of the lifting base 4 extend out of the lifting gap 30; the support frame 1 is constructed as a "U"-shaped bracket, with the two ends of the "U" shape of the support frame 1 connected to the two ends of the lifting base 4 respectively. Specifically, the two ends of the lifting base 4 extending out of the lifting gap 30 increase the contact area with the support frame 1 and improve the stability of the connection. The support frame 1 is constructed as a "U"-shaped bracket, with its two ends connected to the two ends of the lifting base 4 respectively. This structural design makes the connection between the support frame 1 and the lifting base 4 more robust, further enhancing the stability of the headrest during the lifting process. Through this design, the headrest can remain stable during lifting, avoiding the problem of shaking or falling off due to unstable connection. Therefore, the technical solution of this application, by having the two ends of the lifting base 4 extend out of the lifting gap 30 and adopting a "U"-shaped bracket structure, effectively solves the technical problem of unstable connection between the support frame 1 and the lifting base 4 during the lifting process of the headrest. Compared with existing technologies, this technical solution is not only simple in structure and low in manufacturing cost, but also significantly improves the stability and safety of the headrest during the lifting process, avoiding the problem of shaking or falling off due to unstable connection.

[0027] Furthermore, this application proposes that the two ends of the "U" shape of the support frame 1 be fixedly connected to the two ends of the lifting base 4 or be connected by a limiting rotation connection. The fixed connection can be achieved through welding, bolting, or riveting to ensure the strength and stability of the connection. The limiting rotation connection can be achieved through hinges, bearings, or pins, allowing the support frame 1 and the lifting base 4 to rotate relative to each other within a certain range, thus providing adjustment flexibility. Therefore, this technical solution achieves stable lifting and lowering of the headrest frame 2 relative to the support frame 1 through either a fixed connection or a limiting rotation connection. The fixed connection ensures the strength of the connection, while the limiting rotation connection provides adjustment flexibility, allowing the headrest to adjust its support angle according to user needs while maintaining structural stability. Compared with existing technologies, this solution not only simplifies the headrest adjustment structure and reduces manufacturing costs, but also improves the convenience and safety of adjustment, avoiding potential safety hazards associated with motor-driven systems.

[0028] Specifically, the lifting base 4 has protrusions at both ends, including a central protrusion 411 and edge protrusions 412 located on the radial edge of the central protrusion 411; the support frame 1 has grooves at both ends of its "U" shape; the grooves include a central groove 111 and edge grooves 112 located on the radial edge of the central groove 111; when the "U" shaped ends of the support frame 1 are connected to the ends of the lifting base 4, the protrusions fit into the grooves. In this design, the central protrusion 411 and edge protrusions 412 provide stronger structural stability in the radial direction, while the design of the central groove 111 and edge groove 112 ensures that the grooves can precisely match the protrusions. The fitting and engaging of the protrusions and grooves can be achieved in various ways; for example, the protrusions can be cylindrical or prismatic, and the grooves can be designed accordingly to match their shape. Furthermore, the surfaces of the protrusions and grooves can be further processed into smooth or slightly uneven structures to enhance the stability of the connection and the smoothness of adjustment. In a preferred embodiment, an elastic element, such as a spring or rubber pad, can be placed between the protrusion and the groove to further buffer the impact force during connection and improve the flexibility of adjustment. Thus, this technical solution achieves a stable connection between the headrest frame 2 and the lifting base 4 through the fitting and engaging of the protrusion and groove. This design not only enhances the stability of the connection but also simplifies the adjustment process, making the lifting of the headrest smoother and more reliable. Compared with existing technologies, this solution avoids the safety hazards associated with complex adjustment structures and motor drives, while reducing manufacturing costs and improving ease of use and safety.

[0029] like Figure 2 and 4As shown, a hook 12 is provided on the front side of the lower end of the support frame 1. A positioning strip 13 is provided below the opening of the hook 12, and a hanging opening 14 for engaging the upper end of the chair back is formed between the hook 12 and the positioning strip 13. The hook 12 can be designed as a metal material with a certain degree of elasticity to better adapt to the shape of the upper end of the chair back during installation. The positioning strip 13 can be made of rigid plastic or metal to ensure sufficient support during headrest installation. The size of the hanging opening 14 can be adjusted according to the thickness of the upper end of the chair back to ensure the headrest is securely fixed to the chair back. Specifically, the hook 12 can be designed in a "J" or "L" shape for better engagement with the upper end of the chair back. The positioning strip 13 can be designed as a strip structure parallel to the hook 12 or as a baffle structure perpendicular to the hook 12 to increase the contact area with the upper end of the chair back and improve the fixing effect. In a preferred embodiment, the hanging opening 14 between the hook 12 and the positioning stop 13 can be designed with an adjustable width to accommodate the upper part of the chair back with different thicknesses. Thus, through the cooperation of the hook 12 and the positioning stop 13, the headrest can be initially positioned on the upper part of the chair back, ensuring that it will not easily move or fall off during installation. This design not only improves the ease of headrest installation but also enhances the stability of the headrest on the upper part of the chair back. Compared with existing technologies, this technical solution solves the problem of unstable fixation of the headrest on the upper part of the chair back through a simple structural design, avoiding complex adjustment structures and additional manufacturing costs, while improving the safety of the headrest in use.

[0030] Furthermore, this application proposes that a decorative groove 15 be provided on the rear side of the lower end of the support frame 1, and a connecting through hole 18 be constructed at the lower end of the support frame 1, passing through the decorative groove 15 and the hanging opening 14. A screw fastener 16 passes through the connecting through hole 18 to secure the support frame 1 to the upper end of the chair back; a decorative cover 17 is embedded in the decorative groove 15. Specifically, the design of the decorative groove 15 not only provides an aesthetically pleasing appearance for the support frame 1, but also further enhances the overall visual effect by embedding the decorative cover 17. The setting of the connecting through hole 18 allows the screw fastener 16 to pass through the decorative groove 15 and the hanging opening 14, firmly connecting the support frame 1 to the upper end of the chair back, ensuring the stability and safety of the headrest. The embedding of the decorative cover 17 conceals the connecting component, improving the overall aesthetics. As a preferred embodiment, the shape of the decorative groove 15 can be rectangular, circular, or other geometric shapes to adapt to different design requirements. The diameter and position of the connecting through hole 18 can be adjusted according to the size of the screw fastener 16 and the structure of the chair back to ensure the stability of the connection. The decorative cover 17 can be made of the same material as the support frame 1, or other decorative materials to further enhance its aesthetics. Thus, the technical solution of this application, through the design of the decorative groove 15 and the connecting through hole 18, not only achieves a secure connection between the support frame 1 and the chair back, but also conceals the connecting parts through the installation of the decorative cover 17, improving the overall aesthetics. Compared with existing technologies, this solution not only solves the problem of a stable connection when the headrest is fixed to the upper part of the chair back, but also takes into account aesthetics, demonstrating high practicality and innovation.

[0031] like Figure 1 and 3 As shown, this application also proposes a headrest frame 2 with a beam plate 21 connecting its upper and lower frames in the middle. A pressure plate 3 is fixed to the beam plate 21, and a lifting gap 30 is formed between the pressure plate 3 and the beam plate 21. The beam plate 21 enhances the overall structural strength of the headrest frame 2, while the lifting gap 30 between the pressure plate 3 and the beam plate 21 accommodates the lifting base 4, allowing it to slide within the gap and thus enabling the lifting function of the headrest frame 2. Specifically, the pressure plate 3 can be fixed to the beam plate 21 by welding, bolting, or other fixing methods. The width of the lifting gap 30 can be adjusted according to the size of the lifting base 4 to ensure smooth lifting. As a preferred embodiment, the materials of the pressure plate 3 and the beam plate 21 can be high-strength steel or aluminum alloy to further improve the stability and durability of the structure. This technical solution, through the cooperation of the beam plate 21 and the pressure plate 3, effectively enhances the stability of the headrest frame 2 during lifting, avoiding swaying or instability caused by a loose structure. Compared with the prior art, the design of this application is not only simple in structure, easy to manufacture and maintain, but also significantly improves the lifting stability of the headrest frame 2, thereby improving the overall comfort and safety of the seat.

[0032] Furthermore, this application proposes that multiple positioning slots 22 are arranged longitudinally on the pressure plate 3 and / or beam plate 21, and an elastic positioning component is provided on the lifting base 4. The output end of the elastic positioning component is elastically engaged with any positioning slot 22 to achieve height positioning. The positioning slots 22 can be arranged with equal or unequal spacing, and the specific spacing can be adjusted according to actual needs. The elastic positioning component can include springs, elastic sheets, or other elastic materials, and its output end can be designed as spherical, cylindrical, or other suitable shapes for engagement. As a preferred embodiment, the output end of the elastic positioning component can be designed with a protruding structure to enhance the engagement stability with the positioning slot 22. In addition, the shape of the positioning slot 22 can be rectangular, circular, or other suitable shapes for engagement, and the specific shape can be designed to match the shape of the output end of the elastic positioning component. Specifically, through the multiple positioning slots 22 arranged longitudinally on the pressure plate 3 and / or beam plate 21, and the elastic positioning component provided on the lifting base 4, the headrest can be quickly and stably fixed in the desired position when adjusting the height. The output end of the elastic positioning component is elastically engaged with any positioning slot 22, preventing the headrest from wobbling or becoming inaccurate during adjustment. Compared with existing technologies, this solution is simple in structure, easy to operate, and has a lower manufacturing cost, effectively solving the problem of unstable positioning during headrest height adjustment. Therefore, headrest height adjustment is more flexible and reliable, improving the user experience.

[0033] In the specific design, a hollow column is positioned at the center of the lifting base 4, and an elastic positioning component is mounted on the hollow column. The elastic positioning component includes a positioning spring 44 housed within the hollow column and a positioning end 45 positioned at the opening of the hollow column. One end of the positioning spring 44 elastically supports the positioning end 45. In this design, the hollow column makes the installation of the elastic positioning component more compact and stable, further enhancing the reliability of positioning. The elastic spring 44 elastically supports the positioning end 45, providing a stable elastic force to ensure accurate positioning of the headrest during height adjustment, avoiding instability caused by external forces or vibrations. As a preferred embodiment, the positioning spring 44 can be made of stainless steel to improve its durability and elasticity. Furthermore, the positioning end 45 can be made of wear-resistant material to enhance its service life and positioning accuracy. Thus, this technical solution, through the combination of the hollow column and the elastic positioning component, effectively solves the technical problem of unstable positioning during headrest height adjustment. Compared with existing technologies, this solution is not only simple in structure and low in cost, but also more convenient and quick in the adjustment process, avoiding the safety hazards caused by motor drive. Through the design of the elastic positioning component, the headrest can maintain a stable position when adjusting the height, improving the user experience.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0035] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A seat headrest, comprising a support frame (1) for fixing to the upper end of a seat back, and a headrest frame (2) disposed on the support frame (1); the headrest frame (2) having a support surface for supporting the head; characterized in that: A pressure plate (3) is fixedly connected to the headrest frame (2), and a lifting gap (30) is formed between the pressure plate (3) and the headrest frame (2). A lifting base (4) is slidably positioned in the lifting gap (30), and at least one end of the lifting base (4) extends out of the lifting gap (30). The top of the support frame (1) is connected to the end of the lifting base (4) that extends out of the lifting gap (30). The headrest frame (2) can be raised and lowered relative to the support frame (1) and the lifting base (4) connected to it. A hook (12) is provided on the front side of the lower end of the support frame (1), and a positioning stop (13) is provided below the opening of the hook (12); a hanging hole (14) for engaging the upper end of the chair back is formed between the hook (12) and the positioning stop (13). The lower end of the support frame (1) is provided with a decorative groove (15) and a connecting through hole (18) is constructed at the lower end of the support frame (1) to connect the decorative groove (15) and the hanging opening (14). The screw fastener (16) passes through the connecting through hole (18) to fix the support frame (1) to the upper end of the chair back. A decorative cover (17) is embedded in the decorative groove (15).

2. A headrest for a seat according to claim 1, characterized in that: The two ends of the lifting base (4) extend out of the lifting gap (30); the support frame (1) is constructed as a "U"-shaped bracket, and the two ends of the "U"-shaped support frame (1) are respectively connected to the two ends of the lifting base (4).

3. A headrest for a seat according to claim 2, characterized in that: The two ends of the "U" shape of the support frame (1) are fixedly connected to the two ends of the lifting base (4) or are limited to rotational connection.

4. A headrest for a seat according to claim 3, characterized in that: The lifting base (4) has protrusions at both ends, including a central protrusion (411) and an edge protrusion (412) located on the radial edge of the central protrusion (411); the support frame (1) has grooves at both ends of the "U" shape; the grooves include a central groove (111) and an edge groove (112) located on the radial edge of the central groove (111); when the two ends of the "U" shape of the support frame (1) are connected to the two ends of the lifting base (4), the protrusions fit into the grooves.

5. A headrest for a seat according to claim 1, characterized in that: The headrest frame (2) is provided with a beam plate (21) connecting its upper and lower frames in the middle. The pressure plate (3) is fixed on the beam plate (21), and a lifting gap (30) is formed between the pressure plate (3) and the beam plate (21).

6. A headrest for a seat according to claim 5, characterized in that: Multiple positioning slots (22) are arranged longitudinally on the pressure plate (3) and / or beam plate (21). An elastic positioning component is provided on the lifting base (4). The output end of the elastic positioning component is elastically engaged in any positioning slot (22) to achieve height positioning.

7. A headrest for a seat according to claim 6, characterized in that: A hollow column is provided at the center of the lifting base (4), and an elastic positioning component is installed on the hollow column. The elastic positioning component includes a positioning spring (44) provided inside the hollow column and a positioning end (45) provided on the opening of the hollow column. One end of the positioning spring (44) is elastically supported on the positioning end (45).

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