Headrest and waist pillow supporting structure, backrest and seat

Abstract

The utility model provides a headrest and waist pillow supporting structure, a backrest and a seat. The headrest and waist pillow supporting structure comprises a support and a backrest, the headrest fixing piece is arranged on the bracket in a manner of swinging around a swinging center line; the headrest driving piece is connected between the support and the headrest fixing piece, and the headrest driving piece can drive the headrest fixing piece to swing; the waist pillow fixing piece is arranged on the bracket in a swinging manner around a swinging center line; the waist pillow driving piece is connected between the support and the waist pillow fixing piece, and the waist pillow driving piece can drive the waist pillow fixing piece to swing; wherein the first end of the headrest driving piece is hinged to the headrest fixing piece, and the second end of the headrest driving piece is hinged to the support; and / or, the first end of the waist pillow driving piece is hinged to the waist pillow fixing piece, and the second end of the waist pillow driving piece is hinged to the support. According to the technical scheme, the problems that in the prior art, the structure of a seat is complex, and the assembling process is tedious are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of furniture structure technology, specifically to a headrest and lumbar support structure, a backrest, and a seat. Background Technology

[0002] As people increasingly pursue comfort in furniture, chairs with head and lumbar adjustment functions are becoming more and more popular, as they can meet the needs of different heights and sitting postures.

[0003] The existing chair includes a seat cushion and a backrest. The backrest includes a headrest and lumbar support structure, as well as a headrest and a lumbar support disposed on the headrest and lumbar support structure. The headrest and lumbar support structure includes a bracket, a headrest fixing member, and a lumbar support fixing member. The headrest fixing member swings on the bracket to drive the headrest to swing, and the lumbar support fixing member swings on the bracket to drive the lumbar support to swing.

[0004] However, in the existing technology, the installation of the headrest and lumbar support on the bracket needs to be carried out independently, which makes the structure of the seat more complex and the assembly process more cumbersome. Utility Model Content

[0005] The main purpose of this utility model is to provide a headrest and lumbar support structure, a backrest and a seat, so as to solve the problem that the structure of the seat in the related technology is relatively complex and the assembly process is relatively cumbersome.

[0006] To achieve the above objectives, according to one aspect of the present invention, a headrest and lumbar support structure is provided, comprising: a bracket; a headrest fixing member swayably disposed on the bracket about a swing center line; a headrest driving member connected between the bracket and the headrest fixing member, the headrest driving member being capable of driving the headrest fixing member to swing; a lumbar support fixing member swayably disposed on the bracket about a swing center line; and a lumbar support driving member connected between the bracket and the lumbar support fixing member, the lumbar support driving member being capable of driving the lumbar support fixing member to swing; wherein, a first end of the headrest driving member is hinged to the headrest fixing member, and a second end of the headrest driving member is hinged to the bracket; and / or, a first end of the lumbar support driving member is hinged to the lumbar support fixing member, and a second end of the lumbar support driving member is hinged to the bracket.

[0007] Furthermore, the bracket is provided with connecting lugs, and the headrest and lumbar support structure also includes a hinge shaft. The hinge shaft passes through the connecting lugs, the headrest fixing member, and the lumbar support member, and the axis of the hinge shaft is the swing center line.

[0008] Furthermore, the bracket has an installation reference surface; the headrest fastener has a headrest fixing reference surface, and the headrest fastener swings on the bracket to make the angle between the headrest fixing reference surface and the installation reference surface adjustable, the angle between the headrest fixing reference surface and the installation reference surface being A, 0°≤A≤50°; and / or, the lumbar pillow fastener has a lumbar pillow fixing reference surface, and the lumbar pillow fastener swings on the bracket to make the angle between the lumbar pillow fixing reference surface and the installation reference surface adjustable, the angle between the lumbar pillow fixing reference surface and the installation reference surface being B, 0°≤B≤30°.

[0009] Furthermore, the headrest fixing member includes a headrest fixing rod and a headrest pushing rod connected at an angle to the headrest fixing rod, the axis of the headrest pushing rod being offset from the swing center line, and the first end of the headrest driving member being hinged to the headrest pushing rod; and / or, the lumbar pillow fixing member includes a lumbar pillow fixing rod and a lumbar pillow pushing rod connected at an angle to the lumbar pillow fixing rod, the axis of the lumbar pillow pushing rod being offset from the swing center line, and the first end of the lumbar pillow driving member being hinged to the lumbar pillow pushing rod.

[0010] Furthermore, the lumbar pillow fixing component includes a lumbar pillow fixing rod and a lumbar pillow pushing rod connected at an angle to the lumbar pillow fixing rod. The first end of the lumbar pillow driving component is hinged to the lumbar pillow pushing rod. The axis of the lumbar pillow pushing rod is set parallel to the swing center line, and the distance between the axis of the lumbar pillow pushing rod and the swing center line is L, where 20cm≤L≤30cm.

[0011] Furthermore, the bracket includes a first connecting rod, a second connecting rod, and a support plate. The second connecting rod is located below the first connecting rod, the support plate connects the first connecting rod and the second connecting rod, the second end of the headrest drive member is hinged to the second connecting rod, and the second end of the lumbar pillow drive member is hinged to the first connecting rod.

[0012] Furthermore, both the headrest drive and the lumbar support drive are linear drive components. The headrest drive extends to drive the headrest fixation component to swing, and the lumbar support drive extends to drive the lumbar support component to swing. The headrest and lumbar support structure also includes an elastic reset component, which is connected between the bracket and the headrest fixation component. The elastic reset component applies an elastic reset force to the headrest fixation component to drive the headrest drive component to shorten and drive the headrest fixation component to swing.

[0013] Furthermore, the bracket is provided with a headrest limiting member, which cooperates with the headrest fixing member to limit the swing range of the headrest fixing member; and / or, the bracket is provided with a lumbar pillow limiting member, which cooperates with the lumbar pillow fixing member to limit the swing range of the lumbar pillow fixing member.

[0014] According to another aspect of the present invention, a backrest is provided, the backrest including a headrest and lumbar support structure, a headrest and a lumbar support, the headrest and lumbar support structure being the aforementioned headrest and lumbar support structure, the headrest being mounted on a headrest fixing member, and the lumbar support being mounted on a lumbar support fixing member.

[0015] According to another aspect of the present invention, a seat is provided, including a seat cushion and a backrest, wherein the backrest is the aforementioned backrest.

[0016] The headrest and lumbar support structure of this utility model includes: a bracket, a headrest fixing component, a headrest driving component, a lumbar support fixing component, and a lumbar support driving component. The headrest fixing component is swayably mounted on the bracket around a swing center line. The headrest driving component connects the bracket and the headrest fixing component, and can drive the headrest fixing component to swing. The lumbar support fixing component is swayably mounted on the bracket around a swing center line. The lumbar support driving component connects the bracket and the lumbar support fixing component, and can drive the lumbar support fixing component to swing. In this way, both the headrest fixing component and the lumbar support fixing component swing around the same swing center line on the bracket, allowing the installation of the headrest fixing component and the lumbar support fixing component on the bracket to be performed simultaneously, thus simplifying the assembly process of the seat. Compared to related technologies where the headrest and lumbar support components swing around different swing center lines, the headrest and lumbar support components in this application can swing around the same swing center line, reducing the number of swing center lines, making the seat structure simpler and more reliable, improving the stability of the headrest and lumbar support, and facilitating subsequent maintenance. Therefore, the technical solution of this application effectively solves the problems of complex seat structures and cumbersome assembly processes in related technologies. Specifically, the first end of the headrest drive component is hinged to the headrest support component, and the second end of the headrest drive component is hinged to the bracket; and / or, the first end of the lumbar support drive component is hinged to the lumbar support component, and the second end of the lumbar support drive component is hinged to the bracket. This makes the connection between the headrest drive component and the headrest support component simple and reliable, as well as the connection between the headrest drive component and the bracket. Similarly, the connection between the lumbar support drive component and the lumbar support component is simple and reliable. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the headrest and lumbar support structure according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A side view of the headrest and lumbar support structure;

[0020] Figure 3 It shows Figure 1 A side view of the headrest fixing component of the headrest and lumbar support structure when it swings;

[0021] Figure 4 It shows Figure 1 A side view of the lumbar support structure's lumbar fixation component when it swings;

[0022] Figure 5 It shows Figure 1 A three-dimensional structural diagram of the headrest and lumbar support structure from another perspective.

[0023] The above figures include the following reference numerals:

[0024] 10. Bracket; 11. Connecting lug; 12. First connecting rod; 13. Second connecting rod; 14. Support plate; 15. Headrest limiting component; 16. Lumbar pillow limiting component;

[0025] 20. Headrest fixing component; 21. Headrest fixing rod; 22. Headrest pushing rod;

[0026] 30. Headrest drive components;

[0027] 40. Lumbar pillow fixing component; 41. Lumbar pillow fixing rod; 42. Lumbar pillow pushing rod;

[0028] 50. Lumbar support drive unit;

[0029] 60. Hinge pin;

[0030] 70. Elastic reset component. Detailed Implementation

[0031] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0034] In this embodiment, as Figures 1 to 5 As shown, the headrest and lumbar support structure includes: a bracket 10, a headrest fixing member 20, a headrest driving member 30, a lumbar support fixing member 40, and a lumbar support driving member 50. The headrest fixing member 20 is oscillatingly mounted on the bracket 10 about a swing center line. The headrest driving member 30 connects the bracket 10 and the headrest fixing member 20, and can drive the headrest fixing member 20 to swing. The lumbar support fixing member 40 is oscillatingly mounted on the bracket 10 about a swing center line. The lumbar support driving member 50 connects the bracket 10 and the lumbar support fixing member 40, and can drive the lumbar support fixing member 40 to swing. In this way, both the headrest fixing member 20 and the lumbar support fixing member 40 swing about the same swing center line on the bracket 10, allowing the installation of the headrest fixing member 20 and the lumbar support fixing member 40 on the bracket 10 to be performed simultaneously, simplifying the seat assembly process. Compared to related technologies where the headrest and lumbar support components swing around different swing center lines, the headrest support 20 and lumbar support 40 in this embodiment can swing around the same swing center line, reducing the number of swing center lines, making the seat structure simpler and more reliable, improving the stability of the headrest and lumbar support, and facilitating subsequent maintenance. Therefore, the technical solution of this embodiment effectively solves the problem of complex seat structures and cumbersome assembly processes in related technologies. Specifically, the first end of the headrest drive component 30 is hinged to the headrest support 20, and the second end of the headrest drive component 30 is hinged to the bracket 10. This makes the connection between the headrest drive component 30 and the headrest support 20 simple and reliable, as well as the connection between the headrest drive component 30 and the bracket 10 simple and reliable. The first end of the lumbar support drive component 50 is hinged to the lumbar support 40, and the second end of the lumbar support drive component 50 is hinged to the bracket 10. This makes the connection between the lumbar support drive component 50 and the lumbar support 40 simple and reliable, as well as the connection between the lumbar support drive component 50 and the bracket 10 simple and reliable.

[0035] In other embodiments, the first end of the headrest drive member 30 is hinged to the headrest fixing member 20, and the second end of the headrest drive member 30 is hinged to the bracket 10. Alternatively, the first end of the lumbar pillow drive member 50 is hinged to the lumbar pillow fixing member 40, and the second end of the lumbar pillow drive member 50 is hinged to the bracket 10.

[0036] like Figures 1 to 5 As shown, the bracket 10 is provided with a connecting lug 11, and the headrest and lumbar support structure also includes a hinge pin 60. The hinge pin 60 passes through the connecting lug 11, the headrest fixing member 20, and the lumbar fixing member 40, and the axis of the hinge pin 60 is the swing center line. The connection lug 11 facilitates the installation of the headrest fixing member 20 and the lumbar fixing member 40, further simplifying the assembly of the seat. By providing the connecting lug 11 and the hinge pin 60, the headrest fixing member 20 and the lumbar fixing member 40 can share the same swing center line, which not only simplifies the structure but also improves assembly efficiency. Applying the technical solution of this embodiment, only one hinge pin 60 needs to be fixed to simultaneously install the headrest fixing member 20 and the lumbar fixing member 40, reducing assembly steps and assembly time.

[0037] In this embodiment, the hinge shaft 60 is the threaded rod of a bolt, and the headrest and lumbar support structure also includes a nut that is threadedly engaged with the threaded rod. The headrest fixing member 20 and the lumbar fixing member 40 are mounted on the threaded rod, and the headrest fixing member 20 and the lumbar fixing member 40 are located between the bolt head and the nut.

[0038] like Figures 1 to 5 As shown, the bracket has a mounting reference surface. The headrest fixing member 20 has a headrest fixing reference surface. The headrest fixing member 20 swings on the bracket 10 to adjust the angle between the headrest fixing reference surface and the mounting reference surface. The angle between the headrest fixing reference surface and the mounting reference surface is A, 0°≤A≤50°. The lumbar pillow fixing member 40 has a lumbar pillow fixing reference surface. The lumbar pillow fixing member 40 swings on the bracket 10 to adjust the angle between the lumbar pillow fixing reference surface and the mounting reference surface. The angle between the lumbar pillow fixing reference surface and the mounting reference surface is B, 0°≤B≤30°. These features allow the headrest fixing member 20 and the lumbar pillow fixing member 40 to swing within a reasonable angle range to better meet the needs of different heights and sitting postures.

[0039] In this embodiment, the mounting reference plane of the bracket is parallel to the vertical direction. When the headrest is fixed to the headrest fixing member 20, the rear surface of the headrest is parallel to the headrest fixing reference plane. When A is 0°, the mounting reference plane is parallel to the headrest fixing reference plane. When the lumbar pillow is fixed to the lumbar pillow fixing member 40, the rear surface of the lumbar pillow is parallel to the lumbar pillow fixing reference plane. When B is 0°, the mounting reference plane is parallel to the lumbar pillow fixing reference plane.

[0040] In this embodiment, the end of the headrest fixing member 20 furthest from the swing center line is the first swing end. The headrest fixing member 20 swings to have a first extreme position and a second extreme position. When the headrest fixing member 20 is in the first extreme position, the first swing end is close to the bracket, and the angle between the headrest fixing reference surface and the mounting reference surface is the smallest, A is 0°. When the headrest fixing member 20 is in the second extreme position, the first swing end is far from the bracket, and the angle between the headrest fixing reference surface and the mounting reference surface is the largest, A is 50°. The angle between the headrest fixing reference surface and the mounting reference surface can be adjusted arbitrarily between 0° and 50°, and the angle A between the headrest fixing reference surface and the mounting reference surface is preferably 0°, 0.38°, 10°, 20°, 30°, 40°, 45.54°, and 50°. In a preferred embodiment, 0.38° ≤ A ≤ 45.54°.

[0041] In this embodiment, the end of the lumbar pillow fixing member 40 furthest from the swing center line is the second swing end. The lumbar pillow fixing member 40 swings to have a third limit position and a fourth limit position. When the lumbar pillow fixing member 40 is in the third limit position, the second swing end is close to the bracket, and the angle between the lumbar pillow fixing reference surface and the mounting reference surface is the smallest, B is 0°. When the lumbar pillow fixing member 40 is in the fourth limit position, the second swing end is far from the bracket, and the angle between the lumbar pillow fixing reference surface and the mounting reference surface is the largest, B is 30°. The angle between the lumbar pillow fixing reference surface and the mounting reference surface can be adjusted arbitrarily between 0° and 30°, and the angle B between the lumbar pillow fixing reference surface and the mounting reference surface is preferably 0°, 2.49°, 5°, 10°, 15°, 19.86°, 20°, 25°, and 30°. In a preferred embodiment, 2.49° ≤ B ≤ 19.86°.

[0042] In other embodiments, the bracket has a mounting reference surface. The headrest fastener 20 has a headrest fixing reference surface, and the headrest fastener 20 swings on the bracket 10 such that the angle between the headrest fixing reference surface and the mounting reference surface is adjustable, the angle between the headrest fixing reference surface and the mounting reference surface being A, 0°≤A≤50°. Alternatively, the lumbar support fastener 40 has a lumbar support fixing reference surface, and the lumbar support fastener 40 swings on the bracket 10 such that the angle between the lumbar support fixing reference surface and the mounting reference surface is adjustable, the angle between the lumbar support fixing reference surface and the mounting reference surface being B, 0°≤B≤30°.

[0043] like Figures 1 to 5As shown, the hinge pin 60 passes through the connecting lug 11, the lower end of the headrest fixing member 20, and the upper end of the lumbar pillow fixing member 40. This arrangement expands the swing range of the headrest fixing member 20 and the lumbar pillow fixing member 40, and makes the headrest and lumbar pillow support structure more compact. The hinge pin 60 passes through the connecting lug 11, the headrest fixing member 20, and the lumbar pillow fixing member 40 in sequence, allowing the operator to connect the headrest fixing member 20 and the lumbar pillow fixing member 40 from one side of the connecting lug 11, making the assembly operation more convenient.

[0044] In other embodiments, the hinge pin 60 passes through the connecting lug 11, the lower end of the headrest fixing member 20, and the upper end of the lumbar pillow fixing member 40. Alternatively, the hinge pin 60 passes sequentially through the connecting lug 11, the headrest fixing member 20, and the lumbar pillow fixing member 40.

[0045] like Figures 1 to 5 As shown, the headrest fixing member 20 includes a headrest fixing rod 21 and a headrest pushing rod 22 connected at an angle to the headrest fixing rod 21. The axis of the headrest pushing rod 22 is offset from the swing center line. The first end of the headrest driving member 30 is hinged to the headrest pushing rod 22. The offset between the headrest pushing rod 22 and the swing center line facilitates the swing of the headrest pushing rod 22 under the drive of the headrest driving member 30, making the swing of the headrest fixing member 20 smoother. The lumbar pillow fixing member 40 includes a lumbar pillow fixing rod 41 and a lumbar pillow pushing rod 42 connected at an angle to the lumbar pillow fixing rod 41. The axis of the lumbar pillow pushing rod 42 is offset from the swing center line. The first end of the lumbar pillow driving member 50 is hinged to the lumbar pillow pushing rod 42. The offset between the lumbar pillow pushing rod 42 and the swing center line facilitates the swing of the lumbar pillow pushing rod 42 under the drive of the lumbar pillow driving member 50, making the swing of the lumbar pillow fixing member 40 smoother.

[0046] In other embodiments, the headrest fixing member 20 includes a headrest fixing rod 21 and a headrest pushing rod 22 connected at an angle to the headrest fixing rod 21. The axis of the headrest pushing rod 22 is offset from the swing center line, and the first end of the headrest driving member 30 is hinged to the headrest pushing rod 22. Alternatively, the lumbar pillow fixing member 40 includes a lumbar pillow fixing rod 41 and a lumbar pillow pushing rod 42 connected at an angle to the lumbar pillow fixing rod 41. The axis of the lumbar pillow pushing rod 42 is offset from the swing center line, and the first end of the lumbar pillow driving member 50 is hinged to the lumbar pillow pushing rod 42.

[0047] In this embodiment, the headrest fixing rod 21 and the headrest pushing rod 22 are fixedly connected. The headrest fixing rod 21 and the headrest pushing rod 22 are integrally formed parts.

[0048] In other embodiments, the headrest fixing rod 21 and the headrest pushing rod 22 are separate structures but fixedly connected.

[0049] like Figures 1 to 5As shown, the lumbar pillow fixing component 40 includes a lumbar pillow fixing rod 41 and a lumbar pillow pushing rod 42 connected at an angle to the lumbar pillow fixing rod 41. The first end of the lumbar pillow driving component 50 is hinged to the lumbar pillow pushing rod 42. The axis of the lumbar pillow pushing rod 42 is parallel to the swing center line. The distance between the axis of the lumbar pillow pushing rod 42 and the swing center line is L, 20cm≤L≤30cm. The design of the lumbar pillow pushing rod 42 being parallel to the swing center line and maintaining a reasonable distance allows for the generation of a larger swing effect with a smaller force when driving the lumbar pillow pushing rod 42 to drive the lumbar pillow fixing rod 41 to swing. This increases the lever arm length, improves driving efficiency, reduces energy consumption and the requirements for the lumbar pillow driving component 50, and expands the compatibility range.

[0050] In this embodiment, the distance L between the axis of the lumbar pillow push rod 42 and the swing center line is preferably 20cm, 22cm, 24cm, 26cm, 28cm or 30cm.

[0051] like Figures 1 to 5 As shown, the bracket 10 includes a first connecting rod 12, a second connecting rod 13, and a support plate 14. The second connecting rod 13 is located below the first connecting rod 12, and the support plate 14 connects the first connecting rod 12 and the second connecting rod 13. The second end of the headrest drive member 30 is hinged to the second connecting rod 13, and the second end of the lumbar support drive member 50 is hinged to the first connecting rod 12. Since the headrest fixing member 20 is located above the lumbar support fixing member 40, the second end of the headrest drive member 30 is hinged to the second connecting rod 13 located below. This layout design makes the distance between the two ends of the headrest drive member 30 longer, which facilitates the arrangement, maintenance, and replacement of the headrest drive member 30, makes the structure more compact, and allows for a more reasonable distribution of driving force, making the headrest adjustment smoother. Since the headrest fixing member 20 is located above the lumbar pillow fixing member 40, the second end of the lumbar pillow driving member 50 is hinged to the first connecting rod 12 located above. This layout design makes the distance between the two ends of the lumbar pillow driving member 50 longer, which facilitates the arrangement, maintenance and replacement of the lumbar pillow driving member 50, makes the structure more compact, and can also distribute the driving force more reasonably, making the lumbar pillow more smooth when adjusted.

[0052] In this embodiment, the connecting lug 11 is disposed on the support piece 14.

[0053] like Figures 1 to 5As shown, both the headrest drive component 30 and the lumbar support drive component 50 are linear drives. The headrest drive component 30 extends to drive the headrest fixing component 20 to swing, and the lumbar support drive component 50 extends to drive the lumbar support fixing component 40 to swing. Linear drives are convenient to install, reliable, and easy to operate. The headrest and lumbar support structure also includes an elastic reset component 70, which is connected between the bracket 10 and the headrest fixing component 20. The elastic reset component 70 applies an elastic reset force to the headrest fixing component 20 to drive the headrest drive component 30 to shorten and cause the headrest fixing component 20 to swing. By using the elastic reset component 70 to connect the bracket 10 and the headrest fixing component 20, the direct involvement of the headrest drive component 30 is reduced, lowering the risk of pinching injury during headrest adjustment. Furthermore, the elastic reset force allows the headrest to return to its initial position, simplifying the reset process of the headrest fixing component 20 during swinging and improving overall safety and comfort. Furthermore, since the driving force of the headrest drive component 30 is greater than the elastic reset force, when the headrest is reset, the elastic reset component 70 drives the drive component to shorten and causes the headrest fixing component 20 to swing, thus avoiding the situation where the reset force is too large due to the headrest drive component 30 bracket 10 driving the headrest fixing component 20 to reset, which could cause injury to the person.

[0054] In this embodiment, the headrest drive member 30 and the lumbar pillow drive member 50 are preferably push rod motors, slider motors, or pneumatic telescopic rods.

[0055] like Figures 1 to 5 As shown, a headrest limiting member 15 is provided on the bracket 10. The headrest limiting member 15 cooperates with the headrest fixing member 20 to limit the swing range of the headrest fixing member 20. Thus, when the headrest fixing member 20 is close to the bracket 10, the headrest limiting member 15 can limit the swing of the headrest fixing member 20, ensuring that the headrest fixing member 20 can reliably remain in its initial position during reset, improving the stability of the headrest fixing member 20 during reset. A lumbar pillow limiting member 16 is provided on the bracket 10. The lumbar pillow limiting member 16 cooperates with the lumbar pillow fixing member 40 to limit the swing range of the lumbar pillow fixing member 40. Thus, when the lumbar pillow fixing member 40 is close to the bracket 10, the lumbar pillow limiting member 16 can limit the swing of the lumbar pillow fixing member 40, ensuring that the lumbar pillow fixing member 40 can reliably remain in its initial position during reset, improving the stability of the lumbar pillow fixing member 40 during reset.

[0056] In this embodiment, the headrest limiting member 15 and the lumbar pillow limiting member 16 are spaced apart on the support plate 14. Both the headrest fixing member 20 and the lumbar pillow fixing member 40 are swayably arranged on the front side of the bracket 10.

[0057] In other embodiments, the bracket 10 is provided with a headrest limiting member 15, which cooperates with the headrest fixing member 20 to limit the swing range of the headrest fixing member 20. Alternatively, the bracket 10 is provided with a lumbar pillow limiting member 16, which cooperates with the lumbar pillow fixing member 40 to limit the swing range of the lumbar pillow fixing member 40.

[0058] This application also provides a backrest, which includes a headrest and lumbar support structure, a headrest, and a lumbar support. The headrest and lumbar support structure is the one described above. The headrest is mounted on a headrest fixing member 20, and the lumbar support is mounted on a lumbar support fixing member 40. Since the aforementioned headrest and lumbar support structure can solve the problems of complex seat structures and cumbersome assembly processes in related technologies, a backrest with this headrest and lumbar support structure can solve the same technical problems.

[0059] This application also provides a seat, which includes a seat cushion and a backrest, wherein the backrest is the aforementioned type. Because the aforementioned backrest can solve the problems of complex seat structures and cumbersome assembly processes in related technologies, a seat with this backrest can solve the same technical problems.

[0060] In this embodiment, the headrest and lumbar support structure of the backrest are fixedly connected to the seat cushion.

[0061] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0062] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0063] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A headrest and lumbar support structure, characterized in that, include: Frame (10); The headrest fixing member (20) is swayably mounted on the bracket (10) about the swing center line; A headrest drive member (30) is connected between the bracket (10) and the headrest fixing member (20), and the headrest drive member (30) can drive the headrest fixing member (20) to swing. The lumbar pillow fixing member (40) is swayably mounted on the bracket (10) around the swing center line; A lumbar pillow drive (50) is connected between the bracket (10) and the lumbar pillow fixing member (40), and the lumbar pillow drive (50) can drive the lumbar pillow fixing member (40) to swing. Wherein, the first end of the headrest drive member (30) is hinged to the headrest fixing member (20), and the second end of the headrest drive member (30) is hinged to the bracket (10); and / or, The first end of the lumbar pillow drive member (50) is hinged to the lumbar pillow fixing member (40), and the second end of the lumbar pillow drive member (50) is hinged to the bracket (10).

2. The headrest and lumbar support structure according to claim 1, characterized in that, The bracket (10) is provided with a connecting lug (11), and the headrest and lumbar support structure also includes a hinge (60). The hinge (60) passes through the connecting lug (11), the headrest fixing member (20) and the lumbar fixing member (40), and the axis of the hinge (60) is the swing center line.

3. The headrest and lumbar support structure according to claim 1, characterized in that, The bracket has a mounting reference surface; The headrest fixing member (20) has a headrest fixing reference surface, and the headrest fixing member (20) swings on the bracket (10) so that the angle between the headrest fixing reference surface and the mounting reference surface is adjustable, the angle between the headrest fixing reference surface and the mounting reference surface is A, 0°≤A≤50°; and / or, The lumbar pillow fixing member (40) has a lumbar pillow fixing reference surface. The lumbar pillow fixing member (40) swings on the bracket (10) so that the angle between the lumbar pillow fixing reference surface and the mounting reference surface is adjustable. The angle between the lumbar pillow fixing reference surface and the mounting reference surface is B, 0°≤B≤30°.

4. The headrest and lumbar support structure according to claim 1, characterized in that, The headrest fixing member (20) includes a headrest fixing rod (21) and a headrest pushing rod (22) connected at an angle to the headrest fixing rod (21). The axis of the headrest pushing rod (22) is offset from the swing center line. The first end of the headrest driving member (30) is hinged to the headrest pushing rod (22); and / or, The lumbar pillow fixing member (40) includes a lumbar pillow fixing rod (41) and a lumbar pillow pushing rod (42) connected at an angle to the lumbar pillow fixing rod (41). The axis of the lumbar pillow pushing rod (42) is offset from the swing center line. The first end of the lumbar pillow driving member (50) is hinged to the lumbar pillow pushing rod (42).

5. The headrest and lumbar support structure according to claim 1, characterized in that, The lumbar pillow fixing member (40) includes a lumbar pillow fixing rod (41) and a lumbar pillow pushing rod (42) connected at an angle to the lumbar pillow fixing rod (41). The first end of the lumbar pillow driving member (50) is hinged to the lumbar pillow pushing rod (42). The axis of the lumbar pillow push rod (42) is set parallel to the swing center line, and the distance between the axis of the lumbar pillow push rod (42) and the swing center line is L, 20cm≤L≤30cm.

6. The headrest and lumbar support structure according to claim 1, characterized in that, The bracket (10) includes a first connecting rod (12), a second connecting rod (13), and a support plate (14). The second connecting rod (13) is located below the first connecting rod (12). The support plate (14) connects the first connecting rod (12) and the second connecting rod (13). The second end of the headrest drive member (30) is hinged to the second connecting rod (13), and the second end of the lumbar pillow drive member (50) is hinged to the first connecting rod (12).

7. The headrest and lumbar support structure according to claim 1, characterized in that, Both the headrest drive (30) and the lumbar drive (50) are linear drive components. The headrest drive (30) extends to drive the headrest fixing (20) to swing, and the lumbar drive (50) extends and retracts to drive the lumbar fixing (40) to swing. The headrest and lumbar support structure also includes an elastic reset member (70), which is connected between the bracket (10) and the headrest fixing member (20). The elastic reset member (70) applies an elastic reset force to the headrest fixing member (20) to drive the headrest driving member (30) to shorten and drive the headrest fixing member (20) to swing.

8. The headrest and lumbar support structure according to claim 1, characterized in that, The bracket (10) is provided with a headrest limiting member (15), which cooperates with the headrest fixing member (20) to limit the swing range of the headrest fixing member (20); and / or, the bracket (10) is provided with a lumbar pillow limiting member (16), which cooperates with the lumbar pillow fixing member (40) to limit the swing range of the lumbar pillow fixing member (40).

9. A backrest, comprising a headrest and lumbar support structure, a headrest, and a lumbar support, characterized in that, The headrest and lumbar support structure is the headrest and lumbar support structure according to any one of claims 1 to 8, wherein the headrest is disposed on the headrest fixing member (20) and the lumbar support is disposed on the lumbar support member (40).

10. A chair, comprising a seat cushion and a backrest, characterized in that, The backrest is the backrest described in claim 9.

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