Support transmission, seat frame and seat

Abstract

The present application discloses a support transmission device, a seat frame and a seat, wherein the support transmission device includes a movable base, a driving mechanism and a leg support mechanism; the driving mechanism includes a rotating component rotatably supported on the movable base; the leg support mechanism is fixedly connected to the rotating component, and the leg support mechanism includes a leg telescopic assembly, and the rotating component drives the leg telescopic assembly to rotate by rotating to drive the leg telescopic assembly to extend or contract. The driver in the driving mechanism is arranged at a position close to the side edge of the movable base to prevent the serpentine spring in the seat bag at the top of the movable base from contacting the driver when it is recessed, thereby improving the user's sitting feeling; the movable base provides support for the rotating component to avoid the situation where the various positions of the rotating component move asynchronously due to the bias of the driver, thereby preventing the rotating component from shaking; the rotating component is fixedly connected to the driving rod, and drives the leg telescopic assembly to move through the driving rod, thereby ensuring that the torque received by the leg telescopic assembly is uniform.

Description

Technical Field

[0001] The present application relates to the technical field of furniture, and in particular to a supporting transmission device, a seat frame and a seat. Background Art

[0002] In a zero-gravity environment, the human body tends to assume a specific posture when it is relaxed and without exerting external force. This posture can minimize the body's need to resist gravity, thereby reducing the body's stress. In the design process of seating, how to put the user in a zero-gravity posture has become a new research direction.

[0003] In order to enable the human body to switch between a zero-gravity posture and a normal sitting posture, some seats are equipped with a motion mechanism to support the legs. However, the motion mechanism often shakes during movement due to asynchronous movement, which reduces the user experience.

[0004] In the prior art, in order to prevent the motion mechanism from shaking, the setting position of the corresponding driving mechanism is limited, which makes the driving mechanism easily affect the sitting feeling of the user. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a support transmission device that can drive the leg support mechanism to move through a stable supporting rotating component to prevent the leg support mechanism from shaking.

[0006] According to the support transmission device of the first aspect embodiment of the present application, the support transmission device includes a movable base, a driving mechanism and a leg support mechanism; the driving mechanism includes a rotating component supported on the movable base, and the rotating component is rotatably arranged on the movable base; the leg support mechanism is fixedly connected to the rotating component, and the leg support mechanism includes a leg telescopic assembly, and the rotating component drives the leg telescopic assembly to rotate by rotating to drive the leg telescopic assembly to extend or contract.

[0007] The support transmission device according to the embodiment of the present application has at least the following beneficial effects: the driver in the driving mechanism is arranged at a position close to the side edge of the movable base, so as to prevent the serpentine spring in the seat bag on the top of the movable base from contacting the driver when it is recessed, thereby improving the user's sitting feel; the driver is used to drive the rotating component to rotate, and the movable base provides support for the rotating component, so as to avoid the situation where the various positions of the rotating component move asynchronously due to the bias of the driver, thereby preventing the rotating component from shaking; the rotating component is fixedly connected to the driving rod, and the leg telescopic assembly is driven to move by the driving rod, thereby ensuring that the torque received by the leg telescopic assembly is uniform, so that the user's legs can be raised and lowered stably, and the user's experience is improved.

[0008] According to some embodiments of the present application, the driving mechanism includes a driver, one end of the driver is hinged to the movable base, the other end of the driver is hinged to the rotating component, and the driver is located close to the side edge of the movable base.

[0009] According to some embodiments of the present application, the driving mechanism further includes a driver mounting component, which is fixedly disposed on the rotating component and extends outward from the rotating component, and the driver mounting component is hinged to the driver.

[0010] According to some embodiments of the present application, the movable base includes side frames arranged on opposite sides and a transverse frame connected between the side frames, both ends of the rotating component are rotatably connected to the side frames, and the end of the driver is hinged to the transverse frame.

[0011] According to some embodiments of the present application, a first socket is provided at the end of the rotating component, and the side frame is provided with a first pillar extending toward the rotating component, and the first pillar is inserted into the first socket to form a rotational connection.

[0012] According to some embodiments of the present application, a second pillar extending outward is provided at the end of the rotating component, and a second plug hole is provided on the side frame, and the second pillar is inserted into the second plug hole to form a rotational connection.

[0013] According to some embodiments of the present application, the position where the rotating component is connected to the side frame is close to the end of the side frame.

[0014] According to some embodiments of the present application, the leg support mechanism further includes a driving rod, the driving rod is fixedly connected to the rotating component, and the driving rod is hinged to the leg telescopic assembly.

[0015] According to some embodiments of the present application, the leg telescopic assembly includes a first telescopic unit, which is hinged to the driving rod and the movable base, and the driving rod drives the first telescopic unit to extend or contract by rotating.

[0016] According to some embodiments of the present application, the first telescopic unit includes a first leg link, a second leg link, a third leg link and a leg link mounting component, the first leg link is hinged to the movable base, the third leg link is hinged between the driving rod and the leg link mounting component, and the second leg link is hinged to the leg link mounting component, the driving rod and the first leg link.

[0017] According to some embodiments of the present application, the first leg link and the leg link mounting component are hinged at both ends of the second leg link, and the driving rod is hinged at the middle of the second leg link; the movable base and the third leg link are hinged at both ends of the driving rod, and the second leg link is hinged at the middle of the driving rod.

[0018] According to the seat frame of the second aspect embodiment of the present application, the seat frame includes a fixed base, a movable base, a driving mechanism and a leg support mechanism; a guide assembly is provided between the fixed base and the movable base, and the movable base is slidably arranged on the fixed base through the guide assembly; the driving mechanism includes a rotating component and a driver, the rotating component is a rotating rod rotatably supported on the movable base, and the driver is hinged to the rotating component through a driver mounting component; the leg support mechanism includes a driving rod fixedly connected to the rotating component and a leg telescopic assembly hinged to the driving rod, and the rotating component and the driving rod drive the leg telescopic assembly to extend or contract by rotation.

[0019] The seat frame according to the embodiment of the present application has at least the following beneficial effects: the seat frame limits the relative movement between the movable base and the fixed base through the guide assembly, ensuring that the relative movement between the movable base and the fixed base can prompt the user to switch to a zero-gravity posture, thereby enhancing the user's zero-gravity experience.

[0020] According to some embodiments of the present application, the guide assembly includes a first guide structure and a second guide structure disposed on the fixed base, and the inclination angle of the first guide structure relative to the horizontal direction is -5° to 5°.

[0021] According to some embodiments of the present application, the second guiding structure includes a first inclined portion and a second inclined portion, the inclination angle of the first inclined portion relative to the horizontal direction is 15° to 33°, and the inclination angle of the second inclined portion relative to the horizontal direction is 5° to 18°.

[0022] According to some embodiments of the present application, the seat frame further includes a connecting mechanism, which is rotatably disposed on the movable base and is hinged between the rotating component and the fixed base.

[0023] According to some embodiments of the present application, the connecting mechanism includes a first link, a second link and a third link, the second link includes a first hinged portion hinged to the first link, a second hinged portion hinged to the third link, and a rotating connection portion rotatably connected to a movable base, the rotating connection portion is located between the first hinged portion and the second hinged portion, the first link is hinged to the driving rod, and the third link is hinged to the fixed base.

[0024] According to some embodiments of the present application, a ratio of a distance between the rotating connection portion and the first hinge portion to a distance between the rotating connection portion and the second hinge portion is 1:1 to 1:3.

[0025] According to some embodiments of the present application, the seat frame also includes a back support mechanism, which includes a first back link, a second back link, a third back link and a back link mounting component, the first back link and the second back link are both hinged between the back link mounting component and the fixed base, the third back link is hinged between the first back link and the movable base, the side edge of the first back link is provided with an extension portion extending outward, and the end of the third back link is hinged to the extension portion.

[0026] According to some embodiments of the present application, the back connecting rod mounting component is fixedly connected to a backrest mounting plate, and when the first sliding component slides to the end of the first guide structure and the second sliding component slides to the end of the second inclined portion, the movable base is at an angle of 121° to 135° to the backrest mounting plate.

[0027] According to the sitting furniture of the third aspect embodiment of the present application, the sitting furniture includes the above-mentioned sitting frame.

[0028] The seat according to the embodiment of the present application has at least the following beneficial effects: in the seat frame according to the embodiment of the second aspect of the present application, the driver in the driving mechanism is arranged at a position close to the side edge of the movable base, so as to prevent the serpentine spring in the seat bag on the top of the movable base from contacting the driver when it is recessed, thereby improving the user's sitting feeling; the driver is used to drive the rotating component to rotate, and the movable base provides support for the rotating component, so as to avoid the situation where the various positions of the rotating component move asynchronously due to the bias of the driver, thereby preventing the rotating component from shaking; the rotating component is fixedly connected to the driving rod, and the driving rod drives the leg telescopic assembly to move, so as to ensure that the torque received by the leg telescopic assembly is uniform, so that the user's legs can be stably raised and lowered, thereby improving the user's usage experience; the seat frame limits the relative movement between the movable base and the fixed base through the guide assembly, so as to ensure that the relative movement between the movable base and the fixed base can prompt the user to switch to a zero-gravity posture, thereby improving the user's zero-gravity feeling.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present application is further illustrated below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0031] Figure 1 It is a schematic diagram of the structure of the seat frame of the embodiment of the present application in a normal sitting posture;

[0032] Figure 2 is a schematic diagram of the structure of the seat frame of the embodiment of the present application with the support cover removed in a normal sitting position;

[0033] Figure 3 It is a structural schematic diagram of the seat frame of the embodiment of the present application in a zero-gravity posture without the support cover plate;

[0034] Figure 4 It is a cross-sectional view of the connection mode between the movable base and the rotating component in the seat frame of the embodiment of the present application;

[0035] Figure 5 It is a cross-sectional view of the connection mode between the movable base and the rotating component in the seat frame of the embodiment of the present application;

[0036] Figure 6 It is a structural schematic diagram of a leg support mechanism in a seat frame of an embodiment of the present application;

[0037] Figure 7 It is a structural schematic diagram of a leg support mechanism in a seat frame of an embodiment of the present application;

[0038] Figure 8 This is a front view of the seat frame of the embodiment of the present application in a normal sitting position;

[0039] Fig. 9 It is a front view of the seat frame of the embodiment of the present application in a weightless posture;

[0040] Fig.10 It is a front view of a fixed base in a seat frame of an embodiment of the present application;

[0041] Fig.11 is a side view of the seat frame of the embodiment of the present application in a normal sitting position;

[0042] Fig.12 The seat frame in the embodiment of the present application Figure 6 AA view;

[0043] Fig.13 is a side view of the seat frame according to the embodiment of the present application in a weightless posture;

[0044] Fig.14 The seat frame in the embodiment of the present application Figure 8 BB view;

[0045] Fig.15 is a front view of the connection mechanism of the seat frame of the embodiment of the present application;

[0046] Fig.16 It is a structural schematic diagram of the back support mechanism in the seat frame of the embodiment of the present application;

[0047] Fig.17 It is a schematic diagram of the structure of the back support mechanism in the seat frame of the embodiment of the present application.

[0048] Reference numerals:

[0049] Movable base 100; side frame 101; first support column 1011; second plug hole 1012; horizontal frame 102; support cover plate 103;

[0050] Driving mechanism 200; rotating component 201; first plug hole 2011; second support 2012; driver 202; driver mounting component 203;

[0051] Leg support mechanism 300; leg extension assembly 301; drive rod 302; first leg link 303; second leg link 304; third leg link 305; leg link mounting component 306; fourth leg link 307; fifth leg link 308;

[0052] Fixed base 400; first groove 401; second groove 402; first inclined portion 4021; transition portion 4022; second inclined portion 4023; first sliding component 403; second sliding component 404;

[0053] Connecting mechanism 500; first connecting rod 501; second connecting rod 502; first hinge part 5021; second hinge part 5022; rotating connecting part 5023; third connecting rod 503;

[0054] Back support mechanism 600 ; first back link 601 ; extension 6011 ; second back link 602 ; third back link 603 ; back link mounting component 604 ; backrest mounting plate 605 . DETAILED DESCRIPTION

[0055] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0056] In the description of the present application, it should be understood that the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0057] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0058] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] In the description of the present application, if there is a description with reference to the terms "one embodiment", "some embodiments", "an embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", "some examples", etc., it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0060] At present, all the seats that can switch between the normal sitting posture and the weightless posture are equipped with a leg support mechanism. In the normal sitting posture, the user's legs can hang down freely, and in the weightless posture, the user's legs will gradually rise with the rise of the leg support mechanism. Among them, this type of seat is equipped with a driver and a driving structure. The driver located at the bottom of the seat bag can drive the driving structure to move, and the driving structure will drive the leg support mechanism to move during the movement.

[0061] Furthermore, the driver is often connected to the middle of the driving structure, and the middle of the driving structure corresponds to the middle of the seat. However, the seat usually includes a plurality of serpentine springs, and it is understandable that the deformation capacity of the end portion of each serpentine spring connected to the edge of the seat is relatively weak, and the deformation capacity of the middle portion of each serpentine spring is relatively strong, and the driver corresponds to the position where the serpentine spring has relatively strong deformation capacity.

[0062] When the user sits on the top of the seat bag, the middle part of the serpentine spring is more likely to sink, causing the middle part of the serpentine spring to contact the driver, thereby affecting the user's sitting feeling.

[0063] In order to prevent the serpentine spring in the seat from contacting the driver, the driver can be offset, that is, deviated from the middle of the drive structure. However, the drive structure in the current seat is only connected to the leg support mechanism, and the drive structure is in a state of lack of support; or, the drive structure only relies on a relatively thin transmission member to connect the leg support mechanism, resulting in unstable force transmission. When the driver is offset, the above two situations are likely to cause asynchronous movement of various positions of the drive structure and unbalanced torque at various positions of the drive structure, causing the drive structure to shake.

[0064] In addition, when the seat switches from a normal sitting position to a weightless position, the drive structure drives multiple leg support mechanisms to move and lift the user's legs to a certain height. At this time, if the movement of each position of the drive structure is not synchronized and the torque is not balanced, it is easy to cause the torque of each leg support mechanism to be unbalanced, which further leads to problems such as shaking of the leg support mechanism, affecting the user's experience.

[0065] like Figure 1 As shown, an embodiment of the present application provides a support transmission device, which includes a movable base 100, a drive mechanism 200 and a leg support mechanism 300. In the process of switching between the normal sitting posture and the weightless posture, the drive mechanism 200 can always be stably supported to avoid the situation where the drive mechanism 200 itself moves asynchronously at various positions. The drive mechanism 200 includes a rotating part 201 and a driver 202. When the drive mechanism 200 is stably supported, the driver 202 is arranged at any position of the rotating part 201 to ensure the torque balance of the rotating part 201.

[0066] At the same time, the rotating component 201 in the driving mechanism 200 is fixedly connected to the corresponding components in the leg support mechanisms 300, thereby directly driving the leg support mechanisms 300 to move, without indirectly driving the movement of the leg support mechanisms 300 through additional transmission components. Therefore, when the driving mechanism 200 is stably supported, the support transmission device of the present application can prevent the leg support mechanisms 300 from moving asynchronously, ensure the torque balance of the leg support mechanisms 300, and thus avoid abnormal phenomena such as shaking of the leg support mechanisms 300.

[0067] like Figure 2 and Figure 3 As shown, in some examples, the movable base 100 adopts a hollow frame structure and is used to install the seat bag. The movable base 100 includes a side frame 101 and a cross frame 102, both of which adopt a rod-shaped structure. Two side frames 101 are provided, and the side frames 101 are located at opposite sides of the movable base 100. The cross frame 102 is connected between the two side frames 101, and the cross frame 102 is located in the movable base 100 away from the leg support mechanism 300.

[0068] Furthermore, the driving mechanism 200 includes a rotating component 201, and the rotating component 201 adopts a rod-shaped structure. The rotating component 201 is supported by the movable base 100 and is rotatably connected with the movable base 100, that is, the support of the rotating component 201 by the movable base 100 will not affect the free rotation of the rotating component 201. Among them, the material selection of the movable base 100 and the rotating component 201 needs to have a certain strength, which can prevent the rotating component 201 from bending, twisting and other abnormal movements during the movement, and further ensure that the torque of the rotating component 201 is balanced at various locations during the rotation process.

[0069] Specifically, the rotating component 201 is formed as a rotating rod and is located between the two side frames 101. The two ends of the rotating component 201 are respectively rotatably connected to the two side frames 101. It is worth noting that the rotatable connection between the rotating component 201 and the side frames 101 will not affect the supporting function of the side frames 101 for the rotating component 201. Among them, the extension directions of the two side frames 101 are parallel to each other, and the extension directions of the transverse frame 102 and the rotating component 201 are perpendicular to the side frames 101, so the transverse frame 102, the two side frames 101 and the rotating component 201 form a closed rectangular structure.

[0070] Meanwhile, the leg support mechanism 300 includes a leg extension assembly 301 . It is understandable that, in order to ensure that the user's legs can be supported evenly, two leg support mechanisms 300 are provided. Furthermore, the two leg support mechanisms 300 are located at opposite sides of the movable base 100 .

[0071] In addition, the two leg support mechanisms 300 are both fixedly connected to the rotating component 201 and form a whole body that moves together with the rotating component 201. At the same time, the leg telescopic assembly 301 is formed as a connecting rod mechanism, and the rotating component 201 drives the leg telescopic assembly 301 to rotate by rotating, thereby driving the leg telescopic assembly 301 to extend or contract.

[0072] During the movement of the leg telescopic assembly 301, it can be retracted to the bottom of the movable base 100, and can also be extended to the outside of the movable base 100. It can be understood that when the leg telescopic assembly 301 is retracted to the bottom of the movable base 100, the support transmission device of the present application is adapted to the user's normal sitting posture; when the leg telescopic assembly 301 is extended to the outside of the movable base 100, the support transmission device of the present application is adapted to the user's weightless posture.

[0073] Specifically, a support cover plate 103 is provided on the outer side of the rotating component 201, and the support cover plate 103 is connected to each side frame 101 and extends to the top of the rotating component 201. On the one hand, the support cover plate 103 can protect the rotating component 201; on the other hand, the support cover plate 103 can prevent the rotating component 201 from contacting the seat bag on the top of the movable base 100, prevent the seat bag from interfering with the rotation of the rotating component 201, and also prevent the rotating component 201 from wearing the seat bag, thereby improving the user experience.

[0074] In some examples, the driving mechanism 200 includes a driver 202, and the driver 202 can output a linear motion. Specifically, the driver 202 can be in the form of an electric push rod, a cylinder, a hydraulic cylinder, or the like.

[0075] The driver 202 has a certain length, the fixed end of the driver 202 is hinged to the horizontal frame 102, and the output end of the driver 202 is hinged to the side wall of the rotating component 201. Alternatively, the output end of the driver 202 is hinged to the horizontal frame 102, and the fixed end of the driver 202 is hinged to the side wall of the rotating component 201.

[0076] Furthermore, the driving mechanism 200 further includes a driver mounting component 203, which is fixedly mounted on the side wall of the rotating component 201 and extends a certain distance to the outside of the rotating component 201. The first end of the driver 202 is hinged to the horizontal frame 102, and the second end of the driver 202 is hinged to the rotating component 201 through the driver mounting component 203.

[0077] Specifically, the driver installation component 203 adopts a rod-shaped structure and is provided with a reaming hole and a hinge shaft for hingedly connecting the driver 202 . The driver installation component 203 is hingedly connected to the driver 202 via the reaming hole and the hinge shaft.

[0078] It can be understood that the driver mounting component 203 is used to receive the driving force transmitted by the driver 202 and serve as a lever arm for the rotation of the rotating component 201, thereby converting the thrust output by the driver 202 into a torque for the rotation of the rotating component 201.

[0079] When the length of the driver 202 increases, the driver 202 pushes the driver mounting component 203 to rotate toward the leg support mechanism 300, thereby driving the rotating component 201 to rotate. The rotating component 201 drives the leg telescopic assembly 301 to gradually extend to the outside of the movable base 100, so that the user gradually enters a weightless posture.

[0080] When the length of the driver 202 decreases, the driver 202 pulls the driver mounting component 203 to rotate away from the leg support mechanism 300, thereby driving the rotating component 201 to rotate. The rotating component 201 drives the leg telescopic assembly 301 to gradually shrink to the bottom of the movable base 100, so that the user gradually takes a normal sitting position.

[0081] In some examples, in the current existing seats, the driving structure is directly set on the leg telescopic assembly 301, and the leg telescopic assembly 301 is connected to the side frame 102 in a hinged manner, resulting in a lack of support for the driving structure. At the same time, the driver in the seat is connected to the symmetrical center position of the driving structure to ensure that the torque transmitted at both ends of the driving structure is balanced.

[0082] However, the driver 202 located at the symmetry center of the driving structure is also located in the middle of the base, and the base is also placed with a seat bag that supports the user's buttocks. Under the action of the user's gravity, the serpentine spring in the seat bag will inevitably be significantly concave, and the concave phenomenon is most obvious in the middle of the serpentine spring, which can easily cause the serpentine spring to contact the driver 202, affecting the user's sitting feeling.

[0083] Since the rotating component 201 of the present application is always firmly supported on the movable base 100, the driver 202 connected to any position of the side wall of the rotating component 201 can ensure the torque balance at both ends of the rotating component 201, avoid the shaking of the rotating component 201, and improve the user experience.

[0084] Optionally, since the setting position of the driver 202 of the present application can be arbitrarily selected, it can be set at a position close to the side frame 101 to prevent the sunken serpentine spring in the seat from contacting the driver 202, thereby further improving the user experience.

[0085] like Figure 4As shown, in some examples, a first plug hole 2011 is provided at the end of the rotating component 201, and the extension direction of the first plug hole 2011 is the axial direction of the rotating component 201. At the same time, a first pillar is provided on the side of the side frame 101 facing the rotating component 201, and the extension direction of the first pillar 1011 is also the axial direction of the rotating component 201. It can be understood that the shape of the first plug hole 2011 matches the shape of the first pillar 1011, which facilitates the insertion of the first pillar 1011. When the first pillar 1011 is inserted into the first plug hole 2011, the rotating component 201 and the side frame 101 form a rotational connection, and the first pillar 1011 can provide support for the rotating component 201.

[0086] It is understandable that both ends of the rotating component 201 are provided with first plug holes 2011 , and both side frames 101 are provided with first pillars 1011 , so as to ensure that both ends of the rotating component 201 are rotatably supported on the movable base 100 in a plug-in manner.

[0087] Specifically, the rotating component 201 includes a connecting rod, a first support 1011 and a driver mounting component 203. The first socket 2011 is provided on the connecting rod. The first support 1011 is threadedly connected to the first socket 2011. When the first support 1011 is threadedly connected to the first socket 2011, the first support 1011 can rotate relative to the fixed base 400. Figure 4 This structure ensures that the rotating component 201 is detachable and replaceable, and this structure makes the first pillar 1011 a rotating vulnerable part and the fixed base 400 a rotating direct load-bearing part, and the fixed base 400 as a rotating direct load-bearing part can increase the anti-deformation capacity of the load-bearing part.

[0088] like Figure 5 As shown, in some examples, the end of the rotating component 201 is provided with a second pillar 2012, the extension direction of the second pillar 2012 is the axial direction of the rotating component 201, and the side frame 101 is provided with a second plug hole 1012, the extension direction of the second plug hole 1012 is also the axial direction of the rotating component 201. The shape of the second plug hole 1012 matches the shape of the second pillar 2012, which facilitates the insertion of the second pillar 2012. When the second pillar 2012 is inserted into the second plug hole 1012, the rotating component 201 and the side frame 101 form a rotational connection, and the second pillar 2012 cooperates with the second plug hole 1012 to provide support for the rotating component 201.

[0089] It is understandable that both ends of the rotating component 201 are provided with second pillars 2012, and both side frames 101 are provided with second plug holes 1012, ensuring that both ends of the rotating component 201 are rotatably supported on the movable base 100 in a plug-in manner.

[0090] Specifically, the rotating component 201 includes a connecting rod, a second support 2012 and a driver mounting component 203. The second support 2012 is threadedly connected to the second plug hole 1012. When the second support 2012 is threadedly connected to the second plug hole 1012, the second support 2012 can rotate relative to the connecting rod. This structure ensures that the rotating component 201 is detachable and replaceable. This structure makes the second support 2012 a rotating vulnerable part and the connecting rod a rotating direct load-bearing part. The connecting rod as a rotating direct load-bearing part can reduce the replacement cost of the rotating component 201.

[0091] The cylindrical structures are arranged to correspond to each other, so as to ensure that the second support column 2012 can rotate freely in the second insertion hole 1012 .

[0092] In some examples, according to the stroke of the driver 202 , the position where the rotating component 201 is rotatably connected to the side frame 101 is close to the end of the side frame 101 , that is, the rotating component 201 is at the edge of the movable base 100 , thereby meeting the installation space requirement of the driver 202 .

[0093] like Figure 6 and Figure 7 As shown, in some examples, the leg support mechanism 300 further includes a driving rod 302, and the driving rod 302 is used to drive the leg telescopic assembly 301 in the leg support mechanism 300 to perform telescopic movement.

[0094] The driving rod 302 is fixedly connected to the rotating part 201 . Since two leg support mechanisms 300 need to be provided, corresponding to the left leg and the right leg of the user, two driving rods 302 are also provided accordingly. Specifically, the two driving rods 302 are respectively located at the two ends of the rotating part 201 .

[0095] When the driver 202 drives the rotating component 201 to rotate, since the driving rod 302 is fixedly connected to the rotating component 201, the driving rod 302 also rotates with the same amplitude, thereby driving the leg telescopic components 301 in the two leg support mechanisms 300 to perform telescopic movements.

[0096] In some examples, the leg telescopic assembly 301 includes a first telescopic unit. On one hand, the first telescopic unit is hinged to the driving rod 302, and on the other hand, the first telescopic unit is hinged to the movable base 100. The rotation of the driving rod 302 can drive the first telescopic unit to perform the first stage telescopic process of the leg telescopic assembly 301.

[0097] In some examples, the first telescopic unit includes a first leg link 303 , a second leg link 304 , a third leg link 305 , and a leg link mounting component 306 .

[0098] The first end of the first leg link 303 is hinged to the movable base 100, and the second end of the first leg link 303 is hinged to the second leg link 304. Specifically, the first end of the first leg link 303 is hinged to the side frame 101. On the side frame 101, the hinge position of the first end of the first leg link 303 is at a certain distance from the position of the rotating component 201.

[0099] Further, the first end of the second leg link 304 is hinged to the second end of the first leg link 303, and the second end of the second leg link 304 is hinged to the leg link mounting component 306. At the same time, the second leg link 304 is also hinged to the driving rod 302, so that the side frame 101, the first leg link 303, the second leg link 304 and the driving rod 302 form a closed four-bar mechanism, which is conducive to ensuring the telescopic movement stability of the first telescopic unit.

[0100] In addition, the first end of the third leg link 305 is hinged to the end of the driving rod 302, and the third leg link 305 is also hinged to the leg link mounting component 306, that is, the second leg link 304 and the third leg link 305 are both hinged to the leg link mounting component 306, so that the driving rod 302, the second leg link 304, the third leg link 305 and the leg link mounting component 306 form a closed four-bar mechanism, further ensuring the telescopic movement stability of the first telescopic unit.

[0101] It is worth noting that the first leg link 303 and the leg link mounting component 306 are hinged at both ends of the second leg link 304, and the driving rod 302 is hinged at the middle of the second leg link 304. At the same time, the side frame 101 and the third leg link 305 are hinged at both ends of the driving rod 302, and the second leg link 304 is hinged at the middle of the driving rod 302. That is, the driving rod 302 and the second leg link 304 are hinged at the middle, ensuring that the four-bar mechanism formed by the side frame 101, the first leg link 303, the second leg link 304 and the driving rod 302 and the four-bar mechanism formed by the moving rod 302, the second leg link 304, the third leg link 305 and the leg link mounting component 306 can be linked.

[0102] When the driving rod 302 rotates in the direction close to the leg support mechanism 300, under the mutual restriction of the first leg link 303, the second leg link 304, the third leg link 305 and the leg link mounting component 306, the third leg link 305 provides an upward driving force for the leg link mounting component 306, and the second leg link 304 provides a downward driving force for the leg link mounting component 306, and the combined effect of the upward pushing force and the downward pressure will drive the leg link mounting component 306 to rotate. At the same time, the angle between the driving rod 302 and the third leg link 305 increases, and the angle between the first leg link 303 and the second leg link 304 also increases, realizing the first stage telescopic process of the leg telescopic assembly 301.

[0103] In some examples, the leg telescopic assembly further includes a second telescopic unit, which is hinged to the leg link mounting component 306 on one hand, and hinged to the third leg link 305 on the other hand. The driving rod 302 drives the first telescopic unit to perform a telescopic process, and the first telescopic unit further drives the second telescopic unit to perform a telescopic process, thereby realizing the second-stage telescopic process of the leg telescopic assembly 301.

[0104] In some examples, the second telescopic unit includes a fourth leg link 307 and a fifth leg link 308. The first end of the fourth leg link 307 is hinged to the leg link mounting component 306 to form a structural connection between the second telescopic unit and the first telescopic unit, and the second end of the fourth leg link 307 is hinged to the fifth leg link 308.

[0105] At the same time, the first end of the fifth leg connecting rod 308 is hinged to the third leg connecting rod 305 , further forming a structural connection between the second telescopic unit and the first telescopic unit, and the fifth leg connecting rod 308 is also hinged to the fourth leg connecting rod 307 .

[0106] Therefore, the leg link mounting component 306, the fourth leg link 307, the fifth leg link 308 and the third leg link 305 also form a four-bar mechanism, which facilitates the linkage between the first telescopic unit and the second telescopic unit.

[0107] Specifically, the driving rod 302 and the fifth leg link 308 are hinged at both ends of the third leg link 305, and the leg link mounting component 306 is hinged at the middle of the third leg link 305, so that the third leg link 305 can apply driving force to the fifth leg link 308 during rotation.

[0108] In some examples, the leg link mounting component 306 is roughly a triangular structure, and the hinge positions of the second leg link 304, the third leg link 305 and the fourth leg link 307 on the leg link mounting component 306 are respectively close to the three angular positions of the leg link mounting component 306, ensuring that the hinge positions of the second leg link 304, the third leg link 305 and the fourth leg link 307 on the leg link mounting component 306 are separated from each other, which facilitates the second leg link 304, the third leg link 305, the driving rod 302 and the leg link mounting component 306 to form a four-bar mechanism, and also facilitates the third leg link 305, the fourth leg link 307, the fifth leg link 308 and the leg link mounting component 306 to form a four-bar mechanism.

[0109] In addition, the fifth leg link 308 extends in a direction away from the supporting transmission device to support the user's calf.

[0110] During the extension process of the leg telescopic assembly 301, the driving rod 302 rotates in the direction close to the leg telescopic assembly 301, thereby driving the first leg link 303, the second leg link 304, and the third leg link 305 to rotate, and the angle between the driving rod 302 and the third leg link 305 increases, and the angle between the first leg link 303 and the second leg link 304 also increases, ensuring that the second leg link 304 applies a downward driving force to the leg link mounting component 306, and also ensuring that the third leg link 305 applies an upward driving force to the leg link mounting component 306. Under the action of the downward pressure and the upward force, the leg link mounting component 306 rotates to complete the first stage extension process of the first telescopic unit. At the same time, the third leg link 305 applies a downward driving force to the fifth leg link 308, and the fourth leg link applies an upward driving force to the fifth leg link 308. Under the combined action of the downward pressure and the upward force, the angle between the fifth leg link 308 and the third leg link 305 gradually increases, thereby completing the extension process of the second telescopic unit.

[0111] It can be understood that the contraction process and the extension process of the first telescopic unit and the second telescopic unit are opposite to each other, which will not be described in detail here.

[0112] like Figure 1 As shown, an embodiment of the present application provides a seat frame, which includes a fixed base 400, a movable base 100, a driving mechanism 200 and a leg supporting mechanism 300.

[0113] The fixed base 400 is in a constant position and is used to carry the movable base 100. The movable base 100 is used to support the user's torso. Specifically, the movable base is used to install a seat bag, and the user's buttocks contact the seat bag to ensure the user's comfort. At the same time, the fixed base 400 is slidably connected to the movable base 100, and a guide component is provided between the fixed base 400 and the movable base 100.

[0114] It is understandable that when the movable base 100 slides, the relative position between the movable base 100 and the fixed base 400 changes. When the movable base 100 is within the range of the fixed base 400 by sliding, the user on the movable base 100 is in a normal sitting position; when the movable base 100 moves out of the range of the fixed base 400 by sliding, the user on the movable base 100 is in a weightless sitting position.

[0115] Furthermore, the driving mechanism 200 includes a rotating component 201 and a driver 202. The rotating component 201 is rotatably supported on the movable base 100. Since the movable base 100 is made of high-strength material, when the rotating component 201 rotates, the rotating component 201 can be prevented from shaking, and the torque at each position of the rotating component 201 can be ensured to be uniform. One end of the driver 202 is hinged to the movable base 100, and the other end is hinged to the rotating component 201. Therefore, the driver 202 can drive the rotating component 201 to rotate by changing its length.

[0116] Specifically, a driver mounting component 203 is fixedly provided on the side wall of the rotating component 201, and the rotating component 201 includes a connecting rod, and the driver mounting component 203 is arranged on the connecting rod. The first pillar 1011 or the second pillar 2012 is detachably arranged on the connecting rod. The driver mounting component 203 extends a certain distance to the outside of the rotating component 201, and the driver 202 is hinged to the driver mounting component 203, so as to convert the thrust or pulling force applied by the driver 202 into a torque for driving the rotating component 201.

[0117] Meanwhile, the leg support mechanism 300 includes a driving rod 302 and a leg telescopic assembly 301, and the leg telescopic assembly 301 is hinged to the driving rod 302. Specifically, two leg support mechanisms 300 are provided, which are respectively located at opposite sides of the movable base 100, corresponding to the user's legs.

[0118] The rotating component 201 and the driving rod 302 form a whole, namely, a rotating assembly. The rotating assembly drives the leg telescopic assembly 301 to telescope by rotating. Since the rotating component 201 is stably supported by the movable base 100, the rotating assembly is also stably supported. The improved stability of the rotating assembly can not only ensure that the leg telescopic assembly 301 can move smoothly, but also ensure that the torque of the two leg telescopic assemblies 301 is uniform, thereby improving the user experience.

[0119] At this time, the driver 202 can be set at any position of the rotating part 201 to ensure the consistency of the movement of different positions of the rotating part 201, thereby ensuring the torque balance of different positions of the rotating part 201, and avoiding the shaking of the seat frame of the present application. Therefore, the driver 202 can be set at a position deviated from the center of the movable base 100. When the serpentine spring of the seat bag on the top of the movable base 100 sinks, the driver 202 deviated from the center of the movable base 100 can avoid contact with the serpentine spring, thereby improving the user's sitting feeling.

[0120] It is worth noting that the movement of the leg retractable assembly 301 is linked to the movement of the movable base 100. When the movable base 100 is within the range of the fixed base 400 by sliding, the leg retractable assembly 301 is retracted to the bottom of the movable base 100, and the user on the movable base 100 is in a normal sitting position; when the movable base 100 moves out of the range of the fixed base 400 by sliding, the leg retractable assembly 301 extends to the outside of the movable base 100 to support the user's legs, and the user on the movable base 100 is in a weightless sitting position.

[0121] In some examples, the rotating component 201 and the driving rod 302 are fixedly connected, the rotating component 201 is supported on the movable base 100 and is rotatably connected to the movable base 100, and the driving rod 302 is hinged to the leg telescopic assembly 301, thereby driving the leg telescopic assembly 301 to contract or extend.

[0122] Specifically, the rotating component 201 and the movable base 100 can be connected in a plug-in manner, and under the premise of satisfying the rotational connection between the rotating component 201 and the movable base 100 , the movable base 100 can provide sufficient support for the rotating component 201 .

[0123] In some examples, such as Figure 8 and Fig. 9 As shown, the guide assembly includes a first guide structure and a second guide structure, which are arranged on a fixed base 400 and can be in the form of a groove, a slide rail, etc. At the same time, the movable base 100 is provided with a first sliding component 403 and a second sliding component 404.

[0124] The first sliding component 403 corresponds to the first guide structure, and the second sliding component 404 corresponds to the second guide structure. Specifically, the first guide structure and the second guide structure are arranged in parallel on both opposite sides of the fixed base 400, and the first sliding component 403 and the second sliding component 404 are arranged in parallel on both opposite sides of the movable base 100.

[0125] It can be understood that the first sliding component 403 slides along the first guide structure, and the second sliding component 404 slides along the second guide structure, and the first guide structure and the second guide structure can limit the movement direction of the movable base 100 relative to the fixed base 400.

[0126] In addition, the second guide structure gradually increases in height in the direction away from the first guide structure, and when the movable base 100 moves out of the range of the fixed base 400 under the limiting action of the guide assembly, the height of the movable base 100 increases, and as the height of the movable base 100 slowly increases, the user on the movable base 100 gradually enters a weightless posture. When the movable base 100 moves into the range of the fixed base 400 under the limiting action of the guide assembly, as the height of the movable base 100 decreases, the user on the movable base 100 recovers from the weightless posture to a normal sitting posture.

[0127] In some examples, such as Fig.10 As shown, the first guide structure is formed as a first groove 401, and the second guide structure is formed as a second groove 402. Accordingly, the first sliding component 403 and the second sliding component 404 are both formed as sliders.

[0128] The first groove 401 extends approximately horizontally, and when the first sliding component 403 slides along the first groove 401, the height of the movable base 100 at the position where the first sliding component 403 is set remains unchanged. The height of the second groove 402 gradually increases, and when the second sliding component 404 slides along the second groove 402, the height of the movable base 100 at the position where the second sliding component 404 is set gradually increases or decreases.

[0129] It can be understood that the sliding process of the first sliding component 403 in the first groove 401 and the sliding process of the second sliding component 404 in the second groove 402 are performed simultaneously. The height of the movable base 100 at the position where the first sliding component 403 is set is slightly changed, while the height of the movable base 100 at the position where the second sliding component 404 is set is greatly changed. Therefore, under the comprehensive limiting effect of the first groove 401 and the second groove 402, the movable base 100 can change its angle, so that the user can switch between the zero-weight posture and the normal sitting posture.

[0130] Specifically, corresponding cushion layers may be provided on the inner walls of the first groove 401 and the second groove 402 , and the first groove 401 and the second groove 402 are in contact with the first sliding component 403 and the second sliding component 404 through the cushion layers, thereby improving the smoothness of movement of the first sliding component 403 and the second sliding component 404 .

[0131] Furthermore, the second groove 402 includes a first inclined portion 4021, a transition portion 4022 and a second inclined portion 4023, the first inclined portion 4021, the transition portion 4022 and the second inclined portion 4023 are connected to each other, and the transition portion 4022 is located between the first inclined portion 4021 and the second inclined portion 4023 for connecting the first inclined portion 4021 and the second inclined portion 4023.

[0132] Specifically, the first inclined portion 4021 is inclined with respect to the horizontal plane, and the height of the first inclined portion 4021 gradually increases in the direction away from the first groove 401. The second inclined portion 4023 is also inclined with respect to the horizontal plane, and the height of the second inclined portion 4023 gradually increases in the direction away from the first groove 401. Preferably, the transition portion 4022 is formed in an arc shape to ensure that the second sliding member 404 smoothly transitions between the first inclined portion 4021 and the second inclined portion 4023.

[0133] It is worth noting that the inclination angle of the first inclined portion 4021 relative to the horizontal direction is greater than the inclination angle of the second inclined portion 4023 relative to the horizontal direction. When the second sliding component 404 slides in the first inclined portion 4021, the height lifting speed of the second sliding component 404 is faster, so that the movable base 100 has a faster height lifting speed, which brings a stronger sense of weightlessness to the user and enhances the user's weightless experience. When the second sliding component 404 slides in the second inclined portion 4023, the height lifting speed of the second sliding component 404 is slower, so that the movable base 100 has a slower height lifting speed, and the user's sense of weightlessness is weaker. Under the combined effect of the first inclined portion 4021 and the second inclined portion 4023, the user's senses gradually transition from weightlessness to weightlessness, enhancing comfort and improving the user's experience.

[0134] Specifically, the inclination angle of the first inclined portion 4021 relative to the horizontal direction is α, which is set to 15° to 33°, and the inclination angle of the second inclined portion 4023 relative to the horizontal direction is β, which is set to 5° to 18°. When the inclination angles of the first inclined portion 4021 and the second inclined portion 4023 are within the above angle range, it can be ensured that the inclination angle of the movable base 100 after the sliding process is completed matches the weightless posture of the user.

[0135] In addition, the inclination angle of the first groove 401 relative to the horizontal direction is γ, and γ is set to -5° to 5°. The first groove 401 extends in an approximately horizontal direction, and combined with the inclination angle range of the first inclined portion 4021 and the second inclined portion 4023, it can further ensure that the user on the movable base 100 enters a weightless posture.

[0136] In some examples, such as Fig.11 , Fig.12 , Fig.13 and Fig.14As shown, the seat frame includes a connecting mechanism 500. On one hand, the connecting mechanism 500 is connected to the movable base 100, and on the other hand, the connecting mechanism 500 is connected to the rotating assembly. At the same time, the connecting mechanism 500 is also connected to the fixed base 400. Specifically, the connecting mechanism 500 is connected to the driving rod 302 in the rotating assembly. Therefore, the movable base 100, the rotating assembly and the fixed base 400 are connected to each other through the connecting mechanism 500, ensuring that the telescopic movement of the leg support mechanism 300 and the sliding movement of the movable base 100 are linked to each other.

[0137] The connecting mechanism 500 is hinged to the driving rod 302 of the rotating assembly and is also hinged to the fixed base 400, and the connecting mechanism 500 is rotatably connected to the movable base 100. When the rotating component 201 drives the driving rod 302 to rotate, the driving rod 302 drives the leg support mechanism 300 to perform telescopic movement. At the same time, the driving rod 302 transmits force to the connecting mechanism 500, and then the connecting mechanism 500 transmits force to the fixed base 400. The fixed base 400 pushes the movable base 100 through the reaction force, so that the movable base 100 slides relative to the fixed base 400. It can be understood that under the above-mentioned driving action, the movable base 100 also needs to slide according to the definition of the first groove 401 and the second groove 402.

[0138] In some examples, such as Fig.15 As shown, the connection mechanism 500 is formed as a connecting rod mechanism, and includes a first connecting rod 501, a second connecting rod 502 and a third connecting rod 503, and the first connecting rod 501, the second connecting rod 502 and the third connecting rod 503 are hinged in sequence.

[0139] The first connecting rod 501 is hinged to the driving rod 302, and the third connecting rod 503 is hinged to the fixed base 400. The second connecting rod 502 includes a first hinge portion 5021, a second hinge portion 5022 and a rotation connection portion 5023. The first connecting rod 501 is hinged to the second connecting rod 502 through the first hinge portion 5021, and the third connecting rod 503 is hinged to the second connecting rod 502 through the second hinge portion 5022. At the same time, the second connecting rod 502 is rotationally connected to the movable base 100 through the rotation connection portion 5023.

[0140] It can be understood that the second connecting rod 502 provides a thrust to the movable base 100 , thereby driving the movable base 100 to slide.

[0141] In some examples, in order to ensure that the direction of the thrust received by the movable base 100 matches the movement direction of the movable base 100 under the combined action of the first groove 401 and the second groove 402, so that the sliding process of the movable base 100 relative to the fixed base 400 is smooth, the ratio of the distance between the rotating connection part 5023 and the first hinge part 5021 to the distance between the rotating connection part 5023 and the second hinge part 5022 is 1:1 to 1:3.

[0142] In some examples, such as Figure 1 As shown, the seat frame includes a back support mechanism 600, which is also formed as a connecting rod mechanism. On one hand, the back support mechanism 600 is hinged to the fixed base 400; on the other hand, the back support mechanism 600 is hinged to the movable base 100, where the length of each connecting rod in the connecting rod mechanism makes the back support mechanism 600 protrude from the fixed base 400. The back support mechanism 600 is used to install a backrest, and the back support mechanism 600 supports the user's back through the backrest.

[0143] The movable base 100 drives the back support mechanism 600 to change its angle by sliding relative to the fixed base 400. When the movable base 100 gradually moves out of the range of the fixed base 400, the angle between the structure of the back support mechanism 600 for installing the backrest and the horizontal plane gradually decreases, so that the user gradually enters a weightless posture. When the movable base 100 gradually moves into the range of the fixed base 400, the angle between the structure of the back support mechanism 600 for installing the backrest and the horizontal plane gradually increases, so that the user gradually enters a normal sitting posture.

[0144] It can be understood that the angle adjustment process of the back support mechanism 600, the sliding process of the movable base 100 and the telescopic process of the leg support mechanism 300 are interconnected, allowing the user to freely switch between the zero-weight posture and the normal sitting posture.

[0145] It is worth noting that when the angle between the structure of the back support mechanism 600 used to install the backrest and the horizontal plane is the largest, the back support mechanism 600 is in the extreme position, and at this time, the back support mechanism 600 is within the range of the fixed base 400. When the angle between the connecting rod of the back support mechanism 600 used to install the backrest and the horizontal plane decreases, the overall movement direction of the back support mechanism 600 is toward the movable base 100, and will not exceed the range of the fixed base 400.

[0146] Therefore, when the fixed base 400 is placed against the wall, the back support mechanism 600 will not interfere with the wall during movement, that is, the seat frame of the present application can achieve "zero wall contact".

[0147] In some examples, such as Fig.16 and Fig.17 As shown, the back support mechanism 600 includes a first back link 601 , a second back link 602 , a third back link 603 and a back link mounting component 604 .

[0148] The first end of the first back link 601 is hinged to the fixed base 400, and the second end of the first back link 601 is hinged to the back link mounting component 604. The first end of the second back link 602 is hinged to the fixed base, and the second end of the second back link 602 is hinged to the back link mounting component 604.

[0149] As can be seen from the above, in terms of hinge relationship, the first back link 601 and the second back link 602 are consistent. However, the specific hinge position of the first end of the first back link 601 is different from the specific hinge position of the first end of the second back link 602, and the specific hinge position of the second end of the first back link 601 is also different from the specific hinge position of the second end of the second back link 602.

[0150] Further, in the height direction, the hinge position of the first end of the first back link 601 is greater than the hinge position of the first end of the second back link 602. In the horizontal direction, the hinge position of the first end of the second back link 602 is closer to the movable base 100 than the hinge position of the first end of the first back link 601.

[0151] Meanwhile, there is a certain interval between the hinged position of the second end of the first back link 601 and the hinged position of the second end of the second back link 602 .

[0152] Therefore, the first back link 601, the fixed base 400, the second back link 602 and the back link mounting part 604 form a four-bar mechanism. When the first back link 601 rotates relative to the fixed base 400, the angle of the second back link 602 relative to the fixed base 400 also changes due to the restriction of the four-bar mechanism. Since the first end of the first back link 601 and the first end of the second back link 602 are at different hinge positions, the forces applied by the first back link 601 and the second inner link 602 to the back link mounting part 604 during the rotation process also have different directions, thereby driving the back link mounting part 604 to rotate.

[0153] In addition, the first end of the third back link 603 is hinged to the movable base 100, and the second end of the third back link 603 is hinged to the first back link 601. The first back link 601, the fixed base 400, the second back link 602 and the back link mounting component 604 can form a connection between the movable base 100 and the fixed base 400. When the movable base 100 slides relative to the fixed base 400, the movable base 100 drives the third back link 603 to perform a composite motion including movement and rotation, and the third back link 603 then transmits the force to the first back link 601, thereby applying a driving force to the first back link 601, so that the first back link 601 rotates.

[0154] In some examples, the back connecting rod mounting component 604 is fixedly connected to a backrest mounting plate 605, and the backrest mounting plate 605 is used to mount a backrest. When the first back connecting rod 601, the second back connecting rod 602, and the third back connecting rod 603 move in coordination, the back connecting rod mounting component 604 rotates, thereby driving the backrest mounting plate 605 to rotate. At this time, the angle of the backrest changes, thereby adapting to the user's normal sitting posture or zero-gravity posture.

[0155] In some examples, the side edge of the first back link 601 is provided with an extension 6011, the extension 6011 extends to the side of the first back link 601 away from the movable base 100, and the second end of the third back link 603 is hinged to the extension 6011. It is understood that the hinge position of the second end of the third back link 603 deviates from the line connecting the first end of the first back link 601 and the second end of the first back link 601, so as to ensure that the back link mounting component 604 can be at a desired angle. It is understood that the hinge position of the second end of the third back link 603 and the length of the third back link 603 can also limit the rotation speed of the back link mounting component 604. The user can adaptively adjust the above variables according to actual needs, so as to ensure the rotation amplitude and rotation speed of the back link mounting component 604.

[0156] In some examples, when the user is in a weightless posture, the angle between the user's back and thigh is λ, and λ is between 121° and 135°. In the seat frame of the present application, a seat bag is provided on the top of the movable base 100, and the seat bag defines the position of the user's thigh. The back connecting rod mounting component 604 is provided with a back bag mounting plate 605, and the back bag mounting plate 605 is used to install the back bag, and the back bag defines the position of the user's back. Therefore, when the user is in a weightless posture, the angle between the back bag and the seat bag is also between 121° and 135°, that is, the angle between the movable base 100 and the back bag mounting plate 605 is between 121° and 135°.

[0157] Specifically, when the first sliding component 403 slides to the end of the first slot 401, and the second sliding component 404 slides to the end of the second inclined portion 4023, the angle between the movable base 100 and the backrest mounting plate 605 is between 121° and 135°, so that the user is in a weightless posture. It can be understood that when the first sliding component 403 slides to the opposite end of the first slot 401, and the second sliding component 404 slides to the end of the first inclined portion 4021, the angle between the movable base 100 and the backrest mounting plate 605 decreases, so that the user is in a normal sitting posture.

[0158] The present application provides a seat, including the above-mentioned seat frame, wherein the seat also includes a seat bag, a back bag and a leg rest, wherein the seat bag is connected to the top of the movable base 100 to support the user's thighs; the back bag is connected to the back support mechanism 600 to support the user's back; and the leg rest is connected to the leg support mechanism 300 to support the user's legs.

[0159] In actual use, the movable base 100 is within the range of the fixed base 400, the leg support mechanism 300 is at the bottom of the movable base 100, the angle between the backrest mounting plate 605 in the back support mechanism 600 and the movable base 100 is the smallest, and the user is in a normal sitting position. When the movable base 100 moves out of the range of the fixed base 400 and reaches the limit of movement, the leg support mechanism 300 extends to the outside of the movable base 100, the angle between the backrest mounting plate 605 in the back support mechanism 600 and the movable base 100 is the largest and is between 121° and 135°, and the user is in a zero-gravity sitting position.

[0160] At the same time, the rotating part 201 is rotatably supported on the movable base 100, ensuring that the rotating part 201 moves synchronously at all locations, avoiding shaking of the leg support mechanism 300, and ensuring that the torque of the two leg support mechanisms 300 is balanced, thereby improving the user's experience. At the same time, the driver 202 is arranged near the side frame 101, and the rotating part 201 is at the edge of the movable base 100, thereby preventing the serpentine spring sunken in the seat bag from contacting the driver 202 and the rotating part 201, thereby improving the user's sitting feeling. In addition, the back support mechanism 600 is always within the range of the fixed base 400, thereby achieving zero wall contact of the seat frame. Furthermore, the second guide structure is used to limit the sliding direction of the movable base 100 relative to the fixed base 400. When the second sliding component 404 moves to the first inclined portion 4021, it can enhance the user's sense of weightlessness. When the second sliding component 404 moves to the second inclined portion 4023, it can reduce the user's sense of weightlessness. As a transition between weightlessness and zero gravity, the user's experience is fully enhanced. The first inclined portion 4021 and the second inclined portion 4023 can also adjust the inclination angle of the movable base to ensure that the user can reach a weightless posture.

[0161] The above is a detailed description of the implementation methods of the present application in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A supporting transmission device, characterized in that: include: movable base; A driving mechanism, the driving mechanism comprising a rotating component supported on the movable base, the rotating component being rotatably disposed on the movable base; The leg support mechanism is fixedly connected to the rotating component, and the leg support mechanism includes a leg telescopic assembly. The rotating component drives the leg telescopic assembly to rotate by rotating to drive the leg telescopic assembly to extend or contract.

2. The supporting transmission device according to claim 1, characterized in that: The driving mechanism comprises a driver, one end of which is hinged to the movable base, and the other end of which is hinged to the rotating component. The driver is located close to the side edge of the movable base.

3. The supporting transmission device according to claim 2, characterized in that: The driving mechanism further comprises a driver mounting component, which is fixedly arranged on the rotating component and extends to the outside of the rotating component, and the driver mounting component is hinged to the driver.

4. The supporting transmission device according to claim 2, characterized in that: The movable base comprises side frames arranged on opposite sides and a transverse frame connected between the side frames. Both ends of the rotating component are rotatably connected to the side frames, and the end of the driver is hinged to the transverse frame.

5. The supporting transmission device according to claim 4, characterized in that: A first plug hole is provided at the end of the rotating component, and a first support column extending toward the rotating component is provided on the side frame. The first support column is inserted into the first plug hole to form a rotating connection.

6. The supporting transmission device according to claim 4, characterized in that: The end of the rotating component is provided with a second pillar extending outward, and the side frame is provided with a second plug hole, and the second pillar is inserted into the second plug hole to form a rotating connection.

7. The supporting transmission device according to claim 4, characterized in that: The position where the rotating component is connected to the side frame is close to the end of the side frame.

8. The supporting transmission device according to claim 1, characterized in that: The leg supporting mechanism further comprises a driving rod, the driving rod is fixedly connected to the rotating component, and the driving rod is hinged to the leg telescopic assembly.

9. The supporting transmission device according to claim 8, characterized in that: The leg telescopic assembly includes a first telescopic unit, which is hinged to the driving rod and the movable base. The driving rod drives the first telescopic unit to extend or contract by rotating.

10. The supporting transmission device according to claim 9, characterized in that: The first telescopic unit includes a first leg link, a second leg link, a third leg link and a leg link mounting component, the first leg link is hinged to the movable base, the third leg link is hinged between the driving rod and the leg link mounting component, and the second leg link is hinged to the leg link mounting component, the driving rod and the first leg link.

11. The supporting transmission device according to claim 10, characterized in that: The first leg link and the leg link mounting component are hinged at both ends of the second leg link, and the driving rod is hinged at the middle of the second leg link; the movable base and the third leg link are hinged at both ends of the driving rod, and the second leg link is hinged at the middle of the driving rod.

12. A seat frame, characterized in that: include: Fixed base; A movable base, wherein a guide assembly is provided between the fixed base and the movable base, and the movable base is slidably arranged on the fixed base through the guide assembly; A driving mechanism, the driving mechanism comprising a rotating component and a driver, the rotating component being a rotating rod rotatably supported on the movable base, and the driver being hinged to the rotating component through a driver mounting component; The leg supporting mechanism comprises a driving rod fixedly connected to the rotating part and a leg telescopic assembly hinged to the driving rod. The rotating part and the driving rod drive the leg telescopic assembly to extend or contract by rotating.

13. The seat frame according to claim 12, characterized in that: The guide assembly includes a first guide structure and a second guide structure which are arranged on the fixed base, and the inclination angle of the first guide structure relative to the horizontal direction is -5° to 5°.

14. The seat frame according to claim 13, characterized in that: The second guiding structure includes a first inclined portion and a second inclined portion, wherein the first inclined portion has an inclination angle of 15° to 33° relative to the horizontal direction, and the second inclined portion has an inclination angle of 5° to 18° relative to the horizontal direction.

15. The seat frame according to claim 12, characterized in that: The seat frame also includes a connecting mechanism, which is rotatably arranged on the movable base and is hinged between the rotating component and the fixed base.

16. The seat frame according to claim 15, characterized in that: The connecting mechanism includes a first connecting rod, a second connecting rod and a third connecting rod. The second connecting rod includes a first hinged portion hinged to the first connecting rod, a second hinged portion hinged to the third connecting rod, and a rotating connecting portion rotatably connected to a movable base. The rotating connecting portion is located between the first hinged portion and the second hinged portion. The first connecting rod is hinged to the driving rod, and the third connecting rod is hinged to the fixed base.

17. The seat frame according to claim 16, characterized in that: A ratio of a distance between the rotating connection portion and the first hinge portion to a distance between the rotating connection portion and the second hinge portion is 1:1 to 1:

3.

18. The seat frame according to claim 14, characterized in that: The seat frame also includes a back support mechanism, which includes a first back link, a second back link, a third back link and a back link mounting component, the first back link and the second back link are both hinged between the back link mounting component and the fixed base, the third back link is hinged between the first back link and the movable base, the side edge of the first back link is provided with an extension portion extending outward, and the end of the third back link is hinged to the extension portion.

19. The seat frame according to claim 18, characterized in that: The back connecting rod mounting component is fixedly connected to a backrest mounting plate. When the first sliding component slides to the end of the first guide structure and the second sliding component slides to the end of the second inclined portion, the movable base is at an angle of 121° to 135° to the backrest mounting plate.

20. A sitting tool comprising the sitting frame according to any one of claims 12 to 19.

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