SEAT

Abstract

A seat comprises a base frame, side seat cushion frames spaced apart from each other on the left and right sides of the base frame and connected by a front articulated tube on its front side and a rear articulated tube on its rear side, a backrest frame rotatably attached to a rear end of the side seat cushion frame, an extension frame connected between the side seat cushion frame and the backrest frame, and a lifting device mounted longitudinally on a bracket supporting the side seat cushion frame, comprising a connecting element which moves forward or backward due to a driving force from a drive motor and lifts the rear articulated tube around the front articulated tube.

Description

TECHNICAL AREA

[0001] The present disclosure relates to a folding and recessed seat. TECHNICAL BACKGROUND

[0002] A vehicle seat may have a folding function for folding down a backrest over a seat cushion (for example, to create cargo space behind the backrest) and a lowering function for lowering a front part of the seat cushion to bring a rear surface of the folded backrest into a horizontal plane (for example, when a long object etc. is loaded into a space behind / above the backrest).

[0003] In addition to the folding and retracting mechanism for folding down the backrest, the seat may be equipped with a reclining mechanism for reclining the backrest backwards (for example, to allow a comfortable posture in the vehicle for an occupant to rest and / or sleep).

[0004] With the folding and recessed seat, the reclining of the backrest can be set to a basic position by means of the reclining mechanism, whereby the seat cushion is held in the basic position.

[0005] In contrast, with a folding and lowering seat, the lowering movement of the front part of the seat cushion can be carried out by the folding and lowering mechanism in order to bring the back or rear surface of the backrest into a horizontal plane when the backrest is folded down.

[0006] In this way, with the folding and recessing seat, due to the characteristic that the front of the seat cushion is lowered when the backrest is folded down, it is not easy to arrange other components at the lower end of the front of the seat cushion, and it is difficult to achieve a fully flat function of the backrest, as the range of movement through which the seat cushion can be lowered is limited.

[0007] Furthermore, the application of a relaxation mode that allows for angle adjustment of the seat cushion may require complicated component structures and an increased number of components, which can be disadvantageous in terms of cost and weight.

[0008] The facts described in this section “Background” serve only to provide a better understanding of the background of the disclosure and are not to be understood as an acknowledgment that they correspond to prior art already known to a person skilled in the art. DEPICTION

[0009] The following description is a simplified summary of certain features. It is not a comprehensive overview and is not intended to identify essential or critical elements.

[0010] This document describes systems, devices, and methods for a seat. A seat may comprise: a base frame; a first lateral seat cushion frame provided on a first side of the base frame; a second lateral seat cushion frame provided on a second side of the base frame opposite the first side; a front articulated tube connecting a front of the first lateral seat cushion frame to a front of the second lateral seat cushion frame; a rear articulated tube connecting a rear of the first lateral seat cushion frame to a rear of the second lateral seat cushion frame; a backrest frame rotatably attached to the rear ends of the first and second lateral seat cushion frames; and a first extension frame connecting the first lateral seat cushion frame and the backrest frame.a second extension frame connecting the second side seat cushion frame and the backrest frame; and lifting devices mounted longitudinally on brackets supporting the first and second side seat cushion frames, each lifting device having a rotary element configured to rotate by means of a driving force from a drive motor to raise or lower the rear joint tube relative to the front joint tube.

[0011] A seat may comprise: a base frame; a side seat cushion frame provided on one side of the base frame; a front articulated tube connected to a front of the side seat cushion frame; a rear articulated tube connected to a rear of the side seat cushion frame; a backrest frame rotatably attached to a rear end of the side seat cushion frame; a drive motor configured to move a leadscrew in a forward or reverse direction;and a rotary element having a first end connected to the leadscrew to move with the leadscrew in the forward or reverse direction, wherein: the rotary element is rotatably connected at a point to a support such that a second end of the rotary element, opposite the first end of the rotary element, is configured to lower or raise itself by rotating about the point based on movement of the first end in the forward or reverse direction; and the second end of the rotary element is connected to the rear articulated tube.

[0012] These and other features and advantages are described in more detail below. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above-mentioned and other tasks, features and advantages of the present disclosure will be easier to understand by referring to the following detailed description in conjunction with the accompanying drawings. Fig. 1 is a view showing a seat frame of a seat according to an example in the present disclosure; Fig. 2 is a view illustrating an operating state of a full flat mode in the seat frame of the seat according to the example of the present disclosure; Fig. 3 is a view showing a state before and after activation of the full-flat mode of the seat according to the example of the present disclosure; Fig. 4 is a perspective view showing the seat in full flat mode according to the example of the present disclosure; Fig. Figure 5 is a view illustrating an operating state of a relaxation mode in the seat frame of the seat according to the example of the present disclosure; Fig. Figure 6 is a view illustrating a state before and after activation of the seat's relaxation mode, according to the example in the present disclosure; and Fig. Figure 7 is a perspective view showing the seat in relaxation mode according to the example of the present revelation. DETAILED DESCRIPTION

[0014] Some examples of the present disclosure are described in detail below with reference to the drawings. Where reference numerals have been added to the components in the drawings, identical components should, where possible, have the same reference numerals, even if the components are shown in different drawings. Furthermore, when describing the examples of the present disclosure, a detailed description of the associated known configurations or functions is omitted if it is determined that such a description would obscure the understanding of the present disclosure.

[0015] Furthermore, terms such as "first," "second," "A," "B," "(a)," and "(b)" may be used in the description of the components of the examples in this disclosure. These terms serve only to distinguish one component from other components and do not restrict the nature, order, or sequence of the components. It is understood that where a component is "connected," "coupled," or "associated" with another component, the former may be directly connected or associated with the latter, or it may be "connected," "coupled," or "associated" with a third component located between them.

[0016] For the purposes of this application and the claims, the use of the exemplary phrase "at least one of: A; B; or C" or "at least one of A, B or C" means "at least one A or at least one B or at least one C or any combination of at least one A, at least one B and at least one C". Furthermore, exemplary expressions such as "A, B or C", "at least one of A, B and C", "at least one of A, B or C", etc., as used herein, may mean any item listed or any combination thereof. For example, "at least one of A or B" may refer to (1) at least one A, (2) at least one B, or (3) at least one A and at least one B. "One or more of" here is synonymous with "at least one of".

[0017] The term "approximately" in relation to a reference value and its grammatical equivalents, as used here, can include the reference value itself and a range of values ​​plus or minus 10% of that reference value. For example, the term "approximately 10" includes 10 and any quantity from 9 to 11 inclusive. In some cases, the term "approximately" in relation to a reference value can also include a range of values ​​plus or minus 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, or 1% of that reference value. In some embodiments, "approximately" in conjunction with a number or range measured by a particular method means that the stated numerical value includes values ​​determined by the variability of that method.

[0018] Unless otherwise defined, the terms used herein, including technical or scientific terms, have meanings which are generally understood by a person skilled in the field of the present disclosure.

[0019] Expressions such as "include," "may include," "contain," "may contain," "exhibit," "may exhibit," etc., as used here, are intended to signify the presence of a property (for example, function, process, component, etc.) and do not exclude the presence of other additional properties. That is, these expressions are to be understood as open terms that include the possibility of other examples being included.

[0020] Unless otherwise indicated by the context, a singular expression used here can also have the meaning of the plural, which also applies to the singular expression described in the claims.

[0021] The expression “based on”, if used herein, is intended to describe one or more factors which influence an act or process of determination or decision described in any expression or phrase including this expression, and this expression does not exclude any additional factors which influence the act or process of determination or decision.

[0022] Depending on the context, the term "configured for" as used here can have meanings such as "set to," "capable of," "modified to," "made for," "able to," etc. This term is not limited to the meaning of "specifically designed in hardware for that purpose." For example, a processor configured to perform a particular operation can refer to a general-purpose processor that can perform the specific operation by running software, or a specialized computer that is structured through programming to perform the specific operation.

[0023] Directional terms such as "front," "rear," "side," "left," "right," "under," etc., refer to directions as perceived by a user seated in the seat disclosed herein. The use of directional terms is for clarity and does not restrict the seat disclosed herein to any particular orientation or configuration. The use of directional terms does not limit the seat to being installed in a vehicle or used by any user.

[0024] The terms "module" or "unit" used in this description refer to a software and / or hardware component, where the "module" or "unit" performs specific operations, functions, or roles. However, the "module" or "unit" is not limited to software or hardware. The "module" or "unit" may be configured to reside in addressable storage or to run one or more processors. Therefore, the "module" or "unit" may, for example, include at least one of the following: software components, object-oriented software components, class components and task components, processes, functions, attributes, procedures, subroutines, program code segments, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, or variables.The functions provided in the components, "modules" or "units" can be grouped into a smaller number of components, "modules" or "units" or subdivided into further components, "modules" or "units".

[0025] In the present disclosure, the “module” or “unit” may be implemented as a processor and memory. The term “processor” is to be understood broadly and includes a general-purpose or multi-purpose processor, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller, a finite automaton, or the like. In some contexts, the “processor” may refer to an application-specific integrated circuit (ASIC), a programmable logic device (PLD), a field-programmable gate array (FPGA), and the like. For example, the term “processor” may refer to a combination of processing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, a combination of one or more microprocessors in conjunction with a DSP core, or any other such combination.Furthermore, the term "memory" should be broadly defined and encompass any electronic component capable of storing electronic information. "Memory" can refer to various types of processor-readable media, such as random-access memory (RAM), read-only memory (ROM), non-volatile random-access memory (NVRAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, magnetic or optical data storage devices, and registers. If the processor can read information from memory and / or record information in memory, the memory can be in a state of electronic communication with the processor. Memory integrated into a processor is in a state of electronic communication with the processor.

[0026] The one or more functions described herein can be provided as a computer program stored on a computer-readable recording medium for execution on a computer. The medium can either continuously store a computer-executable program or temporarily store the program for execution or download. Furthermore, the medium can be a variety of recording or storage media in the form of a single hardware device or several combined hardware devices and is not limited to media directly connected to a computer system, but can also be distributed over a network.Examples of such media include magnetic media such as a hard drive, floppy disk, or magnetic tape; optical recording media such as a CD-ROM or DVD; magneto-optical media such as a floppy disk; and ROM, RAM, or flash memory configured, among other things, to store program instructions. Further examples of such media include media or storage media managed by an app store that distributes applications, or by various other websites or servers that provide or distribute software.

[0027] In a hardware implementation, the processing units used to carry out the methods may be implemented in one or more ASICs, DSPs, digital signal processing devices, programmable logic devices, field-programmable gate arrays, processors, controllers, microcontrollers, microprocessors, electronic devices or computers, or combinations thereof, designed to perform the functions described in the present disclosure.

[0028] In the following, a seat according to an example from the present disclosure is described in detail with reference to the attached drawings.

[0029] Fig. Figure 1 is a view showing a seat frame 100 of a seat according to an example in the present disclosure.

[0030] With reference to Fig. 1. According to the present disclosure, the seat frame 100 of the seat can have a base frame 110, a pair of lateral seat cushion frames 120 spaced apart from each other and positioned on the left and right sides of the base frame 110, and a backrest frame 130 rotatably attached to the rear ends of the lateral seat cushion frames 120.

[0031] The base frame 110 can be configured to support a seated user (for example, the user's hips and thighs when seated), and various padding structures (for example, where a sponge, urethane, or spring is embedded in a soft fabric or synthetic / natural leather within a hard material such as plastic or metal or a frame) can be attached to the base frame 110. The base frame 110 as a whole can have a frame structure with a circular and / or rectangular shape to adequately support the user's hips and thighs.

[0032] The side seat cushion frames 120 can be spaced apart from each other at a predetermined distance (for example, on the left and right sides of the base frame 110). Front and rear joint tubes 170 and 175 can each be coupled between the side seat cushion frames 120 (for example, to connect the side seat cushion frames 120).

[0033] The front joint tube 170 can be mounted in front of the side seat cushion frame 120 and serve as a pivot point when the side seat cushion frame 120 is raised by a rotating element 240 and the rear joint tube 175.

[0034] The rear joint tube 175 can be articulated to the swivel element 240 and the side seat cushion frame 120 simultaneously to support a lifting movement of the side seat cushion frame 120 when / if the swivel element 240 is rotated.

[0035] The backrest frame 130 can be a frame structure shaped to correspond to the back of the user in order to support the user's back. The backrest frame 130 can be hinged to a backrest element 145 (for example, a backrest element joint / hinge). The backrest frame 130 can have an overall circular or rectangular shape.

[0036] Various upholstery structures (for example, in which a sponge, urethane, or spring, etc., is embedded in a soft fabric or synthetic / natural leather within a hard material such as plastic or metal or a frame) can be attached to the backrest frame 130. The backrest frame 130 can be locked in such a way that it can be tilted by the backrest element 145 in a forward-backward direction, for example, into a fully flat mode or a relaxation mode.

[0037] An extension frame 140 can be attached at a connection point between the rear end of the side seat cushion frame 120 and a lower end of the backrest frame 130. The backrest element 145 can be attached at a connection point between the backrest frame 130 and the extension frame 140.

[0038] The backrest frame 130 can be adjusted forward and / or backward by means of the backrest element 145. For example, the backrest frame 130 can be tilted by means of the backrest element 145 at the rear end of the side seat cushion frame 120. The backrest frame 130 can be tilted forward and backward (for example, manually and / or automatically by the user when the backrest element 145 is unlocked). The backrest frame 130 can be coupled with the extension frame 140 to adjust an angle in the forward-backward direction by means of the backrest element 145.

[0039] Since the side seat cushion frame 120 and the backrest frame 130 are connected to each other via the extension frame 140, the side seat cushion frame 120 and the backrest frame 130 can move together (for example in a forward / backward direction, etc.) while being locked together via the extension frame 140.

[0040] A bracket 150, which supports the side seat cushion frame 120, can be attached under each of the side seat cushion frames 120. The brackets 150 can be arranged such that they are spaced apart from each other on the left and right sides of the base frame 110 (for example, corresponding to the side seat cushion frames 120). A motion rail 160 can be attached under the bracket 150.

[0041] The motion rail 160 can, for example, be coupled to a fixed rail 165 (which is attached, for example, to a vehicle floor panel) if the seat is installed in a vehicle. The motion rail 160 coupled to the fixed rail 165 allows the seat to be moved forwards and backwards, thus enabling the seat to be positioned in either direction.

[0042] For example, the side seat cushion frame 120 can be connected to the rear end of the base frame 110 by means of the swivel element 240 so that it can be raised, and the extension frame 140 for a tilting operation can be connected between the side seat cushion frame 120 and the backrest frame 130.

[0043] A first end of the extension frame 140 can be hinged to an outer surface of the side seat cushion frame 120 via the hinge (not shown), forming a predetermined angle for connection with the side seat cushion frame 120. A second end of the extension frame 140, opposite the first end, can be connected to an outer surface of the backrest frame 130 via the backrest element 145, forming a predetermined angle.

[0044] The backrest frame 130 can be rotatably coupled to the extension frame 140, the extension frame 140 can be connected to the side seat cushion frame 120, and thus the backrest frame 130 can be reclined in the forward-backward direction by means of the reclining process.

[0045] The example of the present disclosure enables a simple implementation of the full-flat mode and / or the relaxation mode by driving the rear end of the side seat cushion frame 120 in such a way that the rear joint tube 175 moves upwards or downwards in relation to the front joint tube 170.

[0046] For this purpose, a lifting device (for example, a lifting device 200) is provided in the example of the present disclosure for actuating the rear articulated tube 175.

[0047] The lifting device 200 can comprise a drive motor 210, a leadscrew 220, a connecting element 230, the rotary element 240, and a support element 250. The lifting device 200 can be provided in a longitudinal direction of the bracket 150 (for example, extending and / or being arranged essentially in the longitudinal direction of the bracket 150 from front to back).

[0048] The side seat cushion frame 120 can be equipped with the drive motor 210. The drive motor 210 can include a gearbox 211, which may include a reduction element (for example, a reduction gear) mounted on a motor shaft (not shown). The drive motor 210 can be attached to an output gear (not shown) in the gearbox 211, so that the leadscrew 220 can be moved forwards or backwards by driving the drive motor 210.

[0049] The leadscrew 220 can be attached to a mounting bracket 180, which is mounted on the base frame 110. For example, the mounting bracket 180 can be attached to the front of the bracket 150. The mounting bracket 180 can have / form a receiving space in which the leadscrew 220 can be securely held. A front end section of the leadscrew 220 can be connected to the mounting bracket 180 via a hinge.

[0050] The drive motor 210 can be defined as a motor capable of performing a folding and retracting function for the fully flat mode of the seat, as disclosed herein.

[0051] A reclining motor provided in or connected to the reclining element 145 of the seat, which can perform a reclining function by means of the reclining element 145, can be configured separately.

[0052] The two motors can be driven simultaneously (for example, by a push-button switch, not shown). Additionally or alternatively, the reclining element motor can independently cause the reclining element 145 to perform the reclining movement, and / or the user can perform the reclining movement manually.

[0053] The drive motor 210, which is applied to the example of the present disclosure, can be a motor that can perform the folding and tilting function.

[0054] A first end of the leadscrew 220 can be connected to the mounting bracket 180, and a second end of the leadscrew 220, opposite the first end of the leadscrew 220, can be connected to the connecting element 230.

[0055] A first end of the connecting element 230 can be connected to the leadscrew 220, and a second end of the connecting element 230, which is opposite the first end of the connecting element 230, can be connected to the rotary element 240.

[0056] The leadscrew 220 does not have to be directly connected to the rotary element 240 (for example, without the connecting element 230 in between). However, the leadscrew 220 connected to the connecting element 230 can enable a more efficient execution of a process or actuation.

[0057] A first end of the pivot element 240 can be connected to the connecting element 230, and a second end of the pivot element 240, opposite the first end of the pivot element 240, can be connected to the rear joint tube 175. Since the rear joint tube 175 is pivotally connected between the pair of spaced-apart side seat cushion frames 120, the side seat cushion frames 120 can be locked together by a tilting movement of the pivot element 240.

[0058] A first end of the support element 250 can be connected to a point on the pivot element 240 between its first and second ends (for example, connected to the center of the pivot element 240). A second end of the support element 250, opposite the first end of the support element 250, can be rotatably connected to an inner surface of the bracket 150. The support element 250 and the pivot element 240 can have the same direction of movement.

[0059] The seat according to the example of the present disclosure can implement the fully flat mode when the forward folding of the backrest is set, and can implement the relaxation mode when the backward reclining of the backrest is set.

[0060] The fully flat mode and / or the relaxation mode of the seat can be performed by the lifting device 200, which includes the drive motor 210, the lead screw 220, the connecting element 230, the rotary element 240 and the support element 250 and is connected to a connecting part.

[0061] The leadscrew 220 can be attached to the output gear (not shown) in the gearbox 211 of the drive motor 210. Thus, the leadscrew 220 can be moved forward or backward by moving the output gear driven by the drive motor. The connecting element 230 can be attached to the rear of the leadscrew 220 (for example, a second end of the leadscrew 220 opposite a first end of the leadscrew 220 that is attached to the output gear) to move forward or backward.

[0062] The rotating element 240, connected to the rear (for example, the second end) of the connecting element 230, can be articulated to the bracket 150 via the connecting element 230 and simultaneously articulated to the side seat cushion frame 120 via the rear joint tube 175.

[0063] If the leadscrew 220 moves forward (for example, due to the drive of the drive motor 210), the first end (for example, a front end) of the rotary element 240 can be pulled forward, the second end (for example, a rear end) of the rotary element 240 can be lowered, and at the same time the rotary element 240 can be held / positioned in an approximately horizontal state with / over the support element 250 (see, for example, Fig. 5).

[0064] If / when the leadscrew 220 moves backward (for example, due to the drive of the drive motor 210), the first end (for example, a front end) of the rotary element 240 can be pushed backward, the second end (for example, the rear end) of the rotary element 240 can be raised, and at the same time the rotary element 240 can be held / positioned in an approximately vertical state with / over the support element 250 (see, for example, Fig. 2).

[0065] The following describes the operating procedures for the fully flat mode and the relaxation mode of the seat disclosed here.

[0066] Fig. Figure 2 is a view illustrating an operating state of a full flat mode in the seat frame of the seat according to the example of the present disclosure, Fig. Figure 3 is a view illustrating a state before and after activation of the full-flat mode of the seat according to the example of the present disclosure, and Fig. Figure 4 is a perspective view illustrating the seat in full flat mode according to the example in the present disclosure.

[0067] Referring to the attached drawings, the side seat cushion frames 120 can be held in a horizontal state before the fully flat mode (for example, in an upright mode) of the seat frame 100, and the rotary element 240, which controls a posture of the side seat cushion frame 120, can also be held in an approximately horizontal state.

[0068] The rotating element 240 can be arranged such that it is inclined upwards (for example, at a predetermined angle towards the rear). The first end of the support element 250, which is connected to the center of the rotating element 240 between the first and second ends of the rotating element 240, can be arranged such that it is inclined upwards at a predetermined angle towards the front. That is, the second ends of the rotating element 240 and the support element 250 can be spaced apart from each other at a predetermined angle towards the rear (where, for example, one vertex of the angle is a connection point between the first end of the support element 250 and the center / point of the rotating element 240).

[0069] Referring to the first drawing in Fig. 3. The backrest frame 130 and the extension frame 140 can be arranged in a substantially straight line at a predetermined angle to the rear before a forward folding operation of the backrest frame 130 and the extension frame 140 (for example, in an upright position and / or a reclining position).

[0070] When the user selects the folding and lowering function (for example, by operating a rotary switch and / or entering a command into a vehicle interface, etc.) to perform the folding and lowering function (for example, including folding the backrest forward and lowering the seat cushion), a controller (for example, a control device, a control computer, a control panel, not shown) can be configured to receive a signal indicating the selection (for example, receiving an input via the interface, receiving a switching signal from the rotary knob switch, etc.). Based on the received signal, the controller can perform a control operation to apply current to the drive motor 210. For example, the controller can apply a control signal to cause the current to be applied and / or apply the current based on the received selection signal.The control process can cause the drive motor 210 to be driven. A separate motor for a front folding movement of the backrest can also be operated, either separately or alternatively together with the drive motor 210, and / or the user can perform the front folding movement (for example, manually).

[0071] The controller may include a communication device for communicating with other control units and / or a sensor / user interface for controlling one or more assigned functions and / or operations, memory for storing an operating system, a logic instruction, and / or input / output information, and / or one or more processors for executing commands, calculations, and / or decisions necessary to control the assigned function. The controller may, for example, include a processor, a central processing unit (CPU), a microchip, logic, an application-specific integrated circuit (ASIC), memory, etc. The controller may manipulate and / or control other components in the system (for example, the drive motor 210), for example, by applying a current and / or causing a current to be applied to the drive motor 210 to drive the drive motor 210.

[0072] If the leadscrew 220 moves backward (for example, in accordance with / based on the drive of the drive motor 210), it can push the connecting element 230 and, correspondingly, the rotary element 240 backward (for example, one end of the rotary element 240 backward). If the rotary element 240 and the support element 250 move backward, the second end (for example, the rear end) of the rotary element 240 can be raised while it rotates around a hinge attachment point with the support element 250.

[0073] When the second end (for example, the rear end) of the swivel element 240 is raised (for example, by rotating it), the rear end of the side seat cushion frame 120, to which the rear joint tube 175 is connected, can be raised together with the rear joint tube 175, to which the swivel element 240 is connected. This process can cause the backrest frame 130 to become completely flat.

[0074] The backrest frame 130 can have a small rotation angle relative to the extension frame 140, thus limiting the degree of rotation (for example, the forward folding rotation) of the backrest frame 130. When the second end (for example, the rear end) of the side seat cushion frame 120 is raised, one side of the backrest can be further aligned into a horizontal position, allowing the backrest frame 130 to be implemented in a fully flat mode without, for example, lowering convex cushions formed on opposite sides of the backrest.

[0075] Fig. Figure 5 is a view illustrating an operating state of a relaxation mode in the seat frame of the seat according to the example of the present disclosure, Fig. Figure 6 is a view illustrating a state before and after operation of the relaxation mode of the seat according to the example of the present disclosure, and Fig. Figure 7 is a perspective view illustrating the seat in relaxation mode according to the example of the present revelation.

[0076] Referring to the accompanying drawings, the side seat cushion frames 120 can be held in a horizontal position (for example, in an upright position) before the relaxation mode of the seat frame 100. The rotary element 240, which controls the position of the side seat cushion frames 120, can be in an approximately horizontal position.

[0077] The pivot element 240 can be arranged such that it is inclined upwards at a predetermined angle towards the rear of the seat. The first end of the support element 250, which is connected to the center of the pivot element 240 (for example, between the first and second ends of the pivot element 240), can be arranged such that it is inclined upwards at a predetermined angle towards the front. In other words, the second ends of the pivot element 240 and the support element 250 can be spaced apart from each other at a predetermined angle towards the rear.

[0078] Referring to the first drawing from Fig. 6. The backrest frame 130 and the extension frame 140 can be arranged in a substantially straight line at a predetermined angle towards the rear before a reclining movement of the backrest frame 130 and the extension frame 140.

[0079] If the user selects the relaxation function of the seat frame 100 (for example, by pressing the button switch and / or making an input to a vehicle interface, etc.), the controller (not shown) can receive a signal (for example, receive an input via the interface, receive a switching signal from the button switch, etc.). The controller can then perform a control action to apply current to the drive motor 210 so that the drive motor 210 can be driven. For example, the controller can send a control signal to initiate the supply of current and / or apply current to the drive motor 210. A separate / second motor for reclining the backrest can also be operated in conjunction with the control of the drive motor 210, and / or the user can (for example, manually) perform the reclining movement of the backrest.

[0080] If the connecting element 230 and the rotating element 240 are pulled forward (for example, by the forward movement of the leadscrew 220 corresponding to the drive of the drive motor 210), the rotating element 240 and the support element 250 can move forward accordingly. The angle between the rotating element 240 and the support element 250 can decrease. Consequently, the rear end of the rotating element 240 can be lowered as it rotates around the hinge attachment point with the support element 250.

[0081] When the second end (for example, the rear end) of the swivel element 240 is lowered (for example, during rotation about the hinge mounting point), the rear of the side seat cushion frame 120, which is connected to the rear joint tube 175 to which the swivel element 240 is connected, can be lowered. This allows the rear end of the side seat cushion frame 120 to be tilted downwards (for example, relative to a front end of the seat cushion frame 120).

[0082] If the reclining of the backrest frame 130 is adjusted, since the rear end of the side seat cushion frame 120 can be tilted downwards, the body pressure can be easily distributed to the hips and thighs of the user, thus preventing increasing fatigue of the lower body and implementing a relaxation mode in which the user feels comfortable.

[0083] The present disclosure was made to solve the above-mentioned problems that arise in the prior art, while retaining the advantages achieved through the prior art unchanged.

[0084] An example of the present disclosure provides a seat that can realize a fully flat mode when the forward folding of a backrest is set, and a relaxation mode when the reclining is set.

[0085] The technical problems to be solved by the present disclosure are not limited to the problems mentioned above, and all other technical problems not mentioned here will be clearly understandable to the person skilled in the art to whom the present disclosure relates, based on the following description.

[0086] The present disclosure relates to a seat that can realize a fully flat mode when the forward folding of a backrest is discontinued, and a relaxation mode when the reclining is discontinued.

[0087] According to an example in the present disclosure, a seat comprises a base frame, side seat cushion frames spaced apart from each other on the left and right sides of the base frame and connected by a front articulated tube on a front side thereof and a rear articulated tube on a rear side thereof, a backrest frame rotatably attached to a rear end of the side seat cushion frame, an extension frame connected between the side seat cushion frame and the backrest frame, and a lifting device attached in a longitudinal direction to a support carrying the side seat cushion frame, a connecting part which moves forward or backward by virtue of a driving force from a drive motor and which lifts the rear articulated tube around the front articulated tube.

[0088] According to an example in the present disclosure, the lifting device may comprise a leadscrew that is attached in such a way that it is moved forwards or backwards by driving the drive motor, a connecting element that is connected to the leadscrew, and a rotating element that is pivotally connected to the connecting element and the rear articulated tube and is raised or lowered while its rear end rotates due to the forward or backward movement of the leadscrew.

[0089] According to an example in the present disclosure, the seat may further comprise a support element which is connected at one end to a middle end of the rotating element in order to have the same direction of movement as the rotating element, and which is rotatably connected at one opposite end to an inner side surface of the support.

[0090] According to an example in the present disclosure, the rotating element can have one end that is hinged to the connecting element, an opposite end that is hinged to the rear joint tube, and the middle end that is hinged to the support element which is rotatably held by the bracket.

[0091] According to an example in the present disclosure, the rotating element can be articulated to the bracket by the support element and simultaneously articulated to the side seat frame by the rear joint tube.

[0092] According to an example in the present disclosure, the rotating element can be arranged such that it is inclined upwards at a predetermined angle towards the rear in front of a full flat mode and a relaxation mode, the support element can be arranged such that it is inclined upwards at a predetermined angle towards the front, and the rotating element and the support element can be held in a state in which they are spaced apart from each other at a predetermined angle towards the rear.

[0093] According to an example in the present disclosure, the rotating element can lift the rear end of the side seat cushion frame together with the rear joint tube, while its rear end rotates about a hinge attachment point with the support element in full-flat mode.

[0094] According to an example in the present disclosure, the rotating element can lower the rear end of the side seat cushion frame together with the rear joint tube, while its rear end rotates about a hinge attachment point with the support element in the relaxation mode.

[0095] According to an example in the present disclosure, the leadscrew can be articulated to a mounting bracket which is attached to the base frame and has a receiving space for the leadscrew.

[0096] According to the seat as described in the present disclosure, a fully flat mode can be implemented when the forward folding of a backrest is discontinued, and a relaxation mode can be implemented when the reclining is discontinued.

[0097] A seat cushion can be tilted independently of the position of a backrest, thus enabling a relaxation posture desired by the user.

[0098] If a fully flat mode is implemented for the backrest, the backrest can be used as a table.

[0099] The above description of the present disclosure serves for illustration purposes, and a person skilled in the art in the field of the present disclosure will recognize that the present disclosure can easily be modified into other specific forms without altering the underlying technical concept or the essential feature of the present disclosure. Therefore, it is noted that the examples described above are illustrative but not limiting in all aspects. The scope of protection of the present disclosure is specified by the attached claims, and any changes or modifications that arise from the meaning and scope of protection of the attached claims and equivalent concepts therefrom should be understood as being included within the scope of protection of the present disclosure. List of reference symbols 100 seat frames 110 base frames 120 pairs of side seat cushion frames 130 backrest frames 140 extension frames 145 Backrest element 150 a bracket 160 a motion rail 165 fixed rail 170 front joint tube 175 rear joint tube 180 Mounting bracket 200 lifting device 210 Drive motor 211 gearbox 220 Lead screw 230 Connecting element 240 rotating element 250 support elements

Claims

A seat comprising: a base frame; a first side seat cushion frame provided on a first side of the base frame; a second side seat cushion frame provided on a second side of the base frame opposite the first side; a front hinge tube connecting a front of the first side seat cushion frame to a front of the second side seat cushion frame; a rear hinge tube connecting a rear of the first side seat cushion frame to a rear of the second side seat cushion; a backrest frame rotatably attached to the rear ends of the first and second side seat cushion frames; a first extension frame connecting the first side seat cushion frame and the backrest frame; a second extension frame connecting the second side seat cushion frame and the backrest frame;and lifting devices arranged longitudinally in the brackets supporting the first and second lateral seat cushion frames, each lifting device having a rotary element configured to rotate by means of a drive force from a drive motor to raise or lower the rear joint tube relative to the front joint tube. Seat according to claim 1, wherein each lifting device of the lifting devices comprises: a leadscrew configured to move forward or backward by means of the driving force of the drive motor; and a connecting element having a first end connected to the leadscrew, wherein a first end of the rotating element is pivotally connected to a second end of the connecting element opposite the first end of the connecting element; and a second end of the rotating element is connected to the rear articulated tube and is raised or lowered based on the movement of the leadscrew by means of the driving force of the motor. Seat according to claim 2, further comprising: a support element comprising: a first end which is connected to a point of the rotating element between the first and the second end of the rotating element; and a second end which is opposite the first end and rotatably connected to an inner side surface of a first support of the supports. Seat according to claim 3, wherein: the second end of the rotating element is articulated to the rear joint tube, and the support element is articulated at the point via a hinge to the rotating element. Seat according to claim 3, wherein the rotating element is articulated via the support element to the first bracket through the support element and is articulated via the rear joint tube to the first lateral seat cushion frame. Seat according to claim 4, wherein the seat is adjustable between a plurality of configuration modes, which include an upright mode in which: the pivoting element is arranged such that it is inclined upwards towards a rear of the seat, and the support element is arranged such that it is inclined upwards at a first predetermined angle towards a front of the seat, so that the pivoting element and the support element form a first predetermined angle at the hinge towards the rear of the seat. Seat according to claim 6, wherein the plurality of configuration modes further comprises a fully flat mode in which: the pivoting element and the support element at the hinge form a second predetermined angle towards the rear of the seat, wherein the second predetermined angle is greater than the first predetermined angle, such that the second end of the pivoting element raises the rear ends of the first and second lateral seat cushion frames by raising the rear joint tube. Seat according to claim 6, wherein the plurality of configuration modes further comprises a relaxation mode in which: the pivoting element and the support element at the hinge form a third predetermined angle towards the rear of the seat, wherein the third predetermined angle is smaller than the first predetermined angle, so that the second end of the pivoting element lowers the rear ends of the first and second lateral seat cushion frames by lowering the rear joint tube. Seat according to claim 2, wherein the lead screw is articulated to a mounting bracket which is attached to the base frame and forms a receiving space for the lead screw. A seat comprising: a base frame; a side seat cushion frame provided on one side of the base frame; a front articulated tube connected to a front of the side seat cushion frame; a rear articulated tube connected to a rear of the side seat cushion frame; a backrest frame rotatably attached to a rear end of the side seat cushion frame; a drive motor configured to drive a leadscrew to move in a forward or reverse direction;and a rotary element having a first end connected to the leadscrew in such a way that it moves with the leadscrew in a forward or reverse direction, wherein: the rotary element is rotatably connected to a support at a point such that a second end of the rotary element, opposite the first end of the rotary element, is configured to lower or raise itself by rotating about the point based on the movement of the first end in the forward or reverse direction; and the second end of the rotary element is connected to the rear articulated tube. Seat according to claim 10, further comprising an extension frame connecting the side seat cushion frame to the backrest frame. Seat according to claim 10, further comprising a connecting element which has: a first end which is connected to the lead screw; and a second end which is hinged to the first end of the rotary element. Seat according to claim 10, wherein the support has a support element, wherein the support element has: a first end rotatably connected to the rotating element at the point; and a second end opposite the first end of the support element and connected to the base frame. Seat according to claim 13, wherein an angle formed between the support element and the rotary element is configured such that it increases with a backward movement of the leadscrew or decreases with a forward movement of the leadscrew. Seat according to claim 14, further comprising a control device configured to receive a control input and, based on the control input, to apply a current configured to cause the drive motor to move the lead screw. Seat according to claim 15, wherein the control input specifies a selection of an upright mode, a fully flat mode or a relaxation mode. Seat according to claim 16, wherein the control device is configured to apply a current based on the fact that the control input indicates the upright mode, in order to cause the drive motor to move the leadscrew to a position in which the angle is a first predetermined angle. Seat according to claim 17, wherein the control device is configured to apply a current based on the control input indicating full flat mode, in order to cause the drive motor to move the leadscrew to a position where the angle is a second predetermined angle that is greater than the first predetermined angle. Seat according to claim 17, wherein the control device is configured to apply a current based on the control input indicating the relaxation mode, in order to cause the drive motor to move the lead screw to a position in which the angle is a third predetermined angle that is smaller than the first predetermined angle.

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