Seat, in particular vehicle seat
By designing an inclination mechanism in the vehicle seat and using the connecting rod mechanism to adjust the seat support structure between the upright and horizontal bed positions, the existing seat adjustment problems are solved, and a more efficient and comfortable seat adjustment effect is achieved.
Patent Information
- Application Number
- CN202411379108.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-10-02
- Filing Date
- 2024-09-30
- Publication Date
- 2025-04-04
AI Technical Summary
The adjustment of existing vehicle seats between upright and horizontal bed positions is not flexible and comfortable enough, and there are problems of complexity and high material consumption.
A seat including a seat support structure and an tilting mechanism is designed. The tilting mechanism moves the seat support structure between the upright and horizontal bed positions through the first and second connecting rod mechanisms. The connecting rod mechanism remains unconnected in the upright position and enters the coupled state after actuation to achieve adjustment.
The uniform and smooth adjustment of the seat between the upright and horizontal bed positions is achieved, reducing the number of drive units, reducing the complexity and weight of the seat, and improving the user experience.
Smart Images
Figure CN119749374A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a seat, in particular a vehicle seat, comprising at least a seat support structure and a tilt mechanism designed to move the seat support structure between an upright seat position and at least a horizontal bed position. Background Art
[0002] Widely adjustable, in particular tiltable seats are known from the prior art, for example transport vehicle seats or aircraft passenger seats. The vehicle seat comprises, for example, at least a seat pan and a backrest, wherein the backrest is pivotably connected to the seat pan. The backrest can be connected to the seat pan via a driven tilt mechanism. Furthermore, the vehicle seat can include a track assembly for adjusting the vehicle seat in the longitudinal direction. Summary of the invention
[0003] The object of the present disclosure is to provide an improved seat, in particular a vehicle seat, which is easily adjustable between at least one upright starting seat position (such as a boarding and disembarking position) and at least one horizontal bed position in which the seat pan and backrest form an extended lying surface. In particular, the object of the present disclosure is to provide a sturdy, less complex and user-friendly seat, which includes a tilt mechanism designed to convert the seat extremely comfortably throughout the entire seat adjustment range of movement.
[0004] Preferred embodiments of the invention can be found in the dependent claims.
[0005] In order to achieve the above-mentioned object, the present invention is characterized by a seat, in particular a vehicle seat, which comprises at least a seat support structure and a tilt mechanism, the seat support structure comprising at least a fixed base element, a seat pan and a backrest, the seat pan and the backrest being adjustable relative to the base element, and the tilt mechanism being designed to move the seat support structure between an upright seat position and at least a horizontal bed position. The tilt mechanism comprises a first link mechanism and a second link mechanism, the seat pan being coupled to the base element via the first link mechanism and the backrest being coupled to the base element via the second link mechanism, wherein the two link mechanisms are held in an uncoupled state relative to each other in the upright seat position, and when the tilt mechanism is actuated, the two link mechanisms adopt a coupled state in order to convert the seat support structure to the horizontal bed position.
[0006] The invention achieves the advantage that the seat adjustment movement is uniform and smooth when the seat support structure (i.e. the seat pan and the backrest) is transferred from the upright seat position to the horizontal bed position. The linkage can be brought into a coupled state in order to perform combined movements, in particular adjustment movements. In one possible embodiment, fewer drive units, such as motor units for actuating the linkage, are therefore required.
[0007] Due to the large number of adjustment options, the seat support structure, such as the subframe, is often very complex, which leads to high material consumption and high production costs for such seats.
[0008] The seat according to the invention comprises two linkage mechanisms which, in the upright seat position, are held in an uncoupled state relative to one another and which adopt a coupled state when the tilt mechanism is actuated in order to transform the seat support structure into a horizontal bed position, wherein the seat can be designed in a substantially compact manner, with a low weight and in an optimized manner in terms of components.
[0009] The tilt mechanism may comprise only one drive unit coupled to one of the linkages, wherein the linkage is moved by actuation of the drive of one of the linkages, so that it couples with the other linkage in order to perform a combined movement, in particular a tilt movement. It goes without saying that more than one drive unit may be used for the tilt mechanism, although this can be avoided.
[0010] In the case of a manually actuatable tilt mechanism, the tilt mechanism can be actuated by a single-hand actuation in order to rotate the seat support structure between the upright seat position and the horizontal bed position. The present invention provides an improved seat adjustment function. The tilt mechanism helps to raise the seat pan, such as a seat cushion, while the backrest is tilted at the same time. For example, the user can push or pull the backrest, i.e. the user can manually actuate the second linkage mechanism in order to achieve a combined adjustment movement of the seat pan and the backrest from the upright seat position to the horizontal bed position and vice versa. The tilt mechanism is configured to return the seat support structure from the horizontal bed position to the upright seat position, which can also be embodied as a combined adjustment movement, which is driven, for example, by a drive unit and / or a single-hand actuation.
[0011] The linkage mechanism may be designed to simultaneously move the seat pan and backrest in a coupled state. The seat pan and backrest are adjustable and movable between an upright seat position, at least one reclined intermediate position, and a horizontal bed position in a comfortable and uniform manner.
[0012] The upright seat position may be a starting position in which the backrest may be arranged substantially vertically relative to the seat pan. For example, the axis passing through the backrest may be arranged at an angle of approximately 3° to 17° to the vertical axis. The inclined intermediate position may be a comfort position in which the backrest may be arranged in a more inclined position relative to the seat surface. For example, the axis passing through the backrest may be arranged at an angle of approximately 17° to less than 80° to the vertical axis. The horizontal bed position may be a sleeping or lying position in which the backrest forms a substantially horizontal plane with the seat surface. In this case, the axis passing through the backrest may be arranged at an angle of approximately 85° to 90° to the vertical axis. In particular, the axis passing through the backrest may be arranged substantially parallel to the horizontal axis and form a horizontal lying plane with the seat pan.
[0013] The linkage mechanism may be designed to raise the seat pan about a first horizontal pivot axis and tilt the backrest about a second horizontal pivot axis in the coupled state. The first horizontal pivot axis may be different from the second horizontal pivot axis.
[0014] A first horizontal pivot axis of the seat pan can be defined by a fixed swivel joint arranged in the front part of the seat pan. The front fixed swivel joint can be coupled to the base element and / or can be arranged on the base element. A second horizontal pivot axis of the backrest can be defined by a fixed swivel joint, which can be arranged on the base element and / or coupled to the base element, for example in the region of a crossbar and / or a mounting device, for example in the region of a common tilting system. The fixed swivel joint belongs to a fixed position on the base element.
[0015] The tilt mechanism may be designed such that the coupled state of the linkage mechanism is achieved by actuation of the second linkage mechanism relative to the base element, such as manual actuation and / or motor-driven actuation.
[0016] The drive unit may be coupled to a fixed swivel joint and / or a crossbar and / or a mounting device of the backrest. Due to the rotation of the fixed swivel joint, the second linkage may pivot about the fixed swivel joint, which defines a horizontal pivot axis. As an alternative or option, the backrest may further comprise an actuation element, such as an actuation lever, which a user may pull to actuate the movement of the second linkage.
[0017] The linkage mechanism may include coupling elements that are spaced apart from each other at the ends of the linkages of the linkage mechanism in an uncoupled state and engage with each other in a coupled state. The coupling elements may be configured as corresponding latching elements, clamping elements, protruding lugs and recesses that can releasably engage with each other.
[0018] For example, the connecting rod mechanisms are separated from each other in the uncoupled state. In particular, the connecting rod mechanisms are completely mechanically decoupled from each other in the uncoupled state. In other words: the connecting rod mechanisms are decoupled from each other in a non-guided manner.
[0019] The first linkage mechanism may include at least one first coupling element, which is movably guided in a guide element arranged on the fixed base element. The second linkage mechanism may include at least one second coupling element having a receiving portion, which in the coupled state is in contact with, in particular engaged with, the first coupling element. Furthermore, the second linkage mechanism may include a third coupling element having a receiving portion, which in the coupled state is in contact with, in particular engaged with, the first coupling element.
[0020] The contact or engagement of the second coupling element with the first coupling element can, for example, initiate the movement of the first linkage when the second linkage is actuated from the upright seat position and / or the inclined intermediate position, in particular to the horizontal bed position. The contact or engagement of the third coupling element with the first coupling element can, for example, initiate the movement of the first linkage when the second linkage is actuated from the horizontal bed position, in particular to the inclined intermediate position and / or the upright seat position.
[0021] The tilt mechanism may be designed to displace the first coupling element along the guide element by moving the second coupling element and optionally additionally the third coupling element, thereby converting the seat supporting structure from one position to the other.
[0022] The tilt mechanism may include a free run area between the linkages, by means of which the backrest can be tilted from the upright seat position to a tilted intermediate position before the linkage enters the coupled state to convert the seat support structure to the horizontal bed position. The free run area may be a predetermined spacing between the second coupling element and the third coupling element of the optionally additional second linkage and the first coupling element of the first linkage.
[0023] At an inclination of the backrest of about 65° to 80°, for example about 78°, the coupling elements of the two linkages, for example, come into contact, in particular engage, with the result that the backrest and the seat pan remain level (level out) on a sleeping or lying bed surface, in particular in a horizontal bed position. This means that the backrest can be tilted up to 65° to 80° without a combined movement of the seat pan in order to assume an inclination intermediate position, in particular a comfortable inclination position. The seat pan can remain in its original upright seat position. Further movement of the backrest towards its horizontal bed position causes the linkages to come into contact with each other, so that the seat pan is raised by the movement of the backrest to assume the horizontal bed position.
[0024] The first linkage may include two fixed swivel joints between which a first number of relatively pivotable link members are arranged, wherein the fixed swivel joints couple the seat pan to the base element.
[0025] The second linkage may include a fixed swivel joint coupling the backrest to the base element, and a second number of pivotable linkage members pivotable about the fixed swivel joint.
[0026] The link member may be a link or a rod, etc. The first link mechanism may be arranged at a rear side of the seat pan.
[0027] Further scope of applicability of the present invention and advantageous embodiments that can be used alone or in combination with each other will become apparent from the following detailed description. However, it goes without saying that although the detailed description and specific examples indicate preferred embodiments of the present invention, they are only for illustration, because various changes and modifications within the spirit and scope of application of the present invention will be clear to those skilled in the art based on this detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The present invention will be better understood through the following description and the accompanying drawings, which are only used for illustration and do not limit the present invention. In the accompanying drawings:
[0029] Figure 1 : shows a seat in the prior art, particularly a vehicle seat;
[0030] Figure 2 : shows a seat according to a first embodiment, which includes a seat support structure and a tilt mechanism to move the seat support structure between an upright seat position and at least a horizontal bed position;
[0031] Figure 3 : Shows the basis in the middle position of the tilt Figure 2 Seats;
[0032] Figure 4 : Shows the horizontal bed position according to Figure 3 Seats;
[0033] Figure 5 : shows a reclining mechanism according to a second embodiment, which includes two link mechanisms, which are in an uncoupled state in the upright seat position of the seat;
[0034] Figure 6 :shows the Figure 5 Possible movement sequences of the tilting mechanism;
[0035] Figure 7 : Shows the seat in the upright position Figure 5 The tilt mechanism;
[0036] Figure 8 : Shows the basis in the middle position of the tilt Figure 5 A tilt mechanism; and
[0037] Fig. 9 : Shows the horizontal bed position according to Figure 5 The tilt mechanism.
[0038] Corresponding parts are identified by the same reference numerals throughout the Figures. DETAILED DESCRIPTION
[0039] The following describes the three spatial axes or directions extending perpendicular to each other. Figure 1 Schematically shown in the prior art vehicle seat 100. The longitudinal axis x extends horizontally and preferably parallel to the longitudinal direction of a vehicle having the vehicle seat 100 installed in the vehicle. The longitudinal direction corresponds to the usual driving direction of the vehicle. The transverse axis y is likewise oriented horizontally in the vehicle and extends perpendicularly to the longitudinal direction and parallel to the transverse direction of the vehicle. The vertical axis z extends perpendicularly to the longitudinal direction and perpendicularly to the transverse direction. When the vehicle seat 100 is installed in the vehicle, the vertical axis z preferably extends parallel to the vertical direction of the vehicle.
[0040] The position and direction designations used, such as front, rear, top and bottom, relate to the viewing direction of a passenger sitting in an upright seat position 150 (e.g. a normal seat position on the vehicle seat 100), wherein the vehicle seat 100 is installed in a vehicle in a use position suitable for the transportation of passengers, with the backrest being an upright backrest 104, wherein the vehicle seat 100 is usually oriented in the direction of travel. However, the vehicle seat 100 can also be installed or moved in a different orientation, for example transversely to the direction of travel. Unless otherwise stated, the vehicle seat 100 is designed mirror-symmetrically with respect to a plane extending perpendicularly to the transverse direction y.
[0041] The backrest 104 can be arranged pivotably on a seat pan 102 of the vehicle seat 100. To this end, the vehicle seat 100 can optionally include a mounting device 106, in particular an adjustment fitting, a pivot fitting, a latch fitting or a swing fitting.
[0042] The position and direction designations used, such as radial, axial and circumferential, are related to the rotation axis 108 of the assembly 106. Radial refers to perpendicular to the rotation axis 108; axial refers to a direction along the rotation axis 108 or parallel thereto.
[0043] The vehicle seat 100 may optionally include a longitudinal adjustment device 110. The longitudinal adjustment device 110 has, for example, a track assembly 112 having a first track element 114 and a second track element 116. The first track element 114 is adjustable in the longitudinal direction relative to the second track element 116. The first track element 114 is attached to the seat pan 102. The second track element 116 is attached to a structural element of the vehicle, for example to the vehicle floor.
[0044] For the sake of clarity, in the following description, the first rail element 114 is referred to as an upper rail 114. This upper rail 114 (also referred to as a slide rail or a slider) is assigned to the vehicle seat 100 and is designed to support the vehicle seat 100. The second rail element 116 is also referred to as a lower rail 116. The lower rail 116 is fixed in place and, for example, is connected to the floor of the vehicle.
[0045] The known vehicle seat 100 with the mounting device 106 is designed such that the mounting device 106, in particular its rotation axis 108, the seat pan 102 and the backrest 104 are coupled to one another. The backrest 104 can be pivoted about the rotation axis 108. The seat pan 102 can be stationary relative to the rotation axis 108.
[0046] Furthermore, the known fixed seat pan 102 comprises a front portion 118, for example a cushioned front portion, which is elevated and / or protruding relative to the horizontal center surface of the seat pan 102. Such a front portion 118 can form a thigh support, in particular a front bolster and / or a side bolster. Alternatively or additionally, the front portion 118 of the seat pan 102 supporting the thighs of the passenger can be arranged in an elevated and / or angled manner relative to a lower rear portion 120 supporting, for example, the buttocks of the passenger.
[0047] In order to provide greater comfort to the passenger, it is desirable to provide a seat 1000 as described below, which can occupy a horizontal bed position 152, in which the seat pan 102 and backrest 104 can form a substantially horizontal lying or sleeping surface, such as Figure 4 , Figure 6 and Fig. 9 For greater comfort, it is desirable to provide a movable, e.g. pivotable, in particular raisable seat pan 102. It is particularly desirable to provide a movable, e.g. pivotable, in particular raisable rear portion 120 of the seat pan 102, while the thigh support function of the front portion 118 is maintained when the seat 1000 is arranged in the upright seat position 150.
[0048] Figure 2 A seat 1000 is shown according to a first embodiment that includes a seat support structure 130 and a tilt mechanism 200 to move the seat support structure 130 between an upright seat position 150 and at least a horizontal bed position 152 .
[0049] The seat support structure 130 includes a backrest 104 and a seat pan 102. The seat support structure 130 may be a seat frame structure. The seat support structure 130 may include a backrest frame that carries a cushioning portion that forms a cushioned backrest 104. The seat support structure 130 may include a seat pan frame that carries a cushioning portion that forms a cushioned seat pan 102.
[0050] In addition, the seat support structure 130 includes a fixed base element 140. The fixed base element 140 can be a base structure, which, for example, supports the seat support structure 130 on the vehicle floor, vehicle structure and / or track assembly 112 or connects it to the vehicle floor, vehicle structure and / or track assembly 112. The fixed base element 140 can be a frame structure. The fixed base frame 140 can include a fixed rear base 142. The fixed base frame 140 can include a fixed front base 144. The fixed bases 142, 144 can be vertically extending frame elements, which connect the seat pan 102 to the vehicle floor, vehicle structure and / or track assembly 112, in particular to the movable first track element 114. The bases 142, 144 can be connected together via horizontally extending bases and / or frame elements that are not shown in more detail.
[0051] The reclining mechanism 200 includes a first linkage 210 coupling the seat pan 102 to the base element 140 and a second linkage 220 coupling the backrest 104 to the base element 140 , wherein in the upright seating position 150 the two linkages 210 , 220 are held in an uncoupled state 202 relative to one another.
[0052] Upon actuation of the linkage mechanisms 210, 220, i.e., actuation of the first linkage mechanism 210 or the second linkage mechanism 220, the actuated linkage mechanisms 210, 220 may be continuously moved from the upright seat position 150 to the horizontal bed position 152. On a path along a predetermined adjustment route, such as at an adjustment angle, the linkage mechanisms 210, 220 may be maintained in the uncoupled state 202, such that the backrest 104 may be tilted from the upright seat position 150 to at least one tilted intermediate position 154 without affecting the position of the seat pan 102.
[0053] exist Figure 3 , Figure 6 and Figure 8In the illustrated tilted intermediate position 154, for example, the linkages 210, 220 may adopt a coupled state 204. In the coupled state 204, the two linkages 210, 220 are coupled together, i.e., coupled to each other, such that further actuation, i.e., movement of the same linkage 210, 220 as a previous actuation, results in a joint or combined movement of the two linkages 210, 220 to the horizontal bed position 152. The actuation may be motor driven and / or manual.
[0054] Therefore, it may be sufficient to provide the tilt mechanism 200 with a single drive unit 230 or a single actuator in order to adjust the seat support structure 130 from its upright seat position 150 to the horizontal bed position 152 and vice versa according to arrow 231. In order to successfully tilt the seat support structure 130, it is also sufficient that the seat pan 102 or the backrest 104 can be manually actuated, for example, by moving, pulling or pushing the seat pan 102 and the backrest 104 in order to fully adjust the seat support structure 130 from its upright seat position 150 to the horizontal bed position 152 and vice versa according to arrow 231.
[0055] The first linkage 210 may include a first fixed swivel joint 212, which is fastened to the base element 140 in the region of the front base 144. The first linkage 210 may include a second fixed swivel joint 214, which is fastened to the base element 140 in the region of the rear base 142. Figures 4 to 9 , the second fixed rotary joint 214 is shown in an uncovered manner. The first linkage 210 may include a first number of relatively pivotable linkage members 216a to 216d, which are also referred to as rods and are arranged between the fixed rotary joints 212 and 214. The linkage members 216a to 216d are connected together via a plurality of rotary joints 218a to 218d. The first linkage 210 may be a so-called multi-member linkage, such as a four-member linkage, a five-member linkage or a six-member linkage. In this embodiment, the first linkage 210 is in the form of a four-member linkage. The second linkage 220 is in the form of a single linkage arm or a single linkage lever.
[0056] The first link member 216a is movably connected to the base element 140 via a first swivel joint 218a, in particular in the area of the rear base 142. The second link member 216b is pivotably connected to the first link member 216a via a second swivel joint 218b. The second link member 216b can be, for example, a substantially L-shaped link plate, which is designed to pivotally connect the link members 216a to 216d to the second fixed swivel joint 214. The third link member 216c is pivotably connected to the second link member 216b and the fourth link member 216d. The third link member 216c is connected to the second link member 216b via a third swivel joint 218c. The fourth link member 216d connects the link members 216a to 216d to the first fixed swivel joint 212. The fourth link member 216d is connected to the third link member 216c via a fourth swivel joint 218d.
[0057] The second linkage 220 may include a fixed swivel joint 222, which is fastened to the base element 140 in the area of the rear base 142. The fixed swivel joint 222 may be provided by a known crossbar (not shown in more detail), which connects two structural sides of the seat support structure 130, such as frame sides. The second linkage 220 may include a second number of pivotable link members 224a, 224b that are pivotable around the fixed swivel joint 222. In the embodiment shown, the second linkage 220 includes a first link member 224a that defines a backrest surface. The second linkage 220 includes a second link member 224b, which is coupled to the lower side of the first link member 224a. The link members 224a, 224b may be in the form of a single component, which is in the form of a backrest frame and / or a backrest assembly component.
[0058] The linkage 210, 220 comprises corresponding coupling elements 310, 320, which are spaced apart from each other in the uncoupled state 202 and are engaged with each other in the coupled state 204. The first rotary joint 218a of the first linkage 210 can form the first coupling element 310. The first coupling element 310 can be a pin protruding in the transverse direction. The second linkage 220 can include a second coupling element 320. The second coupling element 320 can be arranged on the opposite side of the backrest 104, in particular on the lower side. The second coupling element 320 can be fixedly arranged on one of the linkage members 224a, 224b. In the second embodiment, the second coupling element 320 is arranged on the second linkage member 224b and is in the form of a protruding lug or nose. The second coupling element 320 can protrude radially relative to the fixed rotary joint 222. The linkage members 224a, 224b are fastened to each other.
[0059] The base element 140, in particular the rear base 142, may include a guide element 146. The guide element 146 may be disposed on the upper side of the base element 140, in particular the upper side of the rear base 142. The guide element 146 may have a bent or curved shape. The guide element 146 may be bent or curved so that the midpoint of the bent portion or curved portion may be coaxially arranged with the fixed swivel joint 222.
[0060] The first coupling element 310, in particular the first swivel joint 218a, is movably guided in a guide element 146 arranged on the fixed base element 140. The guide element 146 may be a slot, in particular an elongated hole, which forms a sliding fixation for the first coupling element 310. The second coupling element 320 may include a receiving portion 322, which in the coupled state engages with the first coupling element 310. The tilt mechanism 200 is designed to convert the seat pan 102 and the backrest 104 from one position 150 to another position 154, in that the first coupling element 310 is displaced along the guide element 146 by the movement of the second coupling element 320 when the coupling elements 310, 320 are in the coupled state 204.
[0061] The reclining mechanism 200 may include a free run area 240 between the first coupling element 310 and the second coupling element 320 so that the backrest 104 may be tilted from the upright seating position 150 to the reclined intermediate position 154 before the coupling elements 310, 320 are engaged in the coupled state 204 to transfer the seat pan 102 and the backrest 104 to the horizontal bed position 152. The free run area 240 may define a spacing between the first coupling element 310 and the second coupling element 320 in which the two coupling elements 310, 320 may be in the uncoupled state 202.
[0062] Figure 3 Shown according to Figure 2 The seat 1000 is in the reclined intermediate position 154 .
[0063] The tilt mechanism 200 is designed so that the coupling state 204 of the linkages 210, 220 is achieved by actuation of the second linkage 220 relative to the base element 140 (e.g. manual actuation and / or motor-driven actuation). The second linkage 220 can be coupled to a drive unit 230. The drive unit 230 can be a tilt drive or actuator. The drive unit 230 can be coupled to a fixed rotary joint 222 so as to pivot the linkage members 224a, 224b. Due to the rotation of the fixed rotary joint 222, for example the rotation of the backrest assembly or assembly rod and / or the linkage members 224a, 224b, the second linkage can pivot around the fixed rotary joint 222, which defines a second horizontal pivot axis y2, which extends, for example, parallel to the transverse axis y.
[0064] The linkage 210 , 220 is designed in the coupled state 204 to raise the seat pan 102 about a first horizontal pivot axis y1 , which extends, for example, parallel to the transverse axis y.
[0065] Figure 4 Shown according to Figure 3 The seat 1000 is in the horizontal bed position 152.
[0066] The link mechanisms 210, 220 are specifically designed to raise the seat pan 102 by raising the third link member 216c and the fourth link member 216d. Figure 4 As shown. As a result, the rear portion 120 of the seat pan 102 can be raised in a continuously moving manner while maintaining the thigh support function of the front portion 118 of the seat pan 102. The fixed rotary joints 212, 214 of the first link mechanism 210 are spaced apart from each other in the vertical direction and the longitudinal direction. The first to third link members 216a to 216c are arranged below the rear portion 120 of the seat pan 102. The link members 216a to 216d pivot relative to each other between the two fixed rotary joints 212, 214, so that both the rear portion 120 and the seat surface provided between the rear portion 120 and the front portion 118 of the seat pan 102 are raised relative to the first horizontal pivot axis y1.
[0067] In order to move the seat support structure 130 from the horizontal bed position 152 back to the upright seat position 150 or the tilted intermediate position 154, the second linkage 220 may include a third coupling element 330 having a receiving portion 332 which, during the return movement, contacts, in particular engages, with the first coupling element 310, i.e., with the first linkage 210. The tilt mechanism 200 is designed to shift the first coupling element 310 along the guide element 146 by moving the third coupling element 330, thereby transferring the seat pan 102 and the backrest 104 from the horizontal bed position 152 to the tilted intermediate position 154 and / or the upright seat position.
[0068] Alternatively or optionally in addition, the first linkage 210 may be under spring preload so that when the second coupling element 320 moves away from the first coupling element 310, the first coupling element 320 and thus the first linkage 310 follows the return movement by the spring force. The third coupling element 330 may not be required.
[0069] Figure 5 A reclining mechanism 200 according to a second embodiment is shown comprising two linkages 210 , 220 in an uncoupled state 202 in the upright seat position 150 of the seat 1000 .
[0070] The tilt mechanism 200 includes a first linkage 210 coupling the seat pan 102 to the base element 140 and a second linkage 220 coupling the backrest 104 to the base element 140, wherein in the upright seat position 150, the two linkages 210, 220 are held in an uncoupled state 202 relative to each other. When one of the linkages 210, 220, i.e., the first linkage 210 or the second linkage 220, is actuated, the actuated linkages 210, 220 can be simultaneously moved from the upright seat position 150 to the horizontal bed position 152.
[0071] The first linkage 210 may be a so-called multi-member linkage, such as a four-member linkage, a five-member linkage, or a six-member linkage.
[0072] The second linkage 220 may include a fixed swivel joint 222, which is fastened to the base element 140 in the area of the rear base 142. In the illustrated embodiment, the second linkage 220 includes a first linkage member 224a that defines a backrest surface. The second linkage 220 includes a second linkage member 224b, which is coupled to the lower side of the first linkage member 224a. The linkage members 224a, 224b may be in the form of a single component, which is in the form of a backrest frame and / or backrest assembly component. The linkages 210, 220 include respective coupling elements 310, 320, which are spaced apart from each other in the uncoupled state 202 and are engaged with each other in the coupled state 204.
[0073] The first rotary joint 218a of the first linkage 210 may form a first coupling element 310. The first coupling element 310 may be a pin protruding in the transverse direction. The second linkage 220 may include a second coupling element 320. The second coupling element 320 may be fixedly arranged on one of the linkage members 224a, 224b. In the illustrated embodiment, the second coupling element 320 is arranged on the second linkage member 224b and is in the form of a socket. The second coupling element 320 may be a recess formed in the second linkage member 224b. The second linkage member 224b protrudes from the fixed rotary joint 222. The linkage members 224a, 224b are fastened to each other.
[0074] Figure 6 Shown according to Figure 5 Possible movement sequences of the tilt mechanism 200.
[0075] The upright seat position 150 may be a starting position in which the backrest 104 may be arranged substantially perpendicular to the seat pan 102. The first link member 224a may be arranged, for example, at a first angle α1 of approximately 3° to 17° (more or less) with the vertical axis z. The tilted intermediate position 154 may be a comfort position in which the backrest 104 may be arranged in a more tilted position relative to the seat pan 102. The first link member 224a may be arranged, for example, at a second angle α2 of approximately 17° to less than 80° with the vertical axis z. The horizontal bed position 152 may be a sleeping or lying position in which the backrest 104 forms a substantially horizontal plane with the seat pan 102. In this case, the first link member 224a may be arranged at a third angle α3 of approximately 85° to 90° with the vertical axis z. In the upright seat position 150, the seat pan 102 may be arranged substantially parallel to the vehicle floor. The seat pan 102 can pivot about the first fixed swivel joint 212 from the upright seat position 150 to the horizontal bed position 152 at an angle β1 between about 5° and 20°. It goes without saying that the angle range is intended only for better understanding, but not limiting thereto.
[0076] In addition, the movement paths 412 to 418 of the link members 216a to 216d and / or the swivel joints 218a to 218d of the first linkage mechanism 210 from the upright seat position 150 to the horizontal bed position 152, and vice versa, are marked by dashed lines. In addition, the movement paths 422 and 424 of the link members 224a, 224b of the second linkage mechanism 220 are marked by dashed lines.
[0077] The first movement path 412 is associated with the movement of the first rotation joint 218a and at least one coupled link member 216a to 216d. The second movement path 414 is associated with the movement of the second rotation joint 218b and at least one coupled link member 216a to 216d. The third movement path 416 is associated with the movement of the third rotation joint 218c and at least one coupled link member 216a to 216d. The fourth movement path 418 is associated with the movement of the fourth rotation joint 218d and at least one coupled link member 216a to 216d.
[0078] The fifth movement path 422 is associated with movement of the link members 224a, 224b of the second linkage member 220 relative to the fixed rotation joint 222 from the upright seat position 150 to the reclined intermediate position 154. The sixth movement path 424 is associated with movement of the link members 224a, 224b of the second linkage mechanism 220 relative to the fixed rotation joint 222 from the upright seat position 150 to the horizontal bed position 152.
[0079] Figure 7The reclining mechanism 200 is shown in the upright seating position 150, Figure 8 The tilted intermediate position 154 is shown according to Figure 5 The tilt mechanism 200, and Fig. 9 The horizontal bed position 152 is shown according to Figure 5 The tilting mechanism 200 is provided.
[0080] The tilt mechanism 200 comprises a single drive unit 230 in order to adjust the vehicle seat 1000 from its upright seat position 150 to the horizontal bed position 152 and vice versa according to arrow 231. In order to successfully tilt the vehicle seat 1000, it is also sufficient that the seat pan 102 and / or the backrest 104 ( Figure 1 ), such as moving, pulling or pushing the seat pan 102 and / or the backrest 104 to fully adjust the vehicle seat 1000 from its upright seat position 150 to the horizontal bed position 152, and vice versa according to arrow 231.
[0081] The first linkage 210 comprises at least one first coupling element 310 which is movably guided in a guide element 146 which is arranged on the fixed base element 140 .
[0082] The first link mechanism 210 includes link members 216a to 216d connected together in an articulated manner, wherein the first link member 216a acts as a driving member. The other link members 216b to 216d are in the form of output members, in particular, rotating rods or rotating levers.
[0083] The second linkage 220 comprises at least one second coupling element 320 having a receiving portion 322, which in the coupled state 204 is in contact with, in particular engaged with, the first coupling element 310, such as Figure 8 In the tilted intermediate position 154, the coupled state 204 is adopted.
[0084] Due to the contact or engagement of the second coupling element 320 with the first coupling element 310, for example, when the second linkage mechanism 220 is actuated from the tilted intermediate position 154, in particular moved to the horizontal bed position 152, the movement of the first linkage mechanism 210 can be initiated. The tilt mechanism 200 can be designed to transform the seat support structure 130 by moving the second coupling element 320 to displace the first coupling element 310 along the guide element 146.
[0085] For example, the linkage mechanisms 210, 220 are separated from each other in the uncoupled state 202 ( Figure 7). In particular, the linkages 210, 220 are completely mechanically decoupled from each other in the uncoupled state 202. In other words: the linkages 210, 220 are spaced apart from each other in a non-guided manner and decoupled from each other.
[0086] The tilt mechanism 200 may include, in the uncoupled state 202, for example, a free running region 240 ( Figure 7 204 ), so that the backrest 104 can be tilted from the upright seat position 150 to the tilted intermediate position 154 before the coupling elements 310, 320 are engaged in the coupled state 204 to transfer the seat pan 102 and the backrest 104 to the horizontal bed position 152. The free run area 240 can define a spacing between the first coupling element 310 and the second coupling element 320 in which the two coupling elements 310, 320 can be in the uncoupled state 202.
[0087] Reference numerals list
[0088] 100, 1000 seats
[0089] 102 Seat pan
[0090] 104 Backrest
[0091] 106 Assembly device
[0092] 108 Rotation axis
[0093] 110 Longitudinal adjustment device
[0094] 112 Track Components
[0095] 114 First track element (upper track)
[0096] 116 Second track element (lower track)
[0097] 118 front
[0098] 120 Rear
[0099] 130 Seat support structure
[0100] 140 Base element
[0101] 142, 144 base
[0102] 146 Guide element
[0103] 150 position, especially upright seat position
[0104] 152 Position, especially horizontal bed position
[0105] 154 position, especially the tilted middle position
[0106] 200 Tilt mechanism
[0107] 202 Not Connected
[0108] 204 Connection Status
[0109] 210 Linkage, especially the first linkage
[0110] 212 fixed rotary joint, especially the first fixed rotary joint
[0111] 214 Fixed rotary joint, especially the second fixed rotary joint
[0112] 216a-216d Connecting rod components
[0113] 218a-218d Rotary Joint
[0114] 220 Linkage, especially the second linkage
[0115] 222 Fixed swivel joint
[0116] 224a-224b Connecting rod member
[0117] 230 drive unit
[0118] 231 Arrow
[0119] 240 Free running area
[0120] 310 coupling element, in particular first coupling element
[0121] 320 coupling element, in particular a second coupling element
[0122] 322 Receiving part
[0123] 330 coupling element, in particular the third coupling element
[0124] 332 Receiving part
[0125] 412-424 Movement Path
[0126] α1-α3, β1 angle
[0127] y1, y2 horizontal pivot axis
[0128] x longitudinal axis
[0129] y horizontal axis
[0130] z vertical axis
Claims
1. A seat (100, 1000), in particular a vehicle seat, comprising at least the following components: A seat support structure (130) comprising at least a fixed base element (140), a seat pan (102) and a backrest (104), the seat pan and backrest being adjustable relative to the base element (140), and a tilt mechanism (200) designed to move the seat support structure (130) between an upright seat position (150) and at least a horizontal bed position (152), Features: The tilt mechanism (200) includes a first linkage (210) by which the seat pan (102) is coupled to the base element (140), and a second linkage (220) by which the backrest (104) is coupled to the base element (140). The two linkages (210, 220) are or have been maintained in an uncoupled state (202) relative to each other in the upright seat position (150), and when the tilt mechanism (200) is actuated, the two linkages adopt a coupled state (204) in order to convert the seat support structure (130) to the horizontal bed position (152).
2. The seat (100, 1000) according to claim 1, characterized in that: The linkage mechanism (210, 220) is designed to move the seat pan (102) and the backrest (104) simultaneously in the coupled state (204).
3. The seat (100, 1000) according to claim 1 or 2, characterized in that: The linkage (210, 220) is designed in the coupled state (204) to raise the seat pan (102) about a first horizontal pivot axis and to tilt the backrest (104) about a second horizontal pivot axis, wherein the first horizontal pivot axis is different from the second horizontal pivot axis.
4. The seat (100, 1000) according to any one of the preceding claims, characterized in that The tilt mechanism (200) is designed such that a coupled state (204) of the linkage mechanisms (210, 220) can be established by actuating the second linkage mechanism (220) relative to the base element (140).
5. The seat (100, 1000) according to any one of the preceding claims, characterized in that The link mechanisms (210, 220) are separated from each other in the uncoupled state (202).
6. The seat (100, 1000) according to any one of the preceding claims, characterized in that The linkage mechanisms (210, 220) are completely mechanically decoupled from each other in the uncoupled state (202).
7. The seat (100, 1000) according to any one of the preceding claims, characterized in that The linkage mechanism (210, 220) includes coupling elements (310, 320) which are spaced apart from each other in the uncoupled state (202) and are engaged with each other in the coupled state (204).
8. The seat (100, 1000) according to claim 7, characterized in that: The first linkage (210) comprises at least one first coupling element (310), which is movably guided in a guide element (146) arranged on the fixed base element (140), and the second linkage (220) comprises at least one second coupling element (320) having a receiving portion (322) which engages with the first coupling element (310) in the coupled state (204).
9. The seat (100, 1000) according to claim 8, characterized in that: The tilt mechanism (200) is designed to shift the first coupling element (310) along the guide element (146) by moving the second coupling element (320), thereby converting the seat support structure (130) from one position to another position.
10. The seat (100, 1000) according to any one of the preceding claims, characterized in that The tilt mechanism (200) includes a free running area (240) between the linkages (210, 220) by which the backrest (104) can be tilted from the upright seat position (150) to a tilted intermediate position (154) before the linkages (210, 220) enter the coupled state (204) to shift the seat support structure (130) to the horizontal bed position (152).
11. The seat (100, 1000) according to any one of the preceding claims, characterized in that The first linkage (210) includes two fixed swivel joints (212, 214) between which a first number of relatively pivotable link members (216a to 216d) are arranged, wherein the fixed swivel joints (212, 214) couple the seat pan (102) to the base element (140).
12. The seat (100, 1000) according to any one of the preceding claims, characterized in that The second linkage (220) includes a fixed swivel joint (222) coupling the backrest (104) to the base element (140), and a second number of pivotable link members (224a, 224b) pivotable about the fixed swivel joint (222).