Device for providing fatigue relief positions for vehicle seats

Abstract

This invention provides a device for providing a fatigue-relieving position for vehicle seats. A first latching unit is mounted on the rear seat cushion such that a first impact member mounted on the front seat back is lockably secured to the first latching unit; a second latching unit is mounted on the rear surface portion of the rear seat back. A sliding locking unit is height-adjustably mounted on a sealing panel disposed behind the rear seat. A second impact member is disposed at the front end of the sliding locking unit, thereby lockably securing to the second latching unit. The second or third row of seats in the vehicle cabin can be detached from their initial position to be fixed like a hammock between the front seat and the sealing panel, providing a fatigue-relieving position for comfortable rest for the occupant.

Description

Technical Field

[0001] This invention generally relates to devices for providing fatigue-relieving positions for vehicle seats. More specifically, the invention relates to devices for providing fatigue-relieving positions for vehicle seats, such that second- or third-row seats can be fixed in place within the vehicle cabin like hammocks to provide fatigue-relieving positions where passengers can rest comfortably. Background Technology

[0002] Typically, vehicle seats have basic components, such as a seat cushion for the lower body of the occupant, a seat back for the upper body of the occupant, a headrest for supporting the neck and head, and various seat adjustment devices and convenience devices arranged inside and outside the seat. Furthermore, there is a need for a seating mechanism that allows the seat position to be freely adjusted according to the occupant's body shape or condition.

[0003] Vehicle seats generally have a reclining mechanism that allows occupants to rest or sleep. However, a drawback is that it's impossible to evenly distribute pressure on the occupant's body using only the reclining mechanism. Therefore, it's difficult to establish a fatigue-relieving position. For reference, a fatigue-relieving position is one where changing the support angle of the occupant's upper body alters the support angle of the hips, thighs, calves, etc., to maximize the distribution of pressure on the occupant's body, thereby relieving fatigue and providing comfort.

[0004] Therefore, future autonomous vehicles require a solution that allows occupants to be in fatigue-relieving positions within the vehicle cabin during long journeys. Furthermore, seating mechanisms that provide comfortable and relaxing positions are needed to allow users to rest or sleep within the vehicle cabin, for applications such as vehicle camping.

[0005] The above statements are merely intended to help understand the background technology of the present invention, and are not intended to imply that the present invention falls within the scope of the prior art known to those skilled in the art. Summary of the Invention

[0006] Therefore, the present invention was made in consideration of the aforementioned problems in the background art, and aims to provide a device for providing a fatigue-relieving position for vehicle seats. This device detaches the second or third row seats in the vehicle cabin from their initial installation position and fixes them like a hammock between the front seats and the enclosed panel to provide a fatigue-relieving position where occupants can rest comfortably.

[0007] To achieve the above objectives, according to one aspect of the present invention, a device for providing a fatigue-relieving position for a vehicle seat is provided. The device may include: a first impact member mounted on a front seat back; a first latching unit mounted on a rear seat cushion, thereby locking the first impact member to the first latching unit in a lockable manner; a second latching unit mounted on a rear surface portion of the rear seat back; a sliding locking unit mounted in a height-adjustable manner on a sealing panel behind the rear seat; and a second impact member disposed at the front end of the sliding locking unit, thereby being locked to the second latching unit in a lockable manner.

[0008] The first latching unit can be installed at the front end of the rear seat cushion or at a lower position at the front end of the rear seat cushion, thereby locking the first impact member in a lockable manner. The second latching unit can be installed at the top end of the rear surface portion of the rear seat back. The first impact member can be installed on the upper surface of the front seat back where it is exposed when the headrest is separated from the front seat back, or at the top end of the rear surface of the front seat back.

[0009] The first impact member of the front seat backrest can be fastened to the first latching unit of the rear seat cushion, and the second impact member of the sliding locking unit mounted on the encapsulation panel is fastened to the second latching unit of the rear seat backrest, so that the rear seat is positioned and fixed between the front seat backrest and the encapsulation panel. The first impact member may have the shape of a quadrilateral ring and be mounted to a pivot bracket by welding or the like. The pivot bracket may be hinged or fastened to a fixed bracket fixedly mounted to the top of the rear surface portion of the front seat backrest, so that it is pivotable in the vertical direction.

[0010] The first latching unit may include: a control lever mounted at the front end of the rear seat cushion for pivoting when actuated by pulling; a protrusion extending from the inner surface portion of the control lever to pivot together with the control lever when the control lever pivots; a pair of first support brackets mounted at an internal position at the front end of the rear seat cushion; a first locking lever including a first pull end integrally disposed at its upper portion and a locking end integrally disposed at its rear portion, the first locking lever being axially arranged on the pair of first support brackets via a first rotation axis; a push rod connected to the first pull end of the first locking lever; and a second lock. A lever includes a capture end integrally disposed at its upper portion and a first locking recess disposed at its lower portion, the capture end being configured to be constrained by a locking end of a first locking lever, the first locking recess being configured to receive a first impact member inserted therein, wherein a second locking lever is axially arranged on the pair of first support brackets via a second rotation axis; a vertical bending lever connected to the protrusion and the push rod, wherein, when the control lever and the protrusion are rotated, the vertical bending lever rotates and pushes the push rod forward; and a first return spring connected to the first rotation axis and the second rotation axis.

[0011] A support plate supporting the vertical bending rod can be disposed on the rear side of the control rod. The support plate may have a groove, which defines the rotation angle and distance of the vertical bending rod.

[0012] The second latching unit may include: a pair of second support brackets mounted on the top of the rear surface of the rear seat back; a third locking lever including a cable connection end disposed at its upper part and a stop end disposed at its lower part, the cable connection end being connected to a pull cable and configured to be pulled, wherein the third locking lever is axially mounted to the pair of second support brackets via a third rotation axis; a fourth locking lever including a second pull end integrally disposed at its upper part and a second locking recess disposed at its lower part, the second locking recess receiving a second impact member inserted therein, wherein the fourth locking lever is axially mounted to the pair of second support brackets via a fourth rotation axis; and a second return spring connected to the second pull end of the third locking lever and the fourth locking lever.

[0013] The sliding locking unit may include: a track tube mounted on the encapsulation panel and arranged vertically; a slider assembled around the outer surface of the track tube to enable vertical movement; an elastic clamp having a circular tubular structure open on one side, the elastic clamp being located between the outer surface of the track tube and the inner surface of the slider; a pull plate integrally disposed at one end of the elastic clamp and extending toward the outer diameter portion of the slider; a stop integrally disposed on the outer surface of the slider to define the position of the pull plate before and after being pulled; and an operating cable connected to the pull plate and configured to be pulled.

[0014] Friction pads can be disposed on the inner surface of the elastic clamp to contact or separate from the track tube. When the control cable is actuated by being pulled, the elastic clamp can expand in the outer diameter direction while being pulled, thereby enabling the unlocking operation for releasing the elastic clamp so that it neither squeezes nor rubs against the track tube.

[0015] When the operation of pulling the control cable is stopped, the pull plate can move to the initial position, and at the same time, the elastic clamp retracts in the inner diameter direction due to the elastic restoring force, thereby performing a locking operation in which the elastic clamp presses against and rubs against the track tube. The sliding member can be equipped with a forward-protruding positioning plate, and the second impact member can be disposed at the front end of the positioning plate.

[0016] According to an exemplary embodiment of the present invention, the following effects can be obtained.

[0017] First, the second or third row seats can be detached from their original installation position and fixed in the vehicle cabin like a hammock to provide a fatigue-relieving position where occupants can rest comfortably.

[0018] Secondly, the second or third row seats can be detached from their initial installation position and fixed in the vehicle cabin like a hammock, allowing the seat cushion angle and backrest tilt angle of the detached rear seats to be adjusted by moving the sliding locking unit up and down. Therefore, various fatigue-relieving positions can be provided according to the occupants' intentions. Attached Figure Description

[0019] The above and other objects, features, and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a perspective view showing a first impact member of a device for providing a fatigue relief position according to the present invention, the first impact member being mounted on a front seat back.

[0021] Figure 2 This is a perspective view showing a first latching unit of a device for providing a fatigue relief position according to the present invention, the first latching unit being mounted on a rear seat cushion;

[0022] Figure 3 This is an enlarged perspective view showing a portion of the device according to the invention for providing a fatigue relief position, wherein the first latching unit and the first impact member are fastened to each other;

[0023] Figures 4A to 4C This is a side view illustrating the process of fastening the first latching unit and the first impact member in the components of the device for providing a fatigue relief position according to the present invention;

[0024] Figure 5 This is a schematic diagram showing a second latching unit in a component of a device for providing a fatigue relief position according to the present invention, the second latching unit being arranged on the back of a rear seat;

[0025] Figure 6 This is a perspective view showing a sliding locking unit in a component of a device for providing a fatigue relief position according to the present invention, the sliding locking unit having a second impact member, the sliding locking unit being mounted on an encapsulation panel behind the rear seat;

[0026] Figure 7 It is an enlarged perspective view showing the fastening of the second latching unit and the second impact member between the components of the device for providing fatigue relief position according to the present invention;

[0027] Figures 8A to 8C This is a side view showing the fastening process of the second latching unit and the second impact member in the components of the device for providing a fatigue relief position according to the present invention;

[0028] Figure 9 and Figure 10 This is a side view showing a rear seat arranged in a fatigue relief position according to the present invention via a device for providing a fatigue relief position;

[0029] Figure 11 This is a cross-sectional view showing the locking position of a sliding locking unit in a component of a device for providing a fatigue relief position according to the present invention;

[0030] Figure 12 This is a cross-sectional view showing the unlocked position of a sliding locking unit in a component of a device for providing a fatigue relief position according to the present invention. Detailed Implementation

[0031] It should be understood that the terms “vehicle” or “of a vehicle” or other similar terms used herein include general motor vehicles, such as passenger cars including sport utility vehicles (SUVs), buses, trucks, and various commercial vehicles, boats including various vessels and ships, and aircraft, etc., and include hybrid vehicles, electric vehicles, internal combustion engine vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from non-fossil energy sources).

[0032] While the exemplary embodiments are described as using multiple units to perform the exemplary processes, it should be understood that the exemplary processes may also be performed by one or more modules. Furthermore, it should be understood that the term "controller / control unit" refers to a hardware device including a memory and a processor, specifically programmed to perform the processes described herein. The memory is configured to store modules, and the processor is specifically configured to execute the modules to perform one or more processes described further below.

[0033] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms “a,” “an,” and “described” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, values, steps, operations, elements, and / or components, but do not exclude the presence or inclusion of one or more other features, values, steps, operations, elements, components, and / or groups thereof. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0034] Unless otherwise stated or obvious from the context, the term "approximately" as used herein is understood to mean within the normal tolerance range in the field, such as within an average of 2 standard deviations. "Approximately" can be understood as within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the specified value. Unless the context clearly indicates otherwise, all numerical values ​​provided herein are modified by the term "approximately".

[0035] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] In the attached diagram, Figure 1 This is a perspective view showing a first impact member 11 of a device for providing a fatigue relief position according to the present invention, the first impact member 11 being mounted on a front seat back 10. Figure 2 This is a perspective view showing a first latching unit 100 of a device for providing a fatigue relief position according to the present invention, the first latching unit 100 being mounted on a rear seat cushion 20. Figure 3 This is an enlarged perspective view showing a portion of a device according to the invention for providing a fatigue relief position, wherein the first latching unit 100 and the first impact member 11 are fastened to each other. Figure 3 In the middle, the following was omitted. Figure 2 The protective cover 130 in the middle.

[0037] like Figure 1 As shown, the first impact member 11 can be mounted on the upper surface of the front seat back 10 exposed when the headrest is separated from the front seat back 10, or at the top of the rear surface of the front seat back 10. Specifically, the fixed bracket 12 is fixedly mounted to the top of the rear surface of the front seat back 10. The pivot bracket 13 can be hinged or fastened to the fixed bracket 12 to pivotally rotate in the vertical direction. The first impact member 11 has the shape of a quadrilateral ring and is mounted to the pivot bracket 13 by welding or the like. Therefore, when the first impact member 11 is rotated while being pushed forward, the first impact member 11 can move to a non-use position (i.e., a parking position) where both the first impact member 11 and the pivot bracket 13 are in close contact with the rear surface portion of the fixed bracket 12. Conversely, when the first impact member 11 is rotated while being pulled backward, the first impact member 11 is unfolded to a use position to be fastened to the first latching unit 100.

[0038] like Figure 2 and Figure 3As shown, the first latching unit 100 (which allows the first impact member 11, mounted on the rear surface portion of the front seat back 10, to be locked in place) can be mounted on the front end of the rear seat cushion 20. Specifically, the first latching unit 100 can be mounted at a lower position at the front end of the rear seat cushion to lock the first impact member 11 in place.

[0039] A user-operated control lever 101 (as a component of the first latching unit 100) is pivotally mounted at a predetermined position at the front end of the rear seat cushion 20. Furthermore, a protrusion 102 is integrally provided on the inner surface of the control lever 101, such that when the control lever 101 pivots, the protrusion 102 pivots together with the control lever 101.

[0040] A pair of first support brackets 105 can be installed at the inner front end of the rear seat cushion 20, such that the first support brackets 105 are spaced apart from each other in the lateral direction. A first locking lever 110 can be rotatably mounted at the front position of the inner surface of each first support bracket 105, and a second locking lever 120 can be rotatably mounted at the rear position of the inner surface of each first support bracket 105.

[0041] The first locking lever 110 is configured such that a first pulling end 112 is integrally formed and a locking end 113 is integrally formed at the rear. The first locking lever 110 can be rotatably mounted at the front position of the inner surface of each first support bracket 105 via a first rotating shaft 111. The second locking lever 120 is configured such that a capturing end 122, which is restricted by the locking end 113, is integrally formed at its upper portion, and a first locking recess 123, which is configured to receive a first impact member 11 inserted therein, is formed at the lower portion of the second locking lever 120. Therefore, the second locking lever 120 can be rotatably mounted at the rear position of the inner surface of the first support bracket 105 via a second rotating shaft 121.

[0042] Specifically, push rod 104 can be connected to the first pull end 112 of the first locking lever 110. Furthermore, vertical bending lever 103 is connected to protrusion 102 and push rod 104. When control lever 101 and protrusion 102 rotate, vertical bending lever 103 also rotates and pushes push rod 104 forward. Additionally, as... Figures 4A to 4C The first return spring 106 is connected to the first rotating shaft 111 and the second rotating shaft 121. The first return spring 106 provides an elastic restoring force to the first locking lever 110 and the second locking lever 120, causing the first locking lever 110 and the second locking lever 120 to rotate and return to their initial positions.

[0043] Specifically, a support plate 107 supporting the vertical bending rod 103 can be formed at a side position behind the control rod 101. The support plate 107 may include a groove 108, which defines the rotation angle and distance of the vertical bending rod 103. Therefore, as... Figure 4A As shown, when the control lever 101 is not operated, the first locking recess of the second locking lever 120 is arranged in an upwardly inclined position, so that the first impact member 11 cannot be smoothly inserted into the first locking recess 123.

[0044] Conversely, when the control lever 101 is pushed upward by the user, such as Figure 4B As shown, the protrusion 102 and the vertically bent rod 103 rotate downwards, while the vertically bent rod 103 pushes the push rod 104 forward. Subsequently, the push rod 104 pulls the first pulling end 112 of the first locking rod 110 in the forward direction, while the first locking rod 110 rotates in the forward direction about the first rotation axis 111. Therefore, the capturing end 122 of the second locking rod 120 unlocks from the locking end 113 of the first locking rod 110.

[0045] Simultaneously, the second locking lever 120 can rotate downwards about the second rotation axis 121 by the elastic restoring force of the first return spring 106. Therefore, the first locking recess of the second locking lever 120 can be arranged in a forward-open position, allowing the first impact member 11 to be inserted therein. Subsequently, as... Figure 4B As shown, the first impact member 11 installed on the front seat back can be more easily inserted into the first locking recess of the second locking lever 120.

[0046] like Figure 4C As shown, after the first impact member 11 is inserted into the first locking recess of the second locking lever 120, when the user releases the control lever 101, the first locking recess of the second locking lever 120 is arranged in an upwardly inclined position. Therefore, the first impact member 11 can be in a locked position where the first impact member 11 is not separated from the first locking recess.

[0047] In the attached diagram, Figure 5 This is a schematic diagram illustrating a second latching unit 200 in a device for providing a fatigue-relieving position according to the present invention, the second latching unit 200 being arranged in the rear seat back 30. Figure 6 and Figure 7 This is a schematic diagram illustrating a sliding locking unit in a device for providing a fatigue relief position according to the present invention, the sliding locking unit having a second impact member 62, the sliding locking unit being mounted on an encapsulation panel 50 behind the rear seat. Figures 8A to 8C This is a side view showing the fastening process of the second latching unit 200 and the second impact member 62 in the components of the device for providing fatigue relief position according to the present invention.

[0048] like Figure 5 and Figure 6 As shown, the second latching unit 200 can be installed on the top end of the rear surface portion of the rear seat backrest 30, and can fasten the top end of the rear surface of the rear seat backrest 30 to the encapsulation panel 50 arranged behind the rear seat. The second latching unit 200 may include a second support bracket 210, a second return spring 220, a third locking lever 230, a fourth locking lever 240, etc.

[0049] Specifically, the second support bracket 210 can be installed at the inner end of the rear surface of the rear seat back 30. The third locking lever 230 is configured such that a cable connection end 232 connected to the pull cable 231 is formed on its upper part, allowing the pull cable 231 to be pulled, and a stop end 233 configured to prevent the fourth locking lever 240 from rotating in the forward direction is formed on its lower part. The lower end of the third locking lever 230 is rotatably mounted to the rear end side of the pair of second support brackets 210 via a third rotating shaft 234.

[0050] The fourth locking lever 240 is configured such that the first pull end 241 can be integrally formed on its upper part, and the second locking recess 242 can be formed on its lower part, the second locking recess 242 being configured to receive the second impact member 62 inserted therein. The fourth locking lever 240 can be rotatably mounted on the front end side of a pair of second support brackets 210 via a fourth rotating shaft 243. Specifically, the second return spring 220 can be connected to the middle part of the third locking lever 230 and the first pull end 241 of the fourth locking lever 240.

[0051] Therefore, as Figure 8A As shown, the second locking recess 242 of the fourth locking lever 240 is normally arranged in the downward open position, i.e., the position where the second impact member 62 cannot be inserted. Conversely, when the user-operable lever (not shown) connected to the pull cable 231 is pulled, the pull cable 231 pulls the cable connection end 232 of the third locking lever 230, so that the third locking lever 230 can rotate in the forward direction about the third rotation axis 234.

[0052] Simultaneously, since the third locking lever 230 is connected to the first pulling end 241 of the fourth locking lever 240 via the second return spring 220, when the third locking lever 230 rotates, the second return spring 220 can be pulled forward, thereby pulling the first pulling end 241 of the fourth locking lever 240 forward. Subsequently, as Figure 8B As shown, since the fourth locking lever 240 rotates in the forward direction, the second locking recess 242 is arranged in the rearward open position, so the second impact member 62 can be inserted therein.

[0053] like Figure 8CAs shown, when the user releases the lever (not shown) connected to the pull cable 231, the fourth locking lever 240 can be rotated back to its original position by the elastic restoring force of the second return spring 220, so that the second locking recess 242 is arranged in the downward-open position. Therefore, the second impact member 62 can be locked in the second locking recess 242.

[0054] refer to Figure 6 and Figure 7 The encapsulation panel 50 can be installed behind the rear seat to separate the rear seat from the trunk. The sliding locking unit 60 can be installed on the encapsulation panel 50 in a height-adjustable manner. Specifically, the second impact member 62, configured to be lockably inserted into the second locking recess 242 of the fourth locking lever 240, can be formed at the front end of the sliding locking unit 60.

[0055] As a component of the sliding locking unit 60, a vertically arranged track tube 61 can be mounted on the rear surface portion of the encapsulation panel 50. Furthermore, a slider 63 with a hollow tube shape can be fitted around the outer surface of the track tube 61 to allow vertical movement of the hollow tube. Specifically, a second impact member 62 can be mounted on a positioning plate 69 mounted on the slider 63 and can protrude forward while being arranged laterally along the positioning plate 69.

[0056] like Figure 11 and Figure 12 As shown, the elastic clamp 64 can be arranged between the outer surface of the track tube 61 and the inner surface of the slider 63. The elastic clamp 64 can have a circular tubular structure with one side open. Specifically, a friction plate 67 can be attached to the inner surface of the elastic clamp 64. The friction plate 67 is configured to either frictionally contact or separate from the outer surface of the track tube 61.

[0057] Additionally, a pull plate 65 extending towards the outer diameter portion of the slider 63 can be integrally formed at one end of the elastic clamp 64. Specifically, an open area is formed at a specific location on the outer diameter portion of the slider 63. Plate-shaped stop members 66 are formed on both sides of the open area. The pull plate 65 can be arranged between the stop members 66, allowing the pull plate 65 to be pulled.

[0058] Furthermore, the first end of the control cable 68 can be connected to the pull plate 65, and the second end of the control cable 68 can extend through the stop 66 and be connected to the user-operable lever (not shown). Therefore, the position of the pull plate 65 before and after the control cable 68 is pulled can be defined by the stop 66. Thus, when operated by pulling the control cable 68, the elastic clamp 64 expands in the outer diameter direction while being pulled, thereby separating the friction plate 67 of the elastic clamp 64 from the outer surface of the track tube 61, as... Figure 11As shown. In other words, the friction plate 67 moves to the unlocked position, in which the friction plate 67 no longer presses against the track tube 61 nor makes frictional contact with the track tube 61.

[0059] As described above, when the friction plate 67 is in the unlocked position, where it no longer presses against or rubs against the track tube 61, the slider 63 moves to the height-adjustable position, in which it can move vertically along the track tube 61. Conversely, when the pulling operation of the control cable 68 is released, as... Figure 12 As shown, the pull plate 65 can be moved to its original position by the elastic restoring force of the elastic clamp 64. At the same time, the elastic clamp 64 contracts in the inner diameter direction, so the friction plate 67 of the elastic clamp 64 can squeeze the outer surface of the track tube 61 and make frictional contact with the outer surface of the track tube 61. In other words, the elastic clamp 64 can lock onto the track tube 61.

[0060] When the track tube 61 is locked due to pressure and frictional contact with the friction plate 67, the slider 63 remains in a fixed position and does not move up or down along the track tube 61. A typical tilting device 40 may be arranged at the lower part of the rear seat back 30, i.e., at a lower position on the rear seat back 30, which is at the boundary with the rear seat cushion 20. Since the tilting device 40 is implemented using a known mechanism for adjusting the tilt angle of the rear seat back 30, its detailed description will be omitted.

[0061] The following describes the operation of the device according to the invention for providing a fatigue relief position, having the above-described structure. In the device according to the invention for providing a fatigue relief position, the first impact member 11 of the front seat back 10 can be fastened to the first latching unit 100 of the rear seat cushion 20, and the second impact member 62 of the sliding locking unit 60 mounted on the encapsulation panel 50 can be fastened to the second latching unit 200 of the rear seat back 30, so that the rear seat can be positioned and fixed between the front seat back 10 and the encapsulation panel 50.

[0062] First, the rear seat can be detached from the floor panel where the rear seat is already installed. Then, the first impact member 11, mounted at the top of the rear surface of the front seat back 10, can be inserted into the first locking recess of the second locking lever 120 of the first latch unit 100 mounted at the front end of the rear seat cushion 20. In this respect, when the user manipulates and pushes the control lever 101 upward, as... Figure 4B As shown, the protrusion 102 and the vertical bending rod 103 rotate downwards, while the vertical bending rod 103 pushes the push rod 104 forward.

[0063] Subsequently, push rod 104 pulls the first pulling end 112 of the first locking rod 110 forward, while the first locking rod 110 rotates forward about the first rotation axis 111. Therefore, the capturing end 122 of the second locking rod 120 can unlock from the locking end 113 of the first locking rod 110. Simultaneously, the second locking rod 120 rotates downward about the second rotation axis 121 by the elastic restoring force of the first return spring 106. Therefore, the first locking recess of the second locking rod 120 can be arranged in a forward-open position, allowing the first impact member 11 to be inserted therein.

[0064] Then, as Figure 4B As shown, the first impact member 11, installed on the front seat back, can be more easily inserted into the first locking recess of the second locking lever 120. Figure 4C As shown, after the first impact member 11 is inserted into the first locking recess of the second locking lever 120, when the user releases the control lever 101, the first locking recess of the second locking lever 120 can be arranged in an upwardly tilted position. Therefore, the first impact member 11 can be in a locked position where the first impact member 11 is not separated from the first locking recess.

[0065] Therefore, as Figure 9 As shown, the front end of the rear seat cushion 20 can be connected to the top end of the rear surface of the front seat back 10. Then, the second impact member 62 can be inserted into the second locking recess 242 of the second latch unit 200 mounted on the top end of the rear surface of the rear seat back 30. In this respect, when the user pulls the lever (not shown) connected to the pull cable 231, the pull cable 231 pulls the cable connection end 232 of the third locking lever 230, thus allowing the third locking lever 230 to rotate forward about the third rotation axis 234.

[0066] Simultaneously, since the third locking lever 230 is connected to the first pulling end 241 of the fourth locking lever 240 via the second return spring 220, when the third locking lever 230 rotates, the second return spring 220 is pulled forward to pull the first pulling end 241 of the fourth locking lever 240 forward. Subsequently, as... Figure 8B As shown, since the fourth locking lever 240 rotates in the forward direction, the second locking recess 242 can be arranged in a rearward open position so that the second impact member 62 can be inserted therein.

[0067] Subsequently, when the user releases the lever (not shown) connected to the pull cable 231 after inserting the second impact member 62 into the second locking recess 242 of the second latch unit 200, the fourth locking lever 240 can be rotated back to its initial position by the elastic restoring force of the second return spring 220, thereby allowing the second locking recess 242 to be positioned in the downward-open position. Therefore, the second impact member 62 can be locked in the second locking recess 242.

[0068] like Figure 9 As shown, the top of the rear seat backrest 30 can be connected to the top of the encapsulation panel 50. Furthermore, as... Figure 11 As shown, when the friction plate 67 of the elastic clamp 64 is in frictional contact with the track tube 61 while being compressed (e.g., in a compressed state), the slider 63 remains fixed and does not move up or down along the track tube 61. Figure 9 As shown, the second impact member 62, which is mounted on the positioning plate 69 extending from the slider 63, remains in position without moving.

[0069] As described above, since the front end of the rear seat cushion 20 is connected to the top of the rear surface of the front seat back 10, and the top of the rear seat back 30 is connected to the top of the encapsulation panel 50, the rear seat cushion 20 and the rear seat back 30 are arranged in a fatigue-relieving position similar to a hammock, allowing the occupant to lie comfortably on them.

[0070] By adjusting the fore-and-aft movement of the front seats, the tilt angle of the rear seat cushions, the tilt angle of the rear seat backs, and by moving the sliding locking unit up or down (e.g., vertically), the fatigue relief position can be changed according to the user's intention. For example, when Figure 9 When the fatigue relief position shown changes to the fatigue relief position, that is, when the front seat moves forward in response to the operation of the tilting device 40 and the rear seat back 30 tilts further, as Figure 10 As shown, adjust the height of the sliding locking unit 60.

[0071] In this respect, when the user pulls the control cable 68 by manipulating the joystick, the pull plate 65 connected to the control cable 68 is pulled, and at the same time, the elastic clamp 64 unfolds and expands in the outer diameter direction, and the friction plate 67 of the elastic clamp 64 separates from the outer surface of the track tube 61 (i.e., unlocks), as... Figure 11 As shown. Therefore, when the friction plate 67 stops pressing against the track tube 61 or stops frictional contact with the track tube 61 (i.e., the lock can be removed), the slider 63 can move vertically along the track tube 61. In other words, the slider 63 is in a height-adjustable position.

[0072] Therefore, due to the slider 63 from Figure 9 Move down to the position shown. Figure 10 After the indicated position, the slider 63 is locked as described above, thus making it easier to change the fatigue relief position, in which the front seat moves forward and the rear seat back 30 tilts further back by manipulating the tilting device 40.

[0073] As described above, the second or third row seats in the vehicle cabin can be detached from their initial installation position and fixedly positioned between the front seats and the encapsulation panel, like a hammock. The tilt angle of the seat cushions and the tilt angle of the seat backs of the detached rear seats can be adjusted by moving the sliding locking unit up and down. Various fatigue-relieving positions can be provided according to the occupants' preferences.

Claims

1. A device for providing a fatigue-relieving position for a vehicle seat, comprising: The first impact component is installed on the back of the front seat; A first latching unit is mounted on the rear seat cushion and lockably secures the first impact member to the first latching unit. The second latching unit is installed on the rear surface portion of the rear seat back; A sliding locking unit is mounted in a height-adjustable manner on a panel located behind the rear seat; as well as The second impact member is disposed at the front end of the sliding locking unit, thereby being locked to the second latching unit in a lockable manner. The rear seat can be detached and thus fixed between the front seat and the encapsulation panel like a hammock.

2. The device for providing a fatigue-relieving position for a vehicle seat according to claim 1, wherein, The first latching unit is mounted on the front end of the rear seat cushion and secures the first impact member in a lockable manner.

3. The device for providing a fatigue-relieving position for a vehicle seat according to claim 1, wherein, The first latching unit is mounted at a lower position at the front end of the rear seat cushion and secures the first impact member in a lockable manner.

4. The device for providing a fatigue-relieving position for a vehicle seat according to claim 1, wherein, The second latch unit is mounted on the top side of the rear surface portion of the rear seat back.

5. The device for providing a fatigue-relieving position for a vehicle seat according to claim 1, wherein, The first impact member is installed at the top of the front seat back, in a position that can be exposed by removing the headrest, or at the upper rear side of the front seat back.

6. The device for providing a fatigue-relieving position for a vehicle seat according to claim 1, wherein, The first impact member of the front seat backrest is fastened to the first latching unit of the rear seat cushion, and the second impact member of the sliding locking unit mounted on the encapsulation panel is fastened to the second latching unit of the rear seat backrest, so as to arrange and fix the rear seat between the front seat backrest and the encapsulation panel.

7. The device for providing a fatigue-relieving position for a vehicle seat according to claim 1, wherein, The first impact member has the shape of a quadrilateral ring and is integrally formed with a pivot bracket, which is hinged or fastened to a fixed bracket to be pivotable in the vertical direction, and the fixed bracket is fixedly mounted on the top of the rear surface portion of the front seat back.

8. The device for providing a fatigue-relieving position for a vehicle seat according to claim 1, wherein, The first latching unit includes: A control lever, mounted at the front of the rear seat cushion, pivots when operated by being pulled. A protrusion that extends from the inner surface of the control lever to pivot together with the control lever as it pivots; A pair of first support brackets, which are installed inside the front end of the rear seat cushion; A first locking lever, comprising a first pull end integrally disposed at its upper part and a locking end integrally disposed at its rear part, the first locking lever being axially arranged on the pair of first support brackets via a first rotation axis; A push rod, which is connected to the first pull end of the first locking lever; The second locking lever includes a capture end integrally disposed on its upper part and a first locking recess disposed on its lower part, the capture end being constrained by the locking end of the first locking lever, the first locking recess being configured to receive a first impact member inserted therein, wherein the second locking lever is axially arranged on the pair of first support brackets via a second rotation axis; A vertical bending rod, connected to the protrusion and the push rod, wherein, when the control rod and the protrusion rotate, the vertical bending rod rotates and pushes the push rod forward; and The first return spring is connected to the first rotating shaft and the second rotating shaft.

9. The device for providing a fatigue-relieving position for a vehicle seat according to claim 8, wherein, A support plate supporting the vertical bending rod is disposed on the rear side of the control rod. The support plate has a groove, and the rotation angle and distance of the vertical bending rod are limited by the groove.

10. The device for providing a fatigue-relieving position for a vehicle seat according to claim 1, wherein, The second latching unit includes: A pair of second support brackets, the pair of second support brackets being mounted on the top of the rear surface of the rear seat back; The third locking lever includes a cable connection end disposed at its upper part and a stop end disposed at its lower part, the cable connection end being connected to a pull cable and configured to be pulled, wherein the third locking lever is axially mounted to the pair of second support brackets via a third rotating shaft; A fourth locking lever, comprising a second pull end integrally disposed on its upper portion and a second locking recess disposed on its lower portion, the second locking recess accommodating a second impact member inserted therein, wherein the fourth locking lever is axially mounted to the pair of second support brackets via a fourth rotation axis; and A second return spring is connected to the second pull end of the third and fourth locking levers.

11. The device for providing a fatigue-relieving position for a vehicle seat according to claim 1, wherein, The sliding locking unit includes: The track tube is mounted on the encapsulation panel and arranged in the vertical direction; A sliding element, which is assembled around the outer surface of the track tube to enable vertical movement; An elastic clamp having a circular tubular structure open on one side, the elastic clamp being located between the outer surface of the track tube and the inner surface of the slider; A pull plate is integrally set at one end of the elastic clamp and extends toward the outer diameter portion of the slider; A stop, integrally disposed on the outer surface of the slider, defines the position of the pull plate before and after it is pulled; and A control cable is connected to the pull plate and configured to be pulled.

12. The device for providing a fatigue-relieving position for a vehicle seat according to claim 11, wherein, Friction pads are disposed on the inner surface of the elastic clamp to contact or separate from the track tube.

13. The device for providing a fatigue-relieving position for a vehicle seat according to claim 11, wherein, When the control cable is manipulated by being pulled, the elastic clamp expands in the outer diameter direction while being pulled to release the elastic clamp so that the elastic clamp neither squeezes the track tube nor comes into frictional contact with the track tube.

14. The device for providing a fatigue-relieving position for a vehicle seat according to claim 11, wherein, When the operation of pulling the control cable is stopped, the pull plate moves to the initial position, and at the same time, the elastic clamp contracts in the inner diameter direction by the elastic restoring force, wherein the locking operation of pressing the elastic clamp against the track tube and making frictional contact is performed.

15. The device for providing a fatigue-relieving position for a vehicle seat according to claim 11, wherein, The sliding member is equipped with a forward-protruding positioning plate, and the second impact member is disposed at the front end of the positioning plate.

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