KR20230124795A - Relaxation seat frame system for vehicle - Google Patents

Abstract

A relaxation seat frame system for a vehicle is disclosed. According to the present invention, the seat cushion disposed inside the vehicle; a seatback rotatably supported at the rear end of the seat cushion via a reclining shaft; and an auxiliary seat cushion disposed in the front region of the seat cushion, wherein the auxiliary seat cushion is formed to be able to ascend and descend with respect to the seat cushion, and is formed between the seat cushion and the user's thigh according to the transition to a relaxation state. A relaxation seat frame system for a vehicle formed to be lifted from a seat cushion toward a gap that is formed is provided. The present foot may further include a legrest that provides support for the calf region by being rotated upward after providing support for the thigh region through the auxiliary seat cushion. According to the present invention, the user's body weight is evenly supported in a wide area, the transition to a relaxation state is performed, and the body pressure is evenly distributed, thereby minimizing the load applied to the user's body.

Description

Relaxation seat frame system for vehicles {RELAXATION SEAT FRAME SYSTEM FOR VEHICLE}

The present invention relates to a vehicle seat.

A seat on which a user can sit is provided inside the vehicle. In general, a vehicle seat is composed of a seat back supporting a user's back and a seat cushion supporting a hip or thigh.

A vehicle seat may be provided with various additional functions for user convenience. Typically, most vehicle seats are provided with a recliner to adjust the angle of the seat back. Recliners have been continuously improved to improve design or operation. For example, Patent Registration No. 10-1385432 discloses a "recliner mounting structure for automobile seats" capable of reducing the width of a side frame and improving the rigidity of a back frame, and Patent Registration No. 10-2242928 discloses a recliner's Disclosed is a “vehicle seat recliner device” capable of minimizing movement by reducing the assembly tolerance of Faultus, which has a locking function.

In recent years, a vehicle has been developed as a concept such as a mobile living space beyond a simple means of transportation. Advances in autonomous driving are expected to further accelerate this trend. As a result, interest in the interior space of a vehicle is increasing, and in particular, the importance of a seat where a user spends the longest time is rapidly emerging. Against this background, sheets capable of inducing a position similar to a neutral body posture (NBP) in weightlessness have recently emerged. In the industry, it is called by various names such as low gravity seat, zero gravity seat, relaxation seat, and comfort seat. For example, Patent Publication No. 10-2021-0122971 discloses a "relaxation comfort seat for automobiles" capable of taking a relaxation comfort posture such as a weightless posture, and Patent Registration No. 10-2108803 discloses a limited knee space inside a vehicle. In spite of this, a “vehicle seat and a sitting posture control method using the vehicle seat” enabling the realization of a neutral posture are disclosed.

However, the above relaxation seats still have many challenges, and continuous improvement is being made even now.

Registered Patent No. 10-1385432 (registered on April 8, 2014) Registered Patent No. 10-2242928 (registered on April 15, 2021) Patent Publication No. 10-2021-0122971 (published on October 13, 2021) Registered Patent No. 10-2108803 (registered on May 4, 2020)

Embodiments of the present invention are intended to provide a relaxation seat frame system for a vehicle in which a user can maintain a more comfortable posture and improve a feeling of operation.

However, the technical problems to be achieved by the embodiments of the present invention are not necessarily limited to the above-mentioned technical problems. Other technical problems not mentioned will be clearly understood by those skilled in the art to which the embodiments of the present invention belong from other descriptions of the specification, such as the detailed description.

According to one aspect of the present invention, a seat cushion disposed inside the vehicle; a seatback rotatably supported at the rear end of the seat cushion via a reclining shaft; and an auxiliary seat cushion disposed in a front end region of the seat cushion, wherein the auxiliary seat cushion is formed to be able to move up and down with respect to the seat cushion, and the seat cushion and the user's contact with each other according to the transition to a relaxation state. A relaxation seat frame system for a vehicle configured to be elevated from the seat cushion toward a gap formed between the thighs may be provided.

According to another aspect of the present invention, the transition from the initial state to the relaxation state is input; Rotating the seatback around the reclining axis; Elevating the auxiliary seat cushion disposed in the front end area of the seat cushion together with the rotation of the seat back, providing a supporting force to the user's thigh in response to the movement of the support point according to the rotation of the seat back; When the auxiliary seat cushion is raised, the leg rest is rotated upward around the leg rest rotation axis to provide support for the user's calf region; and converting the seat cushion into a relaxation state by rotating the seat cushion so that the front end portion thereof is elevated while the user's hip portion is stably fixed to the reclining axis portion between the seat back and the auxiliary seat cushion portion. A method of switching the relaxation seat frame system to a relaxation state may be provided.

In the relaxation seat frame system for a vehicle according to embodiments of the present invention, conversion to a relaxation state and support in a relaxation state can be performed in a state in which the user's body weight is evenly supported over a large area.

In addition, the vehicle relaxation seat frame system according to the embodiments of the present invention can evenly distribute body pressure to minimize the load applied to the user's body and improve the feeling of use.

However, technical effects obtainable through the embodiments of the present invention are not necessarily limited to the above-mentioned effects. Other technical effects not mentioned will be clearly understood by those skilled in the art from other descriptions of the specification, such as the detailed description.

1 is a schematic perspective view showing a relaxation seat frame system for a vehicle according to an embodiment of the present invention.
FIG. 2 is a schematic side view of the relaxation seat frame system for a vehicle shown in FIG. 1 .
FIG. 3 is a first operation view of the relaxation seat frame system for a vehicle shown in FIG. 1 .
FIG. 4 is a second operation diagram of the vehicle relaxation seat frame system shown in FIG. 1 .
5 is a third operation diagram of the vehicle relaxation seat frame system shown in FIG. 1 .
FIG. 6 is a fourth operation view of the vehicle relaxation seat frame system shown in FIG. 1 .
FIG. 7 is an exemplary view comparing operations of the relaxation seat frame system for a vehicle shown in FIG. 1 and the conventional relaxation seat frame system for a vehicle.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following examples may be provided to more completely explain the present invention to those skilled in the art. However, the following embodiments are provided to aid understanding of the present invention, and the technical spirit of the present invention is not necessarily limited to the following embodiments. In addition, detailed descriptions of well-known configurations or obscure the technical gist of the present invention will be omitted.

1 is a schematic perspective view showing a relaxation seat frame system for a vehicle according to an embodiment of the present invention. FIG. 2 is a schematic side view of the relaxation seat frame system for a vehicle shown in FIG. 1 .

For convenience of description, some components are omitted in FIGS. 1 and 2 . In addition, for a clearer representation of some components, FIGS. 1 and 2 each show a relaxation seat frame system for a vehicle in different operating states (postures).

1 and 2, the vehicle relaxation seat frame system (hereinafter referred to as "seat 100") of the present embodiment includes a seatback 110 for supporting the user's back, and a user's buttocks. It may include a seat cushion 120 for doing, and a legrest 130 for supporting the user's leg.

The seatback 110 may form a predetermined support surface capable of supporting the user's back. The support surface may have a predetermined curved shape by reflecting ergonomic design and the like. However, in this embodiment, the outer shape of the seat back 110 or the shape of the support surface is not particularly limited.

The seatback 110 may include a frame structure for forming a skeleton or support structure of the seatback 110, and a cover or cushion member covered with the frame structure. For reference, in this embodiment, for convenience of explanation, the seatback 110 is shown centering on the frame structure from which the cover or cushion member is removed.

A seat cushion 120 may be disposed at the lower end of the seat back 110 . The seat cushion 120 may form a predetermined support surface capable of supporting the user's buttocks. Similar to the case of the seatback 110, the support surface may have a predetermined curved shape by reflecting ergonomic design. However, in this embodiment, the shape of the outer shape or support surface of the seat cushion 120 is not particularly limited.

Similar to the case of the seat back 110, the seat cushion 120 may include a frame structure for forming a skeleton or support structure of the seat cushion 120, and a cover or cushion member covered with the frame structure. In this embodiment, for convenience of explanation, the seat cushion 120 is shown centering on the frame structure from which the cover or cushion member is removed.

The rear end of the seat cushion 120 may be fastened to the lower end of the seat back 110 via the reclining shaft S1. Alternatively, the lower end of the seat back 110 may be fastened to the rear end of the seat cushion 120 via the reclining shaft S1. The reclining shaft S1 may form a central axis of rotation in a left-right direction. The reclining axis S1 is formed between the seat cushion 120 and the seat back 110 so that the seat back 110 can rotate with respect to the seat cushion 120 or the seat cushion 120 can rotate with respect to the seat back 110. can be linked.

The seat cushion 120 may be supported on the base 140 via the first seat cushion rotation axis S2 and the second seat cushion rotation axis S3. The base 140 may include a predetermined support structure installed in the vehicle to support the seat 100 . The seat cushion 120 is a predetermined first coupling means installed between the base 140 and the first seat cushion pivot S2, and installed between the base 140 and the second seat cushion pivot S3. It may be supported on the upper part of the base 140 by a predetermined second coupling means.

The first coupling means may be rotatably fastened to the first seat cushion rotation axis S2 and the base 140, and the second coupling means is respectively connected to the second seat cushion rotation axis S3 and the base 140. It can be rotatably fastened. Accordingly, the seat cushion 120 is rotated with respect to the base 140 in the left and right directions, so that the arrangement posture can be appropriately adjusted. The rotation around the left and right directions may be performed simultaneously or sequentially around one or a plurality of rotation axes.

A leg rest 130 may be disposed at the front end of the seat cushion 120 . The legrest 130 may form a predetermined support surface capable of supporting a user's leg (calf) portion. In the present embodiment, the leg rest 130 is illustrated in a substantially flat plate shape, but is not necessarily limited thereto. Similar to the case of the seatback 110, the support surface of the leg rest 130 may have a predetermined curved shape by reflecting ergonomic design in some cases.

The leg rest 130 may be fastened to the front end of the auxiliary seat cushion 150 via the rear end of the leg rest pivot shaft S5. The auxiliary seat cushion 150 will be described later. The leg rest rotation axis S5 may form a rotation axis in a left and right direction. The leg rest pivoting shaft S5 may be linked between the auxiliary seat cushion 150 and the leg rest 130 so that the leg rest 130 is rotatable with respect to the auxiliary seat cushion 150 .

The leg rest 130 may be linked to the auxiliary seat cushion 150 through a predetermined link structure. For example, the legrest 130 may be linked to the auxiliary seat cushion 150 through a link assembly including a plurality of link arms. In some cases, the leg rest 130 may be formed to be elastic in length in the front and rear directions. In this case, the length of the legrest 130 may be extended to increase the support area for the leg or reduced in length to reduce the placement space.

In some cases, the leg rest 130 may be selectively employed as "extended leg rest" of Application No. 10-2021-0177240 previously filed by the present applicant.

Meanwhile, the seat 100 of this embodiment may further include an auxiliary seat cushion 150.

The auxiliary seat cushion 150 may be disposed at the front end of the seat cushion 120 . The auxiliary seat cushion 150 may extend from the front end of the seat cushion 120 to have a partial overlapping area with the seat cushion 120 . In addition, the auxiliary seat cushion 150 may be disposed on the upper side of the seat cushion 120 and supported by the seat cushion 120 .

The auxiliary seat cushion 150 may have a predetermined support surface 151 capable of supporting the user's thigh. For example, the support surface 151 of the auxiliary seat cushion 150 may have a length in the front-back direction of about 30 to 40% of the length in the front-back direction of the entire support surface including the seat cushion 120 and the auxiliary seat cushion 150. there is. The left-right width of the support surface 151 of the auxiliary seat cushion 150 may be formed to substantially correspond to the left-right width of the seat cushion 120 .

The auxiliary seat cushion 150 may be formed to be able to move up and down independently of the seat cushion 120 . Alternatively, the auxiliary seat cushion 150 may be formed to be pop-up from the seat cushion 120 . As the auxiliary seat cushion 150 goes up and down or pops up, the support surface 151 of the auxiliary seat cushion 150 comes into close contact with the user's thigh to provide a support structure. This will be further explained in relation to the operation of this embodiment.

The auxiliary seat cushion 150 may be fastened to the seat cushion 120 in various ways or coupling structures, as long as it is capable of being raised and lowered or popped up with respect to the seat cushion 120 .

For example, the auxiliary seat cushion 150 may have a hinge coupling structure and be fastened to the seat cushion 120, as illustrated in this embodiment. Specifically, the rear end of the auxiliary seat cushion 150 may be rotatably fastened to the seat cushion 120 via the auxiliary seat cushion rotation shaft S4. The auxiliary seat cushion rotation axis S4 may form a rotation axis in the left and right directions. The auxiliary seat cushion 150 is rotated upward around the auxiliary seat cushion rotation axis S4 to be elevated or protruded from the seat cushion 120, or is rotated downward to the support surface corresponding to the seat cushion 120. can form

The auxiliary seat cushion rotation axis S4 may be disposed at the rear end of the auxiliary seat cushion 150, and the support surface 151 may be formed in the front area of the auxiliary seat cushion 150. That is, the support surface 151 may be spaced apart at a predetermined interval from the front and rear of the auxiliary seat cushion rotation axis S4. The above interval can improve the operating feeling during the rotation (elevation and descent) operation of the support surface 151 around the auxiliary seat cushion rotation axis S4.

If necessary, the seat 100 of this embodiment may further include a shoulder air cell 160 and a side bolster 170.

The shoulder air cell 160 may be disposed on top of the seat bag 110. The shoulder air cell 160 may be expanded by receiving air through an air supply line, or may be formed to contract by discharging air. As a result, the shoulder air cell 160 can adjust the supporting force of the user's shoulder.

A pair of side bolsters 170 may be disposed left and right at the middle of the seatback 110. The side bolster 170 may protrude into the user's armpit to provide support. The side bolster 170 may be formed to be capable of adjusting the amount of protrusion so as to appropriately vary the supporting force for the armpit area.

3 to 6 are first to fourth operation views of the relaxation seat frame system for a vehicle shown in FIG. 1 .

3 shows a state in which the seat 100 of this embodiment is disposed in an initial state, and FIG. 6 shows a state in which the seat 100 according to this embodiment is switched to a state of relaxation.

In one working example, the seat 100 of this embodiment may be switched from an initial state to a relaxation state by sequentially going through each operating state of FIGS. 3 to 6 . This allows the user to maintain a stable posture and switch from the initial state to the relaxation state. However, the sheet 100 of this embodiment does not necessarily have to sequentially go through each operating state of FIGS. 3 to 6 . In some cases, the seat 100 may be switched from the operating state of FIG. 3 to the operating state of FIG. 6 by changing the order of operation.

3 shows a state in which the sheet 100 is disposed in an initial state. 3 may generally correspond to a daily use state. In the state of FIG. 3 , the seat back 110 may form an angle of about 90 to 100 degrees with the seat cushion 120 , and the seat cushion 120 may be disposed substantially parallel to the base 140 . The auxiliary seat cushion 150 may be disposed in a lowered state so as to be in close contact with the seat cushion 120, and the legrest 130 may be disposed in a folded state toward the seat cushion 120.

When the user activates the relaxation mode in the state of FIG. 3 , the sheet 100 may be converted to the arrangement state shown in FIG. 6 through steps after FIG. 4 . The relaxation state of FIG. 6 induces the user's posture in a more comfortable posture for rest and the like.

For reference, the relaxation mode means a state in which a neutral body posture (NBP) is induced so that the user can sit on the seat 100 in the most comfortable posture. Seats implemented with a relaxation mode are referred to by various names in the industry, such as low-gravity seats, zero-gravity seats, relaxation seats, and comfort seats.

Meanwhile, referring to FIG. 4 , in an initial stage of transition to the relaxation mode, the seatback 110 may rotate backward. The seatback 110 may be rotated at a predetermined angle rearward about the reclining axis S1. In order to induce a desirable neutral body posture, the seatback 110 may be rotated 20 to 40 degrees backward from the initial state of FIG. 3 . Alternatively, the seatback 110 may be formed to be rotated 20 to 40 degrees backward from the initial state of FIG. 3 .

Meanwhile, the auxiliary seat cushion 150 may be rotated with respect to the seat cushion 120 around the auxiliary seat cushion rotation axis S4. As a result, the auxiliary seat cushion 150 can be raised or popped up to a predetermined degree upward. In order to induce a desirable neutral body posture, the auxiliary seat cushion 150 may be rotated upward by 7 to 10 degrees from the initial state of FIG. 3 . Alternatively, the auxiliary seat cushion 150 may be formed to be able to rotate upward by 7 to 10 degrees from the initial state of FIG. 3, or to be lifted or popped up by 70 to 90 mm upward.

Preferably, the elevation or pop-up of the auxiliary seat cushion 150 may occur together with the rearward rotation of the seatback 110. That is, as the seatback 110 gradually rotates backward, the auxiliary seat cushion 150 may gradually rotate upward.

The above allows the user's buttock to remain stably positioned at the rear of the seat cushion 120 and the seatback 110 to rotate backward. That is, the seatback 110 may be rotated backward in a state in which the auxiliary seat cushion 150 is lifted or popped up to support the user's thigh. Accordingly, a phenomenon in which the user slips forward due to a change in the center of gravity during the backward rotation of the seatback 110 can be reduced. That is, the user can feel the feeling of naturally lying on his back while the position of the buttocks is maintained without the feeling of sliding forward. This will be amplified with reference to FIG. 7 to be described later.

Referring to Figure 5, then the leg rest 130 can be rotated forward about the leg rest pivot axis (S5). In some cases, some components of the leg rest 130 may be extended forward and backward along with the length of the leg rest 130 . Preferably, in order to induce a neutral body posture, the legrest 130 may be rotated 70 to 90 degrees forward from the initial state of FIG. 3 . Alternatively, the legrest 130 may be formed to be rotatable forward by 70 to 90 degrees from the initial state of FIG. 3 .

In the arrangement of FIG. 5 , the leg rest 130 may have an inclination angle of 10 to 15 degrees with respect to the horizontal direction. The legrest 130 may be disposed in a substantially horizontal direction according to the rotation of the seat cushion 120 to be described later.

As described above, the legrest 130 may be supported by the auxiliary seat cushion 150. Accordingly, the leg rest 130 may be drawn out (rotated) from the auxiliary seat cushion 150 . In addition, the drawn-out leg rest 130 may be disposed at a predetermined angle with the auxiliary seat cushion 150 around the leg rest pivot axis S5 as shown in FIG. 5 .

When the leg rest 130 is withdrawn from the auxiliary seat cushion 150, the leg rest 130 is raised to support the user's calf in a state where the user's thigh is properly supported. Accordingly, during the operation of the legrest 130, the load applied to the legrest 130 (load of the calf region) can be properly distributed. This makes it possible to reduce the sense of heterogeneity when switching modes.

Referring to FIG. 6 , the seat cushion 120 may then rotate backward. The seat cushion 120 may be rotated via the first and second seat cushion rotation shafts S2 and S3 so that the front end is raised at a predetermined angle. In order to induce a desirable neutral body posture, the seat cushion 120 may be rotated approximately 10 to 15 degrees around the second seat cushion rotation axis S3 in the initial state of FIG. 3 .

According to the rotation of the seat cushion 120 as described above, the seat back 110, the auxiliary seat cushion 150, and the legrest 130 supported by the seat cushion 120 may be rotated at a predetermined angle together with the seat cushion 120. there is. Preferably, in the relaxation state as shown in FIG. 6, the angle between the seat cushion 120 and the seat back 110 may be formed at 120 to 130 degrees, and the angle between the seat back 110 and the base 140 is 40 to 50 degrees. can be formed

The seat cushion 120 may rotate backward as described above in a state in which the seat back 110, the legrest 130, and the auxiliary seat cushion 150 are disposed in an appropriate intermediate position. In the state shown in FIG. 5, the user's body can be evenly supported over the entire area of the seat 100, and in this supported state in the relaxation state shown in FIG. 6. Accordingly, the user can feel a comfortable feeling of use even in the transition process to the relaxation state.

In some cases, the operation of the shoulder air cell 160 and/or the side bolster 170 may be added in the relaxation state of FIG. 6 .

The seat 100 of this embodiment can be converted from the initial state of FIG. 3 to the relaxation state of FIG. 6 through the above operation steps. On the other hand, in the opposite case, it can be returned to the initial state through the above reverse order.

Although description is omitted, the seat 100 may include a driving means for rotating the seat cushion 120, the seat back 110, the legrest 130, and the auxiliary seat cushion 150. The driving means may be implemented through various known means such as motors, cylinders, and actuators, and as necessary, links, brackets, and other connectors may be added to transmit driving force to each component. In this embodiment, the type of drive means, power transmission structure, etc. are not particularly limited.

FIG. 7 is an exemplary view comparing operations of the relaxation seat frame system for a vehicle shown in FIG. 1 and the conventional relaxation seat frame system for a vehicle.

7(b) shows a switching operation from a conventionally known vehicle relaxation seat frame system (hereinafter, referred to as “conventional seat 10”) to a relaxation state. In the conventional seat 10, when the user activates the relaxation mode, the seat back 11 rotates backward, and the seat cushion 12 rotates or the leg rest 13 rotates.

However, the conventional sheet 10 as described above has a problem in that the user does not completely adhere to the sheet 10 during the transition to the relaxation state. This becomes a factor that deteriorates the usability during the operation process.

More specifically, when the relaxation mode is activated in the initial state and the seatback 11 rotates backward, the user can slide forward as the support point moves. Or even if not, you will receive a feeling of sliding forward. Accordingly, in most cases, the user corrects the posture once again during or after the operation.

In addition, most of the user's legs are supported only by the leg rest 13, and the transition to the relaxation state is performed. Even after the complete transition to the relaxation state, only the calf portion of the user's leg portion is partially supported by the legrest 13 as shown in the figure in terms of the body structure. In addition, the knee portion is spaced apart from the legrest 13 or the seat cushion 12, and the thigh portion is spaced apart from the seat cushion 12 at a predetermined distance G1. Accordingly, the load of the entire leg area is concentrated on the calf area supported by the leg rest 13, and there is inconvenience when used for a long time.

Furthermore, in general, in a relaxation state, the seatback 11 is not completely horizontal, but inclined downward in the forward direction. Therefore, the user receives an external force that slides forward due to the weight of the upper body. In addition, most of these external forces are concentrated on the user's buttocks. This is because, as shown in the figure, due to the body structure, a predetermined gap G1 is formed between the thigh and the seat cushion 120, making it difficult to provide adequate support. Therefore, when using for a long time, most of them may feel pain in the hip or lumbar region.

Figure 7 (a) shows the support structure according to the sheet 100 of this embodiment. Referring to this, the seat 100 of the present embodiment can significantly improve the above-described conventional problems through the switching operation method to the relaxation state or the operation of the auxiliary seat cushion 150.

First, in the seat 100 of this embodiment, as the seatback 110 is rotated and the support point is moved rearward, the auxiliary seat cushion 150 protrudes to support the user's thigh. Accordingly, when the seatback 110 is rotated, it is possible to prevent a user from slipping forward or changing a posture.

In addition, in a state in which the auxiliary seat cushion 150 properly supports the user's thigh and distributes the load, the legrest 130 may be deployed or the seat cushion 120 may be rotated. Therefore, it is possible to prevent the load from being concentrated on the calf area, and the entire seat 100 including the seat cushion 120 rotates backward in a state in which the weight is evenly distributed and supported, so that a stable feeling of use can be implemented.

On the other hand, when the complete transition to the relaxation state is made, the user's lumbar spine or back can be supported by being properly adhered to the seat back 110, centered on the hip, and the thigh on the other side is also supported by the auxiliary seat cushion 150. It can be properly adhered and supported. Therefore, the user can be evenly supported in a wide area around the hip between the seat back 110 and the auxiliary seat cushion 150.

As described above, in the vehicle relaxation seat frame system 100 according to embodiments of the present invention, the user's body weight can be switched to a relaxation state and supported in a relaxation state in a state where the user's weight is evenly supported over a large area. there is. Accordingly, the body pressure can be evenly distributed to minimize the load applied to the user's body and improve the feeling of use.

Although the embodiments of the present invention have been described above, those skilled in the art can add, change, delete, or add elements within the scope not departing from the technical spirit of the present invention described in the claims. The present invention can be variously modified or changed by the above, and this will also be said to be included in the scope of the present invention.

100: vehicle relaxation seat frame system 110: seat back
120: seat cushion 130: leg rest
140: base 150: auxiliary seat cushion
160: shoulder air cell 170: side bolster

Claims (9)

a seat cushion 120 disposed inside the vehicle;
a seatback 110 rotatably supported at the rear end of the seat cushion 120 via a reclining shaft S1; and
Including; auxiliary seat cushion 150 disposed in the front area of the seat cushion 120;
The auxiliary seat cushion 150,
It is formed to be able to go up and down with respect to the seat cushion 120, and toward the gap G1 formed between the seat cushion 120 and the user's thigh according to the transition to the relaxation state, the seat cushion 120 A relaxation seat frame system for a vehicle formed to be lifted from. The method of claim 1,
The seat back 110,
When the transition from the initial state to the relaxation state is initiated, it is formed to rotate backward around the reclining axis (S1),
The auxiliary seat cushion 150,
As the seat back 110 rotates, it rises from the seat cushion 120 and comes into close contact with the user's thigh, providing support for the user's thigh in response to the movement of the support point according to the rotation of the seat back 110. A relaxation seat frame system for vehicles formed to The method of claim 2,
The seat cushion 120,
When the seat back 110 is rotated and the auxiliary seat cushion 150 is lifted, and the user's hip is stably fixed in position at the reclining axis (S1), the front end portion is rotated to be raised to the relaxation state A vehicle relaxation seat frame system that is formed to be converted into. The method of claim 1,
A vehicle relaxation seat frame system further comprising a leg rest 130 rotatably supported at the front end of the auxiliary seat cushion 150 via a leg rest rotation shaft S5. The method of claim 4,
The leg rest 130,
When the transition from the initial state to the relaxation state is initiated and the auxiliary seat cushion 150 is raised to provide support for the user's thigh, it is rotated upward around the legrest rotation axis S5, A vehicle relaxation seat frame system formed to provide support for the user's calf area. The method of claim 1,
The auxiliary seat cushion 150,
It is rotatably fastened to the seat cushion 120 via the auxiliary seat cushion rotation axis S4, and is rotated upward around the auxiliary seat cushion rotation axis S4 to rise toward the user's thigh, or A vehicle relaxation seat frame system formed to be lowered from a user's thigh by rotating downward around the auxiliary seat cushion rotation axis (S4). The method of claim 6,
The auxiliary seat cushion 150,
A support surface 151 is disposed in the front area of the auxiliary seat cushion 150 to provide support for the user's thigh, and the auxiliary seat cushion rotation axis S4 extends from the support surface 151 at a predetermined level. A relaxation seat frame system for a vehicle spaced apart from the rear and rotatably supported by the seat cushion (120). The method of claim 1,
The seat cushion 120,
A first seat cushion pivoting axis (S2) rotatably supported by the base 140 via a first coupling means at one side of the seat cushion 120 in the front-back direction, and the first seat cushion pivoting axis (S2) A vehicle relaxation seat system having a second seat cushion pivoting shaft (S3) spaced apart from the rear by a predetermined distance and rotatably supported by the base (140) via a second coupling means. A step of inputting a transition from an initial state to a relaxation state;
The step of rotating the seat back 110 to the center of the reclining axis (S1);
Along with the rotation of the seat back 110, the auxiliary seat cushion 150 disposed in the front area of the seat cushion 120 is raised, and the seat back 110 moves to the user's thigh in response to the movement of the supporting point. providing support for;
When the auxiliary seat cushion 150 is raised, the leg rest 130 is rotated upward around the leg rest pivot axis S5 to provide support for the user's calf region; and
With the user's buttocks stably fixed in position on the reclining axis (S1) between the seat back 110 and the auxiliary seat cushion 150, the seat cushion 120 is rotated so that the front end portion is raised to provide relaxation A method of switching a relaxation seat frame system for a vehicle to a relaxation state, comprising: converting to a relaxation state.

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