Vehicle seat structure

Abstract

To provide a vehicular seat structure capable of surely preventing formation of an impression by a buckle on a vehicular seat.SOLUTION: The vehicular seat structure 101 includes the seat cushion 2 of the vehicular seat 1, the buckle 10 accommodated in the accommodating part 4 that opens on the front surface side of the seat cushion 2, and the interlocking mechanism part 20 that moves the buckle 10 from the use position Q1 exposed on the front surface side of the seat cushion 2 to the retracted position Q2 retracted deeper than the use position P1 in conjunction with the seat leg part operation in which the seat leg part 22 rotatably connected to the seat cushion 2 rotates from the support position P1 to the storage position P2 with respect to the seat cushion 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat structure. [Background technology]

[0002] Patent Document 1 below discloses a buckle retention structure for a vehicle seat belt as a technology related to this type of device. In this buckle retention structure, a buckle is provided at the lower end of a seat back so as to be rotatable about a rotation shaft. When the seat back is in the seating position, the buckle is retained in a protruding position protruding forward by the biasing force of a biasing member, and when the seat back is tilted forward, the buckle is pressed against the seat cushion and stored in a recess in the seat back against the biasing force of the biasing member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-111136 Summary of the Invention [Problem to be solved by the invention]

[0004] The buckle retention structure described above prevents the buckle from being pinched between the seat cushion and the seat back when the seat back is tilted forward, thereby preventing the seat cushion from being left with a dent when the seat back is returned to the seating position. However, due to the inherent structure in which the buckle held in the protruding position is pressed against the seat cushion, the seat cushion receives a force from the buckle in the pressing direction, making it impossible to completely prevent the formation of a dent or other indentation in the seat cushion after the seat back is tilted forward. Even if a structure were adopted to address this problem by weakening the biasing force of the biasing member, this would then prevent the buckle from being held in the protruding position, making it difficult to fulfill the buckle's original purpose. The formation of an indentation by the buckle can be particularly problematic when vehicle seats are designed to be thinner to expand luggage space.

[0005] The present invention has been made in view of the above-mentioned problems, and aims to provide a vehicle seat structure that can reliably prevent the formation of indentations on a vehicle seat caused by a buckle. [Means for solving the problem]

[0006] One aspect of the present invention is a seat component that is a seat cushion or a seat back of a vehicle seat; a buckle accommodated in an accommodating portion that opens on the front surface side of the seat constituent member; a linkage mechanism that moves the buckle in response to a predetermined input operation from a use position exposed on the surface side of the seat constituent member to a retracted position retracted further back than the use position; Equipped with the predetermined input action is either one of a seat leg stowing action in which a seat leg rotatably connected to a seat cushion of the vehicle seat rotates from a support position relative to the seat cushion to a stowed position, and a seat back forward folding action in which the seat back moves from an upright position relative to the seat cushion to a forward folding position; is located. [Effects of the Invention]

[0007] According to the vehicle seat structure of the above aspect, the buckle, housed in a housing that opens on the surface side of the seat component of the vehicle seat, moves from a use position exposed on the surface side of the seat component to a retracted position via an interlocking mechanism that is interlocked with the seat leg retracting operation or the seat back forward tilting operation. The retracted position is further from the surface of the seat component than the use position. Therefore, by actively moving the buckle from the use position to the retracted position using the interlocking mechanism, the buckle can be prevented from protruding from the surface of the vehicle seat, thereby avoiding the application of a pressure load from the buckle to the surface of the vehicle seat that could cause indentations. This is particularly effective when a vehicle seat needs to be made thinner to expand luggage space. Another advantage is that using the seat leg retracting operation or the seat back forward tilting operation to move the buckle eliminates the need for additional functionality.

[0008] According to the above-described aspect, it is possible to provide a vehicle seat structure that can reliably prevent the formation of indentations on the vehicle seat due to the buckle. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a front view of a vehicle seat structure according to a first embodiment, seen from the front of the vehicle. [Figure 2] FIG. 2 is a view of the buckle and its surroundings in the seat cushion in FIG. 1, seen from above the vehicle. [Figure 3] 3 is a cross-sectional view taken along the line III-III in FIG. 2, showing a state in which the buckle is in a normal position. [Figure 4] 4 is a cross-sectional view showing the state after the buckle has moved from the normal position of FIG. 3 to the retracted position. [Figure 5] FIG. 10 is a side view of the vehicle seat structure of the second embodiment, as viewed from the side of the vehicle. [Figure 6] 6 is a partial enlarged view of the buckle and its surroundings when the seat back is in an upright position in the vehicle seat structure of FIG. 5. [Figure 7] 6 is a partial enlarged view of the buckle and its surroundings when the seat back is in a forward-folded position in the vehicle seat structure of FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0010] Preferred embodiments of the above aspects are described below.

[0011] In the vehicle seat structure of the above-described aspect, the interlocking mechanism utilizes the seat leg storage action as the specified input action, and is preferably configured to cause the seat leg storage action to occur in conjunction with the action of flipping the vehicle seat sideways in the forward-tilting state of the seat back.

[0012] According to this vehicle seat structure, the buckle can be moved from the use position to the retracted position in conjunction with the seat leg storage action that occurs in conjunction with the action of flipping the vehicle seat sideways in a forward-tilting state of the seat back.

[0013] In the vehicle seat structure of the above-mentioned aspect, the interlocking mechanism preferably has a belt-shaped member connecting the buckle and the seat leg, and an engagement portion provided on the seat leg so as to be able to interfere with the belt-shaped member, and is configured so that when the seat leg rotates from the support position to the storage position, the engagement portion of the seat leg interferes with the belt-shaped member, thereby moving the buckle from the use position to the retracted position.

[0014] According to this vehicle seat structure, when the seat legs are stored, the buckle can be moved from the use position to the retracted position by utilizing a simple structure in which the engaging portion of the seat leg interferes with the belt-shaped member connecting the buckle and the seat leg.

[0015] In the vehicle seat structure of the above aspect, the interlocking mechanism utilizes the forward tilting motion of the seat back as the predetermined input motion, and preferably includes a cable fixing portion provided on a seat back frame of the seat back, a cable connecting the buckle and the cable fixing portion, and a plurality of hanging members provided on a seat cushion frame of the seat cushion, and is configured so that when the seat back moves from the upright position to the forward tilting position, the cable fixing portion pulls the cable hung on the plurality of hanging members, thereby moving the buckle from the use position to the retracted position.

[0016] According to this vehicle seat structure, when the seat back of the vehicle seat is moved forward from an upright position to a forward-folded position, the cable that is hung on multiple hanging members is pulled by the cable fixing portion, thereby moving the buckle from the use position to the retracted position.

[0017] In the vehicle seat structure of the above aspect, it is preferable to have an elastic portion that constantly elastically biases the buckle from the retracted position toward the use position.

[0018] According to this vehicle seat structure, when the specified input operation is released, the buckle can be returned to the use position by utilizing the elastic portion that constantly elastically biases the buckle from the retracted position toward the use position.

[0019] In the vehicle seat structure of the above aspect, it is preferable that the storage portion is a recess having a side wall portion and a bottom plate portion, and at least one of the side wall portion and the bottom plate portion is the elastic portion made of an elastic material.

[0020] According to this vehicle seat structure, by forming at least one of the side wall portion and the bottom plate portion of the recess that accommodates the buckle from an elastic material, the function of the elastic portion that elastically holds the buckle in the use position can be realized. In other words, the member that functions to accommodate the buckle can also function as the elastic portion. In this case, a dedicated part for the elastic portion is not required, and the structure can be prevented from becoming complicated.

[0021] Hereinafter, a specific example of the vehicle seat structure according to the present embodiment will be described with reference to the drawings.

[0022] In the drawings for explaining the vehicle seat structure, unless otherwise specified, the front of the vehicle is indicated by an arrow FR, the rear of the vehicle is indicated by an arrow RR, the upper side of the vehicle is indicated by an arrow UP, and the right side of the vehicle is indicated by an arrow RH. In addition, the vehicle length direction is indicated by an arrow X, the vehicle width direction is indicated by an arrow Y, and the vehicle height direction is indicated by an arrow Z.

[0023] (Embodiment 1) 1. Structure of vehicle seat 1 As shown in FIG. 1, a vehicle seat 1 according to the first embodiment is a seat provided in the rear of a vehicle. The vehicle seat 1 includes a seat cushion 2, a seat back 3, and a headrest. Both the seat cushion 2 and the seat back 3 are constructed using cushioning materials that are elastically deformable in response to external loads. The vehicle seat 1 is fixed to an interior wall of the vehicle compartment by a support member 5. For ease of explanation, FIG. 1 illustrates a case in which two vehicle seats 1 are arranged side by side in the vehicle width direction Y.

[0024] A seat leg 22 is rotatably connected to the seat cushion 2 of the vehicle seat 1. That is, the seat leg 22 is a plate member whose width direction is the vehicle length direction X, and is configured to be rotatable around a rotation center 22a between a support position Q1 and a storage position Q2 relative to the seat cushion 2. The lower end of the seat leg 22 is configured to be releasably locked to the vehicle floor via a locking mechanism 23. Furthermore, although not specifically shown, the seat leg 22 is provided with a return spring member for returning the seat leg 22 to the support position Q1 by an elastic force.

[0025] When the seat leg 22 is locked by the locking mechanism 23 at the support position Q1, it is arranged to extend linearly in the vehicle height direction Z and functions to support the seat cushion 2 from below. On the other hand, when the locking mechanism 23 is unlocked, the seat leg 22 can be rotated approximately 90° from the support position Q1 to the storage position Q2 around the rotation center 22a. As a result, the seat leg 22 is arranged along the bottom surface of the seat cushion 2. The seat leg 22 is connected to the buckle 10 via a belt-shaped member 21. The belt-shaped member 21 is made of flexible webbing.

[0026] In the vehicle seat 1, the seat back 3 can be moved between an upright position R1, which is a normal use position when an occupant is seated, and a forward-folded position R2. The vehicle seat 1 is a so-called "flip-up" seat that can be rotated approximately 90 degrees around a rotation shaft 6 of the support member 5. Therefore, the vehicle seat 1 can change its position from a normal use state in which an occupant can be seated (the state shown on the right side in FIG. 1 ) to a forward-folded state in which the seat back 3 is set from the upright position R1 to the forward-folded position R2 (the state shown by the two-dot chain line in FIG. 1 ), and then to a flip-up state (the state shown on the left side in FIG. 1 ).

[0027] 2. Structure of vehicle seat structure 101 As shown in FIG. 1, the vehicle seat structure 101 of the first embodiment includes a seat cushion 2, which is a seat component, a buckle 10 housed in a housing 4 that opens on the surface side of the seat cushion 2, and an interlocking mechanism 20.

[0028] The interlocking mechanism 20 functions to rotate the seat legs 22 from a support position Q1 to a storage position Q2 in conjunction with the movement of flipping up the vehicle seat 1 to the side in a forward-tilting state of the seat back 3, i.e., to cause a "seat leg storage movement." In the interlocking mechanism 20, a cable 24 connected to the seat legs 22 pulls the seat legs 22 in a pulling direction A when the vehicle seat 1 is flipped up. As a result, the seat legs 22 rotate from the support position Q1 to the storage position Q2 around a rotation center 22a.

[0029] The interlocking mechanism 20 also functions to move the buckle 10 from the use position P1 to the retracted position P2 in conjunction with the aforementioned seat leg storage operation (corresponding to the "predetermined input operation"). Here, the "use position P1" is a position exposed on the surface side of the seat cushion 2. In contrast, the "retracted position P2" is a position retracted further back than the use position P1.

[0030] 2-1. Buckle 10 Structure As shown in FIG. 2, the upper part of the buckle 10 is provided with an insertion port 11 through which a plate-shaped tongue (not shown) is inserted to connect the tongue, and an operation button 12 that is manually operated by the occupant to disconnect the tongue.

[0031] 2-2. Structure of the storage section 4 3 and 4, the seat cushion 2 has a urethane portion 2a made of a cushioning material, a skin portion 2b made of a skin material that covers the outer periphery of the urethane portion 2a, and a storage portion 4 that is formed by a part of the skin portion 2b. The storage portion 4 is a recessed portion provided in the seat cushion 2. When viewed from above in the vehicle height direction Z, the storage portion 4 has a substantially rectangular shape that follows the outline of the buckle 10, and has four side walls 4a and one bottom plate 4b.

[0032] In this embodiment, the side wall 4a and bottom plate 4b of the storage section 4 function as the elastic portion 40 made of an elastic material. Therefore, when the buckle 10 is stored in the storage section 4, it is constantly elastically biased by the elastic portion 40 (the side wall 4a and the bottom plate 4b) from the retracted position P2 (see FIG. 4) toward the use position P1 (see FIG. 3). In this embodiment, the side wall 4a and the bottom plate 4b, which are components that function to store the buckle 10, also function as the elastic portion 40. This eliminates the need for a dedicated part for the elastic portion 40, thereby avoiding a complex structure. Note that, if necessary, the function of the elastic portion 40 may be imparted to only one of the side wall 4a and the bottom plate 4b of the storage section 4.

[0033] 2-3. Structure of interlocking mechanism 20 As shown in FIG. 3 , the interlocking mechanism 20 includes a belt-shaped member 21 that connects the buckle 10 to the seat leg 22 and an engagement portion 22b that is provided on the seat leg 22 so as to be able to interfere with the belt-shaped member 21, in order to realize the aforementioned function of moving the buckle 10 from the use position P1 to the retracted position P2. The belt-shaped member 21 extends downward from the lower end of the buckle 10, and its extending tip is fixed to the seat leg 22 by fixing members 21a and 21b. The engagement portion 22b is preferably configured to have a curved shape that is convexly curved toward the belt-shaped member 21. This reduces resistance when the engagement portion 22b interferes with the belt-shaped member 21. One end of a cable 24 is connected to the seat leg 22 between the engagement portion 22b and the fixing portion formed by the fixing members 21a and 21b.

[0034] 3. Buckle 10 Operation The operation of the buckle 10 will now be described with reference to Figures 1, 3 and 4. This operation includes a buckle retraction operation and a buckle return operation, which will be described below.

[0035] 3-1. Buckle retraction operation As shown in FIG. 1, when a user flips up the vehicle seat 1 to the side with the seat back 3 tilted forward, a seat leg stowing action (corresponding to a "predetermined input action") occurs in conjunction with this action. In this seat leg stowing action, the seat leg 22 is pulled by the cable 24 in a pulling direction A. Then, as shown in FIG. 4, the seat leg 22 rotates in a first direction B1 from a support position Q1 to a storage position Q2 around a rotation center 22a. When the seat leg 22 rotates from the support position Q1 to the storage position Q2, the engaging portion 22b of the seat leg 22 interferes with the belt-shaped member 21 and acts to pull the belt-shaped member 21 downward in the vehicle height direction Z. At this time, the buckle 10 receives a downward tensile load from the belt-shaped member 21 and descends in the storage space of the storage portion 4 from the use position P1 to a retracted position P2, which is lower than the use position P1, against the elastic biasing force of the elastic portion 40. This completes the buckle retraction operation.

[0036] 3-2. Buckle return operation When the user performs an operation to return the vehicle seat 1 from the flipped-up state to the normal state, the pulling action of the seat leg 22 by the cable 24 is released, and an operation opposite to the seat leg retracting action occurs in conjunction with this action. That is, the seat leg retracting action, which is a predetermined input action, is released. At this time, the seat leg 22 rotates in the second direction B2 (see FIG. 4) from the retracted position Q2 to the support position Q1 around the rotation center 22a in accordance with the elastic biasing force of the return spring member (not shown). When the seat leg 22 rotates from the retracted position Q2 to the support position Q1, the interference of the engagement portion 22b of the seat leg 22 with the belt-shaped member 21 is released. At this time, the buckle 10 is no longer subjected to the downward tensile load from the belt-shaped member 21, and therefore returns within the storage space of the storage portion 4 from the retracted position P2 to the use position P1 in accordance with the elastic biasing force of the elastic portion 40 (see FIG. 3). This completes the buckle return action.

[0037] 4. Effects The effects of the above-described first embodiment will be described below.

[0038] According to the vehicle seat structure 101, the buckle 10, housed in the housing 4 that opens on the surface side of the seat cushion 2 of the vehicle seat 1, moves from a use position P1 exposed on the surface side of the seat cushion 2 to a retracted position P2 via an interlocking mechanism 20 that is interlocked with the seat leg retracting operation. The retracted position P2 is located farther from the surface of the seat cushion 2 than the use position P1. Therefore, by actively moving the buckle 10 from the use position P1 to the retracted position P2 using the interlocking mechanism 20, the buckle 10 can be prevented from protruding from the surface of the seat cushion 2, thereby preventing the buckle 10 from applying a pressure load that could cause indentations on the surface of the seat back 3. This is particularly effective when it is desired to thin the vehicle seat 1 to expand luggage space. Another advantage is that using the seat leg retracting operation to move the buckle 10 eliminates the need for additional functionality.

[0039] Therefore, according to the above-described first embodiment, it is possible to provide the vehicle seat structure 101 that can reliably prevent the formation of an indentation on the vehicle seat 1 due to the buckle 10.

[0040] Furthermore, according to the vehicle seat structure 101, the buckle 10 can be moved from the use position P1 to the retracted position P2 in conjunction with the seat leg stowing operation that occurs in conjunction with the operation of flipping the vehicle seat 1 sideways with the seat back 3 in a forward-folded state. In particular, in the seat leg stowing operation, the buckle 10 can be moved from the use position P1 to the retracted position P2 by utilizing a simple structure in which the engagement portion 22b of the seat leg 22 interferes with the belt-shaped member 21 that connects the buckle 10 and the seat leg 22.

[0041] Furthermore, according to the vehicle seat structure 101, when the seat leg storage operation, which is a predetermined input operation, is released, the buckle 10 can be returned to the use position P1 by utilizing the elastic portion 40, which always elastically biases the buckle 10 from the retracted position P2 toward the use position P1.

[0042] Next, other embodiments related to the above-described embodiment 1 will be described with reference to the drawings. In the other embodiments, the same elements as those in embodiment 1 are denoted by the same reference numerals, and the description of the same elements will be omitted.

[0043] (Embodiment 2) 5, in a vehicle seat 1A according to the second embodiment, a seat cushion frame 2c forming the framework of the seat cushion 2 and a seat back frame 3a forming the framework of the seat back 3 are connected by a connecting bracket 2d. The seat back frame 3a is configured to be rotatable around a rotation center 3b relative to the connecting bracket 2d.

[0044] 6, the vehicle seat structure 102 of the second embodiment includes an interlocking mechanism 30 having a different structure from the interlocking mechanism 20 of the first embodiment. The interlocking mechanism 30 functions to move the buckle 10 from the use position P1 to the retracted position P2 in conjunction with a seatback forward-tilting operation (corresponding to a "predetermined input operation") that moves the seatback 3 of the vehicle seat 1A from an upright position R1 to a forward-tilted position R2 relative to the seat cushion 2.

[0045] To achieve the above-mentioned functions, the interlocking mechanism 30 has a cable fixing portion 31, a cable 32, and multiple suspending members 33. The cable fixing portion 31 is a hook bracket provided on the seat back frame 3a. The cable 32 is a connecting member for connecting the buckle 10 and the cable fixing portion 31. The multiple suspending members 33 are provided on the seat cushion frame 2c of the seat cushion 2 for suspending the cable 32. To ensure smooth movement of the cable 32, it is preferable to use a rotatable pulley or a rotating support with bearings as the suspending member 33. In this embodiment, the buckle 10 is fixed to the vehicle floor via the belt-shaped member 21.

[0046] As shown in FIG. 7, when the user performs a predetermined input action, which is a seatback forward tilting action, the seatback 3 moves in a first direction C1 from an upright position R1 to a forward-tilted position R2. When the seatback 3 moves from the upright position R1 to the forward-tilted position R2, the cable fixing portion 31 moves forward. As a result, the cable fixing portion 31 retracts the cable 32, which is hung around the multiple hanging members 33, forward. At this time, the buckle 10 receives a downward tensile load from the cable 32, and therefore descends within the accommodation space in the accommodation portion 4 from the use position P1 to the retracted position P2 against the elastic biasing force of the elastic portion 40. This completes the buckle retraction action.

[0047] On the other hand, when the user performs an operation to return the seat back 3 from the forward-tilted state to the normal state, the seat back 3 moves in the second direction C2 (see FIG. 7) from the forward-tilted position R2 to the upright position R1. As the seat back 3 moves from the forward-tilted position R2 to the upright position R1, the downward tensile load that the buckle 10 receives from the cable 32 gradually decreases, and the buckle 10 eventually no longer receives the downward tensile load from the cable 32. Therefore, the buckle 10 returns from the retracted position P2 to the use position P1 in the accommodation space within the accommodation portion 4 in accordance with the elastic biasing force of the elastic portion 40 (see FIG. 6). This completes the buckle return operation.

[0048] The other configurations are the same as those of the vehicle seat structure 101 of the first embodiment.

[0049] According to the vehicle seat structure 102 of the second embodiment, the interlocking mechanism 30 is operated in conjunction with the seat back forward folding action that moves the seat back 3 of the vehicle seat 1 from the upright position R1 to the forward folding position R2, and the cable 32 that is hung around the multiple hanging members 33 is pulled by the cable fixing part 31, thereby moving the buckle 10 from the use position P1 to the retracted position P2. In addition, by using the seat back forward folding action to move the buckle 10, there is an advantage that there is no need to add a new function.

[0050] In addition, the same effects as those of the first embodiment are achieved.

[0051] 5. Modifications The present invention is not limited to the above-described embodiment, and various applications and modifications are possible without departing from the scope of the present invention. For example, the following embodiments can be implemented by applying the above-described embodiment.

[0052] In the above embodiment, the seat cushion 2 is used as the seat component that provides the storage portion 4 between the seat cushion 2 and the seat back 3 of the vehicle seat 1, but instead, the seat back 3 may be used as the seat component that provides the storage portion 4. In other words, the buckle 10 may be stored in the storage portion 4 on the seat back 3 side.

[0053] In the above-described embodiment, the storage section 4 is illustrated as a recessed portion provided in the seat cushion 2, but instead, the storage section 4 may be a through hole that penetrates the seat cushion 2 in the vehicle height direction Z.

[0054] In the above-described embodiment, an example has been given of the case where the buckle 10 is elastically biased by using the side wall portion 4a and the bottom plate portion 4b of the storage portion 4, but instead, the buckle 10 may be elastically biased by using a dedicated elastic member such as a spring member. [Explanation of symbols]

[0055] DESCRIPTION OF SYMBOLS 1,1A...vehicle seat, 2...seat cushion (seat constituent member), 2c...seat cushion frame, 3...seat back, 3a...seat back frame, 4...storage section, 4a...side wall section, 4b...bottom plate section, 10...buckle, 20,30...interlocking mechanism section, 21...belt-shaped member, 22...seat leg section, 22b...engagement section, 31...cable fixing section, 32...cable, 33...hanging member, 40...elastic section, 101,102...vehicle seat structure, P1...usage position, P2...retracted position, Q1...support position, Q2...storage position, R1...standing position, R2...forward tilt position

Claims

1. a seat component that is a seat cushion or a seat back of a vehicle seat; a buckle accommodated in an accommodating portion that opens on the front surface side of the seat constituent member; a linkage mechanism that moves the buckle in response to a predetermined input operation from a use position exposed on the surface side of the seat constituent member to a retracted position retracted further back than the use position; Equipped with The specified input action is either a seat leg storage action in which a seat leg rotatably connected to a seat cushion of the vehicle seat rotates from a support position relative to the seat cushion to a storage position, or a seat back forward folding action in which the seat back moves from an upright position relative to the seat cushion to a forward folding position.

2. 2. The vehicle seat structure according to claim 1, wherein the interlocking mechanism utilizes the seat leg storage action as the predetermined input action, and is configured to cause the seat leg storage action to occur in conjunction with the action of flipping the vehicle seat to the side in a forward-folded state of the seat back.

3. 3. The vehicle seat structure according to claim 2, wherein the interlocking mechanism includes a belt-shaped member that connects the buckle and the seat leg, and an engagement portion that is provided on the seat leg so as to be able to interfere with the belt-shaped member, and is configured such that when the seat leg rotates from the support position to the storage position, the engagement portion of the seat leg interferes with the belt-shaped member, thereby moving the buckle from the use position to the retracted position.

4. 2. The vehicle seat structure according to claim 1, wherein the interlocking mechanism utilizes the forward tilting motion of the seat back as the predetermined input motion, and includes a cable fixing portion provided on a seat back frame of the seat back, a cable connecting the buckle and the cable fixing portion, and a plurality of hanging members provided on a seat cushion frame of the seat cushion, and is configured such that when the seat back moves from the upright position to the forward tilting position, the cable fixing portion pulls the cable hung on the plurality of hanging members, thereby moving the buckle from the use position to the retracted position.

5. 5. The vehicle seat structure according to claim 1, further comprising an elastic portion that constantly elastically biases the buckle from the retracted position toward the use position.

6. 6. The vehicle seat structure according to claim 5, wherein the accommodation portion is a recess having a side wall portion and a bottom plate portion, and at least one of the side wall portion and the bottom plate portion is the elastic portion made of an elastic material.

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