Vehicular seat

Abstract

To provide a technique that is effective in improving performance of passenger protection performance at the time when a passenger seated on a rear seat collides with a seat back of a front seat, at the time of front collision of a vehicle.SOLUTION: A vehicular seat 12 that is provided in a vehicle 1 comprises a seat back 20 as a backrest and a collision absorption member 23 that absorbs impact inputted to the seat back 20 from a rear side. The seat back 20 has a body part 21 having the impact absorption member 23 built therein, a back lining cover part 34 covering a back side of the main body part 21, and a protrusion suppressing part 38 that suppresses a protrusion of the back lining cover part 34 when the head of a passenger C3 seated on a rear seat collides with the back lining cover part 34.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle seat to be provided in a vehicle. [Background technology]

[0002] The following Patent Document 1 discloses a conventional vehicle seat. This vehicle seat is equipped with a shock absorbing member built into the seat back in order to improve occupant protection performance in the event of a rear-end collision. The shock absorbing member is configured to absorb shock by compressively deforming when subjected to an excessive load from a seated occupant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-7936 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a vehicle in which rear seats are arranged behind the front seats, rear seat passengers seated in the rear seats are subjected to a forward load toward the seat back of the front seat during a frontal collision. In such a case, if the space between the front seats and the rear seats is relatively narrow, it is expected that the head of the rear seat passenger will collide with the rear surface of the seat back of the front seat.

[0005] Therefore, in designing this type of vehicle seat, a structure in which an impact absorbing member is built into the seat back as disclosed in Patent Document 1 can be adopted in order to improve the protection performance of rear seat passengers in the event of a frontal collision of the vehicle. According to this structure, when the front load of the head of the rear seat passenger acts on the impact absorbing member through the cover on the back side of the seat back in the event of a frontal collision of the vehicle, the impact absorbing member deforms to absorb the impact, thereby improving the protection performance of the rear seat passenger. However, when the head of the rear seat passenger collides with the cover of the seat back, if the reaction force that the rear seat passenger receives from the cover is large due to the tension of the cover, the impact cannot be absorbed as expected, and the injury value increases. In this case, a problem may occur in which the protection performance of the rear seat passenger is reduced.

[0006] The present invention has been made in consideration of such problems, and aims to provide a technology that is effective in improving occupant protection performance when a rear seat occupant collides with the seat back of the front seat during a frontal collision of the vehicle. [Means for solving the problem]

[0007] One aspect of the present invention is A vehicle seat provided in a vehicle, A seat back that serves as a backrest, An impact absorbing member that absorbs an impact input to the seat back from behind; Equipped with The seat back has a main body portion incorporating the impact absorbing member, a back cover portion covering a back surface of the main body portion, and a tension relief portion that relieves tension of the back cover portion when the head of a rear seat passenger collides from behind against the back cover portion. is located. Effect of the Invention

[0008] In the vehicle seat of the above aspect, the seat back serving as a backrest has an impact absorbing member built into the main body, and the back cover covering the back surface of the main body has a tension mitigating portion for mitigating tension of the back cover when the head of the rear seat passenger collides from behind. Therefore, this vehicle seat can reduce the effect of the reaction force that the head of the rear seat passenger receives from the tension of the back cover of the seat back during a frontal collision of the vehicle. In other words, the head of the rear seat passenger is less likely to be restrained by the back cover of the seat back. At this time, the impact absorbing member can absorb the impact that the seat back receives from the head of the rear seat passenger without being significantly hindered by the back cover, and can fulfill its original impact absorbing function. This improves the protection performance of the rear seat passenger seated in the seat at the rear of the vehicle seat.

[0009] As described above, according to the above-described aspect, it is possible to provide a technique that is effective in improving occupant protection performance when a rear seat occupant collides with a seat back during a frontal collision of the vehicle. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a side view showing a seat arrangement in the vehicle seat according to the first embodiment. [Diagram 2] 1 is a perspective view of a seat back of a vehicle seat according to a first embodiment, viewed obliquely from above and behind; [Diagram 3] 3 is a perspective view showing the seat back of FIG. 2 in a state before the second cover is attached to the first cover; FIG. [Figure 4] 4 is a cross-sectional view taken along line IV-IV in FIG. 2 . [Diagram 5] 5 is a cross-sectional view showing a state in which the second cover is attached to the first cover in the seat back of FIG. 4. [Figure 6] 4 is a cross-sectional view showing a state in an early stage of a collision in which a frontal load from a rear seat passenger's head acts on a second cover in the seat back of FIG. 3. [Figure 7] 7 is a cross-sectional view showing a state in which the head of a rear seat passenger moves toward the impact absorbing member in the seat back of FIG. 6. [Figure 8]8 is a cross-sectional view showing a state in which the impact absorbing member in the seat back of FIG. 7 is deformed. [Figure 9] FIG. 11 is a perspective view of a seat back of a vehicle seat according to a second embodiment, viewed obliquely from above and behind. [Figure 10] XX line cross-sectional view of FIG. 9. [Figure 11] 11 is a cross-sectional view showing a state in which the second cover is attached to the first cover in the seat back of FIG. 10. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] In the vehicle seat of the above-mentioned aspect, the back cover portion comprises a first cover having an opening positioned rearward of the impact absorbing member through which the head of the rear seat occupant can enter, and a second cover that blocks the opening of the first cover from the rear side, and it is preferable that the tension relief portion is configured to releasably attach the second cover to the first cover and to relieve the tension of the second cover by separating the second cover from the first cover when the second cover receives a forward load from the head of the rear seat occupant that exceeds a standard value.

[0012] According to this vehicle seat, when the head of a rear seat passenger collides from behind against the second cover of the seat back and the second cover receives a forward load exceeding a reference value, the tension mitigating portion separates the second cover from the first cover to relieve the tension of the second cover. The head of the rear seat passenger then enters the main body portion through the opening of the first cover, and the shock absorbing member built into the main body portion absorbs the shock. On the other hand, when a frontal collision of the vehicle does not occur or when the forward load received by the second cover from the head of the rear seat passenger is equal to or less than the reference value, the tension mitigating portion maintains the attachment state of the second cover to the first cover.

[0013] In the vehicle seat of the above aspect, it is preferable that a lower end portion of the second cover is fixed to the first cover, and an upper end portion and a side end portion are releasably attached to the first cover by the tension reducing portion.

[0014] According to this vehicle seat, when the head of a rear seat passenger collides, the second cover moves with its lower end as a fixed end and its upper end as a free end to open the opening of the first cover and allow the head of the rear seat passenger to enter the main body through the opening. Meanwhile, since the lower end of the second cover is always fixed to the first cover, the second cover can be easily returned from the open state of the opening of the first cover to the closed state.

[0015] In the vehicle seat of the above aspect, it is preferable that the tension reducing portion is configured so that the second cover can be repeatedly attached to and detached from the first cover.

[0016] According to this vehicle seat, by configuring the tension relief portion so that the second cover can be repeatedly attached and detached from the first cover, the second cover that has once detached from the first cover during a frontal collision of the vehicle can be easily attached back to the first cover. Therefore, it is possible to keep the man-hours and costs required for returning the second cover to its initial state low.

[0017] In the vehicle seat according to the above aspect, it is preferable that the tension reducing portion is provided in the vicinity of an edge of the opening of the first cover and along the edge of the opening.

[0018] According to this vehicle seat, by providing the tension reducing portion near and along the edge of the opening of the first cover, the dimensions of the second cover can be set to be slightly larger than the size of the opening of the first cover, which makes it possible to keep the material cost of the second cover low.

[0019] In the vehicle seat of the above aspect, it is preferable that the back cover portion includes a third cover that covers at least an upper end portion of the second cover.

[0020] According to this vehicle seat, the third cover can prevent the upper end of the second cover in the attached state from being exposed, which would result in a poor appearance.

[0021] In the vehicle seat of the above aspect, it is preferable that the opening of the first cover also serves as an inspection hatch for inspecting the main body.

[0022] According to this vehicle seat, the opening of the first cover can serve not only to allow the head of a rear seat occupant to enter during a frontal collision of the vehicle, but also to allow for inspection of the main body.

[0023] Hereinafter, specific embodiments of the vehicle seat according to the above aspect will be described with reference to the drawings.

[0024] In the drawings referred to in the following description, the front of the vehicle is indicated by an arrow FR, and the upper side of the vehicle is indicated by an arrow UP. Furthermore, unless otherwise specified, the front-rear direction (vehicle length direction) of the vehicle seat when the seat back is in the upright position is indicated by an arrow X, the left-right direction (vehicle width direction) of the vehicle seat is indicated by an arrow Y, and the up-down direction (vehicle height direction) of the vehicle seat is indicated by an arrow Z.

[0025] (Embodiment 1) 1, a vehicle 1 according to the first embodiment has a seat arrangement structure with three rows arranged on a floor 2. That is, the vehicle 1 includes a vehicle seat 11 which is a row of front seats, and vehicle seats 12 and 13 which are two rows of rear seats arranged behind the vehicle seat 11 in the front-rear direction X.

[0026] The vehicle seat 11 is a type having a headrest. An occupant C1 sits in the vehicle seat 11. In contrast, the vehicle seats 12 and 13 are high-back types without a headrest. An occupant C2 sits in the vehicle seat 12, and an occupant C3 sits in the vehicle seat 13. At this time, the occupant C3 becomes a rear seat occupant C3 who sits in the vehicle seat 13, which is a rear seat relative to the vehicle seat 12. In this embodiment, an arrangement structure is adopted in which the space between the vehicle seat 12 and the vehicle seat 13 is relatively narrow.

[0027] The seat arrangement in the vehicle 1 is merely illustrative and is not limited to that shown in Fig. 1. For example, the rear seats may be arranged in three or more rows. The structure and shape of each vehicle seat may be appropriately changed from that shown in Fig. 1. For example, the vehicle seats 12, 13 may be changed to a type having a headrest.

[0028] 1. Overall structure of vehicle seat 12 1, a vehicle seat 12 (hereinafter simply referred to as "seat 12") includes a seat cushion 40 having a seating surface, a seat back 20 standing upward in the vertical direction Z from the seat cushion 40 and serving as a backrest for an occupant C2, and an impact absorbing member 23 that absorbs an impact input from behind to the seat back 20. The seat back 20 includes a main body 21, a seat cover 30, and a tension absorbing portion 38.

[0029] As shown in FIG. 2, the main body 21 has an impact absorbing member 23 built in. The impact absorbing member 23 is a plate-shaped member made of a metal material, and is configured to be plastically deformable by a load input from the rear. The impact absorbing member 23 is fixed to a metal frame pipe 22 that forms a part of the seat skeleton. Although not shown, a pad made of a material (e.g., a foam such as urethane foam) softer than a seat skin 30 described later is provided on the outer periphery of the impact absorbing member 23. The impact absorbing member 23 may be a member that absorbs impact by elastic deformation, in addition to a member that absorbs impact by plastic deformation. In this case, the material of the impact absorbing member 23 is not particularly limited, and various materials can be used.

[0030] The main body 21 is covered with a flexible seat cover 30. The seat cover 30 in this embodiment is composed of multiple cover components including a front cover portion 31 that covers the front surface of the main body 21, an upper cover portion 32 that covers the upper surface of the main body 21, a side cover portion 33 that covers the side surfaces of the main body 21, and a rear cover portion 34 that covers the rear surface 21a of the main body 21. The multiple cover components are integrated together by sewing.

[0031] The material of the seat skin 30 is not particularly limited as long as it has flexibility. For example, materials such as genuine leather, artificial leather, PVC leather, and fabric (cloth) can be appropriately used as the material of the seat skin 30.

[0032] 2. Structure of the back cover part 34 As shown in Figs. 2 and 3, the back cover portion 34 includes a first cover 35 and a second cover 36, both of which are sheet-shaped.

[0033] The first cover 35 is a cover member having an opening 35a disposed behind the impact absorbing member 23 (see FIG. 3). The opening 35a of the first cover 35 is used as an entrance that allows the head H (see FIG. 6) of the rear seat passenger C3 to enter. Therefore, the dimensions of the opening 35a of the first cover 35 are set to be larger than the size of the head H of the rear seat passenger C3. In addition, the opening 35a is also used as an inspection hatch for inspecting the main body 21.

[0034] The second cover 36 is a cover member that closes the opening 35a of the first cover 35 from the rear side. The second cover 36 has a lower end 36a fixed to the first cover 35. That is, the lower end 36a of the second cover 36 is sandwiched between the first cover 35 and another cover 39 and sewn thereto. In addition, the upper end 36b and both side end portions 36c in the left-right direction Y of the second cover 36 are detachably attached to the first cover 35 by tension relief portions 38. The second cover 36 can also be called a "split cover" that is split from the first cover 35.

[0035] 2, an assumed collision area A is set on the back surface of the second cover 36, where it is assumed that the head H (see FIG. 6) of a rear seat passenger C3 will collide in the event of a frontal collision of the vehicle 1. The assumed collision area A is set at a position that partially overlaps with the opening 35a of the first cover 35 when the second cover 36 is viewed from behind.

[0036] 3. Structure of tension relief section 38 The tension reducing portion 38 functions to reduce tension of the second cover 36 when the head H of the rear seat passenger C3 collides from behind against the second cover 36 of the back cover portion 34. In order to achieve this function, the tension reducing portion 38 is configured to releasably attach the second cover 36 to the first cover 35, and to reduce tension of the second cover 36 by separating the second cover 36 from the first cover 35 when the second cover 36 receives a front load F (see FIG. 6) from the head H of the rear seat passenger C3 that exceeds a reference value. That is, the tension reducing portion 38 maintains the attachment state of the second cover 36 to the first cover 35 when no front load F is acting on the second cover 36 from behind or when the front load F is lower than an expected value.

[0037] In this embodiment, tension relief portion 38 is a hook-and-loop fastener consisting of one detachable portion 38a provided on first cover 35 and the other detachable portion 38b provided on second cover 36. The hook-and-loop fastener is of a known structure and is not shown, but is a tape that can be freely attached and detached using a pile structure. A first fastener structure having a small mushroom-shaped expander (or a hook-shaped hook) is arranged in detachable portion 38a, and a second fastener structure having a loop is arranged in detachable portion 38b.

[0038] According to the tension relief part 38, when the two detachable parts 38a, 38b are attached to each other, the mushroom (or hook) of the first fastener structure is caught (entangled) with the loop of the second fastener structure, so that they are easily attached to each other and in an attached state. On the other hand, when the two detachable parts 38a, 38b are pulled with a load of a predetermined value or more, the mushroom (or hook) of the first fastener structure is released from the entanglement and peeled off from each other and in a detached state. As a result, the tension relief part 38 is configured so that the second cover 36 can be repeatedly attached to and detached from the first cover 35. Note that the detachable part 38a may be provided on the second cover 36, and the detachable part 38b may be provided on the first cover 35.

[0039] 2 and 3, the two detachable portions 38a, 38b constituting the tension mitigating portion 38 are provided along the opening edge 35b near the opening edge 35b of the opening 35a of the first cover 35. In this embodiment, a plurality of tension mitigating portions 38 are provided at intervals along the opening edge 35b. Alternatively, all or some of the plurality of tension mitigating portions 38 may be integrated into one.

[0040] As shown in Fig. 5, when attaching the second cover 36 to the first cover 35, the user grips the second cover 36 and moves it so that the positions of the two detachable portions 38a, 38b of each tension relief portion 38 are roughly aligned. At this time, the user rotates the second cover 36, which is the upper end portion 36b, which is the free end portion, toward the first cover 35, around the lower end portion 36a, which is the fixed end portion. As a result, as shown in Fig. 4, the second cover 36 is attached to the first cover 35 in a tensioned state.

[0041] 4. Operation of seat back 20 Next, the operation of the seat back 20 of the seat 12 in the event of a frontal collision of the vehicle 1 will be described with reference to FIGS.

[0042] As shown in FIG. 6, when the vehicle 1 is hit from the front, the rear seat passenger C3 is tilted forward by the reaction. As a result, the head H of the rear seat passenger C3 hits the expected collision area A (see FIG. 2) of the seat back 20. As shown in FIG. 7, when the second cover 36 of the back cover part 34 receives a front load F from the head H of the rear seat passenger C3 that exceeds a reference value, the two detachable parts 38a, 38b of the tension relief part 38 are peeled off from each other. As a result, the second cover 36 is released from the first cover 35 leaving its lower end part 36a, and the tension in the initial state is relieved, and the second cover 36 is bent so as to enter the opening 35a of the first cover 35. That is, the stress generated in the second cover 36 is relieved by the tension relief part 38. Accordingly, the head H of the rear seat passenger C3 enters the opening 35a of the first cover 35 and moves toward the impact absorbing member 23. After the head H of the rear seat passenger C3 reaches the impact absorbing member 23, the impact absorbing member 23 plastically deforms forward as shown in FIG. 8, thereby absorbing the impact.

[0043] 5. Effects Next, the effects of the above-mentioned embodiment 1 will be described.

[0044] In the seat 12 of the first embodiment, the seat back 20 serving as a backrest has the impact absorbing member 23 built into the main body 21 and has a tension mitigating portion 38 that relieves the tension of the back cover portion 34 when the head H of the rear seat passenger C3 collides with the back cover portion 34 from behind. Therefore, according to this seat 12, the influence of the reaction force that the head H of the rear seat passenger C3 receives from the tension of the back cover portion 34 of the seat back 20 during a frontal collision of the vehicle 1 can be reduced. That is, the head H of the rear seat passenger C3 is less likely to be restrained by the back cover portion 34 of the seat back 20. At this time, the impact absorbing member 23 can absorb the impact that the seat back 20 receives from the head H of the rear seat passenger C3 without being significantly hindered by the back cover portion 34, and can fulfill its original impact absorbing function. This improves the protection performance of the rear seat passenger C3 seated in the seat 13 behind the seat 12.

[0045] As described above, according to the seat 12 of the first embodiment, it is possible to improve the occupant protection performance when the rear seat occupant C3 collides with the seat back 20 during a frontal collision of the vehicle 1.

[0046] According to the seat 12 of the first embodiment, when the head H of the rear seat passenger C3 collides from behind against the second cover 36 of the seat back 20 and the second cover 36 receives a forward load F exceeding a reference value, the tension mitigating portion 38 separates the second cover 36 from the first cover 35 to relieve the tension of the second cover 36. Then, the head H of the rear seat passenger C3 enters the main body portion 21 through the opening 35a of the first cover 35, and the shock absorbing member 23 built into the main body portion 21 can absorb the shock. On the other hand, when a frontal collision of the vehicle 1 does not occur or when the forward load F received by the second cover 36 from the head H of the rear seat passenger C3 is equal to or less than a reference value, the tension mitigating portion 38 maintains the attachment state of the second cover 36 to the first cover 35.

[0047] According to the seat 12 of the first embodiment, when the head H of the rear seat occupant C3 collides, the second cover 36 moves with the lower end 36a as a fixed end and the upper end 36b as a free end to open the opening 35a of the first cover 35, allowing the head H of the rear seat occupant C3 to enter the main body 21 through the opening 35a. Meanwhile, since the lower end 36a of the second cover 36 is always fixed to the first cover 35, the second cover 36 can be easily returned from the open state of the opening 35a of the first cover 35 to the closed state.

[0048] According to the seat 12 of the first embodiment, by configuring the tension relief portion 38 so that the second cover 36 can be repeatedly attached and detached to the first cover 35, the second cover 36 that has once detached from the first cover 35 upon a frontal collision of the vehicle 1 can be easily attached back to the first cover 35. Therefore, it is possible to keep the man-hours and costs required for the work of returning the second cover 36 to its initial state low.

[0049] According to the sheet 12 of the first embodiment, by providing the tension reducing portion 38 in the vicinity of and along the opening edge 35b of the opening 35a of the first cover 35, it is possible to set the dimensions of the second cover 36 to be slightly larger than the size of the opening 35a of the first cover 35. This makes it possible to keep the material cost of the second cover 36 low.

[0050] According to the seat 12 of embodiment 1, the opening 35a of the first cover 35 can serve not only to allow the head H of the rear seat occupant C3 to enter in the event of a frontal collision of the vehicle 1, but also to serve the function of inspecting the main body portion 21.

[0051] Next, another embodiment related to the above embodiment will be described with reference to the drawings. In the other embodiment, the same elements as those in the above embodiment are denoted by the same reference numerals, and the description of the same elements will be omitted.

[0052] (Embodiment 2) 9, the seat 12 of the second embodiment includes a seat back 20A having a different structure from that of the first embodiment. That is, the seat back cover part 34A of the seat back 20A is different from the seat back cover part 34 of the first embodiment in that it includes a sheet-shaped third cover 37 in addition to the first cover 35 and the second cover 36. The third cover 37 is provided so as to cover the upper end part 36b of the second cover 36.

[0053] As shown in Fig. 11, when attaching the second cover 36 to the first cover 35, the user holds the second cover 36 and moves the two detachable parts 38a, 38b of each tension relief part 38 so that their positions generally match. At this time, the user inserts the upper end 36b of the second cover 36 into the gap 37a between the first cover 35 and the third cover 37 while rotating the upper end 36b, which is the free end, toward the first cover 35 around the lower end 36a, which is the fixed end. As a result, as shown in Fig. 10, the second cover 36 is attached to the first cover 35 in a tensioned state, and the upper end 36b of the second cover 36 is covered by the third cover 37 so that it cannot be seen from the outside.

[0054] The other configurations and operations are the same as those in the first embodiment.

[0055] According to the seat 12 of the second embodiment, the third cover 37 can prevent the upper end 36b of the second cover 36 in the attached state to the first cover 35 from being exposed, which would result in a poor appearance.

[0056] In addition, the same effects as those of the first embodiment are achieved.

[0057] In a modification particularly related to the second embodiment, in addition to the top end 36b of the second cover 36, the side end 36c of the second cover 36 may be covered with another cover. This enhances the effect of preventing the appearance of the second cover 36 attached to the first cover from being deteriorated.

[0058] The present invention is not limited to the exemplary embodiment described above, and various applications and modifications are possible without departing from the scope of the present invention. For example, the following embodiments can be embodied by applying the above embodiment.

[0059] In the above embodiment, the tension relief portion 38 is a hook-and-loop fastener, but the tension relief portion 38 is not limited to a hook-and-loop fastener. For example, the tension relief portion may be formed by a joining means such as sewing or bonding, and the second cover 36 may be removably attached to the first cover 35.

[0060] In the above-described embodiment, an example is given of a structure in which the second cover 36 detaches from the first cover 35, leaving behind its lower end portion 36a, in the event of a frontal collision of the vehicle 1. However, instead of this, a structure in which the entire second cover 36 completely detaches from the first cover 35 in the event of a frontal collision of the vehicle 1 may be adopted.

[0061] In the above-described embodiment, the number of covers in the rear cover portion 34, 34A is two or three, but the number of covers is not limited to this and may be one or four or more as necessary. [Explanation of symbols]

[0062] 1...vehicle, 11,12,13...vehicle seat (seat), 20,20A...seat back, 21...main body, 21a...back, 23...shock absorbing member, 34,34A...back cover, 35...first cover, 35a...opening, 35b...opening edge, 36...second cover, 36a...lower end, 36b...upper end, 36c...side end, 37...third cover, 38...tension relief portion, C3...rear seat occupant, F...forward load, H...head

Claims

1. A vehicle seat provided in a vehicle, A seat back that serves as a backrest, An impact absorbing member that absorbs an impact input to the seat back from behind; Equipped with The seat back of this vehicle seat has a main body portion that incorporates the impact absorbing member, a back cover portion that covers the back surface of the main body portion, and a tension relief portion that relieves tension in the back cover portion when the head of a rear seat occupant collides from behind against the back cover portion.

2. The rear cover portion includes a first cover having an opening disposed behind the impact absorbing member so that the head of the rear seat occupant can enter, and a second cover that closes the opening of the first cover from the rear side, 2. The vehicle seat according to claim 1, wherein the tension relief portion is configured to releasably attach the second cover to the first cover and to relieve tension of the second cover by separating the second cover from the first cover when the second cover receives a forward load from the head of the rear seat passenger that exceeds a reference value.

3. 3. The vehicle seat according to claim 2, wherein a lower end of the second cover is fixed to the first cover, and an upper end and a side end of the second cover are releasably attached to the first cover by the tension reducing portion.

4. The vehicle seat according to claim 2 or 3, wherein the tension reducing portion is configured so that the second cover can be repeatedly attached to and detached from the first cover.

5. The vehicle seat according to claim 2 or 3, wherein the tension reducing portion is provided in the vicinity of an edge of the opening of the first cover and along the edge of the opening.

6. The vehicle seat according to claim 2 or 3, wherein the back cover portion includes a third cover that covers at least an upper end portion of the second cover.

7. The vehicle seat according to claim 2 or 3, wherein the opening of the first cover is also used as an inspection opening for inspecting the main body.

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