Vehicle seat

Abstract

To provide a vehicle seat capable of folding a seat back forward by simple work.SOLUTION: A vehicle seat 10 includes a first support part 12 and a second support part 14 having a seat back 30 and a headrest 40. The first support part 12 has a seat cushion body 21 and a movable support part 22 movable with respect to the seat cushion body 21. When the movable support part 22 is in a second position B, an accommodation space 12S is formed between the movable support part 22 and the seat cushion body 21. The accommodation space 12S is a space in which at least a part of the headrest 40 is accommodated when the seat back 30 is folded forward.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] Patent Document 1 discloses a technique for tilting a seat back forward to a nearly horizontal position. In this technique, a seat cushion is configured to be movable forward from a normal position. When the seat cushion is moved forward, the tilted seat back overlaps a lower portion of the seat cushion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-297907 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned technology, it is necessary to remove the headrest before tilting the seat back forward, which makes the task of tilting the seat back forward cumbersome.

[0005] An object of the present invention is to provide a vehicle seat whose seat back can be folded forward by a simple operation. [Means for solving the problem]

[0006] A first embodiment of a vehicle seat includes a first support portion that supports the buttocks and thighs of an occupant, and a second support portion that has a seat back that supports the back of the occupant and a headrest that supports the head of the occupant, wherein the first support portion has a seat cushion main body that supports at least the buttocks of the occupant, and a movable support portion that supports the thighs or lower legs of the occupant and is movable between a first position and a second position relative to the seat cushion main body, and when the movable support portion is in the second position, a storage space is formed between the movable support portion and the seat cushion main body in which at least a portion of the headrest is stored when the seat back is tilted forward.

[0007] In this aspect, the vehicle seat includes a first support portion that supports the buttocks and thighs of an occupant, and a second support portion that has a seat back that supports the back of the occupant and a headrest that supports the head of the occupant.

[0008] However, the riding comfort of passengers may be adversely affected by factors such as the shape of the vehicle floor. Therefore, in this aspect, the first support portion has a seat cushion main body that supports at least the buttocks of the occupant, and a movable support portion that supports the thighs or lower legs of the occupant and is movable relative to the seat cushion main body. Therefore, the movable support portion can be moved to appropriately support the thighs or lower legs of the occupant, thereby improving the riding comfort of the occupant.

[0009] Incidentally, when attempting to tilt the seat back forward to a substantially horizontal position, the headrest may interfere with the first support portion, making it impossible to achieve the substantially horizontal position. In this embodiment, the movable support portion is movable between a first position and a second position. When the movable support portion is in the second position, an accommodation space is formed between the movable support portion and the seat cushion main body. The accommodation space is a space in which at least a part of the headrest is accommodated when the seat back is folded forward. This makes it possible to tilt the seat back forward to a substantially horizontal position without the need to remove the headrest.

[0010] In the embodiment described below, the movable support part is an extension that supports the thighs of the occupant or an ottoman that supports the lower leg, but the movable support part of this aspect is not limited to these. For example, the movable support part of this aspect may support both the thighs and the lower leg of the occupant. In the embodiment described below, the vehicle seat is mounted in an electric vehicle having a battery under the floor, but the vehicle seat of this aspect is not limited to this. In the embodiment described below, the vehicle seat is a rear seat seat, but the vehicle seat of this aspect is not limited to this. In the embodiment described later, the headrest is removable from the seat back, but the headrest of the present disclosure is not limited to this. The headrest of the present disclosure may be non-detachable from the seat back. In the embodiment described later, the headrest is a so-called saddle-type headrest, but the headrest of the present embodiment is not limited to this.

[0011] The vehicle seat of a second aspect is the same as that of the first aspect, wherein the movable support portion is an extension that supports thighs of an occupant and is capable of extending the length of the seat surface.

[0012] In this aspect, the movable support portion is an extension that supports the thighs of the occupant and is capable of extending the length of the seat surface. This allows the length of the seating surface to be adjusted to improve riding comfort, and also allows the space formed between the extension and the seat cushion body to be used as storage space.

[0013] The vehicle seat of a third aspect is based on the first aspect, wherein the movable support portion is an ottoman that supports lower legs of an occupant and is movable with respect to the seat cushion main body.

[0014] In this aspect, the movable support portion is an ottoman that supports the lower legs of the occupant and is movable relative to the seat cushion main body. As a result, the ottoman can support the lower legs, improving the riding comfort, and the space formed between the ottoman and the seat cushion body can be used as a storage space.

[0015] The vehicle seat of a fourth aspect is any one of the first to third aspects, wherein the movable support portion is configured to move to the second position when an operation is performed to tilt the seat back forward.

[0016] In this aspect, the movable support portion is configured to move to the second position when an operation is performed to tilt the seat back forward. Therefore, there is no need to perform a separate operation to move the movable support portion to the second position, and the seat back can be tilted forward with an even simpler operation.

[0017] In the embodiment described below, the operation for tilting the seat back forward is an operation on an operating unit provided on one side of the seat back, or an operation on a remote operating unit provided in the luggage compartment, etc., but this aspect is not limited to these. Effect of the Invention

[0018] As described above, according to the present invention, a vehicle seat in which the seat back can be folded forward by a simple operation is provided. [Brief description of the drawings]

[0019] [Figure 1] 1 is a schematic diagram showing a vehicle seat with a seat back in an upright position and an extension (movable support portion) in a first position; [Diagram 2] 1 is a schematic diagram showing a vehicle seat with the seat back in an upright position and the extension in a second position; FIG. [Diagram 3]1 is a schematic diagram showing a vehicle seat with a seat back in a forward-tilted position and an extension in a second position; FIG. [Figure 4] 1A and 1B are schematic diagrams showing the sliding structure of an extension, in which (A) shows the first position and (B) shows the second position. [Diagram 5] 5A and 5B are schematic diagrams showing a modified example of a vehicle seat, in which (A) shows a passenger use position and (B) shows a second position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, a vehicle seat 10 according to an embodiment of the present invention will be described.

[0021] The arrows FR and UP shown in each drawing indicate the front and upper directions, respectively, of the vehicle seat 10. In the following description, when the front-rear, left-right, and up-down directions are simply used, they indicate directions relative to the vehicle seat 10.

[0022] 1 to 3 are schematic diagrams showing a vehicle seat 10 of the present embodiment.

[0023] The vehicle seat 10 is a rear seat vehicle seat. Behind the vehicle seat 10, a luggage compartment 90 is formed. The front direction of the vehicle seat 10 coincides with the front direction of the vehicle, and the up direction of the vehicle seat 10 coincides with the up direction of the vehicle.

[0024] 1, the vehicle seat 10 includes a first support portion 12 and a second support portion 14. The first support portion 12 supports the lower body of an occupant, and the second support portion 14 supports the upper body of the occupant.

[0025] The first support portion 12 includes a seat cushion 20 that supports the buttocks and thighs of the occupant. The second support portion 14 includes a seat back 30 that supports the back of the occupant, and a head rest 40 that supports the head of the occupant.

[0026] The seat back 30 is connected to the rear end of the seat cushion 20 and is configured to be able to be tilted forward. By tilting the seat back 30 forward, the seat back 30 can be placed over the seat cushion 20 (see FIG. 3). By tilting the seat back 30 forward, the space above the vehicle seat 10 can also be used as a luggage compartment 90, and as a result, the luggage compartment 90 can be expanded.

[0027] The vehicle seat 10 includes a seat back locking mechanism 61 that locks the seat back 30 in the upright position A (see FIG. 1). The seatback locking mechanism 61 is provided, for example, on the seatback 30 side and the vehicle body side, and locks the seatback 30 in the upright state A by engaging a mechanism on the seatback 30 side with a mechanism on the vehicle body side. The seatback locking mechanism 61 also has an unlocking operation unit (not shown). The unlocking operation unit is, for example, a button provided on the shoulder portion of the seatback 30.

[0028] The headrest 40 is removably attached to the seat back 30 . The headrest 40 is a so-called saddle-shaped headrest. That is, the headrest 40 has a first portion 41 located above the seat back 30 and a second portion 42 located on the front side of the seat back 30.

[0029] The seat cushion 20 has a seat cushion main body 21 and an extension 22 serving as a "movable support portion." The seat cushion main body 21 supports at least the buttocks of the occupant. The extension 22 supports the thighs of the occupant and is configured to be slidable in the approximately front-rear direction. The extension 22 is the front part of the seat cushion 20 and constitutes a part that supports the thighs and backs of the knees of the occupant. The extension 22 is also called a thigh support extension, for example. By moving the extension 22 forward, the length of the seat surface of the seat cushion 20 can be extended. The seat cushion main body 21 constitutes the portion of the seat cushion 20 other than the extension 22 .

[0030] The front portion of the seat surface of the seat cushion 20 is higher than the rear portion, thereby ensuring a comfortable ride for the occupant even when the floor of the vehicle is high. Correspondingly, the extension 22 is configured to be movable in a diagonal forward direction, specifically inclined slightly upward toward the front. In other words, the extension 22 is movable in a direction along the seat surface of the seat cushion 20.

[0031] The extension 22 is movable between a first position A and a second position B. As shown in Fig. 1, the first position A is the rearmost position within the movable range of the extension 22. As shown in Figs. 2 and 3, the second position B is the frontmost position within the movable range of the extension 22.

[0032] As shown in Fig. 2, when the extension 22 is in the second position B, an accommodation space 12S is formed between the extension 22 and the seat cushion main body 21. As shown in Fig. 3, the accommodation space 12S is a space in which at least a part of the headrest 40 is accommodated when the seat back 30 is tilted forward. As a result, forward tilting of the seat back 30 is not hindered by the headrest 40, compared to a state in which the extension 22 is in the first position A. As a result, a structure can be realized in which the seat back 30 can be tilted forward further. The extension 22 can also be disposed at an appropriate position between the first position A and the second position B. This allows the position of the extension 22 to be adjusted according to the riding comfort of the passenger.

[0033] (Slide structure 50) 4(A) and 4(B) are schematic diagrams showing the sliding structure 50 of the extension 22. As shown in FIG.

[0034] The slide structure 50 has a fixed slider 51 and a movable slider 52 . FIG. 4A is a schematic diagram showing the movable slider 52 in the rearmost position (first position) within its movable range. FIG. 4B is a schematic diagram showing the movable slider 52 in the forwardmost position (second position) within its movable range.

[0035] The fixed slider 51 is fixed to the seat cushion frame 29, which is a framework member of the seat cushion 20, with screws or the like. The movable slider 52 is slidable relative to the fixed slider 51. A pad or the like constituting the extension 22 is held by the movable slider 52. The extension 22 is slidable together with the movable slider 52 in the approximately forward and backward direction.

[0036] In the first position shown in FIG. 4(A), the movable slider 52 is biased forward by the elastic restoring force of the spring 53, and is locked so as not to move forward by a slide lock mechanism 62 (not shown) (see FIG. 1, etc.). From this state, when the occupant operates the lever 54 to release the lock by the slide lock mechanism 62, the movable slider 52 moves forward due to the elastic restoring force of the spring 53. When the hand is released from the lever 54, the lever 54 returns to its original position, and the lock by the slide lock mechanism 62 is activated.

[0037] Although the above describes an example in which the extension 22 is moved by the elastic force of the spring 53, the method for automatically moving the extension 22 is not limited to this. For example, the extension 22 may be automatically moved by an actuator.

[0038] (About linkage) The extension 22 is configured to move to the second position B when an operation is performed to tilt the seat back 30 forward. Specifically, the vehicle seat 10 is configured such that when an operation is performed to release the lock by the seatback lock mechanism 61, the lock by the slide lock mechanism 62 of the extension 22 is also released. As a result, when an operation is performed to operate the unlocking operation portion of the seatback lock mechanism 61, which is an operation to tilt the seatback 30 forward, the slide lock mechanism 62 of the extension 22 is also released, and the extension 22 moves to the second position B due to the elastic restoring force of the spring 53.

[0039] An example of a structure for realizing such a configuration will be described below.

[0040] 1, the seatback locking mechanism 61 and the slide locking mechanism 62 are connected to each other by a cable 64 serving as an operation force transmission unit provided in the vehicle seat 10. By operating an unlocking operation unit of the seatback locking mechanism 61, the operation force is transmitted to the slide locking mechanism 62 as tension of the cable 64, and the lock by the slide locking mechanism 62 is released.

[0041] As shown in FIG. 1, the vehicle seat 10 further includes a remote control unit 63. The remote control unit 63 is connected to the seat back lock mechanism 61 and the slide lock mechanism 62 by a cable 64. By operating the remote control unit 63, it is possible to release the seat back lock mechanism 61 and the slide lock mechanism 62. The remote control unit 63 is, for example, a button or a lever provided in the luggage compartment 90.

[0042] Although the above describes an example in which the operating force is transmitted by utilizing the tension of the cable 64, the method for realizing the above configuration is not limited to this. For example, the seat back lock mechanism 61 and the slide lock mechanism 62 may be connected to the remote control unit 63 by electrical wiring (such as a harness), which allows the occupant to unlock each of the lock mechanisms 61, 62. Also, the lock mechanisms 61, 62 may be linked together by wireless communication.

[0043] <Action and effect> Next, the effects of this embodiment will be described.

[0044] In this embodiment, as shown in FIG. 1, a vehicle seat 10 includes a first support portion 12 that supports the buttocks and thighs of an occupant, a seat back 30 that supports the back of the occupant, and a second support portion 14 that has a headrest 40 that supports the head of the occupant.

[0045] However, the riding comfort of passengers may be adversely affected by factors such as the shape of the vehicle floor. Therefore, in this embodiment, the first support portion 12 has a seat cushion main body 21 that supports at least the buttocks of the occupant, and a movable support portion 22 that supports the thighs of the occupant and is movable relative to the seat cushion main body 21. Therefore, the thighs of the occupant can be appropriately supported by moving the movable support portion 22. As a result, the riding comfort of the occupant is improved.

[0046] Incidentally, when attempting to tilt the seat back 30 forward to a substantially horizontal position, the headrest 40 may interfere with the first support portion 12, making it impossible to achieve the substantially horizontal position. Therefore, in this embodiment, the movable support part 22 is movable between a first position A and a second position B. Then, as shown in Fig. 2, when the movable support part 22 is in the second position B, an accommodation space 12S is formed between the movable support part 22 and the seat cushion main body 21. As shown in Fig. 3, the accommodation space 12S is a space in which at least a part of the headrest 40 is accommodated when the seat back 30 is tilted forward. Therefore, it is possible to tilt the seat back 30 forward to a substantially horizontal position without the need to remove the head rest 40.

[0047] In this embodiment, as shown in Figs. 1 to 3, the movable support portion 22 is an extension 22 that supports the thighs of the occupant and is capable of extending the length of the seat surface. Therefore, the length of the seat surface can be adjusted to improve the riding comfort, and the space formed between the extension 22 and the seat cushion main body 21 can be used as the accommodation space 12S.

[0048] 5, the movable support portion may be an ottoman 70 that supports the lower legs of the occupant and is movable relative to the seat cushion main body 21. The ottoman 70 is movable so as to rotate relative to the seat cushion main body 21, for example. Therefore, the riding comfort can be improved by supporting the lower legs on the ottoman 70, and the space formed between the ottoman 70 and the seat cushion main body 21 can be used as the accommodation space 12S. In the modified example shown in FIG. 5, the first support portion 12 includes a seat cushion 20 and an ottoman 70. The seat cushion 20 does not include an extension and is composed only of a seat cushion main body 21. The ottoman 70(A) shown by the dashed line in FIG. 5(A) shows the ottoman 70 in the first position. In the first position A, the ottoman 70 is stored. The ottoman 70(B) shown in FIG. 5(B) shows the ottoman 70 in the second position. In this state, an accommodation space 12S is formed between the ottoman 70 and the seat cushion main body 21. Moreover, the ottoman 70 can also be disposed at a third position C (see FIG. 5(A)), which is an appropriate position between the first position A and the second position B. This allows the position of the ottoman 70 to be adjusted according to the riding comfort of the occupant.

[0049] In this embodiment, the movable support portion 22 is configured to move to the second position B when an operation is performed to tilt the seat back 30 forward. For this reason, there is no need to perform a separate operation to move the movable support portion 22 to the second position B. Therefore, the seat back 30 can be tilted forward with an even simpler operation.

[0050] In this embodiment, the vehicle seat 10 is installed in an electric vehicle that has a battery under the floor. Electric vehicles with batteries under the floor tend to have high passenger compartment floors, which can lead to a higher rear seat angle and poor ride comfort. Therefore, the vehicle seat 10 having the extension 22 as in this embodiment is particularly suitable.

[0051] In this embodiment, as shown in FIG. 3, when the seat back 30 is folded forward, an object can also be placed on the upper side of the extension 22 which is in the second position B. This increases the capacity of the luggage compartment.

[0052] Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and it is of course possible to implement the present invention in various other modified forms without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0053] 10 Vehicle seats 12 First support part 12S Storage Space 14 Second support part 20 Seat Cushion 21 Seat cushion body 22 Extension (movable support part) 30 Seat back 40 Headrest 63 Operation section 63 Remote Control Unit 64 Cable 70 Ottoman 90 Luggage compartment 2005 Patent A first position A Standing posture B Second position C third position FR Arrow

Claims

1. A first support portion that supports the buttocks and thighs of an occupant; a second support portion having a seat back for supporting a back of an occupant and a headrest for supporting a head of the occupant; Equipped with The first support portion is a seat cushion main body that supports at least the buttocks of an occupant; a movable support portion that supports a thigh or a lower leg of an occupant and is movable between a first position and a second position with respect to the seat cushion main body; having When the movable support portion is in the second position, an accommodation space is formed between the movable support portion and the seat cushion main body, in which at least a portion of the headrest is accommodated when the seat back is tilted forward. Vehicle seat.

2. The movable support portion is an extension that supports the thighs of an occupant and can extend the length of the seat surface. The vehicle seat according to claim 1 .

3. The movable support portion is an ottoman that supports the lower legs of an occupant and is movable relative to the seat cushion main body. The vehicle seat according to claim 1 .

4. The movable support portion is configured to move to the second position when an operation is performed to tilt the seat back forward. The vehicle seat according to claim 1 .

Images