Vehicle seats

Abstract

To provide a technique which is effective for inhibiting an interference part of a seat pad incorporated into a seat back from being displaced to the vehicle rear by an external load in a vehicle seat which is disposed in front of another rear seat as a vehicle rear seat.SOLUTION: A rear seat 1 is disposed in front of another rear seat as a vehicle rear seat and includes: a seat back 20 serving as a backrest of an occupant; a cover 30 for covering a seat belt 2, which is pulled out from a shoulder 20a of the seat back 20 to the outside of the seat, in the seat back 20; a seat pad 40 incorporated into the seat back 20 and having an interference part 41 which interferes with an upper part of the cover 30; and a seat pad restriction part 50 for restricting the interference part 41 of the seat pad 40 from moving to the vehicle rear along the cover 30 when an external load is input to an upper part of the seat back 20.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] Patent Document 1 below discloses this type of vehicle seat. This vehicle seat is configured so that a seat belt called a webbing is pulled out from the shoulder portion of the seat back to the outside of the seat. The seat back of this vehicle seat is provided with a cover that covers the seat belt inside the seat back, and an interference portion that is part of the seat pad interferes with the upper part of this cover. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-64715 Summary of the Invention [Problem to be solved by the invention]

[0004] According to the above-described vehicle seat, for example, when an occupant places their hands on the upper part of the seat back and presses the upper part of the seat back downward when getting in or out of the vehicle, the cover supports the interfering portion of the seat pad from below. Therefore, the cover can prevent the interfering portion of the seat pad from collapsing downward. On the other hand, if an external load toward the rear of the vehicle is applied to the interfering portion of the seat pad, the interfering portion may be displaced toward the rear of the vehicle relative to the cover. This misalignment can cause instability in the ingress / egress motion when an occupant places their hands on the upper part of the seat back. In particular, in a rear seat that is located in front of another rear seat, the occupant of the other rear seat may grasp the upper part of the seat back of the rear seat from behind, which can easily generate an external load toward the rear of the vehicle, making the above-described misalignment of the interfering portion of the seat pad more pronounced.

[0005] The present invention has been made in consideration of such problems, and aims to provide a technology that is effective in preventing an interference portion of a seat pad built into a seat back from shifting toward the rear of the vehicle due to an external load in a vehicle seat that is placed in front of another rear seat as a rear seat of the vehicle. [Means for solving the problem]

[0006] One aspect of the present invention is A vehicle seat that is disposed in front of another rear seat as a rear seat of a vehicle, A seat back for the occupant to rest against, a cover that covers, inside the seat back, a seat belt that is pulled out from a shoulder portion of the seat back to the outside of the seat; a seat pad that is built into the seat back and has an interference portion that interferes with an upper portion of the cover; a seat pad restricting portion that restricts the interference portion of the seat pad from moving rearward along the cover when an external load is applied to an upper portion of the seat back; Equipped with picture, the cover has a vertical wall extending in the up-down direction, a lower wall extending from a lower end of the vertical wall toward the front of the vehicle, and an upper wall extending from an upper end of the vertical wall toward the rear of the vehicle, The seat pad regulating portion is configured by a step structure formed by the vertical wall, the lower wall, and the upper wall of the cover. Vehicle seats, is located. [Effects of the Invention]

[0007] The vehicle seat of the above-described aspect is a rear seat disposed in front of another rear seat. This vehicle seat includes a seat back, a cover, a seat pad, and a seat pad restricting portion. The cover covers the seat belt inside the seat back. The seat pad has an interference portion that interferes with the upper portion of the cover. Therefore, when the upper portion of the seat back is pressed downward, the cover supports the interference portion of the seat pad from below, and the cover can prevent the interference portion from falling downward.

[0008] When an external load is applied to the upper part of the seat back toward the rear of the vehicle, the interfering portion of the seat pad, which is supported from below by the cover, may move toward the rear of the vehicle along the cover. Therefore, the seat pad restricting portion functions to restrict the interfering portion of the seat pad from moving toward the rear of the vehicle along the cover when an external load is applied to the upper part of the seat back. By restricting the movement of the interfering portion of the seat pad toward the rear of the vehicle, this seat pad restricting portion can prevent the interfering portion of the seat pad from shifting toward the rear of the vehicle relative to the cover.

[0009] As described above, according to the above-described aspect, in a vehicle seat that is positioned in front of another rear seat as a rear seat of a vehicle, it is possible to prevent the interference portion of the seat pad built into the seat back from shifting toward the rear of the vehicle due to an external load. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view showing the interior of a vehicle according to a first embodiment. [Figure 2] 1 is a perspective view of an upper portion of a rear seat according to the first embodiment, seen from diagonally above and in front. [Figure 3] 3 is a perspective view of a cover and a bezel provided on the rear seat of the first embodiment. FIG. [Figure 4] 4 is a cross-sectional view taken along line IV-IV in FIG. 3. [Figure 5] 5 is a cross-sectional view showing a state in which an external load directed toward the rear of the vehicle is input to the upper part of the seat back in FIG. 4 by the fingers of an occupant. FIG. [Figure 6] 5 is a cross-sectional view of a rear seat according to a second embodiment, corresponding to FIG. 4. [Figure 7] FIG. 5 is a cross-sectional view of a rear seat according to a reference embodiment, corresponding to FIG. 4; DETAILED DESCRIPTION OF THE INVENTION

[0011] In the vehicle seat of the above aspect, it is preferable that the cover is provided with a vertical wall extending along the up-down direction, and the seat pad restricting portion is formed by the vertical wall.

[0012] According to this vehicle seat, the vertical wall of the cover catches on the interfering portion of the seat pad, and the movement of the interfering portion of the seat pad toward the rear of the vehicle can be restricted by the vertical wall. In this case, the vertical wall can be used to construct the seat pad restricting portion, which is effective in simplifying the structure of the seat pad restricting portion.

[0013] In the vehicle seat of the above aspect, the cover includes the vertical wall and a lower end portion of the vertical wall. before a lower wall provided on the cover so as to extend toward the rear of the vehicle, and an upper wall provided on the cover so as to extend from an upper end of the vertical wall toward the rear of the vehicle, The seat pad restricting portion is preferably configured by a step structure formed by the vertical wall, the lower wall, and the upper wall of the cover.

[0014] According to this vehicle seat, the seat pad restricting portion can be constructed using a step structure consisting of the vertical wall, lower wall, and upper wall that are part of the cover. This has the advantage that no additional parts are required for the seat pad restricting portion apart from the cover. Furthermore, the step structure can be formed in the cover with a relatively simple process.

[0015] In the vehicle seat of the above aspect, the vertical wall is preferably provided immediately below a load input region of the interference portion of the seat pad where the external load is input by the fingers of the occupant.

[0016] With this vehicle seat, a portion of the external load input to the load input area by the occupant's fingers can be used to press the interference portion of the seat pad toward the front of the vehicle with respect to the vertical wall, thereby enhancing the effect of restricting the movement of the interference portion of the seat pad toward the rear of the vehicle.

[0017] In the vehicle seat of the above aspect, it is preferable that the seat back is rotatably connected to the seat cushion, and the vertical wall is provided on the cover so as to extend along the extension direction of the seat back.

[0018] With this vehicle seat, regardless of the rotational position of the seat back relative to the seat cushion, a vertical wall provided on the cover that extends along the extension direction of the seat back catches on the interfering portion of the seat pad, thereby restricting the movement of the interfering portion of the seat pad toward the rear of the vehicle.

[0019] Hereinafter, an embodiment of the vehicle seat according to the above aspect will be specifically described with reference to the drawings.

[0020] In the drawings referred to in the following description, the front of the vehicle is indicated by an arrow FR, the upper side of the vehicle is indicated by an arrow UP, and the inside of the vehicle is indicated by an arrow IN. Furthermore, unless otherwise specified, the up-down direction (vehicle height direction) of the vehicle seat when the seatback is in the upright position is indicated by an arrow X, the front-rear direction (vehicle length direction) of the vehicle seat is indicated by an arrow Y, and the left-right direction (vehicle width direction) of the vehicle seat is indicated by an arrow Z.

[0021] (Embodiment 1) As shown in FIG. 1, a vehicle V according to the first embodiment is a vehicle equipped with one row of front seats 1A and two rows of rear seats 1, 1B. This vehicle V is generally referred to as a "minivan." The front seats 1A are vehicle seats arranged in the front region of the vehicle interior. The rear seats 1 are vehicle seats in the first row of rear seats arranged in front of another rear seat 1B in the rear region of the vehicle interior. This rear seat 1 is what is called a "captain seat." In contrast, the other rear seat 1B is a vehicle seat in the second row of rear seats arranged behind the rear seat 1 in the rear region of the vehicle interior. This other rear seat 1B is a seat for three people, and is what is called a "bench seat."

[0022] The arrangement of vehicle seats in vehicle V is merely illustrative and is not limited to that shown in FIG. 1. For example, there may be three or more rows of rear seats. The structure and shape of each vehicle seat can be modified as appropriate from that shown in FIG. 1. Vehicle V is not limited to a minivan, as long as the vehicle has multiple rows of rear seats in the passenger compartment.

[0023] 1. Rear seat 1 structure As shown in Fig. 1, the rear seat 1 includes a seat cushion 10 having a seating surface, a seat back 20 that stands upright from the seat cushion 10 and serves as a back rest for the occupant, and a headrest 11 that is disposed on the upper part of the seat back 20. The seat back 20 is connected to the seat cushion 10 so as to be rotatable about its lower end. If necessary, the rear seat 1 may have a structure in which the seat back 20 is non-rotatably connected to the seat cushion 10.

[0024] The rear seat 1 for the left seat has a bilaterally symmetrical structure to the rear seat 1 for the right seat, so only the structure of the rear seat 1 for the right seat will be described below.

[0025] 2 shows a rear seat 1 for a right seat with a seat back 20 in an upright position P. This rear seat 1 is configured so that a seat belt 2 is pulled out from a shoulder portion 20a on the right side of the seat back 20 to the outside of the seat. A bezel 23 is disposed on the front side of the seat back 20, and an opening 23a of this bezel 23 is exposed.

[0026] The seat belt 2 is a flexible belt-shaped member also called webbing, and is constantly biased in the winding direction by a belt winding device (not shown) built into the rear seat 1. Therefore, when the seat belt 2 receives a load from the occupant in the unwinding direction that overcomes the biasing force in the winding direction, the seat belt 2 is pulled out to the outside of the seat through the opening 23a of the bezel 23. On the other hand, when the seat belt 2 is released from the unwinding operation by the occupant, it is pulled back in accordance with the biasing force in the winding direction.

[0027] As shown in Fig. 3, the cover 30 of the rear seat 1 has the function of covering the seat belt 2 inside the seat back 20. This cover 30 is attached integrally to the bezel 23. This cover 30 has an opening 30a for withdrawing the seat belt 2, and this opening 30a is configured to overlap with the opening 23a of the bezel 23. Therefore, the seat belt 2 passes through the opening 30a of the cover 30, and then passes through the opening 23a of the bezel 23 to be withdrawn to the outside of the seat.

[0028] 2. Internal structure of seat back 20 As shown in FIG. 4, the seat back 20 of the rear seat 1 generally incorporates a seat back frame 21, a belt guide 22, a cover 30, and a seat pad 40.

[0029] The seatback frame 21 forms the framework of the seatback 20. The belt guide 22 is fixed to the seatback frame 21 and has a guide space 22a that guides the seatbelt 2. The seatbelt 2 guided in the guide space 22a of the belt guide 22 is covered from above by the upper part, which is the top surface of the cover 30.

[0030] The seat pad 40 is made of a cushioning material that is softer than the cover 30. The surface of the seat pad 40 is covered with a skin layer 24. The seat pad 40 has an interference portion 41 that interferes with the upper part of the cover 30. In this embodiment, the seat pad 40 is not fixed to the cover 30 by a fixing means such as fastening or adhesion. Therefore, the seat pad 40 is allowed to move in a direction along the cover 30.

[0031] The cover 30 is fixed to the seat back frame 21. The cover 30 has an upper portion including a vertical wall 31 extending in the up-down direction X, and a lower end 31a of the vertical wall 31 extending from the lower end 31a of the vertical wall 31 to the vehicle seat. before The cover 30 has a lower wall 32 extending toward the front and rear of the vehicle, and an upper wall 33 extending from an upper end 31b of the vertical wall 31 toward the rear of the vehicle. The cover 30 has a stepped structure made up of the vertical wall 31, the lower wall 32, and the upper wall 33, all of which extend along the front-rear direction Y.

[0032] The vertical wall 31, the lower wall 32, and the upper wall 33 of the cover 30 are all plate-like portions with a generally constant thickness, with the left-right direction Z as the plate width direction. Therefore, even though the upper part of the cover 30 has a stepped structure, the increase in cost and weight is kept to a minimum compared to when the upper part has a flat plate structure.

[0033] The upper part of the cover 30 interferes with the interference portion 41 of the seat pad 40. Therefore, when the upper part of the seat back 20 is pressed downward, the upper part of the cover 30 supports the interference portion 41 of the seat pad 40 from below. Therefore, the cover 30 can prevent the interference portion 41 of the seat pad 40 from dropping downward.

[0034] In the cover 30, the vertical wall 31 is provided directly below a load input region 42 of the interference portion 41 of the seat pad 40. The load input region 42 is defined as a region into which an external load is input when an occupant presses or grips and pulls the upper portion of the seat back 20 with their fingers. Here, when the misalignment direction in which the interference portion 41 of the seat pad 40 is misaligned with respect to the cover 30 due to the external load is indicated by arrow D, the vertical wall 31 extending along the up-down direction X extends so as to intersect with the misalignment direction D. In this case, the misalignment direction D is a direction generally parallel to the extension plane of the upper wall 33 of the cover 30. Furthermore, the vertical wall 31 of the cover 30 extends along the extension direction C of the seat back 20.

[0035] 4 only shows the interior of the seat back 20 when it is in an arbitrary upright position P. In the cover 30 shown in FIG. 4, the vertical wall 31 extends at an incline relative to the up-down direction X, and the lower wall 32 and upper wall 33 both extend at an incline relative to the front-rear direction Y. Meanwhile, the inclination angle of each wall of the cover 30 changes depending on the position of the seat back 20. Therefore, depending on the position of the seat back 20, the cover 30 may be positioned so that the vertical wall 31 extends in the up-down direction X and the lower wall 32 and upper wall 33 both extend in the front-rear direction Y.

[0036] In this embodiment, the step structure of the cover 30 functions as a seat pad restricting portion 50 that restricts the interference portion 41 of the seat pad 40 from moving toward the rear of the vehicle along the cover 30. The function of the seat pad restricting portion 50 at this time will become clearer from the following explanation with reference to FIG. 5.

[0037] 3. Function of the seat pad restricting portion 50 As shown in Fig. 5, it is assumed that, for example, an occupant of rear seat 1B (see Fig. 1) places his / her fingers H on the upper part of seat back 20 of rear seat 1 when getting in or out of the vehicle. At this time, an external load F directed toward the rear of the vehicle is input from the occupant's fingers H to a load input region 42 of interference portion 41 of seat pad 40 of rear seat 1. Then, interference portion 41 of seat pad 40 tries to move in positional displacement direction D toward the rear of the vehicle along cover 30 in response to external load F. Therefore, in this embodiment, a seat pad restricting portion 50 (step structure of cover 30) is provided to restrict movement of interference portion 41 in positional displacement direction D at this time.

[0038] The cover 30 has a vertical wall 31 extending intersecting the up-down direction X, and this vertical wall 31 forms a stepped structure of the cover 30. Therefore, when the interference portion 41 of the seat pad 40 moves rearward of the vehicle, it is hooked onto the vertical wall 31 of the cover 30, thereby restricting movement in the positional deviation direction D. In particular, by providing the vertical wall 31 of the cover 30 directly below the load input region 42, the downward load of the external load F input from the occupant's fingers H can be used to strengthen the hooking force of the interference portion 41 on the vertical wall 31 of the cover 30. In other words, the downward load can be used to press the load input region 42 of the seat pad 40 into the front region of the vertical wall 31 of the cover 30. The deeper the load input region 42 of the seat pad 40 is pressed into the front region of the vertical wall 31 of the cover 30, the stronger the hooking force of the interference portion 41 on the vertical wall 31, making it more difficult for the interference portion 41 of the seat pad 40 to move in the positional deviation direction D.

[0039] Next, the effects of the above-described first embodiment will be described.

[0040] In the rear seat 1 of the first embodiment, when an external load F toward the rear of the vehicle is input to the upper part of the seat back 20, the interference portion 41 of the seat pad 40, which is supported from below by the cover 30, may slide toward the rear of the vehicle along the cover 30. Therefore, the seat pad restricting portion 50 of this embodiment functions to restrict the interference portion 41 of the seat pad 40 from moving toward the rear of the vehicle along the cover 30 when the external load F is input to the upper part of the seat back 20.

[0041] Such a function of the seat pad restricting portion 50 restricts the movement of the interfering portion 41 of the seat pad 40 toward the rear of the vehicle, thereby suppressing the occurrence of rearward displacement of the interfering portion 41 of the seat pad 40 relative to the cover 30. As a result, the ingress / egress action of the occupant when placing their hands on the upper part of the seat back 20 to get in and out of the vehicle can be stabilized.

[0042] As described above, according to embodiment 1, in a rear seat 1 that is positioned in front of another rear seat 1B as a rear seat of a vehicle V, it is possible to prevent the interference portion 41 of the seat pad 40 built into the seat back 20 from shifting toward the rear of the vehicle due to an external load F.

[0043] According to the rear seat 1 of the first embodiment, the vertical wall 31 provided on the cover 30 is caught on the interference portion 41 of the seat pad 40, and therefore the movement of the interference portion 41 of the seat pad 40 toward the rear of the vehicle can be restricted by this vertical wall 31. In this case, the seat pad restricting portion 50 can be constructed using the vertical wall 31, which is effective in simplifying the structure of the seat pad restricting portion 50.

[0044] According to the rear seat 1 of the first embodiment, the seat pad restricting portion 50 can be constructed by utilizing the step structure made up of the vertical wall 31, the lower wall 32, and the upper wall 33, which are part of the cover 30. This has the advantage that no additional parts are required for the seat pad restricting portion 50 apart from the cover 30. In addition, the step structure can be formed in the cover 30 by a relatively simple process.

[0045] According to the rear seat 1 of the first embodiment, part of the external load F input to the load input area 42 by the occupant's fingers H can be used as a load that presses the interference portion 41 of the seat pad 40 toward the vehicle front side of the vertical wall 31. This can enhance the effect of restricting the movement of the interference portion 41 of the seat pad 40 toward the vehicle rear.

[0046] According to the rear seat 1 of embodiment 1, regardless of the rotational position of the seat back 20 relative to the seat cushion 10, the vertical wall 31 provided on the cover 30 so as to extend along the extension direction C of the seat back 20 catches on the interference portion 41 of the seat pad 40, and therefore, the movement of the interference portion 41 of the seat pad 40 toward the rear of the vehicle can be restricted by this vertical wall 31.

[0047] 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 the above-described embodiment 1 are denoted by the same reference numerals, and the description of the same elements will be omitted.

[0048] (Embodiment 2) In a rear seat 101 of the second embodiment shown in FIG. 6, the structure of a cover 130 built into a seat back 20 differs from that of the cover 30 of the rear seat 1 of the first embodiment.

[0049] The cover 130 of the second embodiment has a convex portion 131 that protrudes toward the interference portion 41 of the seat pad 40. This convex portion 131 is a plate-like portion whose plate thickness is generally uniform at each location. Similar to the step structure of the cover 30 of the first embodiment, this convex portion 131 constitutes a seat pad restricting portion 50 that restricts the interference portion 41 of the seat pad 40 from moving toward the rear of the vehicle along the cover 30. In particular, the vertical wall 132 of this convex portion 131 has the same shape as the vertical wall 31 of the cover 30 of the first embodiment, and performs the same function as the vertical wall 31.

[0050] The other configurations are the same as those in the first embodiment.

[0051] According to the rear seat 101 of the second embodiment, the size of the interference portion 41 of the seat pad 40 can be increased compared to when a stepped structure like the cover 30 of the first embodiment is adopted.

[0052] In addition, the same effects as those of the first embodiment are achieved.

[0053] ( Reference form ) As shown in Figure 7 Reference form In the rear seat 201 of the present embodiment, the peripheral structure of the cover 230 built into the seat back 20 is different from that of the cover 30 of the rear seat 1 of the first embodiment.

[0054] Reference form A plate member 231, which is separate from the cover 230, is joined to the upper surface of the cover 230. The plate member 231 has a vertical wall 232 that protrudes toward the interference portion 41 of the seat pad 40, with the left-right direction Z as its width direction. The vertical wall 232 of the plate member 231 is not formed by processing the cover 230 itself, but is attached to the cover 230 afterwards. Similar to the step structure of the cover 30 of the first embodiment, the plate member 231 constitutes a seat pad restricting portion 50 that restricts the interference portion 41 of the seat pad 40 from moving along the cover 30 toward the rear of the vehicle. In particular, the vertical wall 232 of the plate member 231 has the same shape as the vertical wall 31 of the cover 30 of the first embodiment, and performs the same function as the vertical wall 31.

[0055] The other configurations are the same as those in the first embodiment.

[0056] Reference form According to the rear seat 201, the vertical wall 232 is not formed by processing the cover 230 itself, which prevents the processing of the cover 230 from becoming complicated. Also, compared to when a stepped structure like the cover 30 of the first embodiment is adopted, the size of the interference portion 41 of the seat pad 40 can be increased.

[0057] In addition, the same effects as those of the first embodiment are achieved.

[0058] The present invention is not limited to the exemplary embodiments 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 implemented by applying the above embodiments.

[0059] In the above-described embodiment, the case where the number of vertical walls 31, 132, 232 provided on the covers 30, 130, 230 is one is exemplified, but instead, a structure in which a plurality of vertical walls 31, 132, 232 are arranged at intervals in the positional deviation direction D can also be adopted.

[0060] In the above-described embodiment, an example is given of the case where the vertical walls 31, 132, 232 are positioned directly below the load input area 42 of the interference portion 41 of the seat pad 40, but the positioning positions of the vertical walls 31, 132, 232 are not limited to this, and the vertical walls 31, 132, 232 can be positioned in any appropriate position as needed. [Explanation of symbols]

[0061] 1,101,201 Rear seats (vehicle seats) 1B Another rear seat 2 Seatbelts 10 seat cushions 20 Seatback 20a Shoulder 30,130,230 Cover 31,132,232 Vertical wall (seat pad regulation part) 31a Lower end 31b Upper end 32 Lower wall 33 Upper Wall 40 seat pad 41 Interference part 42 Load Input Area 50 Seat pad regulation part C Seat back extension direction F External load H Occupant's fingers V vehicle X vertical direction

Claims

1. A vehicle seat that is disposed in front of another rear seat as a rear seat of a vehicle, A seat back for the occupant to rest against, a cover that covers, inside the seat back, a seat belt that is pulled out from a shoulder portion of the seat back to the outside of the seat; a seat pad that is built into the seat back and has an interference portion that interferes with an upper portion of the cover; a seat pad restricting portion that restricts the interference portion of the seat pad from moving rearward along the cover when an external load is applied to an upper portion of the seat back; Equipped with the cover has a vertical wall extending in the up-down direction, a lower wall extending from a lower end of the vertical wall toward the front of the vehicle, and an upper wall extending from an upper end of the vertical wall toward the rear of the vehicle, The seat pad restricting portion is configured by a step structure formed by the vertical wall, the lower wall, and the upper wall of the cover.

2. 2. The vehicle seat according to claim 1, wherein the vertical wall is provided immediately below a load input region of the interference portion of the seat pad to which the external load is input by the fingers of an occupant.

3. The seat back is rotatably connected to the seat cushion, 3. The vehicle seat according to claim 1, wherein the vertical wall is provided on the cover so as to extend along an extension direction of the seat back.

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