JP2019202720A - Vehicular seat - Google Patents

Abstract

To provide a vehicular seat capable of displacing a seat back while suppressing lowering of designability and entry of a foreign matter.SOLUTION: A vehicular seat includes a seat back and a back frame constituting a skeleton of the seat back. The seat back has a displacement part displaceable to the back frame, and a fixing part fixed to the back frame. The fixing part is arranged outside in a seat width direction of the back frame and the displacement part, and has two side parts extending in a vertical direction, an upper part that is arranged above the back frame and the displacement part and extends in the seat width direction, and a plate-like shield part that is arranged in the front of the back frame and extends to the rear part of the displacement part from the two side parts or upper part. The shield part is arranged at a position that always overlaps the displaced displacement part when viewed from the front of the seat.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to a vehicle seat.

  In a seat disposed on a vehicle such as an automobile, a seat in which a seat cushion and a seat back are displaceable with respect to a frame fixed to the automobile is known in accordance with the posture of a seated person (see Patent Document 1).

  The seat is configured such that a part of the seat back swings about an axis extending in the longitudinal direction of the seat.

International Publication No. 2013/021497

  In the seat, in addition to a displacement portion that can be displaced with respect to the seat back, a fixing portion that is not displaced with respect to the back frame is provided on the seat back in order to cover a structure such as the back frame.

  However, when the displacement portion is displaced, the relative positional relationship between the displacement portion and the fixed portion changes, and a gap is generated between the displacement portion and the fixed portion. Since the structure which does not have designability, such as a back frame, can be visually recognized from this clearance gap, there exists a possibility that the designability of a sheet | seat may fall. Moreover, there is a possibility that foreign matter enters from the gap.

  An object of one aspect of the present disclosure is to provide a vehicle seat capable of displacing a seat back while suppressing deterioration in design properties and entry of foreign matter.

  One aspect of the present disclosure is a vehicle seat (1) including a seat cushion (2), a seat back (3), and a back frame (5) constituting a skeleton of the seat back (3). The seat back (3) has a displacement part (31) that can be displaced with respect to the back frame (5), and a fixed part (32) fixed to the back frame (5).

  The fixing portion (32) is disposed on the outer side in the seat width direction of the back frame (5) and the displacement portion (31), and extends in the up-down direction. The side portion (32A, 32B) and the back frame (5) And an upper part (32C) extending in the seat width direction and disposed in front of the back frame (5) and two side parts (32A, 32B) or an upper part (32C). ) To at least one plate-like shield part (32D, 32E) extending from the displacement part (31) to the rear. At least one shield part (32D, 32E) is arrange | positioned in the position which overlaps with the displacement part (31) to which it displaces seeing from the front of a sheet | seat.

  According to such a configuration, when the displacement portion (31) is displaced with respect to the fixed portion (32), the structure inside the seat back (3) is hidden by the shield portions (32D, 32E). Can be avoided. Moreover, the entrance of foreign matter between the displacement portion (31) and the fixed portion (32) can be suppressed by the shield portions (32D, 32E).

  In one aspect of the present disclosure, the at least one shield portion (32D, 32E) is parallel to the rear surface (31A) behind the seat of the displacement portion (31) when the displacement portion (31) is in an initial position where the displacement portion (31) is not displaced. It may be stretched. According to such a configuration, since the distance in the front-rear direction of the seat between the displacement portion (31) and the fixed portion (32) can be reduced, it is possible to more reliably suppress the deterioration in design and the entry of foreign matter.

  In one aspect of the present disclosure, the at least one shield portion (32D, 32E) may be curved toward the rear of the seat as the distance from the two side portions (32A, 32B) or the upper portion (32C) increases. According to such a configuration, the visibility of the structure inside the seat back (3) between the displacement portion (31) and the fixed portion (32) is further reduced by the curved shield portions (32D, 32E). Can do.

  Note that the reference numerals in the parentheses above are examples showing the correspondence with the specific configurations described in the embodiments described later, and the present disclosure is limited to the specific configurations shown in the reference numerals in the parentheses. It is not something.

1A is a schematic perspective view showing a vehicle seat in the embodiment, and FIG. 1B is a schematic perspective view showing a state in which a part of a seat cushion and a seat back are displaced in the vehicle seat of FIG. 1A. It is. FIG. 2 is a schematic perspective view of a cushion frame and a back frame in the vehicle seat of FIG. 1A. 3A is a schematic end view of the cut section taken along line IIIA-IIIA in FIG. 1A, and FIG. 3B is a schematic end view of the cut section taken along line IIIB-IIIB in FIG. 1B.

Hereinafter, embodiments to which the present disclosure is applied will be described with reference to the drawings.
[1. First Embodiment]
[1-1. Constitution]
A vehicle seat 1 shown in FIGS. 1A and 1B includes a seat cushion 2 and a seat back 3.

  The vehicle seat 1 of this embodiment is used as a seat for a passenger car. In addition, the direction in the following description and each figure means the direction in the state which assembled | attached the vehicle seat 1 to the vehicle (namely, passenger car). In the present embodiment, the seat width direction matches the left-right direction of the vehicle, and the front of the seat matches the front of the vehicle.

  As shown in FIG. 2, the vehicle seat 1 includes a cushion frame 4 constituting the skeleton of the seat cushion 2, a back frame 5 constituting the skeleton of the seat back 3, a movable pan 6, and a movable frame 7. .

<Seat cushion>
The seat cushion 2 is a part for supporting a seated person's buttocks and the like. As shown in FIGS. 1A and 1B, the seat cushion 2 includes a seat cushion displacement portion 2 </ b> A that can be displaced with respect to the cushion frame 4.

The seat cushion displacement portion 2A includes a seating surface of the seated person. Further, the seat cushion displacement portion 2A swings about an axis P1 intersecting with the seating surface. The seat cushion displacement portion 2 </ b> A is fixed to a movable pan 6 (see FIG. 2) supported so as to be displaceable with respect to the cushion frame 4.

  The movable pan 6 is provided with a support portion that supports the movable pan 6 so as to be displaceable with respect to the cushion frame 4, a spring that applies an initial load to the movable pan 6, and the like. Accordingly, the seat cushion displacement portion 2A is configured to swing when a load exceeding a predetermined value exceeding the initial load is applied.

<Back frame>
As shown in FIG. 2, the back frame 5 includes a first side frame 51 and a second side frame 52 that extend in the vertical direction and are spaced apart from each other in the seat width direction.

<Seatback>
The seat back 3 is a part for supporting the back of the seated person. As shown in FIGS. 1A and 1B, the seat back 3 includes a seat back displacement portion 31 that can be displaced with respect to the back frame 5, and a seat back fixing portion 32 that is fixed to the back frame 5.

(Seat back displacement part)
The seat back displacement portion 31 swings about an axis P2 that intersects the front of the seat back 3 (that is, the surface that supports the back of the seated person). The seat back displacement portion 31 is attached to a movable frame 7 (see FIG. 2) described later. Further, the seat back displacement portion 31 is not fixed to the back frame 5.

  The seat back displacement portion 31 is made of resin. Examples of the resin constituting the seat back displacement portion 31 include elastomers such as polyurethane and polyester elastomer, and resins having elasticity or flexibility such as beaded foamed polypropylene (EPP).

  The seat back displacement portion 31 may have a multilayer structure in which a plurality of material layers are combined. As this multilayer structure, for example, a structure in which a urethane layer is stretched on the surface of the elastomer layer on the seated side is exemplified. The seat back 3 may further include a cover that covers the seat back displacement portion 31. This cover is, for example, natural leather, synthetic leather, fabric or the like.

(Seat back fixing part)
As shown in FIGS. 1A and 1B, the seat back fixing portion 32 is disposed behind the seat back displacement portion 31, and on the left and right sides and below the seat back displacement portion 31. The seat back fixing portion 32 is made of, for example, resin, metal, or the like.

  The seat back fixing portion 32 has a frame portion 33 disposed on the left and right sides and the rear side of the seat back displacement portion 31. The frame portion 33 includes a plate-like first side portion 32A, a plate-like second side portion 32B, a plate-like upper portion 32C, a plate-like first shield portion 32D, and a plate-like second shield portion 32E. And a plate-like back portion 32F (see FIG. 3A).

  The first side portion 32A is disposed on the outer side (that is, the right side) in the seat width direction of the first side frame 51 and the seat back displacement portion 31 so as to face the first side frame 51. The first side portion 32A extends in the up-down direction.

  The second side portion 32B is disposed on the outer side (that is, the left side) in the seat width direction of the second side frame 52 and the seat back displacement portion 31 so as to face the second side frame 52. The second side portion 32B extends in the vertical direction.

  The upper portion 32C is disposed above the back frame 5 and the seat back displacement portion 31 so as to cover the back frame 5, and extends in the seat width direction. The upper part 32C connects the first side part 32A and the second side part 32B.

  As shown in FIG. 3A, the first shield part 32 </ b> D is disposed in front of the first side frame 51 and extends from the first side part 32 </ b> A to the rear of the seat back displacement part 31. The second shield part 32 </ b> E is disposed in front of the second side frame 52 and extends from the second side part 32 </ b> B to the rear of the seat back displacement part 31.

  The first shield part 32D and the second shield part 32E are arranged at positions that always overlap with the displaced seat back displacement part 31 when viewed from the front of the seat. That is, the end portions on the inner side in the seat width direction of the first shield portion 32D and the second shield portion 32E are not visually recognized from the front of the seat even when the seat back displacement portion 31 is displaced.

  For example, as shown in FIG. 3B, the second shield part 32E is located on the inner side of the seat back displacement part 31 from the left end (that is, the left side surface 31C) of the seat back displacement part 31 when the seat back displacement part 31 is maximum displaced to the right. (I.e. right side). Therefore, as viewed from the front of the seat, the entire locus of the left end of the seat back displacement portion 31 accompanying the displacement of the seat back displacement portion 31 overlaps the first shield portion 32D.

  The first shield part 32D is obtained by horizontally inverting the second shield part 32E. That is, the first shield part 32D is, like the second shield part 32E, the seat back displacement part rather than the right end (that is, the right side surface 31B) of the seat back displacement part 31 when the seat back displacement part 31 is maximum displaced to the left side. It extends to the inside of 31 (that is, the left side). The first shield part 32D and the second shield part 32E are separated from each other in the sheet width direction.

  As shown in FIG. 3A, the first shield part 32D and the second shield part 32E have a seat back in a region that overlaps the seat back displacement part 31 in the front-rear direction when the seat back displacement part 31 is in the initial position where it is not displaced. The displacement portion 31 extends in parallel with the back surface 31A behind the seat.

  That is, at the initial position of the seat back displacement portion 31, the distance between the first shield portion 32D and the second shield portion 32E and the seat back displacement portion 31 in the seat front-rear direction is constant along the seat width direction. Note that the distance in the front-rear direction of the seatback displacement portion 31 between the first shield portion 32D and the second shield portion 32E and the seatback displacement portion 31 is smaller than the thickness of the seatback displacement portion 31.

  Further, the first shield part 32D and the second shield part 32E are curved toward the back of the seat as they are separated from the first side part 32A and the second side part 32B, respectively. Specifically, the first shield part 32D and the second shield part 32E protrude rearward along the curvature of the back surface 31A of the seat back displacement part 31 from the end in the seat width direction toward the center. Is so curved.

  The first shield part 32D and the second shield part 32E of the present embodiment are provided at the connection part with the first side part 32A or the second side part 32B, and the convex part 32G protruding forward of the seat from the other part. Have each.

The convex portion 32G overlaps the right side surface 31B or the left side surface 31C of the seat back displacement portion 31 as viewed from the seat width direction. The convex portion 32G is provided only in a partial region in the vertical direction of the first shield portion 32D and the second shield portion 32E (in this embodiment, a region from the seat cushion 2 to a certain height). Note that the first shield part 32D and the second shield part 32E do not necessarily have the convex part 32G.

  The back portion 32F is disposed behind the back frame 5 and extends in the vertical direction and the seat width direction. The back portion 32F is connected to the first side portion 32A, the second side portion 32B, and the upper portion 32C.

<Movable frame>
As shown in FIG. 2, the movable frame 7 is a metal plate-like frame that can be displaced with respect to the back frame 5. The movable frame 7 is disposed between the seat back displacement portion 31 and the back frame 5.

  The movable frame 7 is attached with a movable mechanism 8 having a support portion that supports the movable frame 7 so as to be displaceable with respect to the back frame 5 and a spring that applies an initial load to the movable frame 7. Therefore, the seat back displacement portion 31 is configured to swing when a load exceeding a predetermined value exceeding the initial load is applied. The movable frame 7 is supported by the back frame 5 via the movable mechanism 8.

  The movable frame 7 has a plate surface facing the seat back displacement portion 31 fixed to the seat back displacement portion 31. Note that the movable frame 7 may be integrated with the seat back displacement portion 31.

  The movable frame 7 has a central portion 7A (see FIG. 2) that is separated from the seat back displacement portion 31 and protrudes rearward in a region between the first shield portion 32D and the second shield portion 32E. The central portion 7A is connected to the movable mechanism 8.

[1-2. effect]
According to the embodiment detailed above, the following effects can be obtained.
(1a) When the seat back displacement portion 31 is displaced with respect to the seat back fixing portion 32, the structure inside the seat back 3 is concealed by the shield portions 32D and 32E. Further, the entry of foreign matter between the seat back displacement portion 31 and the seat back fixing portion 32 can be suppressed by the shield portions 32D and 32E.

  (1b) Since the shield portions 32D and 32E extend in parallel with the back surface 31A behind the seat back of the seat back displacement portion 31, the distance between the seat back displacement portion 31 and the seat back fixing portion 32 in the seat front-rear direction can be reduced. it can. As a result, it is possible to more reliably suppress the deterioration of the design and the entry of foreign matter.

  (1c) The visibility of the structure inside the seat back 3 between the seat back displacement portion 31 and the seat back fixing portion 32 can be further reduced by the shield portions 32D and 32E that are curved toward the rear of the seat.

[2. Other Embodiments]
As mentioned above, although embodiment of this indication was described, it cannot be overemphasized that this indication can take various forms, without being limited to the above-mentioned embodiment.

  (2a) In the vehicle seat 1 of the above-described embodiment, the shield portions 32D and 32E do not necessarily have to extend parallel to the back surface 31A of the seat back displacement portion 31. Further, the shield portions 32D and 32E do not necessarily have to be curved.

  (2b) In the vehicle seat 1 of the above embodiment, the seat back fixing portion 32 is replaced with the first shield portion 32D and the second shield portion 32E in addition to the first shield portion 32D and the second shield portion 32E. The shield portion may extend from the upper portion 32C of the seat back fixing portion 32 downward to the rear of the seat back displacement portion 31.

  (2c) The vehicle seat 1 of the above-described embodiment can be applied to a sheet used for a vehicle such as a railway vehicle other than an automobile, a ship, and an aircraft other than the above-described sheet used for an automobile.

  (2d) The functions of one component in the above embodiment may be distributed as a plurality of components, or the functions of a plurality of components may be integrated into one component. Moreover, you may abbreviate | omit a part of structure of the said embodiment. In addition, at least a part of the configuration of the above embodiment may be added to or replaced with the configuration of the other embodiment. In addition, all the aspects included in the technical idea specified from the wording described in the claims are embodiments of the present disclosure.

DESCRIPTION OF SYMBOLS 1 ... Vehicle seat, 2 ... Seat cushion, 2A ... Seat cushion displacement part,
3 ... seat back, 4 ... cushion frame, 5 ... back frame, 6 ... movable pan,
7 ... movable frame, 7A ... central portion, 8 ... movable mechanism, 31 ... seat back displacement portion,
31A ... Back side, 32 ... Seat back fixing part, 32A ... First side part, 32B ... Second side part,
32C ... Upper part, 32D ... First shield part, 32E ... Second shield part, 32F ... Back part,
32G ... convex portion, 33 ... frame portion, 51 ... first side frame, 52 ... second side frame.

Claims (3)

A vehicle seat comprising a seat cushion, a seat back, and a back frame constituting a skeleton of the seat back,
The seat back is
A displacement part displaceable with respect to the back frame;
A fixing portion fixed to the back frame;
Have
The fixing part is
Two side portions that are disposed outside the back frame and the displacement portion in the seat width direction and extend in the up-down direction;
An upper portion disposed above the back frame and the displacement portion and extending in a seat width direction;
At least one plate-like shield part that is disposed in front of the back frame and extends from the two side parts or the upper part to the rear of the displacement part;
Have
The vehicle seat, wherein the at least one shield part is disposed at a position that always overlaps the displaced displacement part as viewed from the front of the seat. The vehicle seat according to claim 1,
The vehicle seat, wherein the at least one shield portion extends in parallel with a back surface behind the seat of the displacement portion when the displacement portion is in an initial position where the displacement portion is not displaced. The vehicle seat according to claim 1 or 2,
The vehicle seat, wherein the at least one shield portion curves toward the rear of the seat as it is separated from the two side portions or the upper portion.