JP2019023019A - Vehicle sheet - Google Patents

Abstract

To provide a vehicle sheet capable of improving designability.SOLUTION: An insertion body 33 is provided which is arranged inside of a back surface part 31b and is formed of a material harder than the back surface part 31b, which can enhance rigidity of the back surface part 31b. Thereby, when a skin 32 coating the back surface part 31b is pulled out to the rear side of a seat back 3, deformation (deformation following displacement of skin 32) of the back surface part 31b to the rear side of the seat back 3 can be suppressed. Because the insertion body 33 is arranged in such a form to extend in an extension direction of a side frame 30, for example, when the skin 32 coating the back surface part 31b is pulled out to the rear side of the seat back 3, deformation such as bending of the back surface part 31 can be suppressed. Generation of a gap between the skin 32 coating the back surface part 31b and a side air bag 5 can be suppressed by suppression of deformation of the back surface part 31b, and accordingly designability of a vehicle sheet 1 is improved.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle seat, and more particularly, to a vehicle seat capable of improving design properties.

  A technique for fixing a side airbag provided on a side of a seat back to a side frame of the seat back is known. For example, Patent Document 1 discloses a technique (exposed from the skin) in which a pad (cushion member) and an area where the skin does not exist are formed in the seat back, and the airbag unit fitted in the area is fixed to the side frame of the seat back. An external side airbag) is disclosed.

Japanese Unexamined Patent Publication No. 09-132102 (for example, paragraphs 0026 and 0030, FIG. 3)

  However, in the conventional technology described above, when the skin is pulled to the rear side of the seat back, the cushion member located on the back side of the side airbag is directed toward the rear side of the seat back (following the displacement of the skin). Deform. Therefore, since a gap is easily generated between the side airbag and the skin covering the cushion member on the back side of the side airbag, there is a problem that the design of the vehicle seat is deteriorated.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle seat that can improve the design.

  In order to achieve this object, a vehicle seat according to the present invention has a side frame extending in the vertical direction of a seat back and a recessed portion that is recessed from the side toward the side frame and is supported by the side frame. A cushion member, a skin covering the cushion member, and a side airbag that is fitted into the recessed portion of the cushion member and is fixed to the side frame in a manner exposed from the skin. The member includes a back surface portion located on the back surface side of the side airbag, and is disposed inside the back surface portion in a manner extending in the extending direction of the side frame and is harder than the back surface portion. An insert is formed from the material.

  According to the vehicle seat according to claim 1, since the vehicle seat includes the insert that is disposed inside the back surface portion and is formed of a material harder than the back surface portion, the back surface portion is located on the back side of the side airbag. The rigidity of can be increased. Thereby, when the skin covering the back surface portion is pulled to the rear side of the seat back, deformation of the back surface portion toward the rear side of the seat back (deformation following the displacement of the skin) can be suppressed.

  In addition, since the insert is arranged in a manner extending in the extending direction of the side frame, for example, when the skin covering the back portion is pulled to the rear side of the seat back, the back portion in the side view of the seat back Can be prevented from being deformed to be bent. In this way, by suppressing the deformation of the back surface portion, it is possible to suppress the formation of a gap between the skin covering the back surface portion and the side airbag, and thus there is an effect that the design of the vehicle seat is improved.

  According to the vehicle seat of claim 2, in addition to the effect of the vehicle seat of claim 1, the following effect is obtained. The skin is configured as a pocket having an opening located below the upper end of the recessed portion and above the lower end of the recessed portion, and has a back pocket fixed to the skin covering the back side of the back portion. The insert has an upper end located above the opening of the back pocket and a lower end located below the opening of the back pocket, so when the opening of the back pocket is pulled to the rear side of the seat back And it can control that a back part changes in the back side of a seat back. That is, even when the back pocket is fixed to the skin covering the back surface portion, it is possible to suppress the formation of a gap between the skin covering the back surface portion and the side airbag. Therefore, there is an effect that the design of the vehicle seat is improved.

  According to the vehicle seat of the third aspect, in addition to the effect exhibited by the vehicle seat of the first or second aspect, the insert has an upper end positioned above the upper end of the recessed portion and a lower end. Since it is located below the lower end of the recessed portion, the rigidity of the entire back portion located on the back side of the side airbag can be increased. Therefore, since it can suppress that a clearance gap arises between the skin and the side airbag which coat | covers a back surface part in the whole area | region of the back side of a side airbag, there exists an effect that the design property of a vehicle seat improves.

  According to the vehicle seat of claim 4, in addition to the effect achieved by the vehicle seat according to claim 1, at least a part of the insert body is a side airbag in a front view of the seat back. Therefore, the rigidity of the back surface portion at a position close to the side airbag can be increased. Therefore, since it can suppress more effectively that a clearance gap arises between the skin which coat | covers a back surface part, and a side airbag, there exists an effect that the design property of a vehicle seat improves.

  According to the vehicle seat of the fifth aspect, in addition to the effect produced by the vehicle seat of the fourth aspect, the following effect is produced. The side airbag includes an overhanging portion that protrudes from the edge of the recessed portion toward the back side of the back surface portion, and the insert body is disposed at a position where at least a part of the insert overlaps the overhanging portion in a side view of the seat back. Established. Thereby, when the skin is pulled so that the back surface portion is displaced outward in the width direction of the seat back, the back surface portion whose rigidity is increased by the insert can be brought into contact with the overhanging portion through the skin. it can. Therefore, since it can control by a projecting part that a back surface part shifts to the width direction outside, there is an effect that the design nature of a vehicular seat improves.

  According to the vehicle seat of claim 6, in addition to the effect produced by the vehicle seat of claim 4 or 5, either the side airbag or the insert includes the engaging portion, and either of the other Since the engaged portion configured to be engageable with the engaging portion is provided, the insert can be fixed to the side airbag by engaging the engaging portion and the engaged portion. Thereby, since the relative displacement of the insertion body with respect to the side airbag can be restricted, it is possible to more reliably suppress the rear portion from being deformed to the rear side of the seat back. Therefore, since it can suppress more effectively that a clearance gap arises between the skin which coat | covers a back surface part, and a side airbag, there exists an effect that the design property of a vehicle seat improves.

  According to the vehicle seat of the seventh aspect, in addition to the effect achieved by the vehicle seat according to any one of the first to sixth aspects, at least a part of the insert is a side frame in a front view of the seat back. Since it arrange | positions in the position which overlaps with the edge part of the width direction inner side, the edge part (edge part) of the width direction inner side of a side frame can be covered with an insertion body from the back side of a seat back. In this case, since the insert is made of a softer material than the side frame, for example, even when an occupant collides toward the edge portion of the side frame during a vehicle collision, the impact can be mitigated by the insert. . Therefore, since it is not necessary to separately provide a member for covering the edge portion of the side frame, there is an effect that the number of parts is reduced and the product cost of the vehicle seat can be reduced.

  According to the vehicle seat of the eighth aspect, in addition to the effect produced by the vehicle seat according to any one of the first to seventh aspects, the following effect is obtained. The side frame includes a first surface extending in the width direction of the seat back and a second surface extending from an end portion of the first surface on the outer side in the width direction toward the front side of the seat back. The insert body is formed on at least one of an upper side or a lower side of the recessed portion while projecting to the front side in a shape along the second surface from the main body portion and extending vertically in a shape along the first surface. And a protruding portion.

  Thereby, when the skin is pulled so that the back surface portion is deformed inward in the width direction of the seat back, the cushion member whose rigidity is enhanced by the protruding portion can be brought into contact with the second surface of the side frame. Furthermore, when the skin is pulled so that the back portion rotates around the side frame, a cushion member (back portion) whose rigidity is enhanced by the main body portion and the protruding portion, and the first and second surfaces of the side frame , The rotation of the back surface around the side frame can be restricted. That is, since the relative displacement of the back surface portion with respect to the side airbag can be regulated by the side frame, it is possible to more effectively suppress the occurrence of a gap between the skin covering the back surface portion and the side airbag. Therefore, there is an effect that the design of the vehicle seat is improved.

  According to the vehicle seat of the ninth aspect, in addition to the effect produced by the vehicle seat of the eighth aspect, a pair of protrusions are formed on both the upper side and the lower side of the recessed portion. When the skin is pulled so that the portion is displaced in the vertical direction of the seat back, the cushion member whose rigidity is enhanced by the protruding portion can be brought into contact with the side airbag via the skin. Thereby, since the relative displacement with respect to the side airbag of the back part in the up-down direction of a seat back can be controlled, it can control that a gap arises between the upper end or lower end of a side airbag, and the skin which covers a cushion member. Therefore, there is an effect that the design of the vehicle seat is improved.

(A) is a perspective view of the vehicle seat in 1st Embodiment of this invention, (b) is the partial expanded side view of a cushion member. It is a partial expanded sectional view of a vehicle seat. (A) is a perspective view of the insertion body in 2nd Embodiment, (b) is the partial expanded side view of a cushion member. It is a partial expanded sectional view of a vehicle seat. It is a partial expanded sectional view of a vehicle seat. It is a partial expanded side view of the cushion member in a 3rd embodiment. It is a partial expanded sectional view of a vehicle seat.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1A is a perspective view of the vehicle seat 1 in the first embodiment of the present invention, and FIG. 1B is a partially enlarged side view of the cushion member 31. In addition, in FIG.1 (b), the insertion body 33 arrange | positioned inside the cushion member 31 is illustrated with the broken line.

  As shown in FIG. 1, a vehicle seat 1 is a seat mounted on a vehicle (for example, an automobile) and is connected to a seat cushion 2 that forms a seating surface and a rear end of the seat cushion 2 and has a backrest. A seat back 3 that forms a seat back, a headrest 4 that is disposed at the upper end of the seat back 3, a side airbag 5 that is fixed to the side surface on the outer side in the width direction of the seat back 3, and a back side of the seat back 3. A back pocket 6 to be provided. In addition, the side in the width direction of the seat back 3 is defined as “outside in the width direction”, and the center side is defined as “inside in the width direction”.

  The seat back 3 forms a skeleton and connects a pair of side frames 30 (see FIG. 2) opposed to each other at a predetermined interval in the width direction of the seat back 3 and connects the upper ends of the pair of side frames 30 to each other. An upper frame (not shown), a cushion member 31 supported by the side frame 30 and the upper frame, a skin 32 covering the cushion member 31, and a cushion member disposed inside the cushion member 31 And an insert 33 formed of a material harder than 31.

  The cushion member 31 has an opening 31a formed on the outer side in the width direction (the surface on the front side in the direction perpendicular to the plane of FIG. 1B), and the back side of the opening 31a of the cushion member 31 (see FIG. 1 (b) and a rear portion 31b configured as a portion located on the left side), and is formed from a foamed resin (for example, flexible polyurethane foam) having elasticity.

  The opening 31a is formed as a through-hole penetrating in the width direction of the seat back 3, and the side airbag 5 is fitted into a space formed by the opening 31a. Therefore, the back surface portion 31 b is disposed on the back surface side (rear side) of the side airbag 5.

  The side airbag 5 incorporates an airbag (not shown) that protects an occupant by deploying when the vehicle collides, an inflator (not shown) that inflates the airbag, and the airbag and the inflator. The airbag device includes a case 50 formed in a box shape whose outer side in the width direction is open, and a lid portion 51 that closes the opening of the case 50 and is opened by the inflation pressure of the airbag.

  The skin 32 is a soft member made of fabric, synthetic leather, leather, or the like, and the back pocket 6 is fixed to a portion of the skin 32 that covers the back side of the cushion member 31 (back surface portion 31b). . The back pocket 6 has an opening 60 (pocket opening) below the upper end of the opening 31a (lower side in FIG. 1A) and above the lower end of the opening 31a (in FIG. 1A). It is configured as a pocket located on the upper side).

  Next, the detailed configuration of the vehicle seat 1 will be described with reference to FIG. FIG. 2 is a partially enlarged sectional view of the vehicle seat 1. Note that FIG. 2 illustrates a cross section of the vehicle seat 1 at a position corresponding to the line II-II in FIG. In FIG. 2, the structure of the vehicle seat 1 is schematically illustrated, and the internal structure of the side airbag 5 is not illustrated.

  As shown in FIG. 2, the side frame 30 includes a first frame 30a extending in the width direction of the seat back 3 (left and right direction in FIG. 2), and an end on the outer side in the width direction of the first frame 30a (right side in FIG. 2). And a second frame 30b that extends forward (upward in FIG. 2) from the section, and is configured as a frame that extends in the vertical direction (height direction) of the seat back 3 (perpendicular to the plane of FIG. 2).

  The first frame 30a includes a first surface 30a1 configured as a back surface on the rear side (the lower side in FIG. 2), and a back surface portion 31b is disposed on the rear side of the first surface 30a1. A plate-shaped press felt P is disposed between the first surface 30a1 and the back surface portion 31b. The press felt P is made of a material harder than the cushion member 31 and softer than the side frame 30 (first frame 30a) (for example, a felt having a Shore A hardness of 50 or more).

  The end portion on the inner side in the width direction of the press felt P is disposed on the inner side in the width direction from the first frame 30a, and the end portion on the inner side in the width direction of the first frame 30a (the left edge portion in FIG. 2) is the press felt P. Covered from the rear side. Thereby, even if a passenger | crew collides toward the edge part of the 1st flame | frame 30a, the impact added to a passenger | crew can be relieve | moderated by the press felt P. FIG.

  The second frame 30b includes a second surface 30b1 configured as an outer surface in the width direction, and an opening 31a is formed through the second surface 30b1.

  Here, a portion of the outer skin 32 that covers the inner peripheral surface of the opening 31a and the second surface 30b1 of the second frame 30b exposed to the opening 31a is defined as an inner skin 32a. The opening 31a is formed so that the inner circumference thereof is slightly larger than the outer shape of the case 50, and the case 50 is fitted into the opening 31a in a state where the inner skin 32a is covered with the opening 31a.

  That is, the side airbag 5 is configured as an external airbag that is fixed in a manner exposed from the skin 32, and the case 50 of the side airbag 5 is connected to the second frame via the skin 32 (inner skin 32a). It is fixed to 30b with bolts B and nuts N.

  Here, for example, the inner skin 32a is omitted, and the terminal of the skin 32 is directly connected to the side airbag 5 (the case 50 or the lid portion 51), or the shape conforming to the outer shape of the case 50 of the side airbag 5 is used. It is also possible to adopt a configuration in which a box (for example, one formed from a hard resin material or a metal material) is fixed to the second frame 30b and the end of the skin 32 is connected to the box.

  However, in the former configuration, the skin 32 is connected to the side airbag 5 after the side airbag 5 is inserted into the opening 31a (or the side airbag 5 is opened after the skin 32 is connected to the side airbag 5). Therefore, it takes time to assemble the side airbag 5 and the skin 32. Moreover, in the latter structure, since it is necessary to use a box, the number of parts increases.

  On the other hand, in this embodiment, by providing the inner skin 32a that covers the inner peripheral surface of the opening 31a and the second surface 30b1 of the second frame 30b, the terminal of the skin 32 is attached to the side airbag 5. Direct connection is unnecessary. Moreover, since the member (for example, the box mentioned above) for fixing the terminal of the skin 32 can be omitted, the number of parts can be reduced.

  In this case, for example, the skin 32 covering the back surface portion 31b may be pulled rearward by the occupant. In particular, in the present embodiment, the back pocket 6 is fixed to the skin 32 covering the back surface portion 31b, and therefore the skin 32 covering the back surface portion 31b is located on the rear side of the seat back 3 starting from the opening 60 of the back pocket 6. The opportunity to be pulled increases. When the skin 32 is pulled rearward, the back surface portion 31b deforms to the rear side of the seat back 3 following the displacement of the skin 32 (inner skin 32a) (for example, a side view of the cushion member 31 (FIG. 1B)). ))), The back surface portion 31b may be deformed so as to be bent in a dogleg shape. However, in the present embodiment, such deformation is regulated by the insert 33.

  The insert 33 is configured as a metallic wire having a circular cross section. The insert 33 is integrally formed with the cushion member 31 when the cushion member 31 is molded, and is disposed inside the back surface portion 31b so as to extend in the vertical direction of the seat back 3 (the extending direction of the side frame 30). The

  That is, the rigidity of the back surface portion 31b located on the rear side of the side airbag 5 can be increased by disposing the insert 33 made of a metal wire inside the back surface portion 31b. Therefore, when the skin 32 covering the back surface portion 31b is pulled rearward, the back surface portion 31b can be prevented from being deformed rearward (following the displacement of the skin 32).

  Moreover, since the insert 33 is disposed in a manner extending in the vertical direction of the seat back 3, the rigidity of the back surface portion 31b in the vertical direction can be increased. Therefore, when the skin 32 covering the back surface portion 31b and the back pocket 6 fixed to the skin 32 are pulled rearward, the back surface portion 31b bends rearward in a side view of the seat back 3. Deformation can be suppressed.

  Thus, by increasing the rigidity of the back surface portion 31b located on the rear side of the side airbag 5 and suppressing the deformation thereof, the skin 32 covering the back surface portion 31b and the side airbag 5 (the edge of the lid portion 51) It can suppress that a clearance gap arises between. Therefore, the designability of the vehicle seat 1 is improved.

  In particular, in the present embodiment, since the entire insert 33 is disposed at a position overlapping the side airbag 5 (case 50) in the front view of the seat back 3, the back portion 31b at a position close to the lid portion 51 is provided. The rigidity of can be increased. That is, by increasing the rigidity of the end portion on the outer side in the width direction of the cushion member 31, it is possible to more effectively suppress the occurrence of a gap between the skin 32 that covers the back surface portion 31b and the side airbag 5.

  Further, when the seat back 3 is viewed from the front, the entire insert 33 is disposed at a position overlapping the side airbag 5 (case 50), and the rigidity of the back surface portion 31b located on the rear side of the side airbag 5 is increased. Accordingly, a part of the reaction force when the airbag is injected to the front side of the side airbag 5 can be supported by the back surface portion 31b (the one whose rigidity is increased by the insertion body 33). That is, since the reaction force at the time of injection of the airbag can be efficiently supported from the rear side of the side airbag 5, for example, the side frame 30 can be given more strength than necessary, and the bolt B and the nut N can be attached. Setting the number more than necessary can be suppressed. Therefore, the degree of freedom in designing the seat back 3 can be increased.

  Further, in the vertical direction of the seat back 3, the dimension of the insert 33 is formed longer than the dimension of the opening 31a, the upper end of the insert 33 is positioned above the upper end of the opening 31a, and the lower end is the opening 31a. Since it is located below the lower end (see FIG. 1B), the overall rigidity of the back surface portion 31b located on the rear side of the side airbag 5 can be increased. Therefore, in the entire region on the rear side of the side airbag 5, it is possible to suppress the generation of a gap between the skin 32 that covers the back surface portion 31 b and the side airbag 5.

  In addition, since the upper end of the insert 33 is located above the opening 60 of the back pocket 6 and the lower end of the insert 33 is located below the opening 60 of the back pocket 6, the back pocket on the back side of the back portion 31b. Even when 6 is disposed, it is possible to suppress the generation of a gap between the skin 32 covering the back surface portion 31b and the side airbag 5 (the edge of the lid portion 51).

  Here, for example, in order to suppress the deformation of the back surface portion 31b, it is possible to increase the rigidity (section modulus) by forming the back surface portion 31b with a large thickness in the front-rear direction. That is, for example, it is possible to employ a configuration in which the thickness of the end portion on the outer side in the width direction of the back surface portion 31b is increased (the thickness in the front-rear direction is set to a predetermined thickness and the back surface portion 31b is formed in a rectangular cross section). It is. However, in such a configuration, the space in the front-rear direction of the seat back 3 cannot be used efficiently because the thickness of the back surface portion 31b increases.

  On the other hand, in this embodiment, since the insertion body 33 is inserted into the end portion on the outer side in the width direction of the back surface portion 31b, the end portion on the outer side in the width direction of the back surface portion 31b is formed to be relatively thin. The rigidity of 31b can be secured (deformation of the back surface part 31b can be suppressed). Therefore, the space in the front-rear direction of the seat back 3 can be efficiently used while suppressing the generation of a gap between the skin 32 covering the back surface portion 31 b and the side airbag 5.

  Furthermore, since the edge part of the width direction outer side of the back surface part 31b can be formed comparatively thinly, the thickness of the back surface part 31b can be formed gradually thin from the width direction center side to the width direction outer side. Therefore, since the back surface of the back surface part 31b can be configured as a curved surface, the design of the vehicle seat 1 can be improved.

  In addition, for example, in order to suppress the formation of a gap between the skin 32 and the side airbag 5 in the entire region surrounding the side airbag 5 (lid 51), the rear side of the side airbag 5 and the upper side It is also possible to employ a configuration in which the insertion body 33 is inserted into the cushion member 31 located on each of the side, the lower side, and the front side.

  However, with this configuration, the cushion member 31 positioned on the front side (seat surface side) of the side airbag 5 is increased in rigidity, so that the sitting comfort may be reduced. In order to solve this problem, the insert 33 is inserted into the cushion member 31 located on each of the upper side, the lower side, and the rear side of the side airbag 5 (for example, the insert 33 in a side view). Can be adopted. However, in this configuration, since the insert 33 is three-dimensionally arranged inside the cushion member 31, it is difficult to set the insert 33 in the mold when the cushion member 31 is molded.

  On the other hand, in this embodiment, since the insert 33 is configured as a straight wire and is disposed only on the rear side of the side airbag 5, the front side (seat surface side) of the side airbag 5 is disposed. An increase in the rigidity of the cushion member 31 can be suppressed, and the sitting comfort of the vehicle seat 1 can be improved. Further, the insert 33 can be easily set in the mold when the cushion member 31 is molded.

  Here, the back surface portion 31b may not only be deformed rearward but also deformed in the width direction. On the other hand, in the present embodiment, since the lid portion 51 is formed so as to protrude rearward from the edge of the case 50 (opening portion of the opening portion 31a), the displacement of the back surface portion 31b to the outside in the width direction is a lid. It can be regulated by the part 51.

  That is, the insertion body 33 is disposed on the front side of the rear end of the lid portion 51, and the entire insertion body 33 is disposed at a position overlapping the lid portion 51 in the side view of the seat back 3. When the skin 32 is pulled so that 31b is displaced outward in the width direction, the back surface portion 31b whose rigidity is enhanced by the insert 33 can be brought into contact with the lid portion 51 via the skin 32. Therefore, since the back part 31b can be regulated by the lid part 51 from being displaced outward in the width direction, the design of the vehicle seat 1 is improved.

  Further, since the lid portion 51 is formed in a shape that curves inward in the width direction from the edge of the case 50 to the rear side, when the back surface portion 31b contacts the lid portion 51 via the skin 32, the back surface portion 31b can be displaced along the curved surface of the lid portion 51 toward the case 50 (upper side in FIG. 2). Therefore, since it can suppress that the back surface part 31b deform | transforms so that it may get over the rear end of the cover part 51, it can suppress more effectively that the back surface part 31b is displaced to the width direction outer side.

  Next, a second embodiment will be described with reference to FIG. In the first embodiment, the case where the insert 33 is configured as a metal wire has been described. In the second embodiment, the case where the insert 233 is configured as a molded body made of a resin material will be described. In addition, the same code | symbol is attached | subjected to the part same as 1st Embodiment mentioned above, and the detailed description is abbreviate | omitted.

  FIG. 3A is a perspective view of the insert 233 in the second embodiment, and FIG. 3B is a partially enlarged side view of the cushion member 31. In addition, in FIG.3 (b), the insertion body 233 arrange | positioned inside the cushion member 31 is shown with the broken line.

  As shown in FIG. 3, the insert 233 includes a main body 233a extending in the vertical direction of the seat back 203 (the vertical direction in FIG. 3B), and the outer side in the width direction of the main body 233a (in FIG. 3B). A molded body made of a resin material (the main body 233a) and a protrusion 233b that protrudes from the upper and lower ends of the main body 233a to the front side (the right side in FIG. 3B). In the embodiment, it is made of a foamed material made of beaded foamed polypropylene. The insert 233 is integrally formed with the cushion member 31 when the cushion member 31 is molded, and is disposed inside the back surface portion 31b.

  The main body 233a is formed such that the size of the seat back 203 in the vertical direction is longer than the size of the opening 31a. The main body 233a has an upper end located above the upper end of the opening 31a and a lower end located below the lower end of the opening 31a (see FIG. 1B). Therefore, the upper end of the main body 233a is positioned above the opening 60 of the back pocket 6, and the lower end of the main body 233a is positioned below the opening 60 of the back pocket 6 (back pocket 6). (See FIG. 1 (a)).

  Thereby, similarly to 1st Embodiment, the rigidity in the up-down direction of the back surface part 31b is improved with the main-body part 233a in the whole area of the back side (left side of FIG.3 (b)) of the opening part 31a (side airbag 5). be able to. Therefore, it can suppress that a clearance gap arises between the skin 32 and the side airbag 5 which cover the back surface part 31b.

  Next, the detailed configuration of the vehicle seat 201 will be described with reference to FIGS. 4 and 5. 4 and 5 are partially enlarged cross-sectional views of the vehicle seat 201. FIG. 4 illustrates a cross section of the vehicle seat 201 at a position corresponding to the line IV-IV in FIG. 3B, and FIG. 5 illustrates a position at the position corresponding to the line VV in FIG. The cross section of the vehicle seat 201 is illustrated. 4 and 5, the structure of the vehicle seat 201 is schematically illustrated, and the internal structure of the side airbag 5 is not illustrated.

  As shown in FIG. 4, the body portion 233 a has an inner end in the width direction (left and right direction in FIG. 4) disposed on the inner side in the width direction than the second frame 30 b, and on the inner side in the width direction of the first frame 30 a. The end portion (the edge portion on the left side in FIG. 4) is covered from the rear side by the main body portion 233a.

  In this case, the insert 233 (main body portion 233a) is configured as a foam material made of bead-method foamed polypropylene and is formed of a softer material than the first frame 30a, so that the occupant collides toward the first frame 30a. Even so, the impact applied to the occupant can be mitigated by the insert 233 (main body 233a). That is, the press felt P described in the first embodiment can be omitted by having the insert 233 also function as a member that covers the edge portion of the first frame 30a. Therefore, since the number of parts is reduced, the product cost of the vehicle seat 201 can be reduced.

  Since the end portion on the outer side in the width direction of the main body portion 233a is located outside the center in the width direction of the side airbag 5 (case 50), the rigidity of the back surface portion 31b at a position close to the lid portion 51 can be increased. . Therefore, similarly to the insert 33 of the first embodiment, it is possible to more effectively suppress a gap between the outer skin 32 covering the back surface portion 31b and the side airbag 5, and the air of the side airbag 5 can be suppressed. A part of the reaction force when the bag is injected can be supported by the back surface portion 31b.

  Further, since the end portion on the outer side in the width direction of the main body portion 233a is located at the end portion on the outer side in the width direction of the back surface portion 31b, the end portion on the outer side in the width direction of the back surface portion 31b is formed relatively thin, and Rigidity can be secured (deformation of the back surface portion 31b can be suppressed). Furthermore, since the edge part of the width direction outer side of the back surface part 31b can be formed comparatively thinly, the back surface of the back surface part 31b can be comprised as a curved surface.

  Further, the front end (upper end in FIG. 4) of the main body 233a is located on the front side of the rear end (lower end in FIG. 4) of the lid 51, and the main body in the side view of the seat back 3 is seen. Since a part of 233a is disposed at a position where it overlaps the lid 51, the lid 51 can restrict the back surface 31b from being displaced outward in the width direction.

  As shown in FIG. 5, the front surface (upper surface in FIG. 5) of the main body 233a is formed in a shape along the first surface 30a1, and the inner surface in the width direction (left-right direction in FIG. 5) of the protrusion 233b is , Formed in a shape along the second surface 30b1. Thereby, when the skin 32 is pulled so that the back surface portion 31b is deformed inward in the width direction, the cushion member 31 (the portion located above and below the opening portion 31a) whose rigidity is enhanced by the protruding portion 233b is removed. It can be brought into contact with the second surface 30b1. Therefore, since the displacement to the inner side in the width direction of the back surface portion 31b can be regulated, it is possible to more effectively suppress the occurrence of a gap between the skin 32 covering the back surface portion 31b and the side airbag 5.

  Further, when the skin 32 is pulled so that the back surface portion 31b rotates around the side frame 30, the back surface portion 31b whose rigidity is enhanced by the main body portion 233a is brought into contact with the first surface 30a1, and the protruding portion 233b. Thus, the cushion member 31 (the portion positioned above and below the opening 31a) whose rigidity is increased can be brought into contact with the second surface 30b1.

  Accordingly, the rotation of the back surface portion 31b around the side frame 30 can be restricted by the hooking between the cushion member 31 (back surface portion 31b) whose rigidity has been increased by the insertion body 233 and the side frame 30. Therefore, it can suppress more effectively that a clearance gap arises between the skin 32 and the side airbag 5 which coat | cover the back surface part 31b.

  In addition, a curved surface that curves in a convex shape toward the outer side in the width direction is formed at the rear end of the second surface 30b1 (the lower end portion in FIG. 5) (the connected portion with the first surface 30a1). Since the protrusion 233b includes an inner surface 233b1 that is formed at a position corresponding to the curved surface of the second surface 30b1 and curves outward in the width direction, the inner surface 233b1 is engaged with the curved surface of the second surface 30b1. be able to.

  Thereby, the relative displacement (for example, displacement to the back side of the back surface part 31b) of the back surface part 31b with respect to the side airbag 5 can be controlled by engagement with the curved surface of the 2nd surface 30b1, and the inner surface 233b1. Therefore, it can suppress more effectively that a clearance gap arises between the skin 32 and the side airbag 5 which coat | cover the back surface part 31b.

  Further, since a pair of protrusions 233b are formed on both the upper side and the lower side of the opening 31a (side airbag 5) (see FIG. 3), the outer skin 32 so that the back surface 31b is displaced in the vertical direction. Is pulled, the cushion member 31 (the portion positioned above and below the opening 31a) whose rigidity is enhanced by the protrusion 233b can be brought into contact with the case 50 via the inner skin 32a. Thereby, since the relative displacement with respect to the side airbag 5 of the back surface part 31b in an up-down direction can be controlled, the upper end or lower end of the side airbag 5 and the cushion member 31 (parts located above and below the opening 31a) are covered. It can suppress that a clearance gap produces between the outer skin 32 to perform.

  Further, the protrusions 233b are formed as a pair on both the upper side and the lower side of the opening 31a, and the front end of the protrusion 233b is located on the rear side of the front end of the second frame 30b. The increase in the rigidity of the cushion member 31 on the side (seat surface side) can be suppressed, and the sitting comfort of the vehicle seat 201 can be improved.

  Next, a third embodiment will be described with reference to FIG. In the first embodiment, the case where the entire insertion body 33 is disposed inside the back surface portion 31b has been described. However, in the second embodiment, a part of the insertion body 333 is exposed from the back surface portion 31b, and the exposure is performed. The case where a part is fixed to the side airbag 305 is demonstrated. In addition, the same code | symbol is attached | subjected to the part same as 1st Embodiment mentioned above, and the detailed description is abbreviate | omitted.

  FIG. 6 is a partially enlarged side view of the cushion member 331 in the third embodiment. In addition, in FIG. 6, the notch part 31c formed in the cushion member 331 and the insert 333 arrange | positioned inside the cushion member 331 are shown with the broken line.

  As shown in FIG. 6, the cushion member 331 includes a notch portion 31 c formed by notching a part of the front surface (right side surface in FIG. 6) of the back surface portion 31 b. A pair of notches 31c are formed at a predetermined interval in the region where the opening 31a is formed. By forming the pair of notches 31c, a part of the insert 333 is exposed to the opening 31a via the notches 31c.

  The insert 333 is configured as a metal wire having a circular cross section, and has the same configuration as the insert 33 of the first embodiment, except that the insert 333 includes a pair of bent portions 333a that are bent from the upper and lower ends toward the front side. It is said. A pair of bent portions 333a are formed on both the upper side and the lower side of the opening 31a (side airbag 305). Therefore, the displacement of the back surface portion 31b to the inner side in the width direction (the rear side in the vertical direction in the drawing of FIG. 6) can be regulated by the second frame 30b, and the vertical displacement of the back surface portion 31b is controlled by the case 50 of the side airbag 5. The same effect as that of the protruding portion 233b of the second embodiment can be obtained in that it can be regulated by the above.

  Next, a detailed configuration of the vehicle seat 301 will be described with reference to FIG. FIG. 7 is a partially enlarged sectional view of the vehicle seat 301. 7 illustrates a cross section of the vehicle seat 301 at a position corresponding to the line VII-VII in FIG. In FIG. 7, the structure of the vehicle seat 301 is schematically illustrated, and the internal structure of the side airbag 305 is not illustrated.

  As shown in FIG. 7, the skin 332 includes a through hole 32b formed at a position corresponding to the notch 31c and penetrating the skin 32 (inner skin 32a), and is inserted through the through hole 32b. The body 333 is exposed.

  The side airbag 305 includes a pair of engaging portions 352 protruding from the back surface (the lower surface in FIG. 7) of the case 50 toward the rear side. The pair of engaging portions 352 are formed at positions corresponding to the pair of cutout portions 31c (through holes 32b), respectively, and are slightly shorter than the vertical size of the cutout portions 31c (through holes 32b). Is done. Therefore, the engaging portion 352 can be inserted on the back surface portion 31b side through the notch portion 31c (through hole 32b).

  In this case, the engaging portion 352 is configured as a hook having a C-shaped cross section having an inner diameter slightly smaller than the outer diameter of the insertion body 333, and the interval between the cut portions (opening portions having a C-shaped cross section) is the insertion space. The dimension is set to be shorter than the diameter of 333, and the cut portion is disposed in a posture facing the rear side. Therefore, by pressing the insert 333 toward the engaging portion 352, the engaging portion 352 is elastically deformed along the outer peripheral surface of the insert 333, and the insert 333 is fitted into the engaging portion 352. it can.

  Thereby, since the insert 333 can be fixed to the side airbag 305, the relative displacement of the insert 333 with respect to the side airbag 305 can be regulated. Therefore, since it can suppress more reliably that the back surface part 31b deform | transforms into the width direction inner side or back side, it is more effective that a clearance gap produces between the outer skin 332 and the side airbag 305 which coat | cover the back surface part 31b. Can be suppressed.

  Further, since the cut portion of the engaging portion 352 is directed to the rear side, the insert 333 is engaged with the engaging portion 352 by pressing the back surface portion 31b against the case 50 after fixing the case 50 to the second frame 30b. Can be made. Therefore, even if the rear portion 31b is fixed to the side airbag 305, the side airbag 305 can be easily assembled.

  Here, when the engagement of the engaging portion 352 with respect to the insert 333 is hindered by the back surface portion 31b covering the insert 333, for example, the shape of the hook of the engaging portion 352 is inserted in the side view. What is necessary is just to form in the shape (triangle shape) pointed to the side. Thereby, since the engaging part 352 easily bites into the back surface part 31b, even when the outer periphery of the insertion body 333 is covered with the back surface part 31b, the engaging part 352 can be easily engaged with the insertion body 333. .

  In addition, since the bent portion 333a is formed on both the upper side and the lower side of the opening 31a (side airbag 5) (see FIG. 6), the insert 333 tends to be displaced vertically along the engaging portion 352. In this case, the cushion member 331 (the portion located above and below the opening 31a) whose rigidity is enhanced by the bent portion 333a and the case 50 are brought into contact with each other via the skin 32 (inner skin 32a). it can.

  Thereby, the cushion member 31 (the part located above and below the opening 31a) and the case where the relative displacement of the back surface part 31b with respect to the side airbag 5 in the vertical direction (the vertical direction in FIG. 7) is increased and the case. It can be regulated by catching with 50. Therefore, it can suppress more effectively that a clearance gap produces between the outer skin 332 and the side airbag 305 which coat | cover the back surface part 31b.

  The present invention has been described based on the above embodiment, but the present invention is not limited to the above embodiment, and various modifications can be easily made without departing from the spirit of the present invention. It can be guessed.

  In each of the above embodiments, the case where the inserts 33 and 333 are configured as metal wires and the insert 233 is configured as a foam material made of bead-method foamed polypropylene has been described. The constituent material is not limited. That is, the inserts 33, 233, 333 may be formed from a material harder than at least the cushion members 31, 331. For example, the inserts 33, 233, 333 may be formed from a resin material having a Shore A hardness of 50 or more. Further, the inserts 33, 233, 333 may be formed from a sponge-like material made of urethane chips.

  Further, as in the second embodiment, in the case where the end of the first frame 30a in the width direction is covered with the insert 233 and the press felt P is omitted, the insert 233 is at least the first frame 30a. It may be formed from a softer resin material. In the case where the engaging portion 352 and the insert 333 are engaged as in the third embodiment, the insert 333 is made of a hard resin material (for example, Rockwell R hardness is 80 to 100). (Resin material).

  In each of the above embodiments, the case where the opening 31a is configured as a through-hole penetrating from the side of the cushion members 31 and 331 toward the second frame 30b has been described, but the present invention is not necessarily limited thereto. For example, a configuration may be employed in which a recessed portion that is recessed from the side of the cushion members 31 and 331 toward the second frame 30b is provided, and the side airbags 5 and 305 are fitted into the recessed portion.

  In each said embodiment, although the cover part 51 was illustrated as an example of the overhang | projection part projected toward the back side from the edge of the opening part 31a, it is not necessarily restricted to this. For example, a configuration in which a portion corresponding to the overhanging portion is provided in addition to the lid portion may be used. That is, as in each of the above-described embodiments, if the lid portion 51 is configured to project from the edge of the opening portion 31a toward the rear side, the function of closing the case 50 and the displacement of the back surface portion 31b to the outside in the width direction. Since the lid 51 can also be used for the function of regulating the number of parts, the number of parts is reduced.

  In the first embodiment, the case where the entire insert 33 is disposed at the position overlapping the lid 51 in the side view of the seat back 3 has been described, but the present invention is not necessarily limited thereto. If at least the central part in the front-rear direction of the insert 33 is positioned forward of the rear end of the lid 51, the back 31b is brought into contact with the lid 51 via the skin 32 when the back 31b is in contact with the lid 51. Can be restricted by the lid 51 from being displaced outward in the width direction.

  In the third embodiment, the case where the insert 333 is configured as a wire and the engaging portion 352 is engaged with the insert 333 has been described. However, the present invention is not limited to this, and the insert 333 and the side The means for engaging the airbag 305 is not limited. Therefore, for example, a configuration in which an engaging portion that engages with the insertion body 333 is provided in the lid portion 51 may be employed. Alternatively, the insertion body 333 may be provided with a hook, and the hook may be hooked on the side airbag 305 (for example, a hole formed in the case 50).

  In the third embodiment, the case where the two notches 31c are formed in the cushion member 331 (that is, the insert 333 and the engaging portion 352 are engaged at two locations) has been described. It is not limited to this. For example, one or three or more cutout portions 31c may be formed in the cushion member 331.

  Further, for example, among the one or a plurality of cutout portions 31 c, the upper end of one cutout portion 31 c is positioned above the opening 60 of the back pocket 6, and the lower end thereof is below the opening 60 of the back pocket 6. It may be configured to be positioned. Thereby, when the opening 60 of the back pocket 6 is pulled back, it can suppress more effectively that the back surface part 31b deform | transforms back.

1,201,301 Vehicle seat 3,203,303 Seat back 31,331 Cushion member 31a Opening (recessed portion)
31b Back surface part 32,332 Skin 33,233,333 Insert 333 Engagement part 352 Engagement part 5,305 Side airbag 51 Lid part (overhang part)
6 Back pocket 60 opening

Claims (9)

A side frame extending in the vertical direction of the seat back, a cushion member having a recessed portion recessed from the side toward the side frame and supported by the side frame, and a skin covering the cushion member; A side airbag that is fitted in the recessed portion of the cushion member and is fixed to the side frame in a manner exposed from the skin, and the cushion member is located on the back side of the side airbag. In a vehicle seat comprising:
A vehicle seat, comprising: an insert body that is disposed in the rear portion in a manner extending in the extending direction of the side frame and is formed of a material harder than the rear portion. The skin is configured as a pocket having an opening located below the upper end of the recessed portion and above the lower end of the recessed portion, and is fixed to the skin covering the back side of the back surface portion. With a back pocket,
The vehicle seat according to claim 1, wherein the insert has an upper end positioned above the opening of the back pocket and a lower end positioned below the opening of the back pocket.   3. The vehicle according to claim 1, wherein an upper end of the insert is located above the upper end of the recessed portion and a lower end thereof is located below the lower end of the recessed portion. Sheet.   The vehicle seat according to any one of claims 1 to 3, wherein at least a part of the insert is disposed at a position overlapping the side airbag in a front view of the seat back. The side airbag includes a projecting portion that projects from an edge of the recessed portion toward the back side of the back surface portion,
The vehicle seat according to claim 4, wherein at least a part of the insertion body is disposed at a position overlapping the projecting portion in a side view of the seat back.   5. Either the side airbag or the insert body includes an engaging portion, and either one includes an engaged portion configured to be engageable with the engaging portion. 5. The vehicle seat according to 5.   The insert is formed of a material softer than the side frame, at least a part of which is disposed at a position overlapping with an end portion on the inner side in the width direction of the side frame in a front view of the seat back. The vehicular seat according to any one of claims 1 to 6 characterized by things. The side frame includes a first surface extending in the width direction of the seat back, and a second surface extending from an end portion of the first surface in the width direction toward the front side of the seat back,
The insert has a main body extending vertically in a shape along the first surface, and protrudes forward from the main body in a shape along the second surface, and at least above or below the recessed portion. The vehicle seat according to claim 1, further comprising a protruding portion formed on one side.   The vehicular seat according to claim 8, wherein a pair of the protruding portions are formed on both the upper side and the lower side of the recessed portion.

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