JP2012192896A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat by which positional deviation of a cushion material to be attached to cover a shell.SOLUTION: The vehicle seat 1 includes a shell 20 attached to a seat frame 10 and a cushion material 30 attached to cover the surface of the shell 20. A magnet 211 and a recessed part 221 or a projecting part 321 are provided to one of the surface of the shell 20 and the rear surface of the cushion material 30. A magnetic body 311 opposed to the magnet 211 and a projecting part 321 or a recessed part 221 with which the recessed part 221 or the projecting part 321 is engaged when the cushion material 30 is positioned in the prescribed position of the shell 20 are provided to the other of the surface of the shell 20 and the rear surface of the cushion material 30.

Description

  The present invention relates to a vehicle seat including a shell for improving support performance and a cushion material attached to cover the shell.

  The following Patent Document 1 describes a configuration in which a cushion is detachably fixed to a seat plate with a magnet (see FIG. 5 of Patent Document 1). Such fixing by a magnet can be applied to a vehicle seat as described in Patent Document 2 below. Specifically, a cushion material (foam pad) can be detachably fixed to a shell (shell structure) attached to a seat frame (frame portion) with a magnet. Employing such a configuration improves the workability of attaching the cushion material to the shell.

Japanese Utility Model Publication No. 6-77606 Special table 2008-540224

  However, in the case of joining with a magnet, the force that opposes the force in the direction intersecting the magnet's joining surface is strong, but the force that opposes the force in the direction along the joining surface of the magnet is weak (prone to lateral displacement). There is. That is, when the technique described in Patent Document 1 is applied to a vehicle seat as described in Patent Document 2, there is a problem that the cushion material is displaced laterally with respect to the shell and the cushion material is displaced. .

  In view of the above situation, the problem to be solved by the present invention is to provide a vehicle seat in which a displacement of a cushion material attached so as to cover a shell is prevented.

  In order to solve the above problems, a vehicle seat according to the present invention is a vehicle seat comprising a shell attached to a seat frame and a cushion material attached so as to cover the surface of the shell. One of the front surface and the back surface of the cushion material is provided with a magnet and a concave portion or a convex portion. The other of the front surface of the shell and the back surface of the cushion material is positioned at a predetermined position with respect to the shell. And a convex portion or a concave portion that engages with the magnetic body and the concave portion or the convex portion.

  The “magnetic body” provided on the other of the back surface of the cushion material and the surface of the shell includes a magnet. That is, it includes everything that is magnetically bonded to the magnet provided on one of the back surface of the cushion material and the surface of the shell. Further, the “convex portion or concave portion” (“recess portion or convex portion”) in the above configuration means at least one of the convex portion and the concave portion.

  In the vehicle seat according to the present invention, when the cushion material is positioned with respect to the shell, the magnet and the magnetic body are joined, and the convex portion or the concave portion provided in one of the cushion material and the shell and the other are provided. Therefore, the lateral displacement of the cushion material is unlikely to occur. In other words, the cushion material and the shell are kept in close contact with each other by magnetic force joining (positional displacement in the direction in which the cushion material is detached) is prevented, and the cushion material is positioned in the width direction by the engagement between the convex portion and the concave portion. The configuration is such that displacement (lateral displacement) is prevented. Moreover, since the cushion material and the shell are joined by magnetic force, they can be easily attached and detached. That is, since the positioning of the cushion material with respect to the shell is facilitated, the workability of attaching the cushion material to the shell is excellent.

  In this case, the convex portion provided on the shell or the cushion material overlaps with the concave portion engaged with the convex portion in the mounting direction of the cushion material with respect to the shell, and the overlapped portion is caught in the concave portion. Good.

  Thus, if the convex part provided in the cushion material or the shell and the concave part engaged with it overlap with each other in the mounting direction, the overlapping partial convex part of the convex part is caught in the concave part. , Cushion material is hard to come off from the shell.

  The reason why such a structure can be adopted is that the cushion material is easily elastically deformed. If the above configuration is adopted when both members provided with convex portions or concave portions are hard members that are hardly deformed, the cushion material can be easily elastically deformed when the convex portions and the concave portions cannot be engaged. The above-mentioned member is skillfully utilized to realize the engagement between the convex portion and the concave portion as described above.

  Moreover, the said magnet and the said magnetic body should just be provided so that it may be located in the inner surface of the said recessed part, or the outer surface of the said convex part.

  Thus, if it is the structure joined by the magnet and magnetic body which each provided the convex part and recessed part to engage, a convex part becomes difficult to remove | deviate from a recessed part. That is, the effect of preventing the displacement (lateral displacement) of the cushion material with respect to the shell is further enhanced.

  According to the present invention, the cushion material and the shell are kept in close contact with each other by the magnetic force joining, and the displacement of the cushion material in the width direction is prevented by the engagement between the convex portion and the concave portion. In other words, it is possible to improve the cushion material displacement prevention performance while maintaining the easy attachment / detachment performance of the cushion material.

It is a disassembled perspective view of the vehicle seat concerning this invention. It is the figure which showed typically the cross section (except a seat frame) of the vehicle seat concerning 1st embodiment of this invention. It is the figure which showed typically the cross section (except a seat frame) concerning the vehicle seat concerning 2nd embodiment of this invention, and shows a mode that a cushion material is attached to a shell in order of (a) to (c). It is a thing. It is the figure which showed typically the cross section (except a seat frame) of the vehicle seat concerning the modification of 2nd embodiment of this invention, and a mode that a cushion material is attached to a shell of (a) to (c) It is shown in order. It is the figure which showed typically the cross section (except a seat frame) of the vehicle seat concerning 3rd embodiment of this invention. It is an exploded perspective view of a vehicular seat which is a long shape in which a convex part, a crevice, a magnet, and a magnetic body extend in the width direction.

  Hereinafter, a vehicle seat 1 (2, 2a, 3) according to an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the vertical direction simply refers to the vertical direction (Z direction shown in FIG. 1) of the vehicle seat 1 (2, 2a, 3), and the front-rear direction simply refers to the vehicle seat 1 (2, 2a, 3). 3) refers to the front-rear direction (Y direction shown in FIG. 1), and the width direction simply refers to the width direction (X direction shown in FIG. 1) of the vehicle seat 1 (2, 2a, 3). In FIG. 1, concave portions 221 (222, 222a), convex portions 321 (322, 322a), magnets 211 (213), and magnetic bodies 311 (313), which will be described later, are omitted. 2 to 5 are diagrams schematically showing a cross section (excluding the seat frame 10) obtained by cutting the seat back or the seat cushion along the width direction.

  A vehicle seat 1 according to a first embodiment of the present invention will be described. The vehicle seat 1 includes a seat frame 10, a shell 20 attached to the seat frame 10, and a cushion material 30 attached so as to cover the surface of the shell 20. That is, it is a sheet having a so-called three-layer structure that is roughly divided into three members. These three members are covered with an unillustrated skin (seat cover).

  The seat frame 10 is a metal member that constitutes the skeleton of the vehicle seat 1. The shape of the seat frame 10 is not particularly limited. A portion constituting the seat cushion (seat portion) in the seat frame 10 is slidably attached to a slide rail provided on the floor surface of the vehicle. As a result, the entire vehicle seat 1 is slidably attached to the floor surface of the vehicle.

  The shell 20 is a plate-like member made of a hard material attached to the seat frame 10. A method for attaching the shell 20 to the seat frame 10 is not particularly limited. The surface of the shell 20 has a shape in which a central portion is depressed so as to support a person sitting on the vehicle seat 1. Specifically, the portion of the shell 20 that constitutes the seat cushion of the vehicle seat 1 has a central portion near the back that is recessed into a shape that matches the human buttock, and the outer portion in the width direction protrudes upward. (A so-called side support portion is formed). In addition, the shell 20 of the portion constituting the seat back (back portion) has a central portion recessed into a shape matching the human back, and the outer portion in the width direction protrudes forward (a so-called side support portion is formed). )

  As shown in the figure, a flat magnet 211 is provided on the surface of the shell 20 (three magnets 221 are provided in this embodiment). As shown in FIG. 1, in this embodiment, the magnet 211 provided on the seat back has a long shape extending in the vertical direction, and the magnet 211 provided on the seat cushion has a long shape extending in the front-rear direction. It is. The surface of the shell 20 and the surface of the magnet 221 are flush with each other (there is no step between them). Further, between these magnets 221, a concave portion 221 that is straightly recessed rearward is formed (in this embodiment, two concave portions 221 are formed). As shown in FIG. 1, in this embodiment, the recess 211 formed in the seat back has a long shape extending in the vertical direction, and the recess 211 formed in the seat cushion has a long shape extending in the front-rear direction. It is.

  The cushion material 30 is an elastically deformable soft member made of, for example, a foam, and is attached so as to cover the surface of the shell 20. That is, the cushion material 30 is located on the most surface side of the vehicle seat 1 (upper side if it is a seat cushion, front side if it is a seat back).

  As shown in the drawing, a flat plate-like magnetic body 311 is provided on the back surface of the cushion material 30 (three magnetic bodies 311 are provided in the present embodiment). Here, the “magnetic body 311” includes not only a metal material joined to the magnet 221 but also a magnet. The position of the magnetic body 311 is a position where the magnet 221 provided on the shell 20 and the magnetic body 311 provided on the cushion material 30 face each other when the cushion material 30 is positioned at a predetermined position with respect to the shell 20. is there. Therefore, in this embodiment, the magnetic body 311 provided in the seat back has a long shape extending in the up-down direction, and the magnet 311 provided in the seat cushion has a long shape extending in the front-rear direction. Moreover, the back surface of the cushion material 30 and the surface of the magnetic body 311 are flush with each other (there is no step between them). Furthermore, between these magnetic bodies 311, convex portions 321 projecting straight rearward are formed (in this embodiment, two convex portions 321 are formed). When the cushion material 30 is positioned at a predetermined position with respect to the shell 20, the position of the convex portion 321 enters the recess 221 formed in the shell 20 (engagement). Position). Therefore, in this embodiment, the convex part 321 formed in the seat back has a long shape extending in the vertical direction, and the convex part 321 formed in the seat cushion has a long shape extending in the front-rear direction.

  The cushion material 30 having such a configuration is attached to the shell 20 as follows. When the cushion material 30 is brought close to cover the surface of the shell 20, the magnet 221 and the magnetic body 311 (magnet) attract each other by magnetic force. Further, the convex portion 321 formed on the cushion material 30 tries to enter the concave portion 221 formed on the shell 20. If the relative positional relationship between the cushion material 30 and the shell 20 is such that the convex portion 321 goes straight into the concave portion 221, the surface of the shell 20 and the back surface of the cushion material 30 are brought into close contact with each other. The cushion material 30 and the shell 20 are joined to each other by a magnetic force.

  Thus, in the vehicle seat 1 according to the present embodiment, when the cushion material 30 is positioned with respect to the shell 20, the magnet 221 and the magnetic body 311 are joined, and the recess 221 formed in the shell 20. It will be in the state which the convex part 321 formed in the cushion material 30 engaged. That is, the state in which the cushion material 30 is in close contact with the shell 20 is maintained by magnetic force joining (not only the displacement of the cushion material 30 in the mounting direction (described later) is prevented), but also the relationship between the convex portion 321 and the concave portion 221. Accordingly, displacement (lateral displacement) of the cushion material 30 in the width direction is prevented. Since the cushion member 30 is often subjected to a load in the width direction when the person sitting on the seat changes its posture, the significance of preventing the skidding of the cushion member 30 is great.

  Moreover, since the cushion material 30 and the shell 20 are joined by magnetic force, it is easy to attach and detach. That is, since the positioning of the cushion material 30 with respect to the shell 20 becomes easy, the workability of the work of attaching the cushion material 30 to the shell 20 is also excellent.

  Next, the vehicle seat 2 according to the second embodiment will be described focusing on differences from the vehicle seat 2 according to the first embodiment.

  The vehicle seat 2 according to the second embodiment shown in FIG. 3 is different from the vehicle seat 1 according to the first embodiment in the shapes of the convex portions and the concave portions. Specifically, the convex portion 322 formed on the cushion material 30 has a shape protruding obliquely toward the rear, and the concave portion 222 formed on the shell 20 also matches the shape of the convex portion 322. It has a recessed shape that is inclined rearward. As described above, the cushion material 30 can be elastically deformed. Therefore, if the cushion material 30 is brought into close contact with the shell 20 while the convex portion 322 is deformed (see FIG. 3B), such an inclined shape is obtained. However, the convex portion 322 can be engaged with the concave portion 222.

  With this configuration, the convex portion 322 formed on the cushion material 30 in a state of being engaged with the concave portion 222 of the shell 20 is recessed in the mounting direction of the cushion material 30 with respect to the shell 20 as shown in FIG. (If the convex portion 321 and the concave portion 221 extend straight rearward as in the first embodiment, the convex portion 321 and the concave portion 221 do not overlap in the mounting direction). The “attachment direction” of the cushion member 30 with respect to the shell 20 here is the front-rear direction in the case of a seat back, and the vertical direction in the case of a seat cushion. In other words, the portion of the convex portion 322 engaged with the concave portion 222 that overlaps the concave portion 222 in the mounting direction is caught by the concave portion 222, so that the cushion material 30 (the convex portion 322) is removed from the shell 20 (the concave portion 222). It becomes difficult to come off. That is, the cushion material 30 is less likely to be displaced in the mounting direction.

  Thus, the vehicular seat 2 according to the second embodiment skillfully utilizes the fact that the cushion material 30 is an elastically deformable soft member (impossible if the cushion material 30 is a hard member). The inclined convex portion 322 and the concave portion 222 are engaged with each other. 3 has a shape in which the convex portion 322 and the concave portion 222 are inclined toward the inner side in the width direction, but the convex portion 322 and the concave portion 222 may be inclined to the outer side in the width direction.

  As a modification of the vehicle seat 2 according to the second embodiment, a configuration as shown in FIG. 4 is conceivable (a vehicle seat 2a according to a modification). As described above, the surface of the shell 20 has a shape in which the central portion is recessed so as to support a person sitting on the vehicle seat 2a. When viewed in cross section, the surface of the shell 20 is substantially bowl-shaped. The back surface of the cushion material 30 is also substantially bowl-shaped so that the cross section is along the surface of the shell 20. By using this point, a convex portion 322a that protrudes outward in the width direction from both sides (portions extending in the front-rear direction) is formed on the back surface of the cushion material 30, and in accordance with this, both sides (in the front-rear direction) are formed on the surface of the shell 20. If the concave portion 222a that is recessed outward in the width direction is formed and the convex portion 322a and the concave portion 222a are engaged with each other, the convex portion 322a and the concave portion 222a formed in the cushion material 30 are cushioned against the shell 20. Overlap in the direction of attachment of the material 30. That is, in the case of this modification, since almost all of the convex part 322a that has entered the concave part 222a is caught by the concave part 222a, the cushion material 30 (the convex part 322a) is difficult to come off from the shell 20 (the concave part 222a).

  Further, in the vehicle seat 2a according to this modified example, when the cushion material 30 is attached to the shell 20, when the cushion material 30 is brought close to the shell 20, the convex portions 322a of the cushion material 30 are formed on both sides (side support) of the shell 20. (See FIG. 4 (b)), and when it is pushed to the position where the recess 222a is formed, the elastic deformation is eliminated and the recess 222a enters (see FIG. 4 (c)). ). In other words, the convex portion 322a is naturally elastically deformed simply by inserting the cushion material 30 straight inside the shell 20, and when the cushion material 30 is inserted until it is in close contact with the shell 20, the elastic deformation of the convex portion 322a is eliminated and the convex portion. Since the 322a is configured to engage with the recess 222a, the attachment work of the cushion material 30 is easy.

  Next, the vehicle seat 3 according to the third embodiment will be described focusing on differences from the vehicle seat 3 according to the first embodiment.

  The vehicle seat 3 according to the third embodiment is different from the vehicle seat 1 according to the first embodiment in the positions where the magnets and the magnetic body are provided. Specifically, as shown in FIG. 5, the magnet 213 is provided so as to be positioned on the inner surface of the concave portion 221 formed in the shell 20, and the magnetic body 313 is formed of the convex portion 321 formed in the cushion material 30. It is provided to be located on the outer surface. 5 is a configuration in which the magnet 213 is provided on the bottom surface of the recess 221 and the magnetic body 313 is provided on the tip surface of the projection 321, but the magnet 213 is provided on the inner surface of the recess 221. The magnetic body 313 may be provided on the outer surface of the convex portion 321.

  Thus, if the convex part 321 to engage and the concave part 221 are the structures joined by the magnet 213 and the magnetic body 313 which were each provided, the convex part 321 will become difficult to remove | deviate from the recessed part 221. That is, the effect of preventing displacement (lateral displacement) of the cushion material 30 in the width direction with respect to the shell 20 is further enhanced.

  In addition, the attachment structure of the cushion material 30 with respect to the shell 20 concerning this 3rd embodiment can also be applied to the vehicle seat 3 concerning 2nd embodiment. That is, the convex portion 322 (322a) formed on the cushion material 30 is formed so as to overlap the concave portion 222 (222a) in the mounting direction of the cushion material 30 with respect to the shell 20, and the magnet 213 is formed on the inner surface of the concave portion 222 (222a). It is good also as a structure which provided the magnetic body 313 in the outer surface of the convex part 322 (322a).

  The structure for attaching the cushion member 30 to the shell 20 in the first embodiment to the third embodiment described above can be applied to only one of the seat cushion (sitting portion) and the seat back (backrest portion). It is also possible to apply to both as in this embodiment shown in FIG. In particular, since the seat cushion is easily slid by a load of a person sitting on the seat, it is significant to apply the mounting structure.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment at all, A various change is possible in the range which does not deviate from the summary of this invention.

  For example, in the above embodiment, the concave portion 221 (222, 222a) is formed in the shell 20 and the convex portion 321 (322, 322a) is formed in the cushion material 30. It is good also as a structure by which the convex part 321 (322,322a) was formed and the recessed part 221 (222,222a) was formed in the cushioning material 30. FIG. Also, both the concave portion 221 (222, 222a) and the convex portion 321 (322, 322a) are formed on one member, and the concave portion 221 (222, 222a) and the convex portion 321 (322, 322a) are formed on the other member. It is good also as a structure in which both the convex part 321 (322,322a) to engage and the recessed part 221 (222,222a) were formed.

  Moreover, in the said embodiment, the recessed part 221 (222,222a) formed in the shell 20, the convex part 321 (322,322a) formed in the cushion material 30, the magnet 211 (213) provided in the shell 20, and the cushion It has been described that the magnetic body 311 (313) provided on the material 30 has a long shape extending in the vertical direction if it is a seat back and extending in the front and rear direction if it is a seat cushion. The magnetic body may have a long shape extending in the width direction (vehicle seat 1 ′ shown in FIG. 6). Moreover, it is good also as a recessed part and convex part of a dot shape (a square shape or planar shape whose plane shape is near square), a magnet, or a magnetic body.

  In the above embodiment, it has been described that the shell 20 is provided with the magnet 211 (213) and the cushion member 30 is provided with the magnetic body 311 (313). However, the shell 20 has the magnetic body 311 (313). ), And the cushion material 30 may be provided with the magnet 211 (213). Further, both the magnet 211 (213) and the magnetic body 311 (313) are provided on one member, and the magnetic body 311 is joined to the magnet 211 (213) and the magnetic body 311 (313) by magnetic force on the other member. (313) and a magnet 211 (213) may be provided.

  In addition, the numbers of the magnets 211 (213) and the magnetic bodies 311 (313), the concave portions 221 (222, 222a), and the convex portions 321 (322, 322a) in the above embodiment can be changed as appropriate. If the number is increased to such an extent that the ease of attaching and detaching the cushion material 30 to the shell 20 (the workability of attaching the cushion material 30) is not significantly deteriorated, the effect of preventing the displacement of the cushion material 30 with respect to the shell 20 is enhanced. Good.

1 (2, 2a, 3) Vehicle seat 10 Seat frame 20 Shell 211 (213) Magnet 221 (222, 222a) Recess 30 Cushion material 311 (313) Magnetic body 321 (322, 322a) Protrusion

Claims (3)

In a vehicle seat comprising: a shell attached to a seat frame; and a cushion material attached so as to cover the surface of the shell;
One of the front surface of the shell and the back surface of the cushion material is provided with a magnet, and a concave portion or a convex portion,
The other of the front surface of the shell and the back surface of the cushion material is engaged with the magnetic body facing the magnet and the concave portion or the convex portion when the cushion material is positioned at a predetermined position with respect to the shell. A vehicle seat characterized in that a convex or concave portion is provided.   The convex portion provided on the shell or the cushion material overlaps with a concave portion engaged with the convex portion in an attaching direction of the cushion material with respect to the shell, and the overlapping portion is caught by the concave portion. The vehicle seat according to claim 1.   The vehicle seat according to claim 1, wherein the magnet and the magnetic body are provided so as to be positioned on an inner surface of the concave portion or an outer surface of the convex portion.

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