JP7302679B2 - vehicle seat - Google Patents

Description

The present disclosure relates to vehicle seats.

As disclosed in Japanese Patent No. 3690228 (Patent Document 1), ISO-FIX is known as a method for fixing a child seat to a vehicle seat. In the ISO-FIX system, a child seat is provided with a pair of connectors and a vehicle seat is provided with a pair of attachments. A pair of fixtures are arranged, for example, between the seat cushion and the seat back. The interval in the seat width direction between the pair of fixtures is defined by ISO (International Organization for Standardization).

Japanese Patent No. 3690228

Each of the pair of fixtures disclosed in Patent Document 1 has an engaging portion that can be engaged with the connector of the child seat and a pair of legs provided at both ends of the engaging portion. It has a substantially U-shaped shape. A rod-shaped member extending in the seat width direction is provided below the seat back, and the pair of leg portions are welded to this rod-shaped member. The center position in the seat width direction between the portions of the pair of legs that are welded to the rod-like member coincides with the center position of the engaging portion in the same direction.

As described above, the spacing in the seat width direction between a pair of fixtures is defined by ISO. Since the fixture disclosed in Patent Document 1 has a configuration in which the above-mentioned center positions match each other, consideration should be given between the fixture and the frame or the like provided around the fixture. Layout restrictions are large. Therefore, for example, even if an attempt is made to change the design interval between the left and right side frames of the seat frame, the fixture disclosed in Patent Document 1 is used to flexibly accommodate such design changes. It was difficult to respond.

An object of the present disclosure is to provide a vehicle seat having a configuration that can flexibly respond to design changes.

A vehicle seat according to the present disclosure is a vehicle seat to which a child seat can be attached, comprising a seat cushion and a seat back, a seat frame forming a skeleton of the seat back and the seat cushion, and fixed to the seat frame, a first fixture and a second fixture that are spaced apart in the seat width direction, the first fixture and the second fixture being connected to the first connector and the second fixture provided on the child seat; The first fitting has a first end and a second end and is spaced apart from the seat frame. and a first base fixed to the seat frame, wherein the first end and the second end are positioned opposite to each other in the seat width direction. a first leg portion extending to connect the first root portion and the first end portion; a second root portion fixed to the seat frame; and a second leg portion extending to connect the second end portion, the center position of the first engaging portion in the seat width direction, the first root portion, and the second root portion and the center position in the seat width direction between the two parts is displaced from each other in the seat width direction.

In the vehicle seat, preferably, the first leg portion includes a first linear portion extending from a position of the first root portion in a direction orthogonal to the seat width direction, and and a first extending portion extending in a direction intersecting the orthogonal direction from a portion located on the opposite side of the first root portion.

In the vehicle seat, preferably, the second leg portion includes a second straight portion extending from a position of the second root portion in a direction parallel to the first straight portion, and a second straight portion. and a second extending portion extending in a direction intersecting the orthogonal direction from a portion of the second root portion positioned opposite to the second root portion.

In the vehicle seat, preferably, the first extending portion extends away from the second fixture as the distance from the first root portion increases, and the second extending portion also extends away from the second fitting. 2. It extends away from the second fixture as it goes away from the root portion.

In the vehicle seat, preferably, the first extending portion extends in an oblique direction crossing the seat front-rear direction and the seat width direction, and the second extending portion extends across the seat width. It extends in a direction parallel to the direction.

In the vehicle seat, preferably, the second fixture has a second engaging portion, and the second engaging portion is provided at a position spaced apart from the seat frame and engaged with the second connector. The center position in the seat width direction between the first engaging portion and the second engaging portion and the center position in the seat width direction of the seat cushion are, in the seat width direction, deviated from each other.

According to the vehicle seat having the above configuration, the center position in the seat width direction of the first engaging portion and the center position in the seat width direction between the first root portion and the second root portion are aligned in the seat width direction. , it is possible to flexibly respond to design changes of the seat body.

1 is a perspective view showing a vehicle seat 100 according to an embodiment; FIG. Fig. 2 is a front view showing a cushion frame 5, a back frame 6, a first fixture 10 and a second fixture 20 provided in the vehicle seat 100 according to the embodiment; Fig. 2 is a front view showing a cushion frame 5, a back frame 6, a first fixture 10 and a second fixture 20 provided in a vehicle seat in a comparative example; Fig. 10 is a front view showing a cushion frame 5, a back frame 6, a first fixture 10, and a second fixture 20 provided in the vehicle seat 100 in a modified example of the embodiment;

Hereinafter, an embodiment of a vehicle seat will be described with reference to the drawings. In the following description, the same reference numerals are given to the same parts and equivalent parts, and redundant description may not be repeated.

(Vehicle seat 100)
FIG. 1 is a perspective view showing a vehicle seat 100 according to an embodiment. As shown in FIG. 1 , a vehicle seat 100 includes a seat cushion 1 , a seat back 2 , a headrest 3 , a seat frame 4 , a first fixture 10 and a second fixture 20 .

The seat frame 4 has a cushion frame 5 and a back frame 6 and constitutes the skeleton of the seat cushion 1 and the seat back 2 . The cushion frame 5 is provided inside the seat cushion 1 and comprises side frames 5A, 5B, a front panel 5T, and a rear pipe 5P. The back frame 6 is provided inside the seat back 2 and comprises side frames 6A, 6B, an upper panel 6T, and a lower panel 6P.

The rear pipe 5P extends along the seat width direction, and the first fixture 10 and the second fixture 20 are welded to the rear pipe 5P. The first fixture 10 and the second fixture 20 are arranged with an interval in the seat width direction. The lower panel 6P also extends along the seat width direction. The first fixture 10 and the second fixture 20 may be welded to the lower panel 6P.

The first fixture 10 and the second fixture 20 are configured to be engageable with a first connector 31 and a second connector 32 provided on the child seat 200, respectively. FIG. 2 is a front view showing the cushion frame 5, the back frame 6, the first fixture 10, and the second fixture 20 provided in the vehicle seat 100 according to the embodiment.

(First fixture 10)
As shown in FIG. 2, the first fixture 10 includes a first engagement portion 10T, a first leg portion 11, and a second leg portion 12. As shown in FIG. The first engaging portion 10T has a cylindrical shape, is provided at a position away from the seat frame 4 (here, the rear pipe 5P), and extends along the seat width direction. The first engaging portion 10T has a first end portion 10A and a second end portion 10B, and the first end portion 10A and the second end portion 10B are positioned opposite to each other in the seat width direction. The first engaging portion 10T can be engaged with a first connector 31 provided on the child seat 200 (FIG. 1).

The first leg portion 11 has a first extension portion 11A, a first straight portion 11B, and a first root portion 11R. The first root portion 11R is a portion of the first leg portion 11 that is fixed to the seat frame 4 (here, the rear pipe 5P). It extends to connect the The first straight portion 11B extends in a direction orthogonal to the seat width direction from the position of the first root portion 11R.

The first extension portion 11A intersects the orthogonal direction (the direction orthogonal to the seat width direction) from a portion of the first straight portion 11B that is located on the side opposite to the first root portion 11R. extending in the direction of The first extension portion 11A extends away from the second fixture 20 as it goes away from the first root portion 11R. The first extending portion 11A extends in an oblique direction crossing the seat front-rear direction and the seat width direction. An end portion of the first extension portion 11A opposite to the first linear portion 11B is connected to the first end portion 10A of the first engaging portion 10T.

The second leg portion 12 has an upper straight portion 12A, a second extension portion 12B, a second straight portion 12C, and a second root portion 12R. The second root portion 12R is a portion of the second leg portion 12 that is fixed to the seat frame 4 (here, the rear pipe 5P). It extends to connect the The second straight portion 12C extends in a direction parallel to the first straight portion 11B from the position of the second root portion 12R.

The second extending portion 12B intersects the orthogonal direction (the direction orthogonal to the seat width direction) from a portion of the second straight portion 12C that is located on the side opposite to the second root portion 12R. extending in the direction of The second extension portion 12B extends away from the second fixture 20 as it goes away from the second root portion 12R. The second extending portion 12B extends in a direction parallel to the seat width direction.

The upper straight portion 12A extends in a direction orthogonal to the seat width direction from a portion of the second extending portion 12B located on the opposite side of the second straight portion 12C. An end portion of the upper straight portion 12A opposite to the second extension portion 12B is connected to the second end portion 10B of the first engaging portion 10T.

The first engaging portion 10T has a center position C10 in the seat width direction. The center position C10 is a portion of the first engaging portion 10T which is located exactly at the center between the first end portion 10A and the second end portion 10B. In the present embodiment, the center position C10 of the first engaging portion 10T and the center position C1 in the seat width direction between the first root portion 11R and the second root portion 12R are offset from each other in the seat width direction. ing. The center position C10 is provided at a position shifted outward in the seat width direction from the center position C1 by the dimension P1.

(Second fixture 20)
The second fixture 20 includes a second engaging portion 20T, a first leg portion 21, and a second leg portion 22, and has a generally U-shaped shape as a whole. The second engaging portion 20T has a columnar shape, is provided at a position away from the seat frame 4 (here, the rear pipe 5P), and extends along the seat width direction. The second engaging portion 20T has a first end portion 20A and a second end portion 20B, and the first end portion 20A and the second end portion 20B are positioned opposite to each other in the seat width direction. The second engaging portion 20T can be engaged with a second connector 32 provided on the child seat 200 (FIG. 1).

The first leg portion 21 has a first root portion 21R. The first root portion 21R is a portion of the first leg portion 21 that is fixed to the seat frame 4 (here, the rear pipe 5P). 20A. The first leg portion 21 extends in a direction orthogonal to the seat width direction from the position of the first root portion 21R. An end portion of the first leg portion 21 opposite to the first root portion 21R is connected to the first end portion 20A of the second engaging portion 20T.

The second leg portion 22 has a second root portion 22R. The second root portion 22R is a portion of the second leg portion 22 that is fixed to the seat frame 4 (here, the rear pipe 5P). 20B. The second leg portion 22 extends in a direction orthogonal to the seat width direction from the position of the second root portion 22R. The end portion of the second leg portion 22 opposite to the second root portion 22R is connected to the second end portion 20B of the second engaging portion 20T.

The second engaging portion 20T has a center position C20 in the seat width direction. The center position C20 is a portion of the second engaging portion 20T that is located exactly at the center between the first end portion 20A and the second end portion 20B. In the present embodiment, the center position C20 and the center position C2 in the seat width direction between the first root portion 21R and the second root portion 22R are provided at the same position in the seat width direction.

The first engaging portion 10T of the first fixture 10 and the second engaging portion 20T of the second fixture 20 are arranged with a gap W in the seat width direction. A center position C3 is defined between the first engaging portion 10T and the second engaging portion 20T. The center position C3 is positioned exactly at the center between the first engaging portion 10T and the second engaging portion 20T in the seat width direction.

(back frame 6)
The side frames 6A and 6B of the back frame 6 are arranged with an interval A in the seat width direction. A center position C4 is defined between the side frames 6A and 6B. The center position C4 is positioned exactly at the center of the side frames 6A and 6B in the seat width direction, and corresponds to the center position of the seat cushion 1 in the seat width direction. In the present embodiment, the center position C3 in the seat width direction between the first engaging portion 10T and the second engaging portion 20T and the center position C4 in the seat width direction of the seat cushion 1 are are offset from each other in The center positions C3 and C4 are offset from each other in the seat width direction by a dimension Q1.

In the vehicle seat 100 configured as described above, the first connector 31 and the second connector 32 of the child seat 200 (Fig. 1) are engaged with the first fixture 10 and the second fixture 20, respectively. Therefore, the child seat 200 can be easily attached to the vehicle seat 100 . Actions and effects obtained from the vehicle seat 100 will be described in detail below in comparison with comparative examples.

[Comparative example]
FIG. 3 is a front view showing a cushion frame 5, a back frame 6, a first fixture 10, and a second fixture 20 provided in a vehicle seat in a comparative example. The embodiment differs from the comparative example in the following points. In the comparative example, the first fixture 10 includes a first engaging portion 10T, a first leg portion 11 and a second leg portion 12, and has a generally U-shaped shape as a whole. The first fixture 10 has the same configuration as the second fixture 20 .

The first leg portion 11 extends in a direction orthogonal to the seat width direction from the position of the first root portion 11R. An end portion of the first leg portion 11 opposite to the first root portion 11R is connected to the first end portion 10A of the first engaging portion 10T. The second leg portion 12 extends in a direction orthogonal to the seat width direction from the position of the second root portion 12R. The end portion of the second leg portion 12 opposite to the second root portion 12R is connected to the second end portion 10B of the first engaging portion 10T.

In the comparative example, the center position C10 of the first engaging portion 10T and the center position C1 in the seat width direction between the first root portion 11R and the second root portion 12R are provided at the same position in the seat width direction. It is On the other hand, also in the comparative example, the first engaging portion 10T of the first fixture 10 and the second engaging portion 20T of the second fixture 20 are arranged with a gap W in the seat width direction. A center position C3 is defined between the first engaging portion 10T and the second engaging portion 20T.

The side frames 6A and 6B of the back frame 6 are arranged with an interval B in the seat width direction. A center position C4 is defined between the side frames 6A and 6B. The center position C4 is positioned exactly at the center of the side frames 6A and 6B in the seat width direction, and corresponds to the center position of the seat cushion 1 in the seat width direction. In the comparative example, the central position C3 between the first engaging portion 10T and the second engaging portion 20T and the central position C4 of the seat cushion 1 in the seat width direction are provided at the same position in the seat width direction. there is

[Comparison between Embodiment and Comparative Example]
In the case of the comparative example (FIG. 3), the side frames 6A and 6B of the back frame 6 are arranged with the space B in the seat width direction in order to arrange the first fixture 10 and the second fixture 20 with the space W therebetween. are placed in an empty space. In the case of the embodiment (FIG. 2), the side frames 6A and 6B of the back frame 6 are spaced apart in the seat width direction so that the first fixture 10 and the second fixture 20 are arranged with the spacing W therebetween. are placed with a space between them. Interval A can be set smaller than interval B for the reasons described below.

As mentioned at the beginning, the space W in the seat width direction between the first fixture 10 and the second fixture 20 is defined by ISO. A range in which the first fixture 10 and the second fixture 20 can be arranged is defined based on the configuration of the side frames 6A and 6B, and the first fixture 10 and the second fixture 20 are arranged within the range. In the case of the comparative example, since the first fixture 10 employs a configuration in which the center positions C1 and C10 match, the first fixture 10 and the side frame 6B provided around the first fixture 10 Layout restrictions to be considered between are large.

That is, in order to narrow the interval B in the configuration of the comparative example shown in FIG. 3, it is conceivable to dispose the side frames 6A and 6B inside the positions shown in FIG. However, if the spacing between the side frames 6A and 6B is narrowed while maintaining the spacing W defined by ISO, the side frame 6A may interfere with the second fixture 20, or the side frame 6B may interfere with the first fixture. 10, the design change of the side frames 6A and 6B may be required, and such a design change is not easy.

On the other hand, in the configuration of the embodiment shown in FIG. 2, it is possible to adopt the interval A narrower than the interval B, for example. In the case of the embodiment, the center position C10 of the first engaging portion 10T and the center position C1 in the seat width direction between the first root portion 11R and the second root portion 12R are mutually aligned in the seat width direction. out of alignment. The center position C10 is provided at a position shifted outward in the seat width direction from the center position C1 by the dimension P1.

For example, the space A can be achieved by arranging the side frame 6B at a position closer to the first fixture 10 . Even if the side frame 6B is arranged at a position closer to the first fixture 10, the second root portion 12R of the second leg portion 12 and the first root portion 11R of the first leg portion 11 are connected to the first engaging portion 10T. is arranged at a position closer to the inside in the seat width direction than the position of . Even if the side frame 6B is arranged at a position closer to the inside while maintaining the interval W defined by ISO, the increased possibility of the side frame 6B interfering with the first fixture 10 is effectively suppressed. be. As a result, the interval A can be set smaller than the interval B.

In particular, the first extension portion 11A extends away from the second fixture 20 as it goes away from the first root portion 11R. In other words, the first extending portion 11A extends outward in the seat width direction as the distance from the first root portion 11R increases. Similarly, the second extension portion 12B extends away from the second fixture 20 (positioned on the outside in the seat width direction) as it moves away from the second root portion 12R. are doing.

Although these configurations are not essential, according to these configurations, the first straight portion 11B, the first root portion 11R, the second straight portion 12C, and the second root portion 12R are shifted toward the inside in the seat width direction. Therefore, even if the side frame 6B is arranged at a position closer to the inside, the possibility of the side frame 6B interfering with the first fixture 10 is effectively suppressed from increasing. As a result, the interval A can be set smaller than the interval B.

In order to realize the configuration in which the center positions C10 and C1 are shifted in the seat width direction, for example, the first root portion 11R is fixed to the rear pipe 5P and the second root portion 12R is fixed to the side frame 6B. techniques may be employed. In contrast, in the present embodiment, since both the first root portion 11R and the second root portion 12R of the first fixture 10 are fixed to the same member, the rear pipe 5P, the first root portion Compared to the case where 11R and the second root portion 12R are fixed so as to straddle separate members, it is possible to increase the positional accuracy of the first engaging portion 10T, and additional parts such as reinforcing brackets are unnecessary. is.

As described above, in the first fixture 10 of the present embodiment, the first leg portion 11 has the first linear portion 11B. The first straight portion 11B extends in a direction orthogonal to the seat width direction from the position of the first root portion 11R. Although this configuration is not essential, by adopting this configuration, the first leg portion 11 can be easily welded to the rear pipe 5P while the first leg portion 11 is positioned with respect to the rear pipe 5P with high accuracy. It is possible.

As described above, in the first fixture 10 of the present embodiment, the second leg portion 12 has the second linear portion 12C. The second straight portion 12C extends from the position of the second root portion 12R in a direction parallel to the first straight portion 11B (a direction orthogonal to the seat width direction). Although this configuration is not essential, by adopting this configuration, the second leg portion 12 can be easily welded to the rear pipe 5P while the second leg portion 12 is positioned with high accuracy with respect to the rear pipe 5P. It is possible.

As described above, in the present embodiment, the first extension portion 11A extends in an oblique direction crossing the seat front-rear direction and the seat width direction. This configuration is not essential, and for example, the first fixture 10 may be configured like the first fixture 10 shown in FIG.

FIG. 4 is a front view showing the cushion frame 5, the back frame 6, the first fixture 10 and the second fixture 20 provided in the vehicle seat 100 according to the modification of the embodiment. The first fixture 10 shown in FIG. 4 includes a first engaging portion 10T, a first leg portion 11 and a second leg portion 12. The first leg portion 11 extends from the position of the first root portion 11R to the seat. It extends in a direction perpendicular to the width direction. An end portion of the first leg portion 11 opposite to the first root portion 11R is connected to the first end portion 10A of the first engaging portion 10T. The length of the first engaging portion 10T shown in FIG. 4 is longer than the length of the first engaging portion 10T shown in FIG.

Also in the configuration shown in FIG. 4, the center position C10 of the first engaging portion 10T and the center position C1 in the seat width direction between the first root portion 11R and the second root portion 12R are mutually aligned in the seat width direction. out of alignment. Even if the side frame 6B is arranged at a position closer to the inside while maintaining the interval W defined by ISO, the possibility of the side frame 6B interfering with the first fixture 10 increases in the case of the above comparative example. can be suppressed more effectively than

Here, the center position C10 of the first engaging portion 10T shown in FIG. 4 is provided at a position shifted outward in the seat width direction from the center position C1 by the dimension P2. Dimension P2 shown in FIG. 4 is smaller than dimension P1 shown in FIG. In the configuration shown in FIG. 2, by providing the first extending portion 11A in the first leg portion 11, the center position C10 of the first engaging portion 10T is changed to the center position of the first engaging portion 10T shown in FIG. Compared to C10, it can be arranged on the outside in the seat width direction. In other words, in the case of FIG. 4, since the first leg 11 is not provided with the first extending portion 11A, the center position C10 of the first engaging portion 10T is the first engaging portion 10T shown in FIG. is arranged inside in the seat width direction compared to the center position C10.

Therefore, in order to secure the space W, the first fixture 10 shown in FIG. 4 as a whole needs to be arranged further outside in the seat width direction than the configuration shown in FIG. In the configuration shown in FIG. 4, the side frames 6A and 6B of the back frame 6 are arranged with an interval D in the seat width direction. A center position C3 in the seat width direction between the first engaging portion 10T and the second engaging portion 20T and a center position C4 in the seat width direction of the seat cushion 1 are shifted from each other in the seat width direction by a dimension Q2. is provided.

Dimension Q2 shown in FIG. 4 is smaller than dimension Q1 shown in FIG. Since the first leg portion 11 shown in FIG. 2 is provided with the first extending portion 11A, the interval A shown in FIG. 2 can be set to a smaller value than the interval D shown in FIG. . Therefore, according to the vehicle seat 100 having the configuration shown in FIG. 2, the space W specified by ISO can be provided between the first fixture 10 and the second fixture 20 in a narrower range. This has made it possible to construct narrower vehicle seats.

Although the embodiments have been described above, the above disclosure is illustrative in all respects and is not restrictive. The technical scope of the present invention is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope of equivalence to the scope of claims.

1 seat cushion, 2 seat back, 3 headrest, 4 seat frame, 5 cushion frame, 5A, 5B, 6A, 6B side frame, 5P rear pipe, 5T front panel, 6 back frame, 6P lower panel, 6T upper panel, 10 first installation 10A, 20A first end 10B, 20B second end 10T first engaging portion 11, 21 first leg 11A first extension portion 11B first straight portion 11R, 21R 1 root portion, 12, 22 second leg portion, 12A upward straight portion, 12B second extension portion, 12C second straight portion, 12R, 22R second root portion, 20 second fixture, 20T second engaging portion , 31 first connector, 32 second connector, 100 vehicle seat, 200 child seat, A, B, D, W spacing, C1, C2, C3, C4, C10, C20 center position, P1, P2, Q1, Q2 dimension.

Claims (6)

A vehicle seat to which a child seat can be attached,
a seat cushion and a seat back;
a seat frame forming a skeleton of the seat back and the seat cushion;
a first fixture and a second fixture fixed to the seat frame and spaced apart in the seat width direction;
The first fitting and the second fitting are configured to be engageable with a first fitting and a second fitting provided on the child seat, respectively,
The first fixture is
and having a first end and a second end spaced from the seat frame and engagable with the first connector, the first end and the second end being connected to the seat frame; a first engaging portion located on opposite sides in the seat width direction;
a first leg portion having a first root portion fixed to the seat frame and extending to connect the first root portion and the first end portion;
a second leg having a second root secured to the seat frame and extending to connect the second root and the second end;
The second leg is located outside the first leg in the seat width direction,
The second leg is
a second straight portion extending in a direction orthogonal to the seat width direction from the position of the second root portion;
A second extension extending in a direction parallel to the seat width direction and away from the second fixture from a portion of the second straight portion located on the opposite side of the second root portion. resides in and has
vehicle seat. The first leg is
a first straight portion extending in a direction parallel to the second straight portion from the position of the first root portion;
a first extension portion extending in a direction intersecting the orthogonal direction from a portion of the first straight portion located on the opposite side of the first root portion;
A vehicle seat according to claim 1 . The first extending portion extends away from the second fixture as the distance from the first root portion increases.
A vehicle seat according to claim 2. The first extending portion extends in an oblique direction crossing the seat front-rear direction and the seat width direction,
A vehicle seat according to claim 3. The second fixture has a second engaging portion,
The second engaging portion is provided at a position away from the seat frame and is engageable with the second connector,
A center position in the seat width direction between the first engaging portion and the second engaging portion and a center position of the seat cushion in the seat width direction are shifted from each other in the seat width direction,
A vehicle seat according to any one of claims 1 to 4. The seat frame has a cushion frame provided inside the seat cushion,
The cushion frame is
a pair of side frames extending in the longitudinal direction of the seat;
a front member extending along the seat width direction and connecting front end portions of the pair of side frames to each other;
a rear member extending along the seat width direction and connecting rear portions of the pair of side frames to each other;
Only a portion of the first engaging portion of the first fixture is positioned above one side frame of the pair of side frames when the vehicle seat is viewed from the front , and is positioned vertically arranged to overlap the one side frame with a space therebetween;
A vehicle seat according to any one of claims 1 to 5.

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