JP2014015092A - Attachment structure of seat cushion for rear seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment structure of a seat cushion which enables easy positioning of the seat cushion and improves the attachment workability.SOLUTION: An attachment structure 1 of a seat cushion is used for attaching a seat cushion 10 to a vehicle body 2. The vehicle body 2 includes a base bracket 20 and a vehicle side engagement fitting 23. The base bracket 20 includes an auxiliary wall part, and the seat cushion 10 includes a cushion side engagement part 12. The attachment structure 1 of the seat cushion is formed so that a tip 123 of the cushion side engagement part 12 is led to an opening 231 by placing the tip 123 in contact with the auxiliary wall part and moving the seat cushion 10.

Description

  The present invention relates to a structure for attaching a seat cushion for a rear seat constituting a rear seat of a vehicle.

  A rear seat in the vehicle includes a seat cushion on which an occupant is seated and a seat back disposed on the back surface of the occupant seated on the seat cushion. In sedan or coupe type vehicles, a rear seat that is directly fixed to a vehicle body without using a slide mechanism or the like is often used. Such a seat cushion of the rear seat has a lower surface fixed to the vehicle body, and includes a movement prevention structure for preventing the seat cushion from moving due to an impact at the time of a frontal collision.

As the movement preventing structure, for example, there is one shown in the seat cushion mounting structure of Patent Document 1. The movement prevention structure is configured by a vehicle-side engagement fitting disposed on the vehicle body and a cushion-side engagement portion disposed on the seat cushion.
The vehicle-side engagement fitting disposed on the vehicle body is formed by bending a plate material into a hat shape, and the hat-shaped opening side is joined to the vehicle body. The opening formed surrounded by the vehicle side engagement fitting and the vehicle body is configured so that the cushion side engagement portion can be inserted and arranged.

  The cushion side engaging portion is formed by bending a bar, and is disposed at the rear end portion of the seat cushion. One end of the cushion side engaging portion forms a hook portion bent into a substantially U shape. The other end of the cushion side engaging portion is connected to a frame member disposed inside the seat cushion.

  The movement preventing structure disclosed in Patent Document 1 has a cushion-side engagement portion inserted into an opening formed by a vehicle-side engagement fitting and a vehicle body, and the hook portion is engaged with the vehicle-side engagement fitting. By doing so, the seat cushion can be prevented from moving forward.

JP 2011-51475 A

However, the seat cushion mounting structure of Patent Document 1 has the following problems.
The above-mentioned movement preventing structure of the seat cushion mounting structure is such that the cushion side engagement portion extending rearward from the rear end portion of the seat cushion is inserted into the vehicle side engagement fitting disposed on the floor panel. Are engaged. Therefore, workability when attaching the seat cushion to the vehicle body tends to deteriorate.

  That is, since the seat cushion is integrally formed on both the left and right rear seats, it is relatively large and heavy. Compared to this, because the size of the cushion side engaging portion is small, while holding a large and heavy seat cushion, adjust the vertical, left and right, front and back positions of the small cushion side engaging portion, It is difficult to align with the opening. For this reason, it is difficult to perform the operation of inserting the cushion side engaging portion through the opening of the vehicle side engaging metal fitting, and the workability of attaching the seat cushion is likely to deteriorate.

  The present invention has been made in view of the above-described background, and an object of the present invention is to provide a seat cushion mounting structure that can easily align the seat cushion and improve the mounting workability.

One aspect of the present invention is a seat cushion mounting structure for mounting a seat cushion constituting a rear seat of a vehicle to a vehicle body,
The vehicle body includes a base bracket disposed behind the rear seat, and an annular vehicle-side engagement metal fitting extending upward from the base bracket,
The base bracket has an auxiliary wall portion that covers a part of the vehicle side engagement metal fitting on the lower side of the opening,
The seat cushion has a cushion side engaging portion disposed behind the seat cushion,
The cushion-side engagement portion is configured to be inserted through the opening of the vehicle-side engagement fitting in a state in which the seat cushion is attached, and a distal end portion is located on the rear side of the upper end of the vehicle-side engagement fitting. And
When attaching the seat cushion, the tip of the cushion side engaging portion can be brought into contact with the auxiliary wall, and the tip is in contact with the auxiliary wall. A seat cushion mounting structure, wherein the seat cushion is configured to be guided to the opening of the vehicle-side engagement fitting while sliding the tip portion on the auxiliary wall by moving the seat cushion. (Claim 1).

  As described above, the seat cushion mounting structure moves the seat cushion toward the opening of the vehicle-side engagement fitting with the cushion-side engagement portion and the auxiliary wall portion in contact with each other. Thus, the seat cushion is guided toward a fixed position with the vehicle body. Thereby, the attachment workability | operativity of the said seat cushion can be improved.

  That is, by bringing the cushion side engagement portion into contact with the auxiliary wall portion, the rear side of the seat cushion is supported by the auxiliary wall portion, and the posture of the seat cushion can be stabilized. Therefore, it is easy to confirm the positional relationship between the vehicle-side engagement fitting and the cushion-side engagement portion, and the position adjustment of both can be easily performed. And after adjusting both position, the said seat cushion can be moved to a fixed position by moving the said seat cushion so that the said cushion side engaging part may go to the said opening part.

  As a result of moving the seat cushion, at the fixed position, the cushion side engaging portion is inserted and arranged in the vehicle side engaging bracket, and the tip end portion of the cushion side engaging portion is the vehicle side engaging member. It will be arranged at a position on the rear side of the upper end of the fitting. Thus, by stabilizing the posture of the seat cushion, it is possible to improve the workability of attaching the seat cushion.

  In addition, when the cushion side engaging portion moves along the auxiliary wall portion to the opening portion, a force that the cushion side engaging portion pushes the auxiliary wall portion is generated, and the cushion side engaging portion is generated. The part receives a reaction force from the auxiliary wall part. When the cushion side engaging portion reaches the opening, the cushion side engaging portion is inserted inside the opening. At this time, the reaction force transmitted to the seat cushion does not occur because the tip of the cushion side engaging portion is separated from the auxiliary wall portion. Therefore, an operator who attaches the seat cushion can recognize that the cushion side engaging portion has reached the opening. Thereby, the operator can recognize that the seat cushion is correctly attached, and can reliably attach the seat cushion to the vehicle body.

  As described above, according to the mounting structure of the seat cushion, the positioning of the seat cushion can be easily performed and the mounting workability can be improved.

FIG. 3 is an explanatory diagram illustrating a seat cushion mounting structure according to the first embodiment. Explanatory drawing which shows the base bracket in Example 1. FIG. Explanatory drawing which shows the state which made the cushion side engaging part contact | abut to a bay bracket in Example 1. FIG. Explanatory drawing which shows the attachment process of the seat cushion in Example 1. FIG. Explanatory drawing which shows the state in which attachment of the seat cushion in Example 1 was completed. Explanatory drawing which shows the attachment structure of the seat cushion in Example 2. FIG. The partial enlarged view which shows the base bracket in Example 2. FIG.

  In the seat cushion mounting structure, the auxiliary wall portion may extend from the base bracket to the vehicle-side engagement fitting side. In this case, the position of the vehicle-side engagement fitting can be more easily confirmed by using the auxiliary wall portion as a mark. Therefore, it is possible to easily align the cushion side engagement portion and the vehicle side engagement fitting, and it is possible to further improve the seat cushion attachment workability.

  Further, the auxiliary wall portion may have a lower auxiliary wall portion extending downward from the base bracket. In this case, the cushion side engaging portion can be prevented from entering below the base bracket. Moreover, since the contactable range of the cushion side engagement portion is expanded, the cushion side engagement portion and the vehicle side engagement fitting can be more easily aligned. Thereby, the attachment workability | operativity of the said seat cushion can be improved more.

  Further, the auxiliary wall portion may be inclined rearward so that the upper end portion thereof is disposed at a retracted position (claim 4). In this case, the cushion side engaging portion can be smoothly moved on the auxiliary wall portion. Thereby, the movement of the seat cushion can be made easier, and the attachment workability of the seat cushion can be improved.

  The auxiliary wall portion may have a concave groove portion formed by retreating a part of the auxiliary wall portion to the back surface side. In this case, the position of the seat cushion in the left-right direction can be regulated by moving the cushion side engaging portion in the concave groove portion. Thereby, the attachment workability | operativity of the said seat cushion can be improved more.

  Further, a vehicle mounting component may be arranged behind the auxiliary wall (claim 6). In this case, it is possible to prevent the cushion side engaging portion from interfering with or being caught by a vehicle mounting component. Thereby, damage to a mounting component and the said cushion side engaging part can be prevented. Examples of the mounted parts include various ECUs, electrical wiring, and vehicle bodies.

  The base bracket may have a child seat fixing bracket for fixing the child seat (claim 7). In this case, the child seat fixing bracket and the vehicle side engagement bracket can be integrated into the base bracket. Thereby, the structure can be simplified and the work can be facilitated.

Example 1
The Example concerning the attachment structure of a seat cushion is described with reference to FIGS.
As shown in FIG. 1, the seat cushion attachment structure 1 is for attaching a seat cushion 10 constituting a rear seat 100 of a vehicle to a vehicle body 2.

  As shown in FIGS. 1 and 5, the vehicle body 2 includes a base bracket 20 disposed behind the rear seat 100 and an annular vehicle-side engagement fitting 23 extending upward from the base bracket 20. Have. The base bracket 20 has an auxiliary wall portion 220 that covers a part of the vehicle-side engagement fitting 23 on the lower side of the opening 231, and the seat cushion 10 is a cushion-side engagement portion disposed on the rear side thereof. 12.

  As shown in FIGS. 1 and 5, the cushion-side engagement portion 12 is inserted through the opening 231 of the vehicle-side engagement fitting 23 in the attached state of the seat cushion 10, and the distal end portion 123 is the vehicle-side engagement fitting 23. It is comprised so that it may be located in the back side of an upper end.

  As shown in FIGS. 3 and 4, the seat cushion attachment structure 1 is capable of bringing the distal end portion 123 of the cushion side engagement portion 12 into contact with the auxiliary wall portion 220 when the seat cushion 10 is attached. In addition, the seat cushion mounting structure 1 is configured such that the seat cushion 10 is moved in a state where the front end portion 123 is in contact with the auxiliary wall portion 220, so that the front end portion 123 is slid on the auxiliary wall portion 220 and the vehicle side engagement. It is configured to be guided to the opening 231 of the fitting 23.

This will be described in more detail below.
As shown in FIGS. 1 and 5, in this example, the rear seat 100 of the vehicle is directly fixed to the vehicle body 2 without using a slide mechanism or the like.
The rear seat 100 is disposed on the floor panel 200 that forms the floor surface of the vehicle body 2. The floor panel 200 includes a cushion disposing portion 201 to which a lower portion of the seat cushion 10 is fixed, a bracket disposing portion 202 inclined so as to rise rearward behind the cushion disposing portion 201, and a bracket disposing portion. 202 has a gently inclined portion 203 further extending from the rear end of 202. The inclination angle of the gentle inclination part 203 is formed more gently than the inclination angle of the bracket disposition part 202. Note that the cushion disposing portion 201, the bracket disposing portion 202, and the gently inclined portion 203 are formed at positions corresponding to the right seat and the left seat in the rear seat 100, respectively.

  As shown in FIGS. 3 to 5, the gently inclined portion 203 is provided with the electrical wiring 3 that is one of the on-vehicle equipment. The electrical wiring 3 is arranged along the lateral direction of the vehicle in the vicinity of the front end portion of the gently inclined portion 203, and is fixed to the gently inclined portion 203 by a fixing clip (not shown).

As shown in FIGS. 2 and 3, the base bracket 20 disposed in the bracket disposition portion 202 is disposed on the bracket main body portion 21 on which the vehicle-side engagement metal fitting 23 is disposed, and on the left and right ends of the bracket main body portion 21. Bracket connecting portions 25 and 26 are provided.
The bracket body 21 is formed by punching a material on a flat plate and then bending it. The bracket main body 21 has a bracket arrangement portion 22 where the vehicle-side engagement fitting 23 is disposed, and an interval between the bracket arrangement portion 22 that gradually increases downward from the left and right ends of the bracket arrangement portion 22. It has a pair of inclined leg parts 24 extended.

As shown in FIG. 2, the metal fitting disposition part 22 has an auxiliary wall part 220 extending from the metal fitting disposition part 22. It is joined.
The vehicle-side engagement fitting 23 is formed by bending a cylindrical bar, and extends at an upper end 232 arranged along the horizontal direction and inclined downward from the upper end 232 toward the front side. A pair of parallel leg portions 233 provided and a connection portion 234 extending forward from the parallel leg portion 233 are provided.

  The vehicle-side engagement metal fitting 23 is joined by welding the connection portion 234 to the back surface of the metal fitting arrangement portion 22, and the vehicle-side engagement metal fitting 23 and the metal fitting arrangement portion 22 are fixed integrally. Between the side engagement metal fitting 23 and the metal fitting disposing portion 22, an opening 231 surrounded by both is formed. Further, in the state where the base bracket 20 is fixed to the floor panel 200, the inclination angle of the vehicle-side engagement metal fitting 23 is set to be larger than the inclination angle of the metal fitting disposing portion 22. Note that the inclination angle of the vehicle-side engagement metal fitting 23 can be made smaller than or equal to the inclination angle of the metal fitting arrangement portion 22.

  As shown in FIGS. 2 and 3, the auxiliary wall portion 220 included in the metal fitting disposition portion 22 is formed at a position corresponding to the vehicle-side engagement metal fitting 23. The auxiliary wall 220 is formed so as to cover a part of the opening side 231 of the vehicle side engagement fitting 23 on the lower side at an inclination angle along the vehicle side engagement fitting 23. Further, the auxiliary wall portion 220 is formed so as to cover the entire width of the vehicle-side engagement fitting 23 in the lateral direction. In the extending direction of the vehicle-side engagement fitting 23, the auxiliary wall portion 220 is approximately about the lower side of the opening 231. It is formed so as to cover a one-third range. In this example, since the metal fitting disposing portion 22 and the auxiliary wall portion 220 are formed continuously, the metal fitting disposing portion 22 can be used as a part of the auxiliary wall portion 220.

As shown in FIG. 2, the bracket connecting portions arranged at both ends of the bracket main body portion 21 include an inner connecting portion 25 joined to an end portion arranged at an inner position in the lateral direction of the vehicle interior, and an outer connecting portion. It consists of the outer connection part 26 joined to the edge part distribute | arranged to a position.
The inner connecting portion 25 includes a connecting main body portion 251 and a child seat engagement fitting 253 joined to the connecting main body portion 251.

As shown in FIG. 2, the connection main body 251 has a substantially rectangular outer shape in plan view, and has a bolt insertion hole 252 in which a bolt can be inserted and arranged.
The child seat engagement fitting 253 disposed at the rear end portion of the inner connecting portion 25 is formed in a substantially U shape by bending a columnar bar, and both end sides thereof are connected to the inner connecting portion 25. It is arranged towards. The child seat engagement fitting 253 is configured to be engageable with an engagement portion of a child seat (not shown).

As shown in FIG. 2, the outer connecting portion 26 includes a wall portion side fixing portion 263 arranged along a floor wall portion erected upward from the floor panel 200, a wall portion side fixing portion 263, and the bracket main body portion 21. The outer connection part 264 which connects between them, and the child seat engagement metal fittings 253 and 262 arranged behind the outer connection part 264 are provided.
Two bolt insertion holes 265 into which bolts can be inserted are formed in the wall side fixing portion 263.
As shown in FIG. 2, the child seat engagement fitting 262 disposed behind the outer connection portion 264 is formed in a substantially U shape by bending a columnar bar, and both ends thereof are formed on the inner side. It is arranged toward the connecting portion 25. The child seat engagement fitting 262 is configured to engage with an engagement portion of a child seat (not shown).

  The base bracket 20 configured as described above inserts fixing bolts (not shown) into the bolt insertion holes 252 and 265 of the inner connecting portion 25 and the outer connecting portion 26, and the fixing bolts are connected to the floor panel 200 and the floor wall. It is being fixed to the floor panel 200 by screwing to a part.

As shown in FIG. 1, the rear seat 100 disposed on the vehicle body 2 includes a seat cushion 10 on which an occupant is seated, and a seat back 13 disposed on the back surface of the occupant seated on the seat cushion 10. Yes.
The seat back 13 is arranged to stand upward from the rear end of the seat cushion 10.

As shown in FIGS. 1 and 5, the seat cushion 10 includes a cushion portion 11 on which an occupant is seated, and a cushion side engagement portion 12 disposed behind the cushion portion 11.
The cushion part 11 has a substantially rectangular shape when viewed from above, and includes a right cushion part 111 and a left cushion part 112 respectively disposed on the right rear seat and the left rear seat, and the right cushion part 111 and the left cushion part 112. A central cushion portion 113 disposed between the two is integrally formed.

  The cushion portion 11 is formed by arranging a cushion material on the upper surface of a frame portion (not shown) that forms the lower surface thereof. A fitting fixing portion (not shown) for fitting with the floor panel 200 is formed on the lower surface of the frame portion. By fitting the fitting fixing portion to the floor panel 200, the seat cushion 10 can be fixed to the floor panel 200. It is configured.

  As shown in FIGS. 1 and 5, the cushion-side engaging portion 12 disposed behind the seat cushion 10 is formed by bending a cylindrical bar, and the engagement formed on the U-shape. It has a main body part 121 and engagement connection parts 122 respectively extending from both ends of the engagement main body part 121.

As shown in FIGS. 1 and 5, the engagement main body 121 is arranged such that both ends thereof are on the cushion part 11 side in a state where the seat cushion 10 is attached to the floor panel 200, and is arranged rearward. The tip side portion is inclined so as to be in an upper position.
The engagement connection portion 122 extends so as to be substantially horizontal toward the front in a state where the seat cushion 10 is attached to the floor panel 200, and is joined to a frame portion included in the cushion portion 11.

Next, the attachment order of the seat cushion 10 in this example will be described.
As shown in FIG. 3, the seat cushion 10 is carried into the passenger compartment by an operator in the rear seat mounting step in the vehicle production line. Then, the seat cushion 10 is temporarily placed on the cushion placement portion 201 of the floor panel 200 from the front side of the position where the rear seat 100 is disposed.

  At this time, the seat cushion 10 is tilted so that the front end of the seat cushion 10 is raised, the lower end of the lower surface of the seat cushion 10 is brought into contact with the floor panel 200, and the front end portions 123 of the left and right cushion side engaging portions 12. Is brought into contact with the metal mounting portion 22. When the seat cushion 10 is moved from the front toward the rear, the cushion side engaging portion 12 slides along the metal fitting disposing portion 22 and the opening of the vehicle side engaging metal fitting 23 arranged on the upper and rear sides. Move to the 231 side. In conjunction with this, the cushion part 11 rotates with the vicinity of the rear face rear end part in contact with the floor panel 200 as a fulcrum, and the front end side of the cushion part 11 descends.

As shown in FIGS. 4 and 5, when the seat cushion 10 is further moved rearward, the distal end portion 123 of the cushion side engagement portion 12 passes through the auxiliary wall portion 220 and the opening portion of the vehicle side engagement fitting 23. 231 is reached. Thereby, the cushion side engaging part 12 is inserted and arranged inside the opening part 231. In this state, the seat cushion 10 is fixed to the floor panel 200 by fitting the fitting fixing portion disposed on the lower surface of the seat cushion 10 to the floor panel 200.
At this time, the cushion side engaging portion 12 of the seat cushion 10 is arranged such that the tip end portion 123 is located on the rear side of the upper end of the vehicle side engaging fitting 23.

Next, the function and effect of this example will be described.
As described above, the seat cushion attachment structure 1 moves the seat cushion 10 toward the opening 231 of the vehicle-side engagement fitting 23 in a state where the cushion-side engagement portion 12 and the auxiliary wall portion 220 are in contact with each other. Thus, the seat cushion 10 is configured to be guided toward a fixed position with the vehicle body 2. Thereby, the attachment workability | operativity of the seat cushion 10 can be improved.

  That is, by bringing the cushion side engaging portion 12 into contact with the auxiliary wall portion 220, the rear side of the seat cushion 10 is supported by the auxiliary wall portion 220, and the posture of the seat cushion 10 can be stabilized. Therefore, it is easy to confirm the positional relationship between the vehicle-side engagement fitting 23 and the cushion-side engagement portion 12, and the position adjustment of both can be easily performed. And after adjusting both position, the seat cushion 10 can be moved to a fixed position by moving the seat cushion 10 so that the cushion side engaging part 12 may go to the opening part 231.

  As a result of moving the seat cushion 10, in the fixed position, the cushion side engaging portion 12 is inserted and disposed in the vehicle side engaging bracket 23, and the tip end portion 123 of the cushion side engaging portion 12 is the vehicle side engaging bracket. It will be arranged at the position on the rear side of the upper end of 23. As described above, by stabilizing the posture of the seat cushion 10, it is possible to improve the mounting workability of the seat cushion 10.

  Further, when the cushion side engaging portion 12 moves along the auxiliary wall portion 220 to the opening portion 231, a force that the cushion side engaging portion 12 pushes the auxiliary wall portion 220 is generated, and the cushion side engaging portion 12 receives a reaction force from the auxiliary wall 220. When the cushion side engaging portion 12 reaches the opening 231, the cushion side engaging portion 12 is inserted inside the opening 231. At this time, the reaction force transmitted to the seat cushion 10 does not occur because the tip of the cushion side engaging portion 12 and the auxiliary wall portion 220 are separated. Therefore, an operator who attaches the seat cushion 10 can recognize that the cushion side engaging portion 12 has reached the opening 231. Thereby, the operator can recognize that the seat cushion 10 is correctly attached, and can reliably attach the seat cushion 10 to the vehicle body 2.

  Further, the auxiliary wall portion 220 extends from the base bracket 20 to the vehicle-side engagement fitting 23 side. Therefore, the position of the vehicle side engagement metal fitting 23 can be more easily confirmed by using the auxiliary wall portion 220 as a mark. Therefore, it is possible to easily align the cushion side engagement portion 12 and the vehicle side engagement fitting 23, and to improve the workability of attaching the seat cushion 10.

  In addition, the auxiliary wall portion 220 is inclined rearward so that the upper end portion 232 is disposed at the retracted position. Therefore, the cushion side engaging portion 12 can be smoothly moved on the auxiliary wall portion 220. Thereby, the movement of the seat cushion 10 can be made easier, and the mounting workability of the seat cushion 10 can be improved.

  In addition, on the rear side of the auxiliary wall portion 220, vehicle mounting components are arranged. Therefore, it is possible to prevent the cushion side engaging portion 12 from interfering with or being caught by the vehicle mounting component. Thereby, damage to a mounting component and the cushion side engaging part 12 can be prevented. Examples of the mounted parts include various ECUs, electric wiring 3, and vehicle body 2.

  The base bracket 20 has child seat engagement fittings 253 and 262 for fixing the child seat. Therefore, the child seat engagement fittings 253 and 262 and the vehicle side engagement fitting 23 can be integrated into the base bracket 20. Thereby, the structure can be simplified and the work can be facilitated.

  As described above, according to the seat cushion mounting structure 1 of this example, the seat cushion 10 can be easily aligned and the mounting workability can be improved.

(Example 2)
In this example, the shape of the base bracket 20 in the first embodiment is changed.
As shown in FIGS. 6 and 7, the auxiliary wall portion of the base bracket 20 of this example includes an upper auxiliary wall portion 221 extending from the rear upper end of the metal fitting disposing portion 22 and a front lower end of the metal fitting disposing portion 22. And an extended lower auxiliary wall 222.

  As shown in FIGS. 6 and 7, the upper auxiliary wall portion 221 has an inclination angle along the vehicle-side engagement fitting 23 and an opening 231 of the vehicle-side engagement fitting 23, similar to the auxiliary wall portion 220 in the first embodiment. It is formed so as to cover the lower side. The upper auxiliary wall portion 221 is formed so as to cover the entire width of the vehicle-side engagement fitting 23 in the lateral direction, and about 3 on the lower side of the opening 231 in the extending direction of the vehicle-side engagement fitting 23. It is formed so as to cover a range of a fraction.

  As shown in FIGS. 6 and 7, the lower auxiliary wall 222 extends from the edge opposite to the edge where the upper auxiliary wall 221 extends in the metal fitting disposing part 22 toward the front lower side. Yes. The lower auxiliary wall portion 222 is formed at the same inclination angle as the upper auxiliary wall portion 221 and is arranged so as to cover the front lower end portion of the base bracket 20.

As shown in FIGS. 6 and 7, a concave groove 223 is formed in the upper auxiliary wall portion 221, the metal fitting disposing portion 22 and the lower auxiliary wall portion 222 formed as described above. The concave groove portion 223 is formed by retreating the vicinity of the center in the lateral direction to the back surface side in the upper auxiliary wall portion 221, the metal fitting disposing portion 22 and the lower auxiliary wall portion 222. Further, the concave groove portion 223 is formed continuously from the upper auxiliary wall portion 221, the metal fitting disposing portion 22, and the lower auxiliary wall portion 222.
Other configurations are the same as those of the first embodiment.

  In the seat cushion mounting structure 1 of this example, the upper auxiliary wall part 221, the metal fitting disposing part 22 and the lower auxiliary wall part 222 have a recessed groove part 223 formed by retreating a part thereof to the back side. ing. Therefore, the position of the seat cushion 10 in the left-right direction can be regulated by moving the cushion side engaging portion 12 in the recessed groove portion 223. Thereby, the attachment workability | operativity of the seat cushion 10 can be improved more.

Further, the auxiliary wall portion 220 has a lower auxiliary wall portion 222 extending downward from the base bracket 20. Therefore, the cushion side engaging portion 12 can be prevented from entering below the base bracket 20. Moreover, since the contactable range of the cushion side engaging part 12 is expanded, the cushion side engaging part 12 and the vehicle side engaging metal fitting 23 can be aligned more easily. Thereby, the attachment workability | operativity of the seat cushion 10 can be improved more.
In addition, the same effects as those of the first embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1 Seat cushion attachment structure 100 Rear seat 10 Seat cushion 12 Cushion side engaging part 121 Engaging main-body part 123 Front-end | tip part 2 Vehicle body 20 Base bracket 221 Auxiliary wall part 23 Vehicle side engaging metal fitting 231 Opening part 264 Outer connection part 265 Bolt insertion hole

Claims (7)

A seat cushion mounting structure for mounting a seat cushion constituting a rear seat of a vehicle to a vehicle body,
The vehicle body includes a base bracket disposed behind the rear seat, and an annular vehicle-side engagement metal fitting extending upward from the base bracket,
The base bracket has an auxiliary wall portion that covers a part of the vehicle side engagement metal fitting on the lower side of the opening,
The seat cushion has a cushion side engaging portion disposed behind the seat cushion,
The cushion-side engagement portion is configured to be inserted through the opening of the vehicle-side engagement fitting in a state in which the seat cushion is attached, and a distal end portion is located on the rear side of the upper end of the vehicle-side engagement fitting. And
When attaching the seat cushion, the tip of the cushion side engaging portion can be brought into contact with the auxiliary wall, and the tip is in contact with the auxiliary wall. A seat cushion mounting structure, wherein the seat cushion is configured to be guided to the opening of the vehicle-side engagement fitting while sliding the tip portion on the auxiliary wall by moving the seat cushion. .   2. The seat cushion mounting structure according to claim 1, wherein the auxiliary wall portion extends from the base bracket to the vehicle side engagement metal fitting side.   The seat cushion mounting structure according to claim 1 or 2, wherein the auxiliary wall portion includes a lower auxiliary wall portion extending downward from the base bracket. Mounting structure.   The seat cushion mounting structure according to any one of claims 1 to 3, wherein the auxiliary wall portion is inclined rearward so that an upper end portion thereof is disposed at a retracted position. Seat cushion mounting structure.   The seat cushion mounting structure according to any one of claims 1 to 4, wherein the auxiliary wall portion has a recessed groove portion formed by retreating a part of the auxiliary wall portion to the back surface side. The seat cushion mounting structure.   The seat cushion mounting structure according to any one of claims 1 to 5, wherein a mounting component of a vehicle is disposed behind the auxiliary wall portion.   The seat cushion mounting structure according to any one of claims 1 to 6, wherein the base bracket includes a child seat fixing bracket for fixing the child seat. .

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