JP6922783B2 - Vehicle seat - Google Patents

Description

The present disclosure relates to vehicle seats.

Inside the vehicle seat, a seat frame forming the skeleton is provided. The seat frame has a back frame arranged in the seat back and a cushion frame arranged in the seat cushion. As disclosed in Japanese Patent Application Laid-Open No. 2015-003645 (Patent Document 1), there is known a technique of joining a plurality of members by welding when assembling various members constituting a seat frame.

JP 2015-003645

When various members constituting the seat frame are joined by welding, it becomes difficult to further improve the productivity in the step of joining the members. Welding equipment is also required separately, and processing costs for welding are also required. It is preferable that various members constituting the seat frame can be joined without using a welding method.

It is an object of the present specification to disclose a vehicle seat having a structure capable of joining various members constituting a seat frame to each other without using a welding method.

The vehicle seat according to the present disclosure includes a seat cushion and a seat back, and a seat frame forming the skeleton of the seat cushion and the seat back. The seat frame has a first engaging claw and a first facing surface. It has a first member provided, a second member provided with a second engaging claw and a second facing surface, and a third member provided with a first recess and a second recess, as described above. The first engaging claw is arranged inside the first recess, the second engaging claw is arranged inside the second recess, and at least a part of the first facing surface and the second Since at least a part of the facing surfaces are pressed against each other, the first engaging claw engages with the first recess, and the second engaging claw engages with the second recess. There is.

In the vehicle seat, the first recess and the second recess are preferably formed so as to face each other.

In the vehicle seat, the third member preferably has a protrusion between the first recess and the second recess, and the protrusion is the first facing surface and the first. It is arranged between the two facing surfaces and presses at least one of the first facing surface and the second facing surface.

In the vehicle seat, the first member is preferably a cushion panel arranged between a pair of side frames, and the first engaging claw and the first facing surface are located at the front end of the cushion panel. The second member provided is a rear frame portion constituting the side frame, and the rear frame portion has an upper front end portion and a lower front end portion, and the second engaging claw and the second engaging claw and the lower front end portion are provided. The second facing surface is provided at the lower front end portion, the third member is a front frame portion constituting the side frame, and the front frame portion is an upper rear end portion and a lower rear end portion. The first recess and the second recess are provided at the lower rear end portion.

In the vehicle seat, preferably, the lower rear end portion of the third member has a concave shape with the lower side open, and the first concave portion and the second concave portion have the concave shape. It is formed inside.

In the vehicle seat, the first recess is preferably provided on the front side of the second recess, and the first member as the cushion panel is the second member as the rear frame portion. It is located below.

In the vehicle seat, preferably, each of the first member, the second member, and the third member is made of an aluminum alloy or a magnesium alloy having a constant cross-sectional shape in a direction orthogonal to the seat width direction. It is composed of being cut out from an extruded material.

According to the vehicle seat disclosed in the present specification, various members constituting the seat frame can be joined to each other without using a welding method.

It is a side view which shows the schematic structure of the vehicle seat 100. It is a side view which shows the cushion frame 4. It is a perspective view which shows the appearance mode of the cushion frame 4 which is visually recognized when the cushion frame 4 is seen from the diagonally upper left front. It is a perspective view which shows the appearance mode of the cushion frame 4 which is visually recognized when the cushion frame 4 is seen from the diagonally upper left rear. FIG. 5 is a perspective view showing a state in which the cushion panel 10, the rear frame portion 20, and the front frame portion 30 constituting the cushion frame 4 are separated from each other. It is a side view which shows the area surrounded by the VI line in FIG. 2 in an enlarged manner. It is a side view which shows a part of the vehicle seat in the 1st modification. It is a side view which shows a part of the vehicle seat in the 2nd modification. It is a side view which shows a part of the vehicle seat in the 3rd modification. It is a side view which shows a part of the vehicle seat in 4th modification. It is a side view which shows a part of the vehicle seat in the 5th modification.

The embodiment will be described below with reference to the drawings. The same parts and equivalent parts may be given the same reference numbers and duplicate descriptions may not be repeated.

[Vehicle seat 100]
FIG. 1 is a side view showing a schematic configuration of a vehicle seat 100. The vehicle seat 100 includes a seat cushion 1 and a seat back 2, and is used as, for example, a rear seat of an automobile. A seat frame 3 is provided inside the vehicle seat 100. The seat frame 3 forms the skeleton of the seat cushion 1 and the seat back 2. The seat frame 3 of the present embodiment has a cushion frame 4 arranged inside the seat cushion 1 and a back frame 5 arranged inside the seat back 2.

[Cushion frame 4]
FIG. 2 is a side view showing the cushion frame 4. FIG. 3 is a perspective view showing an appearance mode of the cushion frame 4 which is visually recognized when the cushion frame 4 is viewed from the diagonally upper left front. FIG. 4 is a perspective view showing an appearance mode of the cushion frame 4 which is visually recognized when the cushion frame 4 is viewed from diagonally upper left and rearward. FIG. 5 is a perspective view showing a state in which the cushion panel 10, the rear frame portion 20, and the front frame portion 30 constituting the cushion frame 4 are separated from each other.

As shown in FIGS. 2 to 4, the cushion frame 4 includes a cushion panel 10, a front panel 40, and a pair of side frames 50L and 50R. The side frames 50L and 50R are arranged apart from each other in the left-right direction of the vehicle seat 100, that is, in the seat width direction. The front panel 40 and the cushion panel 10 are arranged between the side frames 50L and 50R, and are separated from each other in the front-rear direction. In the present embodiment, the cushion panel 10 is arranged below the rear frame portion 20.

The front panel 40 connects the front side portions of the side frames 50L and 50R to each other. The cushion panel 10 connects the rear portions of the side frames 50L and 50R to each other. Each of the side frames 50L and 50R has a rear frame portion 20 and a front frame portion 30. In the present embodiment, the cushion panel 10 corresponds to the "first member", the rear frame portion 20 corresponds to the "second member", and the front frame portion 30 corresponds to the "third member".

The rear frame portion 20 provided in the side frame 50L and the rear frame portion 20 provided in the side frame 50R have the same configuration as each other. The front frame portion 30 provided in the side frame 50L and the front frame portion 30 provided in the side frame 50R have the same configuration as each other.

(Front panel 40)
The front panel 40 includes a lower surface portion 40A, a front end portion 40B, a rear end portion 40C, an upper surface portion 40P, an intermediate connection portion 40Q, a curved portion 40R, a fitting groove 40G, and a support rib 40L, all of which have a seat width. It is formed so as to extend in the direction. The front panel 40 is manufactured by cutting out from an extruded material made of an aluminum alloy or a magnesium alloy having a constant cross-sectional shape in a direction orthogonal to the seat width direction.

The upper surface portion 40P has a plate-like shape and extends from the front end portion 40B to the intermediate connection portion 40Q. A curved portion 40R is provided at a position between the front end portion 40B and the intermediate connecting portion 40Q of the upper surface portion 40P. A fitting groove 40G is provided between the front end portion 40B and the curved portion 40R. The fitting groove 40G has a concave shape with the upper side open, and extends in the seat width direction.

The lower surface portion 40A has a plate-like shape, connects the front end portion 40B and the intermediate connection portion 40Q, and extends from the front end portion 40B to the rear end portion 40C. The intermediate connecting portion 40Q has a concave shape with the lower side open, and extends in the seat width direction. The support rib 40L stands up from the lower surface portion 40A and extends from the lower surface portion 40A toward the curved portion 40R.

(Cushion panel 10 (first member))
FIG. 6 is an enlarged side view showing the area surrounded by the VI line in FIG. 2. With reference primarily to FIGS. 5 and 6, the cushion panel 10 (FIG. 5) comprises a base portion 10A, a front end portion 10B, a rear end portion 10C, and a plurality of ribs 10D, all of which are in the seat width direction. It is formed so as to extend to. The cushion panel 10 is also manufactured by cutting out from an extruded material made of an aluminum alloy or a magnesium alloy having a constant cross-sectional shape in a direction orthogonal to the seat width direction.

The base portion 10A has a plate-like shape, and the portion of the base portion 10A between the front end portion 10B and the rear end portion 10C is curved (FIG. 5). The front end portion 10B is provided with a standing wall portion 10E and an engaging claw 10F (first engaging claw). The standing wall portion 10E is provided between the base portion 10A and the engaging claw 10F (FIG. 6), and the surface of the standing wall portion 10E located on the rear side constitutes a facing surface 10G (first facing surface). doing. The engaging claw 10F is provided on the upper portion of the standing wall portion 10E and is formed so as to face the front side.

The plurality of ribs 10D are provided between the front end portion 10B and the rear end portion 10C of the base portion 10A, and are formed side by side at intervals in the front-rear direction. Both the rib 10D and the rear end portion 10C have a substantially L-shaped shape when viewed from the side, and extend along the seat width direction. The rearmost rib 10D (10Da) of the plurality is facing each other with the rear end portion 10C (FIG. 5).

(Rear frame portion 20 (second member))
The rear frame portion 20 (see FIG. 5) includes a lower surface portion 20A, a lower front end portion 20B, a rear end portion 20C, an upper surface portion 20P, an upper front end portion 20Q, a connection portion 20R, a plurality of support ribs 20L, and a plurality of ribs 20D. All of them are formed so as to extend in the seat width direction. The rear frame portion 20 is also manufactured by being cut out from an extruded material made of an aluminum alloy or a magnesium alloy having a constant cross-sectional shape in a direction orthogonal to the sheet width direction.

The upper surface portion 20P has a plate-like shape and extends from the upper front end portion 20Q to the connecting portion 20R. The upper front end portion 20Q has a convex shape protruding downward. The lower surface portion 20A has a plate-like shape and extends from the lower front end portion 20B to the connecting portion 20R. The upper surface portion 20P and the lower surface portion 20A face each other and are connected to each other at the position of the connecting portion 20R. The plurality of support ribs 20L are provided between the upper surface portion 20P and the lower surface portion 20A.

The lower front end portion 20B is provided with a standing wall portion 20E and an engaging claw 20F (second engaging claw). The standing wall portion 20E is provided between the lower surface portion 20A and the engaging claw 20F (FIG. 6), and the front surface of the standing wall portion 20E constitutes a facing surface 20G (second facing surface). There is. The engaging claw 20F is provided on the upper portion of the standing wall portion 20E and is formed so as to face the rear side.

The plurality of ribs 20D are provided between the lower front end portion 20B and the rear end portion 20C on the lower surface portion 20A, and are formed side by side at intervals in the front-rear direction. Both the rib 20D and the rear end portion 20C have a substantially L-shaped shape when viewed from the side, and extend along the seat width direction. The rib 20D (20Da) located on the rearmost side of the plurality is facing in the direction opposite to the rear end portion 20C (FIG. 5).

(Front frame portion 30 (third member))
The front frame portion 30 (FIG. 5) includes a lower surface portion 30A, a lower front end portion 30B, a lower rear end portion 30C, an upper surface portion 30P, an upper front end portion 30Q, an upper rear end portion 30R, and a plurality of support ribs 30L. Are all formed so as to extend in the seat width direction. The front frame portion 30 is also manufactured by cutting out from an extruded material made of an aluminum alloy or a magnesium alloy having a constant cross-sectional shape in a direction orthogonal to the sheet width direction.

The upper surface portion 30P has a plate-like shape and extends from the upper front end portion 30Q to the upper rear end portion 30R. The lower surface portion 30A has a plate-like shape and extends from the lower front end portion 30B to the lower rear end portion 30C. The upper surface portion 30P and the lower surface portion 30A face each other, and a plurality of support ribs 30L are provided between the upper surface portion 30P and the lower surface portion 30A.

The upper front end portion 30Q has a convex shape protruding downward, and the upper rear end portion 30R has a concave shape with the upper side open. The lower front end portion 30B has a convex shape protruding upward. The lower rear end portion 30C (FIG. 6) has a concave shape with the lower side open, and the recess 30D (first recess) and the recess 30E (second recess) are inside the concave shape. ), And a protrusion 30F is provided.

As shown in FIG. 6, the recess 30D is provided on the front side of the recess 30E. In the present embodiment, the recess 30D is provided on the front side when viewed from the protrusion 30F, and the recess 30E is provided on the rear side when viewed from the protrusion 30F. In the present embodiment, the recesses 30D and 30E are formed so as to face each other.

[Assembly of front panel 40 and front frame portion 30]
The fitting groove 40G and the intermediate connecting portion 40Q provided on the front panels 40 (FIGS. 2 to 4) extend in the seat width direction. The upper front end portions 30Q of the side frames 50L and 50R (front side frame portions 30 and 30) are fitted into the fitting groove 40G. The fitting groove 40G and the upper front end portion 30Q are fitted while sliding with each other in the seat width direction. The lower front end portions 30B of the side frames 50L and 50R (front side frame portions 30 and 30) are fitted into the intermediate connection portion 40Q. The intermediate connecting portion 40Q and the lower front end portion 30B are fitted while sliding with each other in the seat width direction.

A gap (cylindrical space) may be formed between the intermediate connecting portion 40Q and the lower front end portion 30B. A screw (not shown) is inserted into this gap from the outside in the seat width direction. By inserting the screw, the lower front end portion 30B is deformed so that its inner diameter (radius of curvature) is expanded, and the outer surface of the lower front end portion 30B is pressed against the inner surface of the intermediate connecting portion 40Q. The intermediate connecting portion 40Q and the lower front end portion 30B can be fitted with a stronger force.

[Assembly of cushion panel 10, rear frame portion 20 and front frame portion 30]
The cushion panel 10 is arranged below the rear frame portion 20. The rear end portion 10C and the rib 10D provided on the cushion panel 10 (FIGS. 2 to 4) extend in the seat width direction. The rear end portion 20C of the rear frame portion 20 is fitted inside the rear end portion 10C of the cushion panel 10. The rear end portions 10C and 20C are fitted while sliding against each other in the seat width direction. Similarly, for the plurality of ribs 10D and 20D, each of them fits while sliding against each other in the seat width direction.

A gap (cylindrical space) may be formed between the rear end portion 20C and the rib 20D (20Da). A screw (not shown) is inserted into this gap from the outside in the seat width direction. By inserting the screw, the rear end portion 20C is deformed so that its inner diameter is expanded, and the outer surface of the rear end portion 20C is pressed against the inner surface of the rear end portion 10C. The rear end portions 10C and 20C can be fitted with a stronger force. Similarly, the rib 20D (20Da) is also deformed so that its inner diameter is expanded, and the outer surface of the rib 20D (20Da) is pressed against the inner surface of the rib 10D (10Da). The rib 10D (10Da) and the rib 20D (20Da) can be fitted with a stronger force.

The upper front end 20Q of the rear frame 20 is fitted inside the upper rear end 30R of the front frame 30. The upper rear end portion 30R and the upper front end portion 20Q are fitted while being in sliding contact with each other in the seat width direction. The lower front end 20B of the rear frame 20 and the front end 10B of the cushion panel 10 are fitted inside the lower rear end 30C of the front frame 30. The lower rear end portion 30C, the lower front end portion 20B, and the front end portion 10B are fitted while being in sliding contact with each other in the seat width direction.

As shown in FIG. 6, the engaging claw 10F (first engaging claw) is arranged inside the recess 30D (first recess), and the engaging claw 20F is arranged inside the recess 30E (second recess). (Second engaging claw) is arranged. A distance L is defined between the front end of the engaging claw 10F and the rear end of the engaging claw 20F in a state where the facing surfaces 10G and 20G are in contact with each other. The distance between the front end of the recess 30D and the rear end of the recess 30E is set shorter than this distance L.

Therefore, in a state where the engaging claw 10F is arranged inside the recess 30D and the engaging claw 20F is arranged inside the recess 30E, at least a part of the facing surface 10G and at least a part of the facing surface 20G. Will press against each other. Since at least a part of the facing surface 10G and at least a part of the facing surface 20G are pressing against each other, the reaction force due to the pressing remains in the assembled state, and as a result, the engaging claw 10F has a recess 30D. The engaging claw 20F can be engaged with a stronger force, and the engaging claw 20F can be engaged with a stronger force due to the recess 30E.

(Action and effect)
The front frame portion 30 and the rear frame portion 20 are integrated with each other in cooperation with the front end portion 10B of the cushion panel 10 to form the side frame 50L. The same applies to the side frame 50R. The side frames 50L and 50R are integrated with each other via the front panel 40 and the cushion panel 10 to form the cushion frame 4.

In the present embodiment, the engaging claw 10F engages with the recess 30D and the engaging claw 20F engages with the recess 30E in such a manner that at least a part of the facing surfaces 10G and 20G press against each other. doing. By these engagements, the cushion panel 10, the rear frame portion 20, and the front frame portion 30 are integrated. Since each of these members forming the skeleton of the vehicle seat 100 (FIG. 1) can be joined to each other without using a welding method, the manufacturing cost is reduced by the amount of welding equipment and welding processing costs. It becomes possible to suppress it. Compared to the case where these are joined using rivets or the like, according to the present embodiment, it is possible to keep the manufacturing cost low for the same reason.

As described above, the recess 30D (first recess) and the recess 30E (second recess) are formed so as to face each other. Assuming that a straight line connecting the recess 30D and the recess 30E is virtually drawn, the facing surfaces 10G and 20G both have a relationship substantially orthogonal to this straight line. At least a part of the facing surface 10G and at least a part of the facing surface 20G press against each other, and a reaction force is generated with this pressing. Since the above-mentioned substantially orthogonal relationship is established, this reaction force is efficiently utilized for the engagement between the engaging claw 10F and the recess 30D, and the engagement between the engaging claw 20F and the recess 30E. It is used for.

[First modification]
FIG. 7 is a side view showing a part of the vehicle seat in the first modification, and corresponds to FIG. The lower rear end portion 30C shown in FIG. 7 also has a concave shape with the lower side open, and the recess 30D (first recess) and the recess 30E (second concave) are inside the lower rear end 30C. Place), and a protrusion 30F is provided. The protrusion 30F is located between the recesses 30D and 30E. The protrusion 30F shown in FIG. 7 extends downward from the protrusion 30F shown in FIG.

The protrusion 30F is arranged between the facing surfaces 10G and 20G. Specifically, the protruding portion 30F is arranged between a portion of the facing surface 10G that is not in contact with the facing surface 20G and a portion of the facing surface 20G that is not in contact with the facing surface 10G. The protruding portion 30F presses the facing surface 10G forward and the facing surface 20G rearward. The reaction force due to the pressing remains in the assembled state. The engaging claw 10F can be engaged with a stronger force by the recess 30D, and the engaging claw 20F can be engaged with a stronger force by the recess 30E. It is possible to join each of these members forming the skeleton of the vehicle seat to each other without using a welding method.

[Second modification]
In the embodiment shown in FIG. 7 (first modification), the protruding portion 30F presses the engaging claw 10F toward the front side via the facing surface 10G, and the protruding portion 30F engages via the facing surface 20G. The claw 20F is pressed toward the rear side.

As shown in FIG. 8, the projecting portion 30F may press at least one facing surface of the facing surface 10G and the facing surface 20G. In the embodiment shown in FIG. 8, the protruding portion 30F presses the engaging claw 20F toward the rear side via the facing surface 20G.

[Third variant]
As shown in FIG. 9, the protruding portion 30F may not be provided inside the lower rear end portion 30C. Even in this case, when the engaging claw 10F is arranged inside the recess 30D and the engaging claw 20F is arranged inside the recess 30E, at least a part of the facing surface 10G and the facing surface 20G At least a part of the above will press against each other. The engaging claw 10F can be engaged with a stronger force by the recess 30D, and the engaging claw 20F can be engaged with a stronger force by the recess 30E. It is possible to join each of these members forming the skeleton of the vehicle seat to each other without using a welding method.

[Fourth variant]
In the above-described embodiment and the first to third modifications, the cushion panel 10 corresponds to the "first member", the rear frame portion 20 corresponds to the "second member", and the front frame portion 30 corresponds to the "second member". Corresponds to the "third member". On the other hand, in the embodiment shown in FIG. 10 (fourth modification), the cushion panel 10 corresponds to the "first member", the front frame portion 30 corresponds to the "second member", and the rear frame portion 20 corresponds to the "second member". Corresponds to the "third member".

As shown in FIG. 10, the front end portion 10B of the cushion panel 10 is provided with a standing wall portion 10J and an engaging claw 10K (first engaging claw). The standing wall portion 10J is provided between the base portion 10A and the engaging claw 10K, and the front surface of the standing wall portion 10J constitutes the facing surface 10G (first facing surface). The engaging claw 10K is provided on the upper portion of the standing wall portion 10J and is formed so as to face the rear side.

A vertical wall portion 30J and an engaging claw 30K (second engaging claw) are provided on the lower rear end portion 30C of the front frame portion 30. The standing wall portion 30J is provided between the lower surface portion 30A and the engaging claw 30K, and the surface of the standing wall portion 30J located on the rear side constitutes the facing surface 30G (second facing surface). The engaging claw 30K is provided on the upper portion of the standing wall portion 30J and is formed so as to face the front side.

The lower front end 20B of the rear frame portion 20 has a concave shape with the lower side open, and the recess 20M (first recess) and the recess 20N (second recess) are inside the lower front end 20B. A recess) is provided. The recesses 20M and 20N are formed so as to face each other.

The engaging claw 10K (first engaging claw) is arranged inside the recess 20M (first recess), and the engaging claw 30K (second engaging claw) is placed inside the recess 20N (second recess). Is placed. A distance L is defined between the rear end of the engaging claw 10K and the front end of the engaging claw 30K in a state where the facing surfaces 10G and 20G are in contact with each other. The distance between the rear end of the recess 20M and the front end of the recess 20N is set shorter than this distance L.

In a state where the engaging claw 10K is arranged inside the recess 20M and the engaging claw 30K is arranged inside the recess 20N, at least a part of the facing surface 10G and at least a part of the facing surface 30G are arranged with each other. It will be pressed. Since at least a part of the facing surface 10G and at least a part of the facing surface 30G are pressing against each other, the reaction force due to the pressing remains in the assembled state, and as a result, the engaging claw 10K has a recess 20M. It is possible to engage with a stronger force, and the engaging claw 30K can be engaged with a stronger force due to the recess 20N. It is possible to join each of these members forming the skeleton of the vehicle seat to each other without using a welding method.

[Fifth variant]
In the aspect shown in FIG. 11 (fifth modification), the front frame portion 30 corresponds to the "first member", the rear frame portion 20 corresponds to the "second member", and the cushion panel 10 corresponds to the "third member". Corresponds to "member".

As shown in FIG. 11, the lower rear end portion 30C of the front frame portion 30 is provided with a standing wall portion 30J and an engaging claw 30K (first engaging claw). The standing wall portion 30J is provided between the lower surface portion 30A and the engaging claw 30K, and the surface of the standing wall portion 30J located on the rear side constitutes the facing surface 30G (first facing surface). The engaging claw 30K is provided at the lower part of the standing wall portion 30J and is formed so as to face the front side.

The lower front end portion 20B of the rear frame portion 20 is provided with a standing wall portion 20J and an engaging claw 20K (second engaging claw). The standing wall portion 20J is provided between the lower surface portion 20A and the engaging claw 20K, and the front surface of the standing wall portion 20J constitutes the facing surface 20G (second facing surface). The engaging claw 20K is provided at the lower part of the standing wall portion 20J and is formed so as to face the rear side.

The front end portion 10B of the cushion panel 10 has a concave shape with the upper side open, and a recess 10N (first recess) and a recess 10M (second recess) are provided inside the front end 10B. Provided. The recesses 10N and 10M are formed so as to face each other.

The engaging claw 30K (first engaging claw) is arranged inside the recess 10N (first recess), and the engaging claw 20K (second engaging claw) is placed inside the recess 10M (second recess). Is placed. A distance L is defined between the front end of the engaging claw 30K and the rear end of the engaging claw 20K in a state where the facing surfaces 30G and 20G are in contact with each other. The distance between the front end of the recess 10N and the rear end of the recess 10M is set shorter than this distance L.

In a state where the engaging claw 30K is arranged inside the recess 10N and the engaging claw 20K is arranged inside the recess 10M, at least a part of the facing surface 30G and at least a part of the facing surface 20G are arranged with each other. It will be pressed. Since at least a part of the facing surface 30G and at least a part of the facing surface 20G are pressing against each other, the reaction force due to the pressing remains in the assembled state, and as a result, the engaging claw 30K has a recess 10N. It is possible to engage with a stronger force, and the engaging claw 20K can be engaged with a stronger force due to the recess 10M. It is possible to join each of these members forming the skeleton of the vehicle seat to each other without using a welding method.

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

1 Seat cushion, 2 Seat back, 3 Seat frame, 4 Cushion frame, 5 Back frame, 10 Cushion panel, 10A base part, 10B, 40B front end part, 10C, 20C, 40C rear end part, 10D, 20D rib, 10E , 10J, 20E, 20J, 30J Standing wall, 10F, 10K, 20F, 20K, 30K Engagement claws, 10G, 20G, 30G Opposing surface, 10M, 10N, 20M, 20N, 30D, 30E Recess, 20 Rear frame 20A, 30A, 40A Lower surface, 20B, 30B Lower front end, 20L, 30L, 40L Support rib, 20P, 30P, 40P Upper surface, 20Q, 30Q Upper front end, 20R connection, 30 Front frame, 30C Lower rear end, 30F protrusion, 30R upper rear end, 40 front panel, 40G fitting groove, 40Q intermediate connection, 40R curved part, 50L, 50R side frame, 100 vehicle seat, L distance.

Claims (7)

With seat cushions and seat backs,
The seat cushion and the seat frame forming the skeleton of the seat back are provided.
The seat frame
A first member provided with a first engaging claw and a first facing surface, and
A second member provided with a second engaging claw and a second facing surface, and
It has a first recess and a third member provided with a second recess.
The first engaging claw is arranged inside the first recess, the second engaging claw is arranged inside the second recess, and at least a part of the first facing surface and the first 2 The first engaging claw engages with the first recess and the second engaging claw engages with the second recess because at least a part of the facing surfaces presses against each other. ing,
Vehicle seat. The first recess and the second recess are formed so as to face each other.
The vehicle seat according to claim 1. The third member has a protrusion between the first recess and the second recess.
The protruding portion is arranged between the first facing surface and the second facing surface, and presses at least one facing surface of the first facing surface and the second facing surface.
The vehicle seat according to claim 2. The first member is a cushion panel arranged between a pair of side frames, and the first engaging claw and the first facing surface are provided at the front end portion of the cushion panel.
The second member is a rear frame portion constituting the side frame, and the rear frame portion has an upper front end portion and a lower front end portion, and the second engaging claw and the second engaging claw. The facing surface is provided at the lower front end portion and is provided.
The third member is a front frame portion constituting the side frame, and the front frame portion has an upper rear end portion and a lower rear end portion, and the first concave portion and the second concave portion. The place is provided at the lower rear end portion.
The vehicle seat according to any one of claims 1 to 3. The lower rear end portion of the third member has a concave shape with the lower side open, and the first concave portion and the second concave portion are formed inside the concave shape.
The vehicle seat according to claim 4. The first recess is provided on the front side of the second recess.
The first member as the cushion panel is arranged below the second member as the rear frame portion.
The vehicle seat according to claim 5. Each of the first member, the second member, and the third member is formed by being cut out from an extruded material made of an aluminum alloy or a magnesium alloy having a constant cross-sectional shape in a direction orthogonal to the sheet width direction. Has been
The vehicle seat according to any one of claims 1 to 6.

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