JP2019142454A - Vehicle seat - Google Patents

Abstract

To obtain a vehicle seat having a configuration capable of joining a plurality of members to each other without using a welding method.SOLUTION: A vehicle seat comprises a seat cushion, a seat back, and a seat frame. The seat frame has a first member 10 provided with a first engaging claw 10F and a first pressure receiving face 10G, a second member 20 provided with a second engaging claw 20F and a second pressure receiving face 20F, a third member 30 provided with a first recess 30D and a second recess 30E, and an insertion member 70L disposed to face the first pressure receiving face 10G and the second pressure receiving face 20G. The first engaging claw 10F is disposed inside the first recess 30D, the second engaging claw 20F is disposed inside the second recess 30E, and the insertion member 70L presses the first pressure receiving face 10G and the second pressure receiving face 20G, and thereby the first engaging claw 10F engages with the first recess 30D, and the second engaging claw 20F engages with the second recess 30E.SELECTED DRAWING: Figure 5

Description

  The present disclosure relates to a vehicle seat.

  A seat frame forming the skeleton is provided inside the vehicle seat. The seat frame includes a back frame disposed in the seat back and a cushion frame disposed in the seat cushion. As disclosed in JP-A-2015-003645 (Patent Document 1), a technique of joining a plurality of members by welding is known when assembling various members constituting a seat frame.

JP2015-003645A

  When various members constituting the seat frame are joined together by welding, it becomes difficult to further improve productivity in the step of joining the members together. 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.

  A vehicle seat according to the present disclosure includes a seat cushion and a seat back, and a seat frame that forms a skeleton of the seat cushion and the seat back. The seat frame includes first engagement claws and a first pressure receiving surface. A first member provided; a second member provided with a second engagement claw and a second pressure receiving surface; a third member provided with a first recess and a second recess; and the first pressure receiving surface. And an insertion member disposed so as to face the second pressure receiving surface, the first engagement claw is disposed inside the first recess, and the first engagement claw is disposed inside the second recess. Since the two engaging claws are disposed and the insertion member presses the first pressure receiving surface and the second pressure receiving surface, the first engaging claws engage with the first recess. The second engaging claw is engaged with the second recess.

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

  Preferably, in the vehicle seat, the insertion member is provided on a shaft portion inserted between the first pressure receiving surface and the second pressure receiving surface, and on an outer side in the seat width direction of the shaft portion. The relative position in the sheet width direction of the first member, the second member, and the third member is defined by contacting the first member, the second member, and the third member from the outside in the sheet width direction. And a head.

  Preferably, in the vehicle seat, the first member is a cushion panel disposed between a pair of side frames, and the first engagement claw and the first pressure receiving surface are provided at a front end portion of the cushion panel. Provided, 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 pressure receiving 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 includes 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.

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

  Preferably, in the vehicle seat, the first recess is provided in front of the second recess, and the first member as the cushion panel is the second member as the rear frame portion. It is arranged below.

  Preferably, in the vehicle seat, 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 sheet width direction. It is configured by cutting out from the extruded material.

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

1 is a side view showing a schematic configuration of a vehicle seat 100. FIG. It is a side view which shows the cushion frame 4. FIG. It is a perspective view which shows the external appearance aspect of the cushion frame 4 visually recognized when the cushion frame 4 is seen from the diagonally upper left front. It is a perspective view which shows the external appearance aspect of the cushion frame 4 visually recognized when the cushion frame 4 is seen from diagonally left upper back. It is a perspective view which shows the state from which the cushion panel 10, the back side frame part 20, the front side frame part 30, and the screw | thread 70L which comprise the cushion frame 4 were mutually isolate | separated. It is a side view which expands and shows the area | region enclosed by VI line | wire in FIG. FIG. 6 is a side view showing a state in which a screw 70L is removed from the cushion panel 10, the rear frame part 20, and the front frame part 30 constituting the cushion frame 4. It is a side view which shows a part of vehicle seat in a 1st modification. It is a side view which shows a part of vehicle seat in a 2nd modification.

  Hereinafter, embodiments will be described with reference to the drawings. The same parts and corresponding parts are denoted by the same reference numerals, and redundant description 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 a skeleton of the seat cushion 1 and the seat back 2. The seat frame 3 according to the present embodiment includes a cushion frame 4 disposed inside the seat cushion 1 and a back frame 5 disposed 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 of the cushion frame 4 that is visually recognized when the cushion frame 4 is viewed from the upper left front side. FIG. 4 is a perspective view showing an appearance of the cushion frame 4 that is visually recognized when the cushion frame 4 is viewed from the upper left and obliquely rearward. FIG. 5 is a perspective view showing a state where the cushion panel 10, the rear frame part 20, the front frame part 30 and the screw 70 </ b> L 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, a pair of side frames 50 </ b> L and 50 </ b> R, and a pair of screws 70 </ b> L and 70 </ b> R (FIGS. 3 and 4). 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 disposed 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 disposed below the rear frame portion 20.

  The front panel 40 connects the front side portions of the side frames 50L and 50R. The cushion panel 10 connects the rear portions of the side frames 50L and 50R. Each of the side frames 50 </ b> L and 50 </ b> R includes a rear frame part 20 and a front frame part 30. In the present embodiment, the cushion panel 10 corresponds to a “first member”, the rear frame portion 20 corresponds to a “second member”, and the front frame portion 30 corresponds to a “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. 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.

(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 to extend in the direction. The front panel 40 is manufactured by cutting out from an extruded material made of aluminum alloy or magnesium alloy having a constant cross-sectional shape in a direction orthogonal to the sheet width direction.

  The upper surface portion 40P has a plate 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 connection portion 40Q in 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 opened, and extends in the sheet width direction.

  The lower surface portion 40A has a plate 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 connection portion 40Q has a concave shape with an open lower side, and extends in the sheet width direction. The support rib 40L rises 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 a region surrounded by line VI in FIG. Referring mainly to FIGS. 5 and 6, the cushion panel 10 (FIG. 5) includes 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 to extend. The cushion panel 10 is also produced by being cut out from an extruded material made of aluminum alloy or 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 a 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 located on the rear side of the standing wall portion 10E constitutes a pressure receiving surface 10G (first pressure receiving surface). doing. The engaging claw 10F is provided on the upper portion of the standing wall portion 10E and is formed 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 with a space in the front-rear direction. Each of the rib 10D and the rear end portion 10C has a substantially L shape in a side view and extends along the sheet width direction. The rib 10D (10Da) located on the rearmost side among the plurality faces 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. These are all formed so as to extend in the sheet width direction. The rear frame portion 20 is also produced by being cut out from an extruded material made of aluminum alloy or 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 shape and extends from the upper front end portion 20Q to the connection portion 20R. The upper front end 20Q has a convex shape that protrudes downward. The lower surface portion 20A has a plate shape, and extends from the lower front end portion 20B to the connection 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 connection 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 engagement claw 20F (second engagement claw). The standing wall portion 20E is provided between the lower surface portion 20A and the engaging claw 20F (FIG. 6), and the surface located on the front side of the standing wall portion 20E constitutes a pressure receiving surface 20G (second pressure receiving surface). Yes. Engagement claw 20F is provided in the upper part of standing wall part 20E, and is formed so that it may face the back side.

  The plurality of ribs 20D are provided between the lower front end portion 20B and the rear end portion 20C in the lower surface portion 20A, and are formed side by side with a space in the front-rear direction. Each of the rib 20D and the rear end portion 20C has a substantially L-shape when viewed from the side, and extends along the sheet width direction. The rib 20D (20Da) located on the rearmost side among the plurality faces 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. Each is formed so as to extend in the sheet width direction. The front frame portion 30 is also produced by being cut out from an extruded material made of aluminum alloy or 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 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 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 are opposed to each other, and the 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 whose upper side is opened. 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 inside the concave shape are a recess 30D (first recess) and a recess 30E (second recess). ) And a protrusion 30F.

  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 as viewed from the protrusion 30F, and the recess 30E is provided on the rear side as 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 30]
The fitting groove 40G and the intermediate connection portion 40Q provided in the front panel 40 (FIGS. 2 to 4) extend in the sheet width direction. The upper front end portion 30Q of each of the side frames 50L and 50R (front frame portions 30 and 30) is fitted into the fitting groove 40G. The fitting groove 40G and the upper front end 30Q are fitted while being in sliding contact with each other in the sheet width direction. The lower front end portions 30B of the side frames 50L, 50R (front frame portions 30, 30) are fitted into the intermediate connection portion 40Q. The intermediate connection portion 40Q and the lower front end portion 30B are fitted while being in sliding contact with each other in the sheet width direction.

  A gap (columnar space) may be formed between the intermediate connection portion 40Q and the lower front end portion 30B. A screw (not shown) is inserted into the gap from the outside in the sheet width direction. By inserting the screw, the lower front end portion 30B is deformed so that its inner diameter (curvature radius) is enlarged, and the outer surface of the lower front end portion 30B is pressed against the inner surface of the intermediate connection portion 40Q. The intermediate connection 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 disposed 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 being in sliding contact with each other in the sheet width direction. Similarly, the plurality of ribs 10D and 20D are fitted while being in sliding contact with each other in the sheet width direction.

  A gap (columnar space) may be formed between the rear end 20C and the rib 20D (20Da). A screw (not shown) is inserted into the gap from the outside in the sheet width direction. By inserting the screw, the rear end portion 20C is deformed so that its inner diameter is enlarged, 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 enlarged, 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 portion 20Q of the rear frame portion 20 is fitted inside the upper rear end portion 30R of the front frame portion 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 sheet width direction. A lower front end portion 20B of the rear frame portion 20 and a front end portion 10B of the cushion panel 10 are disposed inside the lower rear end portion 30C of the front frame portion 30. FIG. 7 is a side view showing a state in which the screws 70L are removed from the cushion panel 10, the rear frame portion 20, and the front frame portion 30 constituting the cushion frame 4.

  As shown in FIGS. 6 and 7, the lower front end 20B and the front end 10B are arranged inside the lower rear end 30C. The outer surface of the lower front end portion 20B and the outer surface of the front end portion 10B are arranged to be easier to arrange the lower front end portion 20B and the front end portion 10B inside the lower rear end portion 30C than the shape of the inner surface of the lower rear end portion 30C. The surface is preferably formed to be slightly smaller. A gap S (FIG. 7) having a substantially cylindrical shape is formed between the protruding portion 30F of the lower rear end portion 30C, the pressure receiving surface 10G of the front end portion 10B, and the pressure receiving surface 20G of the lower front end portion 20B. . A screw 70L (insertion member) is inserted into the gap S from the outside in the sheet width direction.

  The screw 70L (FIG. 6) includes a head portion 71 and a shaft portion 72. The shaft portion 72 has a larger diameter than the gap S and is press-fitted from the outside in the sheet width direction toward the space between the pressure receiving surfaces 10G and 20G (in the gap S). Without being limited to such a configuration, a male screw is formed on the outer peripheral surface of the shaft portion 72, and the shaft portion 72 is rotated between the pressure receiving surfaces 10G and 20G while rotating so as to form a female screw on the pressure receiving surfaces 10G and 20G. May be inserted.

  In the state where the engaging claw 10F is disposed inside the recess 30D, the engaging claw 20F is disposed inside the recess 30E, and the screw 70L is disposed in the gap S between the pressure receiving surfaces 10G and 20G, the shaft portion 72 faces the pressure receiving surface 10 </ b> G, and the pressure receiving surface 10 </ b> G is pressed forward by the shaft portion 72. The urging force accompanying the pressing remains in the assembled state, the outer surface of the engaging claw 10F is pressed against the inner surface of the recess 30D, and the engaging claw 10F can be engaged with the recess 30D with a stronger force. It becomes. Similarly, the shaft portion 72 faces the pressure receiving surface 20G, and the pressure receiving surface 20G is pressed backward by the shaft portion 72. The urging force accompanying the pressing remains in the assembled state, the outer surface of the engaging claw 20F is pressed against the inner surface of the recess 30E, and the engaging claw 20F can be engaged with the recess 30E with a stronger force. It becomes. These mechanisms are the same for the screw 70R (FIGS. 3 and 4) as another insertion member.

(Function and effect)
The front frame portion 30 and the rear frame portion 20 are integrated with each other in cooperation with the screw 70L and the front end portion 10B of the cushion panel 10 to constitute a side frame 50L. The same applies to the screw 70R and 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 constitute the cushion frame 4.

  In the present embodiment, the engagement claws 10F are engaged with the recesses 30D and the engagement claws 20F are engaged with the recesses 30E in such a manner that the screws 70L and 70R press the pressure receiving surfaces 10G and 20G. ing. By these engagements, the cushion panel 10, the rear frame part 20, and the front frame part 30 are integrated. Since 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 can be reduced by the amount of equipment for welding and processing costs for welding. It becomes possible to suppress. 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 pressure receiving surfaces 10G and 20G are substantially orthogonal to the straight line. The screws 70L and 70R press the pressure receiving surfaces 10G and 20G, and an urging force is generated along with the pressing. Since the substantially orthogonal relationship as described above is established, this urging force is efficiently utilized for the engagement between the engagement claw 10F and the recess 30D, and the engagement between the engagement claw 20F and the recess 30E. It is used for.

  For both screws 70L and 70R, the head 71 is provided outside the shaft 72 in the seat width direction. Each head 71 of the screws 70L and 70R comes into contact with the standing wall 10E of the cushion panel 10, the standing wall 20E of the rear frame 20 and the protrusion 30F of the front frame 30 from the outside in the seat width direction. The relative positions of the cushion panel 10, the rear frame portion 20, and the front frame portion 30 in the seat width direction can be defined. That is, by pressing the end surface on the shaft portion 72 side of the head portion 71 against the outer end surface of the standing wall portion 10E, the outer end surface of the standing wall portion 20E, and the outer end surface of the protruding portion 30F, these outer end surfaces are flush with each other. It is possible to align.

[First Modification]
In the above-described embodiment, the cushion panel 10 corresponds to a “first member”, the rear frame portion 20 corresponds to a “second member”, and the front frame portion 30 corresponds to a “third member”. On the other hand, in the embodiment shown in FIG. 8 (first modification), the cushion panel 10 corresponds to a “first member”, the front frame portion 30 corresponds to a “second member”, and the rear frame portion 20 It corresponds to a “third member”.

  As shown in FIG. 8, 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 upright wall portion 10J is provided between the base portion 10A and the engaging claw 10K, and the surface of the upright wall portion 10J located on the diagonally upper front side constitutes a pressure receiving surface 10G (first pressure receiving surface). Yes. The engaging claw 10K is provided on the upper portion of the standing wall portion 10J and is formed to face the rear side.

  The lower rear end portion 30C of the front frame portion 30 is provided with a standing wall portion 30J and an engagement claw 30K (second engagement claw). The upright wall portion 30J is provided between the lower surface portion 30A and the engaging claw 30K, and the surface of the upright wall portion 30J located on the diagonally upper rear side constitutes a pressure receiving surface 30G (second pressure receiving surface). . The engaging claw 30K is provided on the upper portion of the standing wall portion 30J and is formed to face the front side.

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

  The engagement claw 10K (first engagement claw) is disposed inside the recess 20M (first recess), and the engagement claw 30K (second engagement claw) is disposed inside the recess 20N (second recess). Is placed. A gap having a substantially cylindrical shape is formed between the inner surface 20U of the lower front end portion 20B, the pressure receiving surface 10G of the front end portion 10B, and the pressure receiving surface 30G of the lower rear end portion 30C. A screw 70L is inserted into the gap from the outside in the sheet width direction.

  In a state where the engaging claw 10K is disposed inside the recess 20M, the engaging claw 30K is disposed inside the recess 20N, and the screw 70L is disposed in the gap, the pressure receiving surface 10G is inclined downward by the shaft portion 72. It is pushed backward. The urging force accompanying the pressing remains in the assembled state, the outer surface of the engaging claw 10K is pressed against the inner surface of the recess 20M, and the engaging claw 10K can be engaged with the recess 20M with a stronger force. It becomes. Similarly, the pressure receiving surface 30 </ b> G is pressed diagonally downward and forward by the shaft portion 72. The urging force accompanying the pressing remains in the assembled state, the outer surface of the engagement claw 30K is pressed against the inner surface of the recess 20N, and the engagement claw 30K can be engaged with the recess 20N with a stronger force. It becomes. These mechanisms are the same for the screw 70R. These members constituting the frame of the vehicle seat can be joined to each other without using a welding method.

[Second Modification]
In the aspect (second modification) shown in FIG. 9, the front frame portion 30 corresponds to a “first member”, the rear frame portion 20 corresponds to a “second member”, and the cushion panel 10 corresponds to a “third member”. Corresponds to “member”.

  As shown in FIG. 9, the lower rear end portion 30 </ b> C of the front frame portion 30 is provided with a standing wall portion 30 </ b> J and an engagement claw 30 </ b> K (first engagement claw). The upright wall portion 30J is provided between the lower surface portion 30A and the engaging claw 30K, and the surface of the upright wall portion 30J located on the diagonally lower rear side constitutes a pressure receiving surface 30G (first pressure receiving surface). . The engaging claw 30K is provided at the lower portion of the standing wall portion 30J and is formed 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 engagement claw 20K (second engagement claw). The upright wall portion 20J is provided between the lower surface portion 20A and the engaging claw 20K, and the surface of the upright wall portion 20J located on the diagonally lower front side constitutes a pressure receiving surface 20G (second pressure receiving surface). . The engaging claw 20K is provided at the lower portion of the standing wall portion 20J and is formed to face the rear side.

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

  The engagement claw 30K (first engagement claw) is disposed inside the recess 10N (first recess), and the engagement claw 20K (second engagement claw) is disposed inside the recess 10M (second recess). Is placed. A gap having a substantially cylindrical shape is formed between the inner surface 10U of the front end portion 10B, the pressure receiving surface 30G of the lower rear end portion 30C, and the pressure receiving surface 20G of the lower front end portion 20B. A screw 70L is inserted into the gap from the outside in the sheet width direction.

  In a state where the engaging claw 30K is disposed inside the recess 10N, the engaging claw 20K is disposed inside the recess 10M, and the screw 70L is disposed in the gap, the pressure receiving surface 30G is inclined upward by the shaft portion 72. Pressed forward. The urging force accompanying the pressing remains in the assembled state, the outer surface of the engaging claw 30K is pressed against the inner surface of the recess 10N, and the engaging claw 30K can be engaged with the recess 10N with a stronger force. It becomes. Similarly, the pressure receiving surface 20G is pressed obliquely upward and rearward by the shaft portion 72. The urging force accompanying the pressing remains in the assembled state, the outer surface of the engaging claw 20K is pressed against the inner surface of the recess 10M, and the engaging claw 20K can be engaged with the recess 10M with a stronger force. It becomes. These mechanisms are the same for the screw 70R. These members constituting the frame of the vehicle seat can be joined to each other without using a welding method.

  Although the embodiment has been described above, the above disclosure is illustrative in all respects and is not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 Seat Cushion, 2 Seat Back, 3 Seat Frame, 4 Cushion Frame, 5 Back Frame, 10 Cushion Panel, 10A Base, 10B, 40B Front End, 10C, 20C, 40C Rear End, 10D, 20D Rib, 10E , 10J, 20E, 20J, 30J Standing wall, 10F, 10K, 20F, 20K, 30K Engagement claw, 10G, 20G, 30G Pressure receiving surface, 10M, 10N, 20M, 20N, 30D, 30E Recess, 10U, 20U Surface, 20 rear frame portion, 20A, 30A, 40A lower surface portion, 20B, 30B lower front end portion, 20L, 30L, 40L support rib, 20P, 30P, 40P upper surface portion, 20Q, 30Q upper front end portion, 20R connecting portion, 30 Front frame part, 30C Lower rear end part, 30F Projection part, 30 Upper rear end, 40 front panel, 40G fitting groove, 40Q intermediate connection portion, 40R curved portion, 50L, 50R side frame, 70L, 70R bis, 71 head, 72 shaft portion, 100 vehicle seat, S gap.

Claims (7)

A seat cushion and a seat back;
A seat frame that forms a skeleton of the seat cushion and the seat back,
The seat frame is
A first member provided with a first engagement claw and a first pressure receiving surface;
A second member provided with a second engagement claw and a second pressure receiving surface;
A third member provided with a first recess and a second recess;
An insertion member disposed so as to face the first pressure receiving surface and the second pressure receiving surface;
The first engagement claw is arranged inside the first recess, the second engagement claw is arranged inside the second recess, and the insertion member is connected to the first pressure receiving surface and the first 2 by pressing the pressure receiving surface, the first engagement claw is engaged with the first recess, and the second engagement claw is engaged with the second recess.
Vehicle seat. The first recess and the second recess are formed to face each other,
The vehicle seat according to claim 1. The insertion member is
A shaft portion inserted between the first pressure receiving surface and the second pressure receiving surface;
It is provided on the outer side in the sheet width direction of the shaft portion, and contacts the first member, the second member, and the third member from the outer side in the sheet width direction, so that the first member, the second member, and the A head that defines a relative position in the sheet width direction with respect to the third member;
The vehicle seat according to claim 1 or 2. The first member is a cushion panel disposed between a pair of side frames, and the first engagement claw and the first pressure receiving surface are provided at a 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 frame The pressure receiving surface is provided at the lower front end,
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 recess and the second recess. Is provided at the lower rear end,
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 an open lower side, and the first recess and the second recess 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 disposed 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 configured by being cut out from an extruded material made of aluminum alloy or magnesium alloy having a constant cross-sectional shape in a direction orthogonal to the sheet width direction. Being
The vehicle seat according to any one of claims 1 to 6.

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