JP5597126B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat such as a vehicle seat.

  As a vehicle seat such as a vehicle seat, for example, as described in Patent Document 1, a cushion frame (sitting frame) that constitutes a seating portion on which an occupant sits, and a back frame (seat back) that constitutes a seat back And a frame) are known. The vehicle seat described in Patent Document 1 includes a pipe-like rear member (connecting member), and both ends of the connecting member are formed in the rear portions of the pair of left and right side frames of the seating frame. The pair of side frames are connected by being inserted into the holes.

JP 2008-49804 A (FIGS. 1 and 2)

  By the way, when the vehicle collides on the rear surface of the vehicle, such as when the vehicle is rear-end collision or rear-end collision, so-called rear-surface collision, a load is applied to the seat back (seat back frame) from the occupant to the rear. Become. This load is transmitted around the axis of the seat back frame through the side frame and is applied to the connecting member inserted into the side frame (see the arrow in FIG. 6). There was a possibility of deforming like crushing.

  Moreover, since the conventional connection member was only inserted into the through holes of the side frame, a squeak noise may occur.

  The present invention has been made in view of the background as described above, and an object of the present invention is to provide a vehicle seat that can suppress deformation of a connecting member and generation of squeak noise at the time of a rear collision.

  The vehicle seat of the present invention that achieves the above-described object includes a seating frame having a pair of left and right side frames, a seat back frame provided at a rear portion of the pair of side frames, and the pair of seats below the seat back frame. A connecting member for connecting the side frames of the vehicle, wherein the connecting member extends in the left-right direction and is disposed between the pair of side frames, and both ends of the pipe member. And a pair of pin-shaped members fixed directly to the side frame in a state of penetrating the side frame, and the pin-shaped member has a penetrating portion fixed in a state of penetrating the side frame. It is characterized by being solid.

  According to such a configuration, since the penetrating portion of the pin-like member that is fixed in a state of penetrating the side frame is solid, even if a load is applied to the pin-like member (connecting member) at the time of a rear surface collision, the pin-like member may collapse. Since there is nothing, the deformation of the connecting member can be suppressed. Moreover, according to the said structure, since the both ends (a pair of pin-shaped member) of a connection member are directly fixed to a side frame, generation | occurrence | production of a squeak noise can be suppressed.

  The vehicle seat includes a lower rail that is fixed to a vehicle floor and extends long in the front-rear direction, and an upper rail that is slidable back and forth with respect to the lower rail by engaging with the lower rail. Has a plate-like mounting portion that extends in the front-rear direction and is fixed to the side frame, and the side frame has the left and right outer end surfaces of the pin-shaped member abutted against the left and right inner surfaces of the mounting portion. It can be set as the structure currently fixed to the said attaching part in the state.

  According to such a configuration, the rigidity of the entire vehicle seat can be improved because the end surface of the pin-shaped member fixed to the side frame is fixed to the mounting portion in a state of being abutted against the mounting portion. . Thereby, the deformation | transformation of a connection member at the time of a rear surface collision and generation | occurrence | production of a squeak noise can be suppressed more reliably.

  Further, in the vehicle seat fixed to the mounting portion in a state where the end surface of the pin-shaped member is abutted against the mounting portion, the pin-shaped member has a female screw portion formed on the left and right outer end surfaces, It can be set as the structure from which the said penetration part becomes solid by being fixed to the said attachment part by the fastening member which has an external thread part.

  According to such a configuration, the pin-shaped member (the seating frame to which the connecting member is fixed) and the attachment portion (upper rail) can be fixed without welding. This prevents welding spatter from adhering to or entering the lower rail when the single upper rail or the upper rail engaged with the lower rail is fixed to the seating frame. be able to. As a result, it is possible to suppress the entry of foreign matter due to welding spatter between the lower rail and the upper rail, so that it is possible to suppress a failure in sliding operation of the upper rail (vehicle seat). Further, according to the above configuration, since the penetration portion becomes solid by fastening the male screw portion of the fastening member to the female screw portion of the pin-like member, even in the configuration in which the fixing female screw portion is formed on the pin-like member. In addition, it is possible to suppress deformation of the connecting member at the time of a rear collision.

  Further, in the vehicle seat that is fixed to the mounting portion in a state where the end surface of the pin-shaped member is abutted against the mounting portion, the pin-shaped member has caulking protrusions formed on the left and right outer end surfaces. In addition, the caulking protrusion may be inserted into a through-hole provided in the attachment portion, and the tip may be caulked to be fixed to the attachment portion.

  Even with such a configuration, the pin-like member (the seating frame to which the connecting member is fixed) and the mounting portion (upper rail) can be fixed without welding, so that foreign matter enters between the lower rail and the upper rail. Can be suppressed, and the failure of the sliding operation of the vehicle seat can be suppressed.

  According to the structure of Claim 1, since the penetration part of the pin-shaped member fixed in the state which penetrated the side frame is solid, a deformation | transformation of the connection member at the time of a rear surface collision can be suppressed. Moreover, since both ends of the connecting member are directly fixed to the side frame, generation of squeak noise can be suppressed.

  According to the structure of Claim 2, since the rigidity of the whole vehicle seat can be improved, a deformation | transformation of a connection member at the time of a rear surface collision and generation | occurrence | production of a squeak noise can be suppressed more reliably.

  According to the configuration of the third aspect, since the seating frame to which the connecting member is fixed and the upper rail can be fixed without welding, it is possible to prevent foreign matter from entering between the lower rail and the upper rail. It is possible to suppress the failure of the sliding operation of the sheet. Even in the configuration in which the fixing female screw portion is formed on the pin-shaped member, it is possible to suppress the deformation of the connecting member at the time of the rear collision.

  According to the configuration of the fourth aspect, since the seating frame to which the connecting member is fixed and the upper rail can be fixed without welding, it is possible to suppress foreign matter from entering between the lower rail and the upper rail, and the vehicle. It is possible to suppress the failure of the sliding operation of the sheet.

1 is a perspective view of a vehicle seat according to an embodiment of the present invention. It is a perspective view of a seat frame. It is a disassembled perspective view of a seat frame. It is IV-IV sectional drawing of FIG. It is explanatory drawing (a) which shows a mode that a connection pipe is welded to the connection pin which concerns on embodiment, and explanatory drawing (b), (c) which shows a mode that a connection pipe is welded to the connection pin which concerns on a comparative example. It is a side view which shows the state of the vehicle seat at the time of a rear collision. It is explanatory drawing of the connection pin which concerns on a modification.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present invention, front and rear, left and right, and top and bottom are based on an occupant sitting on a vehicle seat.
As shown in FIG. 1, a vehicle seat S as an example of a vehicle seat mainly includes a seating portion S1, a seat back S2, and a headrest S3.

  The vehicle seat S includes a seat frame F as shown in FIG. The seat frame F mainly includes a seating frame 1 that is a frame of the seating portion S1, a seatback frame 2 that is a frame of the seatback S2, and a connecting member 3. The vehicle seat S includes a lower rail 4 and an upper rail 5, and is configured to be slidable back and forth.

  The seat S1 and the seat back S2 of the vehicle seat S shown in FIG. 1 are configured by covering a cushion and an outer skin on the outside of the seat frame 1 and the seat back frame 2. And the vehicle seat S shown in FIG. 1 is comprised by attaching headrest S3 to the pillar support part 25 which the seat back frame 2 mentions later.

  As shown in FIGS. 2 and 3, the seating frame 1 mainly has a pair of left and right side frames 11 and a front frame 12 that connects the front portions of the side frames 11, and the rear portions of the pair of side frames 11 are connected. It is configured in a substantially frame shape by being connected by the member 3.

  The seat back frame 2 is provided at the rear portion of the seating frame 1 (a pair of side frames 11), and a pair of left and right seat back side frames 21 and an upper frame 22 that connects the upper portions of the pair of seat back side frames 21; The lower frame 23 that connects the lower ends is mainly formed in a substantially frame shape. In the seat back frame 2, a pair of seat back side frames 21 are connected to the rear portion of the seating frame 1 (the pair of side frames 11) via a reclining mechanism 24, and the swinging shaft 24A is centered with respect to the seating frame 1. As shown in FIG. The upper frame 22 is provided with a pillar support portion 25 for attaching the headrest S3.

  A plate-shaped pressure receiving member 26 is disposed between the pair of seat back side frames 21 of the seat back frame 2 and is attached to the seat back side frame 21 via a connecting wire (reference numeral omitted). The pressure receiving member 26 is subjected to a rearward collision of the vehicle, such as a rear collision of the vehicle or a rearward collision of the vehicle, so that a rearward load of a predetermined amount or more is applied from the occupant during a so-called rear collision. Move backwards. As a result, the upper body of the occupant sinks backward, making it possible to mitigate the influence of the load at the time of rear-end collision on the occupant.

  Two lower rails 4 are provided below the seating frame 1 at a predetermined interval on the left and right sides. The lower rail 4 mainly includes a rail body 41 that extends long in the front-rear direction, a front bracket 42, and a rear bracket 43. ing. Each lower rail 4 is fixed to the floor of the vehicle (vehicle) by a front bracket 42 and a rear bracket 43.

  One upper rail 5 is provided corresponding to each lower rail 4 (two in total), and mainly includes a rail body 51 that extends long in the front-rear direction and a mounting plate 52 as an example of a plate-shaped mounting portion. It is configured. As shown in FIG. 4, the upper rail 5 is slidable back and forth with respect to the lower rail 4 (vehicle floor) by the rail main body 51 engaging with the rail main body 41 of the lower rail 4.

  The mounting plate 52 is formed by bending a metal plate that extends long in the front-rear direction into a substantially L shape, and its lower portion (folded portion 52C) is fixed to the upper surface of the rail body 51 by welding or the like. As shown in FIGS. 2 and 3, the mounting plate 52 is fixed to the side frame 11 (sitting frame 1) by pins 8 and bolts 9 described later. As a result, the vehicle seat S is slidable back and forth with respect to the vehicle floor.

  In the present embodiment, the fixing plate 52 and the side frame 11 are fixed by the pin 8 by inserting the pin 8 into the through holes 11B and 52B provided in the side frame 11 and the mounting plate 52, respectively. It is made by tightening.

  The connecting member 3 is a member that connects the pair of side frames 11 at the rear portion of the side frame 11, more specifically, below the seat back frame 2 (in the vicinity of the obliquely lower front side of the swing shaft 24A), and is an example of a pipe member. And a connection pin 32 as an example of a pair of pin-shaped members. The connecting member 3 is formed by fixing a pair of connecting pins 32 to both ends of the connecting pipe 31 by welding.

  The connection pipe 31 is a substantially cylindrical pipe that extends in the left-right direction. For example, after bending a flat metal plate into a cylindrical shape and welding the abutted end surfaces, the welding beam on the outer peripheral surface is removed. Is formed. As shown in FIG. 4, the connecting pipe 31 is disposed between the pair of side frames 11 when the connecting member 3 is fixed to the pair of side frames 11. In FIG. 4, only one end side of the connecting member 3 is shown.

  The connection pin 32 is a member fixed to both ends of the connection pipe 31 by welding, and mainly includes an insertion portion 33 and a through portion 34. When the connecting member 3 is fixed to the pair of side frames 11, the connecting pin 32 is engaged with the through hole 11 </ b> A provided in the side frame 11 and penetrates the side frame 11. It is directly fixed to the side frame 11 by welding.

  The insertion portion 33 is a substantially cylindrical portion that enters both ends (end portions) of the connection pipe 31, and has an outer diameter smaller than the inner diameter of the connection pipe 31. Thus, when the insertion portion 33 is inserted into the end portion of the connection pipe 31, a gap (play) is formed between the outer peripheral surface of the insertion portion 33 and the inner peripheral surface of the connection pipe 31. Even when a welding beam remains on the inner peripheral surface, the axes of the connection pipe 31 and the connection pin 32 can be aligned.

  The through portion 34 is a portion that is fixed to the side frame 11 in a state of penetrating the side frame 11 when the connecting member 3 is fixed to the pair of side frames 11, and has a larger diameter than the insertion portion 33. It is formed in a cylindrical shape. The penetrating portion 34 (the connecting pin 32) is provided with a hole having a shape recessed toward the left and right inner sides on the left and right outer end surfaces (outer end surface 32A), and a female screw portion 32B is formed on the inner peripheral surface of the hole. ing. The female screw portion 32B is an example of a fastening member having a male screw portion 91 when the seating frame 1 (side frame 11 to which the connecting member 3 is fixed) and the upper rail 5 (mounting plate 52) are fixed. The bolt 9 is screwed.

  Further, the penetrating portion 34 is formed with an inclined surface 34 </ b> A that is inclined at the inner left and right end portions (the portion facing the end surface 31 </ b> A of the connecting pipe 31) so as to reduce the diameter from the left and right outer sides toward the inner side. ing. In the present embodiment, the connecting member 3 has the connecting pipe 31 fixed to the pair of connecting pins 32 and the inclined surface 34A by welding.

  Such a connecting member 3 has a pair of connecting pins 32 (outer end face 32A) inserted by inserting insertion portions 33 of a pair of connecting pins 32 into both ends (only one end side is shown) of the connecting pipe 31. ) Is adjusted in accordance with the distance between the left and right of the pair of side frames 11, or the axis of the connection pipe 31 and the axis of each connection pin 32 are aligned, and then the connection pipe 31 and the pair of connection pins 32 are moved. It can be formed by fixing by welding.

  Here, as in the connection pin 32 ′ of the comparative example shown in FIG. 5B, when the left and right inner end portions (end surface 34 A ′) of the penetrating portion 34 are substantially parallel to the end surface 31 A of the connection pipe 31, When the distance between the end surface 31A and the end surface 34A ′ is reduced, the welding torch T may come into contact with the relatively thin connection pipe 31 and the connection pipe 31 may be melted down. Further, as shown in FIG. 5C, in the connection pin 32 ′ of the comparative example, when the distance between the end surface 31 </ b> A of the connection pipe 31 and the end surface 34 </ b> A ′ of the through portion 34 increases, the connection pin 32 ′ is connected to the outer peripheral surface of the insertion portion 33. There may be a gap between the inner peripheral surface of the pipe 31 and it becomes difficult to join the connecting pipe 31 by welding.

  Further, when the end surface 34A ′ of the connection pin 32 ′ is parallel to the end surface 31A of the connection pipe 31, as described above, the distance between the end surface 34A ′ and the end surface 31A becomes important during welding. Considering that the distance between the pair of side frames 11 to be attached is determined to some extent, it is necessary to make the lengths of the connecting pipes 31 uniform, so that the dimensional accuracy of the length of the connecting pipes 31 is required.

  On the other hand, as shown in FIG. 5A, the connecting pin 32 of the present embodiment is formed with an inclined surface 34 </ b> A that is inclined so as to be reduced in diameter toward the insertion portion 33 at the left and right inner ends of the through portion 34. Therefore, even if the distance between the end surface 31A and the inclined surface 34A in the longitudinal direction of the connecting pipe 31 is reduced, the connecting pipe 31 is radially outside the opposing portion 34B facing the end surface 31A of the inclined surface 34A (see FIG. 5 (a), the surface located on the right side of the facing portion 34B) is expanded toward the outer side in the longitudinal direction of the connecting pipe 31 (the right side in FIG. 5). By bringing the torch T closer, the welding torch T can be prevented from touching the connecting pipe 31.

  Further, in the longitudinal direction of the connecting pipe 31, even if the distance between the end surface 31A and the inclined surface 34A is large (for example, even when the distance D is the same as that in FIG. 5C), the connecting pipe is more than the facing portion 34B. The surface located on the radially inner side of 31 (left side of the opposed portion 34B in FIG. 5A) is inclined so as to be reduced in diameter toward the insertion portion 33, and therefore, shown in FIG. Compared to the configuration of the comparative example, the connection pipe 31 is approached (the distance between the connection pipe 31 and the connection pin 32 can be reduced), and the connection pipe 31 and the connection pin 32 are easily joined by welding.

  That is, the connection pin 32 of this embodiment can weld the connection pipe 31 and the connection pin 32 easily compared with the connection pin 32 'of a comparative example. In addition, since the connecting pin 32 of the present embodiment can be welded without any problem even if the distance between the end surface 31A and the inclined surface 34A during welding varies to some extent for each connecting pipe 31, the length dimension of the connecting pipe 31 can be obtained. Variations in accuracy can be tolerated to some extent.

  Furthermore, the connecting pin 32 of the present embodiment is formed with an inclined surface 34A that is inclined so as to be reduced in diameter toward the insertion portion 33 at a portion facing the end surface 31A of the penetrating portion 34. The molten material can flow between the inner peripheral surface of the connection pipe 31 and the insertion portion 33 along the inclined surface 34A (see FIG. 4). Thereby, since the joining area of the connection pipe 31 and the connection pin 32 can be enlarged, the connection pipe 31 and the connection pin 32 can be firmly fixed.

Next, the assembly of the vehicle seat S will be briefly described.
As shown in FIG. 3, first, the pair of side frames 11 are connected by the connecting member 3 to form the seating frame 1. At this time, both ends of the connecting member 3 (the through portions 34 of the pair of connecting pins 32) are engaged with each other through the through holes 11A provided in the side frame 11 as shown in FIG. Directly fixed by welding. Thereafter, the seat back frame 2 is connected to the rear portion of the seating frame 1 (the pair of side frames 11).

  In the present embodiment, both ends (a pair of connecting pins 32) of the connecting member 3 are directly fixed to the side frame 11 by welding, so that the structure is different from a configuration in which the connecting member 3 is simply inserted into the through hole 11A of the side frame 11. Generation of sound can be suppressed.

  Next, the upper rail 5 is fixed to the seating frame 1 (each side frame 11). At this time, the upper rail 5 may be in a state of being engaged with the lower rail 4 or may be a single body (a state of not being engaged with the lower rail 4).

  More specifically, the side frame 11 is configured such that the outer end face 32A of the connecting member 3 (connecting pin 32) is abutted against the left and right inner faces (inner side face 52D) of the mounting plate 52 of the upper rail 5. 9 is fixed to the mounting plate 52 (upper rail 5) by fastening the male screw portion 91 and the female screw portion 32B of the connecting pin 32. At this time, since the connecting pin 32 is fixed to the mounting plate 52 by the bolt 9, the hole provided in the through portion 34 is filled with the male screw portion 91 of the bolt 9. The portion overlapping the frame 11 is solid.

  Further, as shown in FIGS. 2 and 3, each side frame 11 is fixed to the mounting plate 52 with three pins 8 at a portion in front of the through hole 11 </ b> A. As described above, the fixing of the side frame 11 and the mounting plate 52 by the pin 8 is performed by inserting the pin 8 into the through holes 11B and 52B provided in the side frame 11 and the mounting plate 52, respectively, and caulking the tip. Made.

  Then, the vehicle seat S shown in FIG. 1 is assembled by covering the outer side of the seating frame 1 and the seat back frame 2 with a cushion and an outer skin and attaching the headrest S3. The vehicle seat S assembled in this way is attached to the vehicle by fixing the lower rail 4 to the floor of the vehicle with a bolt or the like.

  In the present embodiment, the side frame 11 (the seating frame 1) and the mounting plate 52 (the upper rail 5) are fixed by the pins 8 and the bolts 9 without welding, so that welding spatter adheres to the upper rail 5. Or entering the lower rail 4 can be prevented. Thereby, since it can suppress that the foreign material resulting from welding spatter | penetration enters between the lower rail 4 and the upper rail 5, the malfunction of the sliding operation | movement of the vehicle seat S can be suppressed.

  Further, as shown in FIG. 6, in the vehicle seat S, a load is applied to the seat back frame 2 from the occupant H rearward in the case of a rear collision, and this load is transmitted around the swing shaft 24 </ b> A via the side frame 11. In this embodiment, as shown in FIG. 4, the connection pin 32 penetrates the side frame 11, and is applied to both ends of the connection member 3 (the through portion 34 of the connection pin 32). Since the penetrating part 34 fixed in this state is solid, even if a load is applied to the connecting pin 32 (the connecting member 3) at the time of a rear collision, it does not collapse. Thereby, a deformation | transformation of the connection member 3 at the time of a rear surface collision can be suppressed.

  Furthermore, in this embodiment, since the outer end surface 32A of the connecting pin 32 fixed to the side frame 11 is fixed to the mounting plate 52 in a state of being abutted against the mounting plate 52, the rigidity of the entire vehicle seat S is increased. It can be improved. Thereby, the deformation | transformation of the connection member 3 at the time of a rear surface collision and generation | occurrence | production of a squeak noise can be suppressed more reliably.

The effects of the vehicle seat S according to this embodiment will be summarized below.
Since the penetrating portion 34 of the connecting pin 32 fixed in a state of penetrating the side frame 11 is solid, deformation of the connecting member 3 at the time of a rear collision can be suppressed. Moreover, since the both ends (connection pin 32) of the connection member 3 are directly fixed to the side frame 11 by welding, generation | occurrence | production of a squeak noise can be suppressed.

  Since the side frame 11 is fixed to the mounting plate 52 in a state in which the outer end surface 32A of the connecting pin 32 is abutted against the mounting plate 52, the rigidity of the entire vehicle seat S can be improved, and at the time of rear collision The deformation of the connecting member 3 and the occurrence of squeak noise can be more reliably suppressed.

  Since the seat frame 1 to which the connecting member 3 is fixed and the upper rail 5 are fixed without welding by the pins 8 and the bolts 9, foreign matter can be prevented from entering between the lower rail 4 and the upper rail 5. The failure of the sliding operation of the sheet S can be suppressed. Further, since the connecting pin 32 is fixed to the mounting plate 52 by the bolt 9 so that the through portion 34 is solid, even in the configuration in which the fixing female screw portion 32B is formed on the connecting pin 32, the rear end collision is also caused. Deformation of the connecting member 3 can be suppressed.

  Since the inclined surface 34A inclined so as to reduce the diameter toward the insertion portion 33 is formed at the left and right inner ends of the through portion 34, the connection pipe 31 and the connection pin 32 can be easily welded, Variation in the dimensional accuracy of the length of the connecting pipe 31 can be allowed to some extent. Moreover, since the melted material can flow between the inner peripheral surface of the connection pipe 31 and the insertion portion 33 along the inclined surface 34A during welding, the connection pipe 31 and the connection pin 32 can be firmly fixed. it can.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of this invention.

  In the above-described embodiment, the connecting pin 32 (pin-shaped member) has the female threaded portion 32B formed on the outer end surface 32A and is fixed to the mounting plate 52 by the bolt 9 having the male threaded portion 91, so that the penetrating portion 34 is solid. However, the present invention is not limited to this. That is, the penetrating portion of the pin-shaped member of the present invention may be formed solid from the beginning (see, for example, the connecting pin 32 shown in FIG. 7).

  In the above embodiment, the fixing by the bolt 9 is exemplified as a method of fixing the connecting pin 32 (side frame 11) and the mounting plate 52 (upper rail 5) without welding, but the present invention is limited to this. is not. For example, the connecting pin 32 and the mounting plate 52 may be fixed by caulking a part of the connecting pin 32 (the tip of the caulking projection 35). Specifically, as shown in FIG. 7, the connecting pin 32 (pin-shaped member) used at this time has a caulking projection 35 formed on the outer end face 32A (left and right outer end faces). Then, the caulking projection 35 is inserted into a through hole 52A provided in the mounting plate 52, and the tip of the caulking projection 35 is caulked to connect the connecting pin 32 (the seating frame to which the connecting member 3 is fixed). 1) can be fixed to the mounting plate 52.

  Even with such a configuration, the seating frame 1 to which the connecting member 3 is fixed and the mounting plate 52 (upper rail 5) can be fixed without welding, so that foreign matter enters between the lower rail 4 and the upper rail 5. And the failure of the sliding operation of the vehicle seat S can be suppressed.

  In the embodiment, the side frame 11 and the mounting plate 52 (mounting portion) are formed by the bolt 9 in a state where the outer end surface 32A of the connecting pin 32 (pin-shaped member) is abutted against the inner side surface 52D of the mounting plate 52. Although they are fixed to each other at the position of the connecting pin 32, the present invention is not limited to this. For example, the side frame and the attachment portion may be fixed to each other at a position different from the pin-shaped member (for example, only the pin 8 of the embodiment).

  In the above embodiment, the upper rail 5 mainly has a two-part configuration including the rail body 51 and the mounting plate 52, but the present invention is not limited to this. For example, the rail body and the mounting plate (mounting portion) ) May be configured integrally (as one component).

  The configuration of the seating frame 1, the seat back frame 2, the lower rail 4 and the upper rail 5 shown in the above embodiment is an example, and the present invention is not limited to this. That is, the detailed configuration of each member can be changed as appropriate without departing from the spirit of the present invention. For example, the seat back frame 2 of the embodiment may have a configuration in which the pressure receiving member 26 is not provided. In addition, the seating frame 1 may be provided with a height adjustment mechanism for adjusting the height of the seating portion S1.

  In the above-described embodiment, a vehicle seat such as an automobile is shown as an application example of the vehicle seat. You can also

  In the embodiment, the vehicle seat S (vehicle seat) includes the lower rail 4 and the upper rail 5 and is configured to be slidable back and forth. However, the present invention is not limited to this. For example, the vehicle seat of the present invention may have a configuration that does not include the lower rail and the upper rail (a configuration that does not slide and move back and forth).

  In the embodiment, the vehicle seat S (vehicle seat) includes the reclining mechanism 24, but the present invention is not limited to this. For example, the vehicle seat of the present invention may be configured not to include a reclining mechanism. In this case, the seating frame and the seat back frame (the side frame 11 and the seat back side frame 21 of the above-described embodiment) may be integrally formed.

DESCRIPTION OF SYMBOLS 1 Seating frame 2 Seat back frame 3 Connection member 4 Lower rail 5 Upper rail 9 Bolt 11 Side frame 31 Connection pipe 31A End surface 32 Connection pin 32A Outer end surface 32B Female thread part 33 Insertion part 34 Through part 34A Inclined surface 35 Caulking protrusion 52 Attachment Plate 52A Through-hole 91 Male thread F Seat frame S Vehicle seat

Claims (4)

A seating frame having a pair of left and right side frames;
A seat back frame provided at the rear of the pair of side frames;
A vehicle seat comprising: a connecting member that connects the pair of side frames below the seat back frame;
The connecting member is
A pipe member extending in the left-right direction and disposed between the pair of side frames;
A pair of pin-shaped members fixed to both ends of the pipe member and directly fixed to the side frame in a state of penetrating the side frame;
The vehicle seat according to claim 1, wherein the pin-shaped member has a solid penetrating portion fixed in a state of penetrating the side frame. A lower rail fixed to the floor of the vehicle and extending forward and backward,
An upper rail that can slide back and forth with respect to the lower rail by engaging with the lower rail;
The upper rail extends in the front-rear direction and has a plate-like attachment portion fixed to the side frame,
2. The vehicle according to claim 1, wherein the side frame is fixed to the mounting portion in a state in which left and right outer end surfaces of the pin-shaped member are abutted against the left and right inner surfaces of the mounting portion. Sheet.   The pin-shaped member has a female screw portion formed on the left and right outer end surfaces, and is fixed to the attachment portion by a fastening member having a male screw portion, whereby the penetrating portion becomes solid. Item 3. The vehicle seat according to Item 2.   The pin-shaped member has a caulking projection formed on the left and right outer end surfaces, and the caulking projection is inserted into a through hole provided in the mounting portion, and the tip is caulked to the mounting portion. The vehicle seat according to claim 2, wherein the vehicle seat is fixed.

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