JP6527556B2 - Vehicle seat - Google Patents

Description

  The present disclosure relates to a vehicle seat and is applicable to a vehicle seat having a riser.

  In the case of installing a seat in a vehicle such as an automobile, a seat support structure (riser) is installed between the vehicle seat and the floor of the vehicle in order to ensure comfort when seated, and a seat cushion is provided. The seating position of the floor is raised to some extent from the floor. Also, in general, it has been considered to increase the rigidity of the seat support structure in order to prevent the seat from falling when an impact is applied to the vehicle and a large load is applied to the seat. As a thing which solves such a subject, there exists a sheet | seat support structure of Unexamined-Japanese-Patent No. 2009-262721, for example.

JP, 2009-262721, A

However, the demand for the safety of the vehicle is further increasing, and development of a vehicle seat which makes the seat more difficult to fall when a large load is applied to the seat is desired.
An object of the present disclosure is to provide a vehicle seat that is less likely to fall down than ever before.

The outline of typical ones of the present disclosure will be briefly described as follows.
That is, the vehicle seat includes a seat cushion and a riser for supporting the seat cushion at a predetermined height. The riser extends in the front-rear direction of the vehicle, extends in the vehicle width direction of the vehicle, and a pair of support portions disposed apart in the vehicle width direction, and connects the pair of seat support portions to each other And a unit. The connecting portion includes a connecting member and a pair of brackets fixed respectively to both ends of the connecting member. The connecting member is fixed to each of the pair of brackets by one fixing member.

  According to the vehicle seat, when a large load is applied to the seat, the seat is further less likely to fall down.

It is a figure for demonstrating the example of the structure of a vehicle seat. It is a perspective view from the right front side of the seat frame of the vehicle seat of FIG. It is a side view from the right side of the seat frame of the vehicle seat of FIG. It is a top view from the upper side of the seat frame of the vehicle seat of FIG. It is a perspective view from the left front of a riser, a seat slide adjustment device, and a seat cushion frame. It is a front view of a riser, a seat slide adjustment device, and a seat cushion frame. It is a schematic diagram of a structure of FIG. FIG. 7 is a top view of the riser, seat slide adjustment device and seat cushion frame of FIG. 6; FIG. 9 is a cross-sectional view taken along the line AA of FIG. It is a figure which shows the internal structure of the vehicle seat which concerns on a comparative example, and is a front view of a riser, a seat slide adjustment apparatus, and a seat cushion frame. FIG. 11 is a schematic view of the configuration of FIG.

  Hereinafter, examples will be described using the drawings. However, in the following description, the same components may be assigned the same reference numerals and repeated descriptions may be omitted. Note that the drawings may be schematically represented as to the width, thickness, shape, etc. of each portion in comparison with the actual embodiment in order to clarify the description, but this is merely an example, and the interpretation of the present invention is not limited. It is not limited.

  FIG. 1 is a perspective view from the right front side of a vehicle seat. In order to facilitate understanding of the structure of the vehicle seat 1, the directions of “front”, “rear”, “left”, “right”, “upper” and “lower” are shown in the figure, and these directions Is also used to express relative positional relationship in the following description. Further, these directions correspond to the direction of the vehicle when the vehicle seat 1 is mounted on the vehicle. For example, the forward direction of the vehicle seat 1 and the forward direction of the vehicle indicate the same direction. The following describes the structure of the vehicle seat 1 suitable for the right front seat (for example, the driver's seat), but the vehicle seat 1 is also applicable to other seats. The vehicle seat mounted on the left side of the vehicle has a configuration in which the left and right of the vehicle seat 1 are switched.

  The vehicle seat 1 includes a seat cushion 10, a seat back 20, a headrest 30, a side cover 40, an operation lever 41, a riser 50, and a seat slide adjusting device 60. The seat cushion 10 forms a seating surface. The seat back 20 forms a backrest. The headrest 30 is disposed above the seatback 20 and forms a pillow for supporting the head of the occupant. The seat slide adjusting device 60 is fixed to the vehicle via the riser 50 and enables the seat cushion 10 to slide in the front-rear direction (position adjustment). In addition, the vehicle seat 1 has a reclining device (recliner) that enables angle adjustment between the seat cushion 10 and the seat back 20.

  The operation lever 41 is an operation unit for reclining operation, and receives the reclining operation of the vehicle seat 1.

  A retractor (not shown) of a seat belt device is fixedly installed on the upper right side of a vehicle seat 1 mounted on a vehicle. The webbing pulled out of the retractor is connected to an anchor portion (not shown) on the lower right side of the vehicle seat 1. A tongue plate (not shown) is inserted in the middle of the webbing pulled out of the retractor. The tongue plate is detachable with respect to the buckle 71 connected to the left side frame portion via an anchor portion (not shown).

(Seat frame)
FIG. 2 is a perspective view from the right front side of a seat frame of the vehicle seat of FIG. FIG. 3 is a side view of the vehicle seat of FIG. 2 as viewed from the right side of the seat frame. FIG. 4 is a top view from the upper side of the seat frame of the vehicle seat of FIG.

  The seat frame 100 is assembled by a seat cushion frame 110, a seat back frame 120 hinged to be reclined and adjustable to the seat cushion frame 110 by a reclining device 114, left and right seat slide adjusting devices 60, and left and right risers 50. The seat cushion 10 is assembled with a seat cushion frame 110, a seat cushion pad (not shown) and a skin (not shown), and the seat back 20 is a seat back frame 120, a seat back pad (not shown) and a skin (not shown) Can be assembled.

  The riser 50 includes a right support 50R, a left support 50L, and a connection 51. The right support 50R includes a front leg 52R and a rear leg 53R which are installed on the floor of the vehicle, and a reinforcement 54R. The left support 50L is similar to the right support 50R.

  The seat slide adjusting device 60 is a left slide rail 62L which is slidably fitted in and supported by the left guide rail 61L, the right guide rail 61R, the left guide rail 61L and the right guide rail 61R. The slide rail 62R, the lock mechanism 63, and the operation mechanism 64 are usually assembled.

  The left guide rail 61L and the right guide rail 61R of the seat slide adjusting device 60 are fixedly mounted on the left support portion 50L and the right support portion 50R, respectively, and the seat cushion frame 110 is mounted thereon. The cushion frame 110 is fixedly mounted to support the seat cushion 10.

  The seat cushion frame 110 is formed of a substantially rectangular frame body serving as a framework of the seat cushion 10, and as shown in FIG. 2, a left side frame 111L and a right side frame 111R respectively disposed on the left and right sides; A connecting pipe that connects the plate-like frame 112 installed on the upper surface on the front side of the left side frame 111L and the right side frame 111R and the inner side surfaces on the rear side of the left side frame 111L and the right side frame 111R And 113, and a connecting pipe 116 for connecting the inner surface on the front side.

  The left side frame 111L and the right side frame 111R are respectively formed of sheet metal members extending in the front-rear direction, and the left side frame 111L and the right side frame 111R are separated in the left-right direction in a substantially parallel state. doing.

  As shown in FIG. 2, a reclining device 114 rotatably connecting the seat back 20 to the seat cushion 10 is provided at a portion where the right side frame 111R and the seat back frame 120 are connected. The reclining device 114 includes, for example, a spiral spring (not shown) that biases the seat back frame 120 in the upright state, and a spring locking member (not shown) that locks the extension end of the spiral spring. There is. The right side frame 111R and the reclining device 114 are covered with a side cover 40.

  The seat back frame 120 includes a back frame body 121, a left side frame 122L, and a right side frame 122R.

  The back frame main body 121 is a frame member forming a framework of the seat back frame 120, and is formed by bending a cylindrical round pipe.

  The outer surface of the right side frame 122R is pivotally attached to the inner surface of the right side frame 111R. At this time, a reclining device 114 is assembled between these two surfaces. As a result, since the seat back frame 120 can be locked at a desired inclined position with respect to the seat cushion frame 110, the vehicle seat 1 can be provided with a reclining function.

  A pair of pillar guides 128 for inserting a pillar (not shown) of the head rest 30 is attached to the frame 121 b of the upper part of the back frame main body 121.

  A side cover 40 is attached to the right side frame 111R so as to cover (hide) the side portions of the seat cushion 10, the right side frame 111R, the right slide rail 62R, and the guide rail 61R. This attachment is removable, for example, by press-fitting projections (not shown) provided at a plurality of locations on the inner surface side of the side cover 40 into locking holes (not shown) formed in the right side frame 111R. Can do it.

  The side cover 40 is a molded product of synthetic resin, and has an attachment hole and a recess (not shown) formed therein, and the operation knob lever of the reclining device 114 on the front side through the through hole and the through hole provided to penetrate the recess. Etc. are protrusively provided for manual operation.

(Riser)
The risers will be described in more detail with reference to FIGS. FIG. 5 is a left front perspective view of the riser, the seat slide adjusting device and the seat cushion frame. FIG. 6 is a front view of a riser, a seat slide adjusting device and a seat cushion frame. 8 is a top view of the riser, seat slide adjusting device and seat cushion frame of FIG. FIG. 9 is a cross-sectional view taken along the line AA of FIG.

  The riser 50 is used, for example, to secure the height of the seat surface position of the front seat such as the driver's seat and the front passenger seat, and the right support 50R, the left support 50L, and the right The first supporting portion 50R and the left supporting portion 50L are mainly composed of one connecting portion 51.

  The riser 50 is installed between the floor of the vehicle and the seat slide adjusting device 60, and supports the seat cushion 10 on the floor. That is, the riser 50 is fixed to the floor by bolts and is connected to the seat cushion 10 via the seat slide adjusting device 60. The right support 50R and the left support 50L play a role of supporting the seat cushion 10.

  As shown in FIG. 2, the right support 50R and the left support 50L extend in the front-rear direction, and are spaced apart from each other in the left-right direction. The right support 50R includes a front leg 52R erected on the floor, a rear leg 53R erected on the floor and spaced apart on the rear side of the front leg 52R, a reinforcement 54R, Mainly composed of The left support 50L is similar to the right support 50R.

  As shown in FIGS. 3 and 4, the front leg 52R has a crank shape in a side view. The upper end of the front leg 52R is bent rearward, and one bolt insertion hole (not shown) is formed. Further, the lower end of the front leg 52R is bent to the front side, and a bolt insertion hole T2 is formed at the center thereof. The front leg 52L is similar to the front leg 52R.

  As shown in FIG. 3, the rear leg 53R has a crank shape in a side view. The upper end of the rear leg 53R is bent to the front side, and two bolt insertion holes (not shown) are formed. The lower end of the rear leg 53R is bent rearward, and a bolt insertion hole (not shown) is formed at the center thereof. The rear leg 53L is similar to the rear leg 53R.

  In addition, since the height of the floor is lower at the front than at the rear, the length in the vertical direction of the front leg 52R is longer than the rear leg 53R. Further, since the height of the floor is formed lower on the right side than on the left side, the length in the vertical direction of the front leg 52R is formed longer than the front leg 52L.

  The reinforcing portion 54R is formed such that the lower end is opened and the front end and the rear end are opened, and has a substantially U-shape in a front view. That is, the reinforcing portion 54R has an inner wall 54aR extending in the front-rear direction, an outer wall 54bR spaced apart on the outer side in the width direction of the inner wall 54aR (hereinafter referred to as "outside"), an inner wall 54aR and an outer wall 54bR And an upper wall (not shown) connecting the upper ends of the two. The inner wall 54aR, the outer wall 54bR, and the upper wall of the present embodiment are integrally formed.

  A through hole (not shown) penetrating in the left-right direction is formed on the front end side of the inner wall 54aR. The lower end of the inner wall 54aR is formed to be curved.

  A plurality of bolt insertion holes (not shown) are formed in the upper wall. The bolt insertion holes are formed at positions corresponding to the bolt insertion holes of the guide rail 61R and the bolt insertion holes of the front leg 52R and the rear leg 53R.

  The reinforcing portion 54R is disposed between the two legs so as to cover the upper and side portions of the front leg 52R and the rear leg 53R, and welded between the front leg 52R and the rear leg 53R by welding at a position covering the both sides. By stiffening, the rigidity of the riser 50 is enhanced. That is, the front end and the rear end of the inner wall are fixed to the front leg 52R and the rear leg 53R by welding, and the front end and the rear end of the outer wall 54bR are fixed to the front leg 52R and the rear leg 53R by welding. . The reinforcing portion 54L is similar to the reinforcing portion 54R.

  As shown in FIG. 2, the connecting portion 51 extends in the left-right direction, and both ends thereof are fixed to the left supporting portion 50L and the right supporting portion 50R. The connecting portion 51 is mainly composed of a pair of brackets 51R, 51L and a connecting member 51M. The connection portion 51 plays a role of enhancing the rigidity of the riser 50.

  Since the length in the vertical direction of the front leg 52R is longer than that of the rear leg 53R, the front leg 52R is more likely to fall than the rear leg 53R when a large load is applied to the vehicle seat 1 due to a collision or the like. Therefore, the connecting portion 51 is provided on the front end side of the left supporting portion 50L and the right supporting portion 50R.

  As shown in FIG. 9, the bracket 51L has a U-shape in cross section, and extends in the left-right direction with the opening side facing downward. The bracket 51L includes an upper surface 51aL, a front surface 51bL formed extending downward from the front end of the upper surface 51aL, and a rear surface 51cL formed extending downward from the rear end of the upper surface 51aL. And a side surface 51dL (see FIG. 7) extending downward from an outer end of the upper surface 51aL. The outer end portions of the front surface portion 51bL and the rear surface portion 51cL and the front and rear end portions of the side surface portion 51dL are continuous. Further, the upper surface 51aL, the front surface 51bL, the rear surface 51cL, and the side surface 51dL of the present embodiment are integrally formed.

  The upper surface portion 51aL has a rectangular shape in a plan view, and is formed with one bolt insertion hole (not shown) and a hole 51eL into which a cut and raised hole is inserted. The front surface portion 51bL and the rear surface portion 51cL have the same shape and size.

  The connection member 51M is a long member having a U-shape in cross section, and extends in the left-right direction with the opening side directed downward. The connecting member 51M includes an upper surface 51aM, a front surface 51bM formed extending downward from the front end of the upper surface 51aM, and a rear surface formed extending downward from the rear end of the upper surface 51aM. It is mainly composed of 51cM. Further, the upper surface 51aM, the front surface 51bM, the rear surface 51cM, and the side surface 51dM of the present embodiment are integrally formed.

  One bolt insertion hole (not shown) is formed (two in total) on the upper surfaces of both end sides of the connecting member 51M. Further, a nut 51N is fixed by welding on the back side of the bolt insertion holes of the brackets 51R, 51L. The outer ends of the front and rear portions are notched obliquely upward as going outward.

  The connecting member 51M is detachably attached to the brackets 51R and 51L. That is, both ends of the connecting member 51M are in close contact with the outer surfaces of the brackets 51R and 51L, and are fixed to the brackets 51R and 51L by the bolts 51B.

  The bracket 51L has an end on the side surface 51dL side inserted through the through hole of the inner wall 54aL into the support 50L, reaches the outer wall 54bL, and is fixed to the outer wall 54bL. The bracket 51L is fixed to the inner wall 54aL by welding. That is, the upper surface 51aL, the front surface 51bL, and the rear surface 51cL are fixed to the inner wall 54aL by welding. Note that both ends of the connecting member 51M are separated from the inner wall 54aL.

  After fixing the bracket 51L to the inner wall 54aL, the bolt insertion hole of the connection member 51M and the bolt insertion hole of the bracket 51L communicate with each other, and the cut and raised 51dM and the hole 51eL into which the cut and raised 51dM are inserted 51M is inserted from the upper side of the bracket 51L, and the connecting member 51M is fixed to the bracket 51L by a bolt 51B which is a fixing member. The bracket 51R is similar to the bracket 51L.

  As shown in FIGS. 8 and 9, the bolt 51B of the connecting member 51M is cut and raised near the insertion hole, and the bracket 51L has a hole 51eL into which the cut and raised 51dM is inserted. By changing the positions of the insertion holes of the bolt 51B, which are the fastening points of the connecting member 51M and the bracket 51L, and the cut and raised portion 51dM and the hole 51eL, erroneous setting at the time of assembly can be eliminated. The left of FIG. 9 is the case where the setting is correct, and the right is the case of the incorrect setting.

  Next, the effects of the present embodiment will be described using FIGS. 6, 7, 10, and 11 in comparison with the present embodiment and the comparative example. FIG. 7 is a schematic view of the configuration of FIG. FIG. 10 is a view showing an internal structure of a vehicle seat according to a comparative example, and is a front view of a riser, a seat slide adjusting device and a seat cushion frame. FIG. 11 is a schematic view of the configuration of FIG.

Fastening between the connecting member 51M and the brackets 51R and 51L in the embodiment is by means of a single bolt, respectively, from the bolt 51B which is the fastening point to the end of the bracket 51R and the bolt 51B which is the fastening point to the connecting member 51M. The contact surface CS between the connecting member 51M and the bracket 51R and the contact surface CS between the connecting member 51M and the bracket 51L are formed up to the end.
When load F is applied in the direction from the inside (INN) to the outside (OUT) of the vehicle, the fastening point RC between the support 50R and the floor becomes the rotation center at load, as shown in FIG. 7 around the fastening axis of bolt 51B. The moment can be generated, and the stress can be dispersed by the reaction force of the contact surface CS between the connection member 51M and the bracket 51R and the contact surface CS between the connection member 51M and the bracket 51L. Thereby, the deformation (generated stress) of the riser 50 can be reduced.

  Since the connecting member 51M and the brackets 51R and 51L of the comparative example are tightened with two bolts 51B and the rigidity is enhanced by the integrated structure of the connecting member 51M and the brackets 51R and 51L, the deformation (generated stress) of the riser 50 is growing.

  Therefore, when the vehicle is impacted and a large load is applied to the seat cushion 10, the riser 50 is less likely to fall, and thus the seat cushion 10 is less likely to fall.

  Further, since the connecting portion 51 is configured by the pair of brackets 51R, 51L and the connecting member 51M, and the connecting member 51M is detachably attached to the brackets 51R, 51L, the riser 50 does not have to be transported as it is. That is, only by removing the connecting member 51M from the brackets 51R, 51L, the pair of support portions 50R, 50L to which the brackets 51R, 51L are fixed can be separated, so the riser 50 does not have to be transported as it is. Therefore, it can be transported without bulk. Further, when assembling, only by fixing the connecting member 51M to the brackets 51R, 51L, the pair of support portions 50R, 50L are connected, and the riser 50 is completed, so the assembling operation becomes easy.

  Although the invention made by the inventor has been specifically described above based on the embodiments, it is needless to say that the present invention is not limited to the above embodiments and can be variously modified.

  For example, in the embodiment, in the connecting member 51M, the bolt 51B, the cut and raised 51dM, the bolt 51B, and the cut and raised 51dM are arranged in this order, but the bolt 51B, the cut and raised 51dM, the cut and raised 51dM, and the bolt 51B are cut in order 51dM, bolt 51B, cut and raised 51dM, and bolt 51B may be arranged in this order, cut and raised 51dM, bolt 51B, bolt 51B, and cut and formed 51dM.

  In the embodiment, the connecting member 51M is covered from above the brackets 51R and 51L, but the brackets 51R and 51L may be covered from above the connecting member 51M.

  Further, in the embodiment, the number of the connecting portions 51 is one, but it is not limited to this and it is sufficient if there is at least one or more. For example, the connecting portion 51 may be provided also on the rear end side, and two connecting portions 51 may be provided. As a result, the riser 50 is more unlikely to fall down.

  Moreover, although the connection part 51 is formed in cross-sectional view U-shape in the Example, it is not limited to this, For example, you may use the hollow member of cross-sectional view L-shape.

  In the embodiment, the connecting member and the bracket are vertically fastened with the bolt and the nut in a state where the connecting member and the bracket are vertically superimposed, but the present invention is not limited to this. A portion may be provided, and the vertical portions thereof may be fixed by bolts, nuts, rivets or the like.

1: Vehicle seat 10: Seat cushion 50: Riser 50L, 50R: Support portion 51: Connecting portion 51B: Bolt 51L, 51R: Bracket 51M: Connecting member 52R: Front leg 53R: Rear leg 54R: Reinforcement 60: Seat 60 Slide adjustment device

Claims (5)

Vehicle seat is
With a seat cushion,
A riser for supporting the seat cushion at a predetermined height;
Equipped with
The riser is
A pair of support portions extending in the front-rear direction of the vehicle and spaced apart in the vehicle width direction;
A connecting portion that extends in the vehicle width direction of the vehicle, connecting the pair of supporting lifting portions,
Equipped with
The connecting portion is
A connecting member,
A pair of brackets fixed respectively to the pair of support portions ;
Equipped with
The connecting member is fixed by one fixing member of each of the pair of brackets ,
When there is a contact surface between the connecting member and the bracket from the fixing member to the end of the bracket or from the fixing member to the end of the connecting member, when a load is applied from the inside to the outside of the vehicle The reaction force of the contact surface is configured to disperse stress . In the vehicle seat of claim 1,
The connecting member is a member having a U-shaped cross section, and extends in the vehicle width direction of the vehicle with the opening side directed downward,
Each of the pair of brackets is a member having a U-shaped cross section, and extends in the vehicle width direction of the vehicle with the opening side directed downward,
The lower surfaces of both ends of the connecting member are in close contact with the upper surfaces of the pair of brackets, and are fixed to the overlapping portions of the connecting member and the pair of brackets by the fixing members. In the vehicle seat of claim 2,
The connecting member has a pair of cut and raised portions,
Wherein each of the pair of brackets have a hole caused the cut is inserted,
The cut and raised portion and the hole are located at the contact surface . In the vehicle seat of claim 3,
Each of the pair of support portions is
With the inner wall,
An outer wall disposed outside the inner wall in the vehicle width direction,
An upper wall disposed between the inner wall and the outer wall;
The front leg,
The back leg,
Equipped with
Each of the pair of brackets is fixed to the inner wall and the outer wall. In the vehicle seat of claim 4, further,
A seat slide adjusting device for moving the seat cushion in the longitudinal direction of the vehicle between the seat cushion and the riser;
The riser is fixed to the seat slide adjusting device.

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