JP2019034653A - Rotary type footrest device for vehicle - Google Patents

Abstract

To provide a rotary type footrest device for a vehicle which can inhibit the movement of an occupant to a vehicle (seat) front side upon vehicle front collision without impairing comfort in a normal use state.SOLUTION: A footrest 28 is rotatably attached to a lower arm 18 with a seat width direction as an axial direction. The footrest 28 comprises a foot placement part 46 which is inclined toward a vehicle upper side from a crossing part 40 close to a floor 22 toward a vehicle (seat) front side in a normal use state. Further, there is provided a lifting mechanism part 32 which rotates the footrest 28 toward the vehicle upper side upon vehicle front collision. Accordingly, upon the vehicle front collision, feet F of an occupant P can be protected from the deformation of the floor 22, and the foot placement part 46 serves as, so to speak, a wall, thereby being able to inhibit the displacement of the occupant P to the vehicle front side. In addition, in the foot placement part 46, since the crossing part 40 is close to the floor 22, the feet F can be placed at positions close to the floor 22, so that comfort is not impaired.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a turning footrest device for a vehicle.

  The following Patent Document 1 discloses an invention related to a vehicle seat. The vehicle seat is provided with a support member extending forward from the seat cushion, and a footrest for placing a passenger's foot on the support member. The footrest is supported at a position away from the vehicle compartment front plate. Accordingly, it is possible to protect the occupant's feet placed on the footrest from deformation of the front plate of the vehicle compartment at the time of a vehicle front collision (hereinafter referred to as “vehicle collision”).

JP-A-10-323258

  However, in the configuration disclosed in Patent Document 1, the occupant's feet are always at a higher position than the floor, which may impair comfort. For this reason, as shown in other embodiments in Patent Document 1, a shin support is attached to the front end portion of the seat cushion so as to be pivotable along the vehicle vertical direction, and the shin support is attached to the upper part of the vehicle at the time of a vehicle front collision. It is also possible to adopt a configuration in which the occupant's feet on the floor are normally lifted from the front plate of the passenger compartment by rotating to the side. However, in the case of this configuration, there is no structure that suppresses the displacement of the occupant toward the front side of the vehicle at the time of the frontal collision of the vehicle, so that the seat belt may bite into the occupant and a submarine phenomenon may occur. The prior art has room for improvement in this regard.

  In consideration of the above fact, the present invention is a vehicle-use rotary footrest device that can suppress movement of the occupant to the front side of the seat at the time of a vehicle collision in which the occupant moves forward of the seat without impairing comfort in a normal use state. The purpose is to obtain.

  The vehicle body structure according to the first aspect of the present invention is attached to the seat front side of the lower arm constituting a part of the skeleton of the seat cushion so as to be rotatable about the seat width direction as an axial direction, and at the lower end in a normal use state. A footrest having a footrest portion that is in contact with or close to the floor and that is inclined toward the vehicle upper side from the lower end portion toward the front of the seat, and at the time of a vehicle collision in which the occupant moves to the front of the seat And a lifting mechanism for rotating the footrest to the vehicle upper side.

  According to the first aspect of the present invention, the footrest is attached to the seat front side of the lower arm constituting a part of the skeleton of the seat cushion so as to be rotatable about the seat width direction as an axial direction. This footrest has a footrest portion whose lower end portion is in contact with or close to the floor in a normal use state and is inclined toward the vehicle upper side from the lower end portion toward the seat front side. In addition, there is provided a lifting mechanism that rotates the footrest to the vehicle upper side at the time of a vehicle collision in which the occupant moves in front of the seat. Therefore, by placing the occupant's feet on the footrest portion, the occupant's feet can move to the upper side of the vehicle at the time of a vehicle collision in which the occupant moves forward of the seat, and the occupant's feet can be protected from deformation of the floor, As the footrest is tilted toward the upper side of the vehicle as it moves toward the front of the seat, the footrest is displaced at an angle closer to a right angle with respect to the floor. Displacement can be suppressed.

  In addition, since the footrest portion of the footrest in the normal use state is in contact with or close to the floor, the foot of the occupant can be placed at a position close to the floor, so that comfort is not impaired. .

  Here, examples of “when the vehicle collides with the occupant moving in front of the seat” include the front-facing state of the seat (a state of sitting forward on the forward-facing seat) and the rear-facing state of the seat (back-facing the rear seat). For example, a rear collision in a seated state).

  The rotating footrest device for a vehicle according to the first aspect of the present invention suppresses movement of the occupant to the front side of the seat at the time of a vehicle collision in which the occupant moves forward of the seat without impairing comfort in a normal use state. It has an excellent effect of being able to.

It is a schematic sectional drawing which shows the state which looked at the rotational footrest apparatus for vehicles which concerns on 1st Embodiment from the vehicle side. It is a schematic perspective view which shows the rotation type footrest apparatus for vehicles which concerns on 1st Embodiment. It is a schematic sectional drawing corresponding to Drawing 1 showing the operation state of the rotation type footrest device for vehicles concerning a 1st embodiment. It is a schematic sectional drawing which shows the state which looked at the rotary footrest apparatus for vehicles which concerns on 2nd Embodiment from the vehicle side. It is a schematic perspective view which shows the rotary footrest apparatus for vehicles which concerns on 2nd Embodiment. It is a schematic sectional drawing corresponding to Drawing 4 showing the operating state of the rotation type footrest device for vehicles concerning a 2nd embodiment. It is a schematic sectional drawing which shows the state which looked at the rotary footrest apparatus for vehicles which concerns on 3rd Embodiment from the vehicle side. It is a schematic perspective view which shows the rotating footrest apparatus for vehicles which concerns on 3rd Embodiment. It is a schematic sectional drawing corresponding to Drawing 7 which shows the operation state of the rotation type footrest device for vehicles concerning a 3rd embodiment. It is a schematic sectional drawing which shows the state which looked at the rotational footrest apparatus for vehicles which concerns on 4th Embodiment from the vehicle side. It is a schematic perspective view which shows the rotary footrest apparatus for vehicles which concerns on 4th Embodiment. It is a schematic sectional drawing corresponding to Drawing 10 which shows the operation state of the rotation type footrest device for vehicles concerning a 4th embodiment.

  1 to 12, the arrow FR indicates the front side in the vehicle longitudinal direction, the arrow OUT indicates the vehicle width direction outside, and the arrow UP indicates the vehicle vertical direction upper side. Hereinafter, the present invention will be described by taking the case of a front collision of a vehicle in a seat forward state as an example.

(First embodiment)
Hereinafter, a first embodiment of a turning footrest device 10 for a vehicle according to the present invention will be described with reference to FIGS.

  FIG. 1 shows a vehicle seat 12 provided with a vehicle rotary footrest device 10 provided in a vehicle compartment of the vehicle. The vehicle seat 12 includes a seat cushion 14 that is a seat surface and a seat back 16 that is a backrest. Inside the seat cushion 14, a lower arm 18 that constitutes a vehicle front side portion of a seat cushion frame that constitutes a part of the seat cushion 14 is provided. The lower arm 18 is disposed on the vehicle front side and the vehicle lower side of the seat cushion 14 and is formed in a cylindrical shape whose longitudinal direction is the seat width direction. In the drawing, the illustration of the seat cushion frame other than the lower arm 18 is omitted for easy understanding.

  A seat slide rail 20 is provided on the vehicle lower side of the seat cushion 14. A pair of the seat slide rails 20 are provided apart from each other in the seat width direction, and are attached to the floor 22 via an attachment seat surface 24 and a bracket member 26 formed on the floor 22. The seat cushion 14 and the vehicle seat 12 can be moved along the vehicle front-rear direction by the seat slide rail 20.

  A footrest 28 is attached to the lower arm 18 of the seat cushion 14. As shown in FIG. 2, the footrest 28 includes a frame 30, a lifting mechanism 32, and a base member 34. The frame 30 includes a pair of left and right side frames 30A formed by a first extending portion 27 and a second extending portion 29 in a substantially L shape in a side view of the vehicle, and a pair of left and right side frames 30A. A front end frame 30B that integrally connects the front end portions, a connecting frame 30C that connects the intersecting portions 40 of the first extending portion 27 and the second extending portion 29 in the pair of left and right side frames 30A, and the side The frame 30 </ b> A includes a pair of left and right leg frames 30 </ b> D that are provided at a substantially central portion in the longitudinal direction of the first extending portion 27 and extend to the vehicle lower side.

  The first extending portion 27 of the side frame 30 </ b> A has a base end portion 42 rotatably attached to the lower arm 18 shown in FIG. 1 via a rotation support portion 44. The first extending portion 27 is disposed so as to be inclined downward from the base end portion 42 toward the vehicle front side in the normal use state.

  A footrest 46 is formed on the vehicle front side of the frame 30. The footrest portion 46 includes a second extending portion 29, a tip frame 30 </ b> B, a connecting frame 30 </ b> C, and a plate member 48. Specifically, the second extending portion 29 of the side frame 30A is disposed so as to be inclined toward the vehicle upper side from the intersecting portion 40 toward the vehicle front side in the normal use state. And the plate member 48 is attached to the site | part enclosed by the left-right paired 2nd extension part 29, the front-end | tip frame 30B, and the connection frame 30C from the vehicle upper side. Note that the intersection 40 is disposed at a position close to the floor 22 in a normal use state. In other words, the intersection 40, which is the lower end of the footrest 46, is close to the floor 22, and the footrest 46 moves upward from the intersection 40 toward the front of the vehicle (front of the seat). And tilted.

  As shown in FIG. 1, the lifting mechanism 32 is provided inside the leg frame 30D. The ascending mechanism 32 includes a spring member 50 having a substantially vehicle vertical direction as an urging direction, a rod member 52 provided on the outer side in the circumferential direction of the spring member 50, and a locking pin 54 inserted through the rod member 52. It is comprised including. The rod member 52 is configured to be able to expand and contract substantially in the vertical direction of the vehicle, and is biased so as to extend in the vertical direction of the vehicle by the spring member 50, but contracted so as not to extend by the locking pin 54. Held in a state. The locking pin 54 is connected to an actuator (not shown), and when the actuator is operated, the locking pin 54 is removed from the rod member 52 so that the rod member 52 is extended. The actuator is configured to operate by a predetermined current from a controller connected to the collision detection sensor (both not shown).

  A base member 34 is attached to the vehicle lower side end portion of the rod member 52 so as to be rotatable about the seat width direction as an axial direction. Specifically, a vehicle lower side end portion of the rod member 52 is rotatably attached to a substantially central portion of the base member 34 in the vehicle front-rear direction. The base member 34 is placed on the floor 22.

  As shown in FIG. 2, a cover member 56 is attached to the frame 30 of the footrest 28. The cover member 56 is attached to the first extending portion 27 of the side frame 30A and the lower arm 18 shown in FIG. 1, and extends from the first extending portion 27 and the lower arm 18 to the vicinity of the floor 22. It is a substantially plate material made of resin. Accordingly, the leg frame 30D and the base member 34 are configured to be difficult to visually recognize from the outside. In the drawing, the illustration of the cover member 56 attached to the first extending portion 27 on the front side of the drawing is omitted for easy understanding of the internal structure of the footrest 28.

(Operation and effect of the first embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 1, the occupant P seated on the vehicle seat 12 can place the foot F on the footrest 46 in the footrest 28. When a collision in front of the vehicle is detected by the collision detection sensor and a collision signal is output to the controller, the controller determines the collision state based on the input collision signal. At this time, when the controller determines that “the occupant P is displaced toward the front of the vehicle (front of the seat)” (that is, at the time of a vehicle front collision), the controller supplies a predetermined current to the actuator. As a result, the actuator is operated and the locking pin 54 is removed from the rod member 52. As a result, as shown in FIG. 3, the rod member 52 extends due to the urging force of the spring member 50, so that the footrest 28 moves to the vehicle upper side centering on the lower arm 18 (from the position of the two-dot chain line in the figure along the arrow). To be rotated.

  In the present embodiment, a footrest 28 is attached to the vehicle front side of the lower arm 18 constituting a part of the skeleton of the seat cushion 14 so as to be rotatable about the seat width direction as an axial direction. The footrest 28 has a footrest portion 46 that is inclined toward the vehicle upper side as the intersection portion 40 comes close to the floor 22 and moves toward the vehicle front side from the intersection portion 40 in a normal use state ( (See FIG. 1). Moreover, the raising mechanism part 32 which rotates the footrest 28 to the vehicle upper side at the time of a vehicle front collision is provided. Therefore, by placing the foot F of the occupant P on the footrest portion 46, the occupant P's foot F can be protected from the deformation of the floor 22 by moving the occupant P's foot F upward in the vehicle front collision. At the same time, the footrest portion 46 inclined toward the vehicle upper side as it moves toward the front side of the vehicle is displaced at an angle closer to the right angle with respect to the floor 22, so that the footrest portion 46 becomes a so-called wall and becomes the occupant P. Displacement to the vehicle front side can be suppressed.

  Further, as shown in FIG. 1, the footrest portion 46 of the footrest 28 in the normal use state places the foot F of the occupant P close to the floor 22 because the intersection portion 40 is close to the floor 22. Because it can do things, comfort is not impaired. Thereby, the movement of the passenger | crew P to the vehicle (seat) front side can be suppressed at the time of a vehicle front collision, without impairing the comfort in a normal use state.

(Second Embodiment)
Next, a rotating footrest device 60 for a vehicle according to a second embodiment of the present invention will be described with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 4, the vehicular rotating footrest device 60 according to the second embodiment has the same basic configuration as that of the first embodiment, and is provided with a vehicular rotation provided on a vehicular seat 62. The raising mechanism 64 of the movable footrest device 60 is characterized in that it is rotatably attached to the intersection 40 of the side frame 30A.

  That is, the ascending mechanism 64 has a spring member 66 having a substantially vertical direction of the vehicle as a biasing direction and a longitudinal end portion 68 attached to the intersection 40 so as to be rotatable about the seat width direction as an axial direction. The end member 70 includes a rod member 76 that is rotatably attached to the seat rear side of the base member 74, and a locking pin 78 that locks the rod member 76 to the first extending portion 27 of the side frame 30A. (See also FIG. 5). The locking pin 78 is connected to an actuator (not shown), and when the actuator is operated, the locking pin 78 is removed from at least one of the rod member 76 and the first extending portion 27, thereby causing the rod member 76 and the first pin to move. The two extending portions 29 are expanded so that the angle formed by the extending portions 29 is substantially a right angle (see FIG. 6).

(Operation and effect of the second embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 4, the occupant P seated on the vehicle seat 62 can place the foot F on the footrest 46 in the footrest 28. When a collision in front of the vehicle is detected by the collision detection sensor and a collision signal is output to the controller, the controller determines the collision state based on the input collision signal. At this time, when the controller determines that “the occupant P is displaced to the front side of the vehicle (seat)” (that is, at the time of a vehicle front collision), the controller supplies a predetermined current to the actuator. As a result, the actuator is operated and the locking pin 78 is removed from at least one of the rod member 76 and the first extending portion 27. As a result, as shown in FIG. 6, the base member 74 on the other end 70 side in the longitudinal direction of the rod member 76 is moved forward by the urging force of the spring member 66 and the footrest 46 and the floor are moved. It develops so that the angle formed with 22 becomes a substantially right angle. As a result, the footrest 28 is rotated about the lower arm 18 toward the upper side of the vehicle (from the position of the two-dot chain line in the figure along the arrow).

  In the present embodiment, the rotating footrest device for a vehicle according to the first embodiment, except that a lifting mechanism 64 provided on the vehicle seat 62 is rotatably attached to the intersection 40 of the side frame 30A. Since the configuration is the same as that of the first embodiment, the same effect as that of the first embodiment can be obtained. Moreover, since the raising mechanism part 64 is rotatably attached to the crossing part 40 of the side frame 30A, a load applied to the front side of the vehicle (seat) applied from the occupant P to the footrest part 46 at the time of the vehicle frontal collision. It can be efficiently transmitted to the floor 22 through the rod member 76 and the base member 74 of the ascending mechanism 64.

(Third embodiment)
Next, a rotating footrest device for a vehicle 80 according to a third embodiment of the present invention will be described with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 7, the vehicular rotating footrest device 80 according to the third embodiment has the same basic configuration as that of the first embodiment, and the vehicular rotation provided on the vehicular seat 82. It is characterized in that the raising mechanism portion 84 of the movable footrest device 80 includes an airbag 86.

  That is, the ascending mechanism portion 84 includes an airbag 86 and an inflator 88. The airbag 86 is provided on the vehicle lower side and the connection frame 30C (see FIG. 8) side in the first extending portion 27 of the side frame 30A in a folded state. As shown in FIG. 8, the inflator 88 connected to the airbag 86 is attached to the vehicle lower side of the first extending portion 27 of the side frame 30 </ b> A via the plate member 90. The inflator 88 is connected to a controller (not shown). When a predetermined current is supplied from the controller, the inflator 88 jets gas to the airbag 86 (see FIG. 7). Thereby, the airbag 86 is inflated and deployed toward the vehicle upper side by taking a reaction force from the floor 22 (see FIG. 9).

  A cover member 92 is attached to the frame 30 of the footrest 28. The cover member 92 is attached to the first extending portion 27 of the side frame 30A and the lower arm 18 shown in FIG. 7, and extends from the first extending portion 27 and the lower arm 18 to the vicinity of the floor 22. It is a substantially plate material made of resin. Accordingly, the inflator 88 and the airbag 86 (see FIG. 7) are difficult to visually recognize from the outside. Further, the cover member 94 is attached to the lower end portion of the cover member 92 and the connection frame 30C so as to close the opening formed by the lower end portions of the plurality of cover members 92 and the connection frame 30C. The cover member 94 is formed with a cutout portion 96 that is a cut formed in a substantially C shape in a vehicle plan view along the lower end portion of the cover member 92.

(Operations and effects of the third embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 7, the occupant P seated on the vehicle seat 82 can place the foot F on the footrest 46 in the footrest 28. When a collision in front of the vehicle is detected by the collision detection sensor and a collision signal is output to the controller, the controller determines the collision state based on the input collision signal. At this time, when the controller determines that “the occupant P is displaced toward the front side of the vehicle” (that is, at the time of a vehicle front collision), the controller supplies a predetermined current to the inflator 88. As a result, the inflator 88 is activated and gas is ejected to the airbag 86. As a result, as shown in FIG. 9, the airbag 86 inflates and deploys toward the vehicle lower side while tearing the cover member 94 from the notch 96 (see FIG. 8) of the cover member 94, and generates a reaction force from the floor 22. In order to inflate and deploy the vehicle upward, the footrest 28 is pushed up by the airbag 86 and rotated about the lower arm 18 toward the vehicle upper side (from the position of the two-dot chain line in the figure along the arrow).

  The present embodiment is configured in the same manner as the vehicular rotating footrest device 10 of the first embodiment, except that the ascending mechanism portion 84 of the vehicular rotating footrest device 80 includes an airbag 86. Therefore, the same effect as the first embodiment can be obtained. Further, since the footrest 28 is pushed upward by the inflating and deploying force of the airbag 86, the footrest 28 can be pushed upward by the airbag 86 following the floor even in a vehicle having a non-flat floor.

(Fourth embodiment)
Next, a rotating footrest device 100 for a vehicle according to a fourth embodiment of the present invention will be described with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 10, the rotating footrest device 100 for a vehicle according to the fourth embodiment has the same basic configuration as that of the third embodiment, and is a lifting mechanism provided on the vehicle seat 102. A feature is that an inflator 104 is provided on the vehicle seat 102 side.

  That is, the ascending mechanism unit 104 includes the airbag 86 and the inflator 106. The airbag 86 is provided on the vehicle lower side and the seat cushion 14 side in the first extending portion 27 of the side frame 30A in a folded state. The inflator 106 connected to the airbag 86 is attached to the vehicle (seat) rear side of the lower arm 18 in the seat cushion 14. The inflator 106 is connected to a controller (not shown). When a predetermined current is supplied from the controller, the inflator 106 ejects gas to the airbag 86. As a result, the airbag 86 is inflated and deployed toward the vehicle upper side by taking a reaction force from the floor 22 (see FIG. 12).

  As shown in FIG. 11, a cover member 108 is attached to the frame 30 of the footrest 28. The cover member 108 is attached to the first extending portion 27 of the side frame 30A and the lower arm 18 shown in FIG. 10, and extends from the first extending portion 27 and the lower arm 18 to the vicinity of the floor 22. It is a substantially plate material made of resin. Thus, the airbag 86 (see FIG. 10) is difficult to visually recognize from the outside. Further, the cover member 110 is attached to the lower end portion of the cover member 108 and the connection frame 30C so as to close the opening formed by the lower end portions of the plurality of cover members 108 and the connection frame 30C. Further, the cover member 108 and the cover member 110 attached to the lower arm 18 include a lower end portion of the cover member 108 attached to the first extension portion 27 and a vehicle of the cover member 108 attached to the first extension portion 27. A notch 112 that is a pair of left and right cuts is formed continuously along the rear end.

(Operations and effects of the fourth embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 10, the occupant P sitting on the vehicle seat 102 can place the foot F on the footrest 46 in the footrest 28. When a collision in front of the vehicle is detected by the collision detection sensor and a collision signal is output to the controller, the controller determines the collision state based on the input collision signal. At this time, when the controller determines that “the occupant P is displaced to the front side of the vehicle (seat)” (that is, at the time of a vehicle front collision), the controller supplies a predetermined current to the actuator. As a result, the inflator 106 is actuated to inject gas into the airbag 86. As a result, as shown in FIG. 12, the airbag 86 is inflated and deployed to the vehicle lower side while tearing the cover member 110 from the cutout portion 112 (see FIG. 11) of the cover member 108 and the cover member 110, and the floor 22. Therefore, the footrest 28 is pushed up by the airbag 86 and is rotated around the lower arm 18 toward the upper side of the vehicle (along the two-dot chain line in the figure along the arrow). Moved.

  The present embodiment is the same as that of the first embodiment except that the inflator 106 of the ascending mechanism 104 of the vehicle rotary footrest device 100 is provided on the vehicle seat 102 side. Since the configuration is the same as that of the device 10, the same effect as the first embodiment can be obtained. In addition, since the inflator 106 is provided on the vehicle seat 102 side, the footrest 28 itself becomes light, so that the footrest 28 can be quickly rotated upward in the vehicle.

  As described above, the present invention has been described by taking as an example the case of a frontal collision of a vehicle in a seat forward state, but the present invention is also effective in the case of a rearward collision in a rearward state of a seat.

  In the first to fourth embodiments described above, the ascending mechanism portions 32, 64, 84, and 104 have a configuration that uses the biasing force of the spring member 50 and a configuration that uses the inflating and deploying force of the airbag 86. However, the present invention is not limited to this, and other configurations such as a configuration using a gas cylinder may be used.

  Moreover, although the intersection part 40 which is the lower end part of the footrest part 46 is set as the structure adjoined to the floor 22, it is good also as a structure contact | abutted to the floor 22 not only this.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above, and various modifications other than those described above can be implemented without departing from the spirit of the present invention. Of course.

DESCRIPTION OF SYMBOLS 10 Rotating footrest apparatus 14 for vehicles 14 Seat cushion 18 Lower arm 22 Floor 28 Footrest 32 Lifting mechanism part 40 Crossing part (lower end part)
46 Footrest 60 Vehicle turning footrest device 64 Lifting mechanism 80 Vehicle turning footrest device 84 Lifting mechanism 100 Vehicle turning footrest device 104 Lifting mechanism P Crew

Claims (1)

A lower arm that forms part of the skeleton of the seat cushion is pivotally attached to the front side of the seat with the seat width direction as the axial direction, and the lower end portion is in contact with or close to the floor in the normal use state and from the lower end portion. A footrest having a footrest portion inclined toward the vehicle upper side as it goes toward the front of the seat;
An ascending mechanism for rotating the footrest to the vehicle upper side at the time of a vehicle collision in which an occupant moves forward of the seat;
Rotating footrest device for vehicles having