JP2009096423A - Vehicular seat with thigh support - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat with a thigh support capable of adjusting a turning position of the thigh support at a distal end of a sitting part of the vehicular seat so as to easily respond to various physics of occupants. <P>SOLUTION: The vehicular seat 11 with the thigh support 15 of a cushion body provided on a front side distal end part of the sitting part 12 is provided with a support plate 17 provided at the inside of the thigh support for supporting the thigh support 15; a turning device 18 applied to the support plate 17 and turning the thigh support 15 in a vertical direction; a drive device 20 for generating turning by pressing the turning device 18; a pressure sensor for measuring pressing force generated between the drive device 20 and the turning device 18; and a control device (ECU) 52 for controlling pressing to the turning device 18 by the drive device 20 so as to adjust the pressing force measured by the pressure sensor to preset predetermined pressing force. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicular seat with a roll support, and more particularly to a vehicular seat with a roll support that can automatically adjust the rotation position of the roll support.

  The vehicle seat is required to be adapted to the occupant's physique in order to contribute to improvement in comfort and maneuverability. In particular, sports seats used for sports-type automobiles are designed so that the performance of supporting passengers during driving is sufficiently exhibited. For example, in order to ensure supportability in a sports seat, the front end portion of a seating portion with which the thigh abuts is raised so that an occupant sits deeply on the seat. The raised tip portion of the seating portion is called a rhino support, and the shape and cushioning of this portion have a great influence on driver fatigue and are regarded as important in design.

  However, the fact that it is designed to fit the body firmly is an uncomfortable seat for a passenger whose physique is different from the passenger model. In the vehicle seat 100 with a cy-support, for a person who is smaller than the occupant model, the occupant 102 would sit too deep with the cy-support 101 as shown in FIG. 7A, and the accelerator or brake pedal was depressed. Sometimes the thigh 103 is too high and feels pain and fatigue. On the other hand, the occupant 105 having a large physique cannot sufficiently support the body due to insufficient contact with the thigh 106 as shown in FIG. 7B. In the rhino support fixed in this way, the support performance becomes superior or inferior due to the difference in the occupant's physique.

  In order to solve the above-described problem, a sheet-type power type sysupport device capable of rotationally adjusting the thy support has been proposed (see, for example, Patent Document 1).

The power type cysupport device for a seat described in the above-mentioned Patent Document 1 is a cysupport that uses a drive mechanism to move a lead screw (rotary drive body) connected to a geared motor equipped with a rotary drive body and a nut engaged with the lead screw. It can be adjusted in place of the rotation of.
JP 2001-239860 A

  However, the rotation means of the rhino support described in Patent Document 1 has a complicated configuration, and the rotation adjustment becomes complicated, and the operation is troublesome. Especially when starting a vehicle such as an automobile, there are many essential operations such as checking the door lock, attaching the seat belt, checking the angle of each mirror, checking and checking various meters such as the fuel gauge, etc. In addition, adjusting the angle of the rhino support is a significant burden on the passengers, especially the driver.

  An object of the present invention is to provide a vehicular seat with a roll support that can adjust the rotation position of the roll support at the tip of a seating portion of the vehicle seat so that it can easily correspond to various physiques of passengers. is there.

  The present invention solves the above-mentioned problem by controlling the rotation in order to adjust the rotation position of the roll support based on the measured value of the pressing force applied to the roll support provided at the tip of the seating portion. Is intended.

  That is, in order to achieve the above object, the present invention proposes a vehicle seat with a roll support of a cushion body provided at a front end portion of a seating portion, and the roll support for supporting the roll support Cysupport support means provided inside, rotation means for acting on the cysupport support means to rotate the cysupport in the vertical direction, and drive means for causing the rotation by pressing the rotation means And pressure measuring means for measuring the pressing force generated between the driving means and the rotating means, and the driving for adjusting the pressing force measured by the pressure measuring means to a predetermined pressing force set in advance. And a control means for controlling a pressing force applied to the turning means by the means.

  The rotating means rotates the rhino support vertically through the rhino support supporting means, and the rotation of the rotating means is due to the pressing of the driving device, but when the occupant is seated on the seat, It will be pressed against the pressing force from a part of the body. Therefore, when the pressing force acting on the thigh of the occupant is excessive, the occupant feels pain and discomfort, and when the pressing force is excessive, the support by the cy-support is not sufficiently exhibited.

  In order to ensure the support by the roll support, the appropriate rotation position of the roll support is determined by the pressing force generated between the drive means and the rotation means, and the control means is used to obtain an appropriate predetermined pressing force. The pressure by the driving means is controlled.

  The rotating means has a rotating shaft having a horizontal axis of the seating portion as a rotating shaft, and one end side is in contact with the support member with the rotating shaft in between, and the other end side is the drive The cylinder support is connected to the cylinder member, and the roll support rotates about the rotation axis by the axial movement of the cylinder member back and forth so that the rhino support rotates through the support member. it can.

  The driving means rotates the rotating means whose other end is connected to the cylinder member when the cylinder member moves back and forth in the axial direction, so that the rotation position can be easily controlled.

  Further, it is preferable that the control means controls the driving means based on a measured value of the pressing force by the pressure measuring means, either by connecting an ignition switch, wearing a seat belt, or sensing a passenger seating by a seating sensor. .

  If control by the control means is performed by connecting the ignition switch, wearing the seat belt, or sensing the occupant's seating by the seating sensor, the inconvenience of the occupant is eliminated.

  The predetermined pressing force set in advance is the optimum pressing force of the occupant, that is, the optimal pressing force if the control unit controls the driving unit based on a numerical value previously set in the control unit. It is possible to always obtain the rotation position (rotation angle) of the correct rhino support.

  ADVANTAGE OF THE INVENTION According to this invention, the rotational position of the rhino support in the front-end | tip of the seating part of a vehicle seat can be adjusted so that it can respond | correspond easily to a passenger | crew's various physiques.

  FIG. 1 (a) is a perspective view of a vehicle seat with a die support according to the present invention, FIG. 1 (b) is a schematic sectional view of the internal structure of the die support in the vehicle seat with a die support, and FIG. FIG. 2A is an exploded perspective view of the internal structure of the rhino support according to the present invention, and FIG. 2B is a perspective view of the internal structure of the rhino support. 3 is a perspective view in which the internal structure of the rhino support according to the present invention is attached to the seat frame of the seating portion, FIG. 4 is a block diagram of the apparatus configuration of the rhino support of the vehicle seat with the rhino support according to the present invention, FIG. FIG. 6 is a flow chart of the use of the vehicle seat with a die support according to the present invention, FIG. 6 is a flow diagram of another use of the vehicle seat with a die support according to the present invention, and FIGS. It is a cross-sectional schematic view of a rhinoceros support.

  As shown to Fig.1 (a), the vehicle seat 11 with a rhino support which concerns on this invention is provided with the seating part 12 on which a passenger | crew mainly sits, and the backrest 13 which can be reclined. A cushion body on the front end side of the seating portion 12 is a roll support 15 that can be vertically adjusted and rotated. The rhino support 15 rotates in the vertical direction with the inside of the rear side as a rotation axis (the axis is the width direction of the seat).

  As shown in FIG. 1 (b), the outline of the inside of the rhino support 15 is in contact with the support plate 17, which is a rhino support support means attached to the seat frame 16 of the seating portion 12, and the support plate 17. A rotation device 18 that is a rotation means for rotation, and a drive device 20 that is a drive means that adjusts the rotation position by adjusting the pressing force connected to the rotation device 18 to be applied. is there.

  As shown in FIG. 1B, when the rotational position of the cysupport 15 is downward, the thigh portion 23 of the occupant and the upper surface portion of the cysupport 15 have a small contact area, which is sufficient by the cysupport 15. Support is not provided.

  In FIG. 1C, the rotating device 18 that receives the pressing force by the driving device 20 rotates the support plate 17 upward, and increases the area where the upper surface portion of the rhino support 15 contacts the thigh portion 23 of the occupant. And support it enough.

  The pressure applied by the drive device 20 is adjusted by a measurement value obtained by a pressure sensor, which is a pressure measurement means described later, and a control device (ECU), which is a control means, controls the drive device 20 based on the measurement value. Yes.

  FIG. 2A is an exploded perspective view of the internal structure of the rhino support.

  The support plate 17, which is a rectangular plate member, is located inside the rhino support 15, and the longitudinal direction of the support plate 17 is arranged in the width direction of the rhino support. Of the long sides of the support plate 17, on the back side of the rhino support 15, rod members 31a and 31b, which are respectively attached to both end portions thereof and bent in an L shape, are hollow cylindrical pieces 32a having both ends open, 32b is inserted. The rod members 31a and 31b are rotatable with respect to the cylinder pieces 32a and 32b. As will be described later, the cylinder pieces 32a and 32b are attached to the seat frame 16 of the seating portion 12, whereby the support plate 17 is attached to the rod member 31a. , 31b and the cylinder pieces 32a, 32b are rotated about the same straight line formed by the rotation axis.

  The rotation device 18 mainly includes a rod-shaped rotation shaft body 41 having a rotation axis in the width direction of the rhino support (the width direction of the seating portion 12) and a pair of brackets 42a on which the rotation shaft body 41 is placed and fixed. 42b, a rod member 43 extending in the width direction of the rhino support, which is rotated in contact with the support plate 17, and the rod member 43 is rotatable by the rotation shaft 41 and the rotation shaft 41 A pair of plate brackets 45a and 45b to be coupled to each other and a stopper 47 made of a pipe member having both ends connected to the brackets 42a and 42b by a substantially L-shaped connector member are provided.

  The stopper 47 stops the downward rotation of the bar member 43 at a predetermined position, and supports the lower limit of rotation of the rhino support 15. Each of the pair of plate brackets 45 a and 45 b and the brackets 42 a and 42 b are positioned in the vicinity of both ends of the rotating shaft body 41 so as to maintain a predetermined angle. The brackets 42a and 42b are fixed so as to place the rotating shaft body 41, and the plate brackets 45a and 45b are fixed to the rotating shaft body 41 so that the rotating shaft body 41 rotates about its axis. Accordingly, the brackets 42a and 42b are rotated.

  The drive device 20 has a cylindrical shape with a substantially rectangular cross section, and a cylinder 21 having a circular cross section is attached from the tip thereof so as to be movable in the axial direction. The tip of the cylinder 21 is inserted into one bracket 42b and fixed with a nut.

  FIG. 2B is a perspective view of the internal structure of the rhino support, and the components shown in the exploded perspective view of FIG. The support plate 17 that rotates while supporting the rhino support 15 shown in FIG. 1A is in contact with a stopper 47 made of a pipe member, and is located at the lower limit of the rotation. The tip of the cylinder 21 of the drive device 20 is inserted into the bracket 42b of the rotation device 18. Although not appearing in the drawing, the tip of the cylinder 21 is fixed with a nut inside the bracket 42b.

  The rotating shaft body 41 mounted and fixed at both ends by brackets 42a (not shown in the figure) and 42b is moved via the bracket 42b when the cylinder 21 performs piston movement (back and forth movement) in its axial direction. It is designed to rotate forward and reverse. Then, this rotation is the rotation of the bar member 43 via the plate brackets 45a and 45b, the rotation of the support plate 17 placed on and in contact with the bar member 43, and the rotation of the rhino support 15. It is configured.

  FIG. 3 shows the internal structure of the rhino support attached to the seat frame 16 of the seating portion 12. As shown in the figure, cylinder pieces 32 a and 32 b that constitute a part of the rotation shaft of the support plate 17 are fixed to the upper end of the front portion of the seat frame 16. Further, both end portions of the rotation shaft body 41 are rotatably inserted and placed in holes provided at the left and right ends of the front portion of the seat frame 16. Although not shown in the figure, the upper end side of the driving device 20 is fixed to the inner lower end of the seat frame. The piston motion of the cylinder 21 (not shown) of the drive device 20 (not shown) is changed to a turning motion by the rotating device 18 to rotate the support frame 17 and the cushion body containing the support frame 17 is built. A rhino support 15 (not shown) is rotated.

  Next, the control of the vertical rotation of the rhino support 15 will be described with reference to the block diagram of the apparatus configuration of FIG. In the figure, the description will be made by the vertical rotation of the support plate instead of the vertical rotation of the rhino support 15.

  The device configuration includes a support plate 17 on the rhino support 15, a rotation device 18 that rotates the support plate 17, a drive device 20 that rotates the rotation device 18 by pressing the piston 18 by the piston movement of the cylinder, and rotation The pressure sensor 51 for measuring the pressing force between the device 18 and the driving device 20 and the driving device 20 so that the measured value of the pressing force measured by the pressure sensor 51 becomes a predetermined pressing force value set in advance. A control device (ECU: electronic control device unit) that controls pressing is provided.

  Next, a usage mode when the vehicle seat with rhino support according to the present invention is applied to a vehicle will be described with reference to FIG. Note that this is one form of use, and the use is not limited to this.

  As shown in FIG. 5, when an occupant gets into the vehicle and an ignition switch (abbreviated as “IG SW” in the figure) is turned on (S11), the pressure sensor 51 is connected to the thigh support 15 by the occupant's thigh. Measurement of the pressing force acting between the rotation device 18 and the driving device 20 by the pressing is started (S12).

  Instead of the ignition switch, the measurement of the pressing force by the pressure sensor 51 may be started by the seat belt being mounted or the occupant's seating being detected by the seating sensor.

  The measurement information of the measured pressing force is sent to the control unit (ECU) 52, and it is determined whether the pressing force is a predetermined set value (the pressing force F is a leveling value) (S13).

  When the predetermined pressing force is not reached, the control device (ECU) 52 rotates the support device 17 by rotating the rotation device 18 by the cylinder portion 21 of the drive device (motor) 20 (S14). .

  Although the rotation is in the “UP direction” in the figure, the reason is that the rhino support 15 is set to the lowest limit at the start of operation (when getting off) in order to improve boarding / exiting performance. When the lower limit is not set at the start of operation (when getting off), rotation in the “DOWN direction” is possible as necessary.

  When the predetermined pressing force (the pressing force F is a leveling value), the control device (ECU) 52 stops the driving device (motor) 20 (S15).

  Thereafter, when the ignition switch is not in the ON state, that is, in the OFF state (S16), the control device (ECU) 52 operates the drive device (motor) 20 to rotate the support plate 17 in the “DOWN direction”. (S17). For the convenience of getting on and off, the support plate 17 is rotated downward, that is, to the lowest limit.

  When the support plate 17 rotated in the “DOWN direction” reaches the initial state, that is, the lowest limit (S18), the control device (ECU) 52 stops the drive device (motor) 20 (S19).

  Thus, since the pressing force acting between the rotation device 18 and the drive device 20 is measured and the rotation position of the rhino support 15 can be automatically controlled to be a predetermined value, a complicated operation is not required. Support by Rhino support can be provided according to the physique of the passenger.

  Next, another use mode when the vehicle seat with a die support according to the present invention is applied to a vehicle will be described with reference to FIG. Differences from the usage mode described in FIG. 5 will be mainly described.

  As shown in FIG. 6, it is determined whether or not the ignition switch is in an ON state (S31). When the ignition switch is in an OFF state, the driving device (motor) 20 is stopped even if various switches are in an ON state (S32). (S33).

  Further, even if the ignition switch is in the ON state, it is further determined whether or not the auto switch is in the ON state (S34).

  The pressure sensor 51 measures (detects) the pressing force acting between the rotation device 18 and the driving device 20 when the auto switch is in the ON state (S35). Then, the control device (ECU) 52 determines whether or not the pressing force is a predetermined set value (the pressing force F is a leveling value) (S36). When the pressing force is not the leveling value, the driving device (motor) 20 is activated. The support plate 17 rotates in the “UP direction” (S37). This is because, as described above, the initial state of the lowest limit position is restored at the start of operation (when getting off).

  On the other hand, when the leveling value is reached, the drive device (motor) 20 is stopped, and the current rotation position of the support plate 17 is maintained (S38).

  After that, when the reset switch is turned on (S39), or when the ignition switch is turned off (S40), the buzzer sounds to return to the initial state, and then returns to the initial state (S41). The operation for this is started (S42).

  Thereafter, a return to the initial state is determined by the control unit (ECU) 52 (S43), and the drive unit (motor) stops when the control unit (ECU) 52 is rotated to the initial position.

  Thus, the convenience of the vehicular seat with a roll support according to the present invention is improved by leaving the use of the auto switch to the judgment of the occupant and further providing the reset switch.

  As still another usage mode, a function for manually adjusting the rotation of the rhino support can be provided. For example, the manual adjustment can be performed while the manual switch is kept pressed, and the operation is stopped when the movable range is exceeded or an obstacle is hit. Even during manual adjustment, when the ignition switch is turned OFF, the initial state can be restored.

  Furthermore, when the usage or operation is abnormal, it is possible to ensure safety by generating a warning sound and automatically stopping. The same applies when manual operation and auto operation are performed simultaneously.

  As described above, the vehicular seat with rhino support according to the present invention can easily provide support for the occupant and can also provide convenience for improving the convenience.

(A) is a perspective view of a vehicular seat with a roll support according to the present invention, (b) is a schematic sectional view of the internal structure of the roll support in the vehicular seat with the roll support, and (c) is also with a roll support. The schematic sectional drawing of the internal structure of the rhino support in a vehicle seat. (A) is a disassembled perspective view of the internal structure of the cysupport according to the present invention, and (b) is a perspective view of the internal structure of the cysupport. The perspective view which attached the internal structure of the rhino support which concerns on this invention to the seat frame of the seating part. The block diagram of the apparatus structure of the roll support of the vehicle seat with a roll support which concerns on this invention. The flowchart of use of the vehicle seat with a rhino support which concerns on this invention. The flowchart of the other use of the vehicle seat with rhino support according to the present invention. (A) and (b) are the cross-sectional schematic diagrams of the conventional rhino support.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Vehicle seat with rhino support 12 Seating part 15 Rhinocero support 17 Support plate 18 Turning apparatus 20 Drive apparatus 51 Pressure sensor 52 Control apparatus (ECU)

Claims (4)

A vehicle seat with a roll support of a cushion body provided at a front end portion of a seating portion,
Cysupport support means provided inside the Cysupport to support the Cysupport,
Rotating means for acting on the rhino support support means to rotate the rhino support in the vertical direction;
Drive means for causing the rotation by pressing the rotation means;
Pressure measuring means for measuring a pressing force generated between the driving means and the rotating means;
And a control means for controlling a pressing force applied to the rotating means by the driving means so as to adjust a pressing force measured by the pressure measuring means to a predetermined pressing force set in advance. With vehicle seat. The rotating means has a rotating shaft having a horizontal axis of the seating portion as a rotating shaft, and one end side is in contact with the support member with the rotating shaft in between, and the other end side is the drive Connected to the cylinder member of the means,
2. The rhino support is rotated through the support member when the rotating means rotates around the rotation axis by the axial movement of the cylinder member in the longitudinal direction. Vehicle seat with rhino support.   The control means controls the driving means based on a measured value of the pressing force by the pressure measuring means by any one of connection of an ignition switch, wearing of a seat belt or sensing of a passenger seating by a seating sensor. The vehicle seat with a rhino support according to claim 1 or 2.   4. The predetermined pressing force set in advance is controlled by the control unit based on a numerical value previously set in the control unit. Vehicle seat with rhino support described in 1.

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