JP2009040128A - Vehicle seat device - Google Patents

Abstract

A vehicle seat device capable of suppressing amplification of left and right vibrations of a seat back excited by vertical vibrations of a suspension even when a vehicle whose seat back side portions are not coupled to a vehicle body side travels on an uneven road surface. Get.
An bulging mechanism provided on the side of a seat back is in an operating state in which a side surface on the vehicle width direction outer side of the seat back is brought into contact with an inner side surface of a vehicle body side portion. The seat back 40 can be deformed between a release state in which the contact state between the side surface 44 side on the vehicle width direction outer side and the inner side surface 18A side of the vehicle body side portion 18 is released. For this reason, in the state where the bulging mechanism 54 is in the operating state 54Y, the seat back 40 is supported by the vehicle body side portion 18 even if a vibration load in the left-right direction acts on the seat back 40 during vehicle travel. The displacement of the seat back 40 in the left-right direction is limited.
[Selection] Figure 4

Description

  The present invention relates to a vehicle seat device disposed in a vehicle in which a seat back side portion is not coupled to a vehicle body side portion.

  In the vehicle seat device, for example, the rear seat may not be coupled to the body on the side surface of the seat back in order to enable sliding, reclining, and the like (see, for example, Patent Document 1). In such a structure, the resonance frequency of the vertical vibration of the suspension and the resonance frequency of the left and right vibration of the seat back are often almost equal.

For this reason, in this conventional structure, when the vertical vibration of the suspension is transmitted as roll vibration by the input from the uneven road surface while the vehicle is traveling, the horizontal vibration of the seat back is amplified by being excited by the vertical vibration of the suspension.
JP-A-10-226250

  In consideration of the above fact, the present invention amplifies the lateral vibration of the seat back excited by the vertical vibration of the suspension even when a vehicle whose seat back side portion is not coupled to the vehicle body side runs on an uneven road surface. It is an object to obtain a vehicle seat device that can be suppressed.

  According to a first aspect of the present invention, there is provided a vehicle seat device comprising: a seat cushion on which an occupant sits; and a rear end portion of the seat cushion that constitutes a seat rear portion; The seat back spaced from the inner surface of the vehicle, and the operation of contacting the side surface side of the seat back in the vehicle width direction and the inner surface side of the vehicle body side portion provided on the seat back side or the vehicle body side portion side A contact means that can be deformed between a state and a release state in which the contact state between the side surface side of the seat back in the vehicle width direction and the inner surface side of the vehicle body side portion is released. It is characterized by.

  According to the vehicle seat device of the first aspect of the present invention, the abutting means provided on the seat back side or the vehicle body side portion side is provided between the side surface side of the seat back in the vehicle width direction and the vehicle body side portion. It can be deformed between an operating state in which the side surface is brought into contact with and a released state in which the contact state between the side surface on the outer side in the vehicle width direction of the seat back and the inner side surface of the vehicle body side portion is released. Therefore, if the abutment means is in an operating state during vehicle travel, the vertical vibration of the suspension is transmitted as roll vibration by the input from the uneven road surface, and the vibration load in the lateral direction acts on the seat back. The seat back is supported on the side of the vehicle body, and displacement in the left-right direction is limited. In other words, the resonance frequency in the left-right direction of the seat back is significantly increased and greatly deviates from the resonance frequency of the vertical vibration of the suspension. This makes it difficult for the vehicle body vibration caused by the input from the uneven road surface during vehicle travel to be amplified by the seat back.

  A vehicle seat device according to a second aspect of the present invention is the vehicle seat device according to the first aspect, wherein the contact means is provided on the seat back side, and in the operating state, the inner side surface side of the vehicle body side portion. It is characterized by protruding.

  According to the vehicle seat device of the second aspect of the present invention, the contact means is provided on the seat back side and protrudes to the inner side surface of the vehicle body side portion in the operating state. Even if the relative position of the seat back with respect to the vehicle body side portion is changed by a reclining mechanism or the like, the side surface side of the seat back in the vehicle width direction and the inner side surface side of the vehicle body side portion come into contact with each other by operating the contact means.

  According to a third aspect of the present invention, there is provided a vehicle seat device according to the first or second aspect, further comprising seat detection means for detecting whether an occupant is seated on the seat cushion. When the seating detection means detects the occupant's seating, the contact means is set to the operating state except when an operation for setting the contact means to the release state is performed.

  According to the vehicle seat device of the present invention described in claim 3, when the seating detection means detects the seating of the occupant, the contact means is in a state other than the case where the operation of bringing the contact means into the release state is performed. When the occupant is seated, the side of the seat back outside the vehicle width direction and the side of the vehicle body are The inner surface side of the abuts.

  According to a fourth aspect of the present invention, there is provided a vehicle seat device according to the first or second aspect, further comprising vehicle speed detection means for detecting the speed of the vehicle, wherein the vehicle speed detection means exceeds a predetermined value. When the speed is detected, the contact means is set to the operating state except when an operation for setting the contact means to the release state is performed.

  According to the vehicle seat device of the present invention as set forth in claim 4, when a speed exceeding a predetermined value is detected by the vehicle speed detection means, this is the case except when an operation for bringing the contact means into a released state is performed. Since the contact means is in the operating state, when the vehicle travels at a speed exceeding a predetermined value, the side of the seat back on the outer side in the vehicle width direction, except when the operation is made to release the contact means And the inner surface side of the vehicle body side part abut.

  As described above, according to the vehicle seat device of the first aspect of the present invention, even if a vehicle whose seat back side portion is not coupled to the vehicle body side portion travels on an uneven road surface, It has an excellent effect that amplification of left and right vibrations of the seat back excited by vibration can be suppressed.

  According to the vehicle seat device according to claim 2, even when a front / rear slide mechanism or a reclining mechanism is applied, the seat is caused by an input from an uneven road surface when the vehicle travels with a relatively simple configuration. It has an excellent effect that the amplification of the lateral vibration of the back can be suppressed.

  According to the vehicle seat device of the third aspect, the side surface of the seat back in the vehicle width direction outside and the inner side surface of the vehicle body side can be brought into contact with each other even when the occupant does not operate separately. This has an excellent effect that the amplification of the left and right vibrations of the seat back when the vehicle is running can be suppressed.

  According to the vehicle seat device of the fourth aspect, when the vehicle travels at a speed exceeding a predetermined value even if the occupant does not separately operate, the lateral side of the seat back in the vehicle width direction and the side of the vehicle body The inner surface side can be brought into contact with each other, and this has an excellent effect that amplification of left and right vibrations of the seat back can be suppressed.

[First Embodiment]
A vehicle seat device according to a first embodiment of the present invention will be described with reference to FIGS. In these figures, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow IN indicates the vehicle width direction inner side.

  As shown in FIG. 1, the vehicle seat device 20 is disposed in a vehicle interior of the vehicle 10. The vehicle 10 in this embodiment is a vehicle of a vehicle type such as a minivan system provided with a seat slide mechanism, and the vehicle seat device 20 is applied to a vehicle rear seat (rear seat). In the vehicle 10, a vehicle body 12 and wheels 14 are connected by a suspension 16. The suspension 16 includes an arm 16A that connects the vehicle body 12 and the wheel 14 and a shock absorber 16B that includes a spring 116B and constitutes vibration mitigation means, and supports the wheel 14 with appropriate rigidity. ing. Here, the resonance frequency (unsprung resonance characteristic) of the vertical vibration in the suspension 16 is about 10 Hz to 20 Hz.

  As shown in FIG. 2, the vehicle seat device 20 disposed in the rear seat is a so-called bench seat type, and can be tilted to a seat cushion 30 on which an occupant is seated and a rear end portion of the seat cushion 30. And a headrest 50 that is provided at the upper end of the seatback 40 so as to be vertically adjustable and supports the head of the occupant. The seat cushion 30 has an upper surface portion as a seating portion for an occupant. In this embodiment, the seat cushion 30 is slidable in the vehicle front-rear direction by a slide mechanism portion 22 constituting a part of the vehicle seat device 20.

  As shown in FIGS. 2 and 3, a plurality of lower rails 24 constituting a part of the slide mechanism portion 22 are fixed to the vehicle body floor 19 on which the vehicle seat device 20 is disposed with the vehicle front-rear direction as a longitudinal direction. Arranged in a state. As shown in FIG. 3, an upper rail 26 that constitutes a part of the slide mechanism 22 is supported on the lower rail 24 so as to be slidable in the vehicle front-rear direction. A seat cushion frame 32 is fixed to the upper rail 26.

  The seat cushion frame 32 has a frame shape and functions as a skeleton member. The seat cushion frame 32 is disposed on the inner side of the seat cushion 30 and a seat cushion spring (not shown) is stretched over the seat cushion frame 32. A cushion pad (not shown) is disposed on the seat cushion frame 32 and the seat cushion spring. The seat back pad is set to a predetermined hardness using a resin such as urethane to create the shape of the seat cushion 30 and to be elastically deformable. The surface of the cushion pad is covered and adhered with a seat skin 33.

  A seat sensor 34 is disposed in the seat cushion 30 as seating detection means for detecting whether or not an occupant is seated on the seat cushion 30 (whether the occupant is seated). As the seating sensor 34, for example, a pressure sensitive pressure sensor type membrane switch or the like can be applied. A slide lock release lever 36 is provided on the lower side near the front end of the seat cushion 30. The slide lock release lever 36 can be operated in a predetermined direction, and a predetermined operation of the slide lock release lever 36 releases a locked state that prevents the seat cushion 30 from sliding. An operation detection sensor 38 is disposed at a position close to the upper rail 26 on the outer side in the vehicle width direction of the slide lock release lever 36. The operation detection sensor 38 is used for detection for detecting the operation state of the slide lock release lever 36.

  A reclining mechanism 52 that supports the seat back 40 in a tiltable manner is disposed on the rear end side of the seat cushion 30. The reclining mechanism 52 is provided with a reclining rod 52A having the seat width direction as an axial direction, and the seat back 40 rotates around the reclining rod 52A as a rotation center axis during reclining.

  The seat back 40 constitutes the rear portion of the seat, and in order to enable the above-described sliding and reclining, the outer side surface (side surface) 44 in the vehicle width direction is the inner side surface 18A (C pillar (quarter (quarter)) of the vehicle body side portion 18. The inner surface of the interior trim in the pillar) is separated. In the configuration in which the seat back 40 is separated from the inner side surface 18A of the vehicle body side portion 18, the rigidity in the left-right direction is lower than the comparative configuration in which the seat back is coupled to the vehicle body side portion. The resonance frequency of the left-right vibration in the seat back 40 having such a configuration is about 10 Hz to 20 Hz, which is substantially the same as the resonance frequency of the vertical vibration in the suspension 16 (see FIG. 1).

  The seat back 40 includes a seat back frame 42 that constitutes a skeleton portion. The seat back frame 42 is provided with a plurality of S springs (not shown) that support the back of the occupant and a seat back pad ( (Not shown) is attached. The seat back pad is set to a predetermined hardness using a resin such as urethane to create the shape of the seat back 40 and to be elastically deformable. The surface of the seat back pad is covered with a seat skin 46.

  In the upper part of the seat back 40, a cushion material 48, which is separate from the seat back pad, is disposed on the inner side of the seat cover 46 on the side surface (side surface) 44 on the outer side in the vehicle width direction. The cushion material 48 is formed in a dish shape opened toward the inner side in the vehicle width direction, and a bulging mechanism 54 as a contact means is provided in the recess 48A inside the opening. Note that the cushion material 48 slightly protrudes outward in the vehicle width direction, whereby the upper portion of the side portion of the seat back 40 on the outer side in the vehicle width direction protrudes (projects).

  The bulging mechanism 54 includes an electric pump 56 attached to the seat back frame 42. The electric pump 56 is an element grasped as fluid supply means in a broad sense. The electric pump 56 is operated by electric power supplied from a battery (not shown), and supplies (sends out) air to an air bag 58 constituting a part of the bulging mechanism 54. The air bag 58 is attached to the electric pump 56, and is inflated by being filled with air until the air pressure reaches a predetermined (standard) air pressure by the operation of the electric pump 56. Further, the electric pump 56 is provided with an exhaust port (not shown) so that the air in the air bag 58 can be discharged from the exhaust port under a predetermined condition.

  That is, as shown in FIG. 4, in the activated state 54Y, the bulging mechanism 54 protrudes toward the inner side surface 18A of the vehicle body side portion 18 by inflating the air bag 58. The side surface 44 side on the outer side in the width direction and the inner side surface 18A side of the vehicle body side portion 18 are brought into contact (contact), and such an operating state 54Y and the vehicle width of the seat back 40 shown in FIG. It can be deformed between a release state 54X in which the contact state (contact state) between the side surface 44 side on the outer side in the direction and the inner side surface 18A side of the vehicle body side portion 18 is released. Here, when the bulging mechanism 54 shown in FIG. 4 is in the operating state 54Y, the lateral rigidity of the seat back 40 is improved, and the lateral resonance frequency of the seat back 40 is greatly increased (as an example) 30 Hz to 40 Hz).

  Note that the air pressure in the air bag 58 when the bulging mechanism 54 is in the operating state 54Y reduces the vibration of the seat back 40 during traveling as a result of the lateral displacement of the seat back 40 being restricted when the air bag 58 is inflated. It is preferable to set the pressure so that it can be fully felt. With such a setting, the feeling that the seat back 40 vibrates left and right when the vehicle is traveling (so-called poor bull feeling) is greatly improved.

  A controller 60 that functions as control means is connected to the electric pump 56 that constitutes the bulging mechanism 54. A seating sensor 34 and an operation detection sensor 38 are connected to the controller 60. When the seating sensor 34 detects the seating of the occupant, the controller 60 detects the operation of the slide lock release lever 36 in the unlocking direction (that is, the bulging mechanism 54 is released). 54X (see FIG. 3)), the bulging mechanism 54 is set to the operating state 54Y, and when the seating sensor 34 does not detect the seating of the occupant, the operation detection sensor 38 locks the slide lock release lever 36. When an operation in the release direction is detected, the bulging mechanism 54 is controlled to be in the release state 54X as shown in FIG.

  The same applies when the reclining mechanism 52 is used (for example, when the locking mechanism (not shown) in the reclining mechanism 52 is released or when the reclining switch for electric tilt (not shown) is pressed). The bulging mechanism 54 is preferably brought into the released state 54X under the control of the controller 60.

(Action / Effect)
Next, the operation and effect of the above embodiment will be described.

  As shown in FIG. 1, when the vehicle 10 travels, if the road surface R has irregularities, the left and right wheels 14 vibrate up and down with various frequency components and phase relationships by the input from the road surface R. Is a vibration in a substantially vertical direction (in the direction of arrow A) that is in opposite phase on both the left and right sides. Such vibration is transmitted from the suspension 16 to the vehicle body (body) 12 side, whereby the vehicle body 12 vibrates in a substantially horizontal direction (arrow B direction) (sprung roll vibration). Due to the vibration of the vehicle body 12, a vibration load in a substantially lateral direction (arrow C direction) acts on the seat back 40 of the vehicle seat device 20.

  Here, in the vehicle seat device 20 according to the present embodiment, as shown in FIGS. 3 and 4, the bulging mechanism 54 provided on the seat back 40 side is the side surface of the seat back 40 on the outer side in the vehicle width direction. The operation state 54Y (see FIG. 4) in which the 44 side and the inner side surface 18A side of the vehicle body side portion 18 are brought into contact with each other, the side surface 44 side of the seat back 40 in the vehicle width direction and the inner side surface 18A side of the vehicle body side portion 18 It is possible to deform between the release state 54X (see FIG. 3) in which the contact state of the contact is released. Therefore, when the vehicle travels, as shown in FIG. 4, if the bulging mechanism 54 is in the operating state 54Y, that is, the side surface 44 side of the seat back 40 in the vehicle width direction outside and the inner side surface 18A of the vehicle body side portion 18. When the contact state with the gap between the sides is closed, the vertical vibration of the suspension 16 (see arrow A direction) is transmitted as roll vibration (see arrow B direction) by the input from the uneven road surface shown in FIG. Even if a vibration load in the lateral direction (arrow C direction) is applied to the seat back 40, as shown in FIG. (In FIG. 4, only the left side of the seat back 40 is shown, and the right side is not shown).

  That is, when the bulging mechanism 54 is in the operating state 54Y, the left-right resonance frequency of the seat back 40 is the left-right resonance frequency (10 Hz) when the seat back 40 is separated from the inner side surface 18A of the vehicle body side portion 18. It is significantly higher than the resonance frequency (about 10 Hz to 20 Hz) of the vertical vibration of the suspension 16 (see FIG. 1) (as an example, it is about 30 Hz to 40 Hz). This makes it difficult for the seat back 40 to amplify vehicle body vibration caused by input from the uneven road surface during vehicle travel.

  Further, in the vehicle seat device 20 according to the present embodiment, the bulging mechanism 54 is automatically controlled. More specifically, when the seating of the occupant is detected (detected) by the seating sensor 34, the operation detection sensor 38 detects the operation in the unlocking direction of the slide lock releasing lever 36, except for the case shown in FIG. As shown in FIG. 4, the bulging mechanism 54 is brought into the operating state 54 </ b> Y, that is, when the air bag 58 is inflated by the electric pump 56, the cushion material 48 and the seat skin 46 (which becomes a covering portion of the cushion material 48). Is pushed out (projected out) in the vehicle width direction and is brought into contact with the side surface 44 side of the seat back 40 in the vehicle width direction outside and the inner side surface 18A side of the vehicle body side portion 18. 3 is not detected (sensed), as shown in FIG. 3, the bulging mechanism 54 is set to the released state 54X, that is, the air in the air bag 58 is discharged to the electric pump 56. Mouth and allowed (not shown) is discharged from releasing the contact between the inner surface 18A side of the vehicle width direction outer side surface 44 side and the vehicle body side portion 18 of the seat back 40 in the air bag 58 is deflated it.

  Therefore, when the occupant is seated, as shown in FIG. 4, the side surface 44 side of the seat back 40 in the vehicle width direction outside and the inner side surface 18A side of the vehicle body side portion 18 come into contact with each other before the vehicle travels. When the occupant leaves after the vehicle stops, as shown in FIG. 3, the contact state between the side surface 44 side of the seat back 40 in the vehicle width direction outside and the inner side surface 18 </ b> A side of the vehicle body side portion 18 is released. . Therefore, the occupant does not need to operate the bulging mechanism 54 separately.

  Further, when the operation detection sensor 38 detects an operation of the slide lock release lever 36 in the unlocking direction, the bulging mechanism 54 is set to the release state 54X. 30 and the seat back 40 can be slid in the longitudinal direction of the vehicle (compatible with the longitudinal sliding mechanism). Even when the reclining mechanism 52 is used, if the bulging mechanism 54 is brought into the released state 54X under the control of the controller 60, the tilt angle (reclining angle) of the seat back 40 can be easily changed by a seated occupant. Will be.

  Furthermore, in the vehicle seat device 20 according to the present embodiment, the bulging mechanism 54 is provided on the seat back 40 side and protrudes toward the inner side surface 18A of the vehicle body side portion 18 in the operating state 54Y shown in FIG. Although the configuration is relatively simple, for example, even if the relative position of the seat back 40 with respect to the vehicle body side portion 18 is changed by the slide mechanism portion 22 or the reclining mechanism 52, the bulging mechanism 54 operates, so that the seat back The side surface 44 side on the outer side in the vehicle width direction of 40 and the inner side surface 18A side of the vehicle body side portion 18 can be brought into contact with each other.

  As described above, according to the vehicle seat device 20 according to the present embodiment, the seat back 40 on the outer side surface 44 side and the vehicle body side portion 18 of the seat back 40 can be seated without being operated separately by the occupant. The side surface 18A can be brought into contact with the vehicle body side 18 so that even if the vehicle 10 in which the side portion of the seat back 40 is not coupled to the vehicle body side portion 18 travels on an uneven road surface (input from the uneven road surface during vehicle travel). However, amplification of the lateral vibration of the seat back 40 excited by the vertical vibration of the suspension 16 (see FIG. 1) (in other words, unpleasant lateral vibration of the seat back 40) can be suppressed.

[Modification of First Embodiment]
Next, a modified example of the vehicle seat device 20 according to the first embodiment of the present invention will be described with reference to FIGS. 3 and 4. This modification is characterized in that the operation of the bulging mechanism 54 is controlled (controlled) using a vehicle speed sensor 62 as vehicle speed detection means instead of the seating sensor 34.

  As shown in FIG. 3, the controller 60 is connected to a vehicle speed sensor 62 that is disposed at an appropriate position of the vehicle and detects the speed of the vehicle. When the vehicle speed sensor 62 detects a speed exceeding a predetermined value (for example, a speed exceeding a preset value of 0 km / h or a forward speed exceeding a preset value of 20 km / h), the controller 60 detects an operation. Except when the sensor 38 detects an operation of the slide lock release lever 36 in the unlocking direction (when the operation is performed to bring the bulging mechanism 54 into the released state 54X), as shown in FIG. When the speed exceeding the predetermined value is not detected by the vehicle speed sensor 62 and when the operation detection sensor 38 detects the operation of the slide lock release lever 36 in the unlocking direction, the state shown in FIG. As described above, the bulging mechanism 54 is controlled to be in the release state 54X.

  According to such a configuration, when the vehicle 10 (see FIG. 1) travels at a speed exceeding a predetermined value, the operation detection sensor 38 detects an operation in the unlocking direction of the slide lock releasing lever 36 ( 4 except for the operation of bringing the bulging mechanism 54 into the release state 54X), as shown in FIG. 4, the side surface 44 side of the seat back 40 on the outer side in the vehicle width direction and the inner side surface 18A side of the vehicle body side portion 18 When the vehicle 10 (see FIG. 1) travels at a speed exceeding a predetermined value and stops, as shown in FIG. 3, the side surface 44 side of the seat back 40 on the outer side in the vehicle width direction is displayed. The contact state of the vehicle body side portion 18 with the inner side surface 18A side is released. Note that the operation detection sensor 38 detects the operation of the slide lock release lever 36 in the unlocking direction as described above.

  In this way, even when the occupant does not operate separately, when the vehicle 10 (see FIG. 1) travels at a speed exceeding a predetermined value, the side surface 44 side on the vehicle width direction outer side of the seat back 40 and the inside of the vehicle body side portion 18 The side surface 18A can be brought into contact with the side surface 18A, so that even if the vehicle 10 in which the side portion of the seat back 40 is not coupled to the vehicle body side portion 18 travels on the uneven road surface, the suspension 16 (see FIG. 1). Amplification of the left-right vibration of the seat back 40 excited by the vertical vibration can be suppressed.

[Second Embodiment]
Next, a vehicle seat device according to a second embodiment of the present invention will be described with reference to FIGS. 5 and 6 show a vehicle seat device 66 according to a second embodiment of the present invention in a front view configuration diagram. As shown in these drawings, the vehicular seat device 66 is provided with an electric expansion / contraction body (electric expansion / contraction bar) 68 as contact means instead of the bulging mechanism 54 (see FIG. 3). This is different from the vehicle seat device 20 (see FIG. 3) according to the embodiment. Other configurations are substantially the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  FIG. 7 shows the expansion / contraction state of the electric expansion / contraction body 68 that can expand and contract. 7A shows the contracted state (shortest state) of the electric telescopic body 68, and FIG. 7B shows the extended state of the electric telescopic body 68. As shown in FIG. 7, the electric telescopic body 68 can be expanded and contracted in the axial direction, and the electric telescopic body 68 is electrically expanded and contracted.

  As shown in FIGS. 5 and 6, the electric stretchable body 68 is provided in the recess 48 </ b> A of the cushion material 48 in the seat back 40, and the axial direction thereof is disposed with respect to the seat width direction. In the operating state 68Y shown in FIG. 6, the electric telescopic body 68 protrudes toward the inner side surface 18A of the vehicle body side portion 18, and the side surface 44 side on the vehicle width direction outer side of the seat back 40 and the inner side surface 18A side of the vehicle body side portion 18 , Such an operating state 68Y, the side surface 44 side of the seat back 40 in the vehicle width direction and the inner side surface 18A side of the vehicle body side portion 18 shown in FIG. It is possible to deform between the released state 68X in which the contact state (close contact state) is released.

  Note that the axial length of the electric telescopic body 68 when the electric telescopic body 68 is in the operating state 68Y shown in FIG. 6 is such that the left and right displacement of the seat back 40 is changed by setting the electric telescopic body 68 to the operating state 68Y. It is preferable to set the length that can be sufficiently restricted, that is, the length that can sufficiently realize the vibration reduction of the seat back 40 during traveling.

  The electric telescopic body 68 is connected to the controller 60. When the seating sensor 34 detects the seating of the occupant, the controller 60 detects that the operation detection sensor 38 has operated the slide lock release lever 36 in the unlocking direction (that is, the electric telescopic body 68 is released). The electric telescopic body 68 is set to the active state 68Y except when the operation sensor 68 is operated, and when the seating sensor 34 does not detect the seating of the occupant, the operation detection sensor 38 operates the slide lock release lever 36 in the unlocking direction. Is detected, the electric telescopic body 68 is controlled to be in the release state 68X.

  Also with the above configuration, the same operations and effects as those of the first embodiment described above can be obtained. Further, as a modified example of the vehicle seat device 66 according to the second embodiment of the present invention, if the operation of the electric telescopic body 68 is controlled (controlled) using the vehicle speed sensor 62 instead of the seating sensor 34, the above-described operation is performed. Operations and effects similar to those of the modification of the second embodiment can be obtained.

[Third Embodiment]
Next, a vehicle seat device 70 according to a third embodiment of the present invention will be described with reference to FIGS. Note that components that are substantially the same as those in the first and second embodiments are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 8, the vehicle seat device 70 includes a hydraulic mechanism 72. The hydraulic mechanism 72 includes an input unit 74 provided in the seat cushion 30 and serving as a seating detection unit, and an output unit 80 as a contact unit provided in the recess 48A of the cushion material 48 in the seat back 40. They are connected by a pipe 78.

  The input unit 74 also has a function of detecting whether or not an occupant is seated on the seat cushion 30, and includes an accommodation container 76 in the seat cushion 30. The container 76 is formed in a substantially short cylindrical shape with a bottomed large diameter that can be elastically deformed, and is deformed by pressing from above the seat (see FIG. 9). The storage container 76 is preferably disposed over a wide range so as to correspond to the seating surface of the seat cushion 30. A liquid chamber 76A is formed in the storage container 76, and hydraulic oil is stored in the liquid chamber 76A. The storage container 76 is arranged so that the axial direction thereof is the seat vertical direction, and the bottom wall portion 76 </ b> B which is one end side in the axial direction is fixed to the seat cushion frame 32. The bottom wall 76B of the container 76 is formed with a communication hole 76C for circulating hydraulic oil, and one end of a pipe (pipe) 78 for circulating hydraulic oil is fixed to the communication hole 76C.

  The other end of the pipe 78 is fixed to a communication hole 82 </ b> B for circulating hydraulic oil in the hydraulic cylinder 82 in the output unit 80. The hydraulic cylinder 82 is formed in a bottomed short cylindrical shape, and is arranged such that its axial direction is the seat width direction, and a bottom wall portion 82A that is one end side (inner side in the seat width direction) of the axial direction is a seat back frame. 42 is fixed. In the hydraulic cylinder 82, a bag-like contraction body 84 is disposed and fixed to the communication hole 82B side. The contraction body 84 can flow hydraulic oil from the pipe 78 side, and can be contracted in the seat width direction by the hydraulic oil. A piston 86 is attached to the outer side of the contraction body 84 in the sheet width direction. The piston 86 is formed in a short cylindrical shape and is arranged with its axial direction as the seat width direction, and can move in the axial direction of the hydraulic cylinder 82 in accordance with the hydraulic oil supplied from the pipe 78 to the contraction body 84. It has become.

  One end of a tension coil spring 88 is fixed to the inside of the piston 86 in the seat width direction, and the other end of the coil spring 88 is fixed to the bottom wall portion 82 </ b> A of the hydraulic cylinder 82. The piston 86 is urged inward in the seat width direction by a coil spring 88. As a result, the piston 86 is housed in a predetermined position in the hydraulic cylinder 82 by the urging force of the coil spring 88 when the hydraulic pressure due to the hydraulic oil drops.

  With such a configuration, in the operating state 80Y shown in FIG. 9, the output unit 80 projects toward the inner side surface 18A of the vehicle body side portion 18, and the side surface 44 side and the vehicle body side portion 18 on the outer side in the vehicle width direction of the seat back 40. The operation state 80Y, the side surface 44 side on the vehicle width direction outer side of the seat back 40 shown in FIG. 8, and the inner side surface of the vehicle body side portion 18 are brought into contact with (in close contact with) the inner side surface 18A side. It can be deformed between the release state 80X in which the contact state (contact state) with the 18A side is released.

  A pipe 78 that connects the input unit 74 and the output unit 80 is partly disposed at the lower side of the seat cushion 30 and a hydraulic pressure increase canceling mechanism 90 is provided.

  As shown in FIG. 10, the hydraulic pressure increase canceling mechanism 90 includes a cylindrical portion 92 that is integrated with the pipe 78 and penetrates in the seat vertical direction. The pipe 78 is bent at a substantially right angle inside the cylindrical portion 92 (see FIG. 10A), and a reservoir 79 (see FIG. 10B) is provided on the lower side of the seat from the bent portion to store the hydraulic oil. It can be done. A piston 94 is accommodated in the cylindrical portion 92 and connected to the slide lock release lever 36 (see FIG. 8) via a rod 96. The piston 94 is interlocked with the slide lock release lever 36 and can move in the seat vertical direction along the inner surface of the cylindrical portion 92.

  The piston 94 includes a small-diameter piston upper portion 94A and a large-diameter piston lower portion 94B, and a through-hole 95 penetrating in the seat width direction is formed at the lowermost portion of the piston upper portion 94A. As shown in FIG. 10 (A), the through hole 95 has substantially the same diameter as the pipe 78, and constitutes a part of the hydraulic oil flow path in a state where the piston 94 is disposed at a predetermined position. . Further, as shown in FIG. 10B, in a state where the piston 94 moves to the lower side of the seat, the piston upper part 94A divides the flow path of the pipe 78, and the piston lower part 94B opens the reservoir 79. It has become.

  As a result, as shown in FIG. 9, when the hydraulic fluid is pushed out from the liquid chamber 76A by the occupant's seating (when the seating of the occupant is detected by the input unit 74), the slide lock release lever 36 is locked. Except when the piston 94 (see FIG. 10) is moved to the lower side of the seat by the operation in the release direction (when the output unit 80 is set to the release state 80X (see FIG. 8)), the hydraulic oil is circulated. Therefore, the output unit 80 is set to be in the operating state 80Y. Further, when the hydraulic oil is returned to the liquid chamber 76A due to the occupant's leaving (when the seating of the occupant is not detected by the input unit 74) and the slide lock release lever 36 is operated in the unlocking direction, the piston 94 (FIG. 10). 8), the output unit 80 is set to be in the release state 80X by the circulation of the hydraulic oil and the bias of the coil spring 88, as shown in FIG.

  In place of the configuration of the input unit 74 and the configuration of the output unit 80 in the present embodiment, for example, a hydraulic cylinder, a piston disposed in the hydraulic cylinder, and a shaft core portion of the piston are provided upright. You may arrange | position the structure comprised including a piston rod and the plate fixed to the front-end | tip part of the said piston rod which penetrated the head part of the said hydraulic cylinder.

(Action / Effect)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 8, before the occupant is seated, the side surface 44 side of the seat back 40 on the outer side in the vehicle width direction and the inner side surface 18 </ b> A side of the vehicle body side portion 18 are separated from each other. When an occupant is seated in this state, the output unit 80 of the hydraulic mechanism 72 is in the operating state 80Y, as shown in FIG. The side surface 44 side on the outer side in the vehicle width direction and the inner side surface 18A side of the vehicle body side portion 18 are in contact with each other.

  More specifically, when an occupant is seated, a load acts on the container 76 in the input portion 74 of the hydraulic mechanism 72 from above the seat, and a part of the hydraulic oil in the liquid chamber 76A flows out to the pipe 78. To do. When the hydraulic oil flows through the piping 78 toward the output unit 80 and flows into the contraction body 84 in the output unit 80, the contraction body 84 expands and presses the piston 86 outward in the seat width direction. As a result, while the piston 86 moves to the inner side surface 18A side of the vehicle body side portion 18, the cushion material 48 and the seat skin 46 (which covers the cushion material 48) are pressed to project this portion. For this reason, before the vehicle travels, the upper portion of the side surface 44 on the outer side in the vehicle width direction of the seat back 40 protrudes toward the inner side surface 18A of the vehicle body side portion 18 and comes into contact with the inner side surface 18A of the vehicle body side portion 18. The resonance frequency in the left-right direction increases.

  As a result, even if the vehicle 10 in which the side portion of the seat back 40 is not coupled to the vehicle body side portion 18 travels on the uneven road surface (even if there is an input from the uneven road surface during vehicle travel), the suspension 16 (FIG. 1). Amplification of the left and right vibrations of the seat back 40 excited by the vertical vibrations (see below) (in other words, unpleasant left and right vibrations of the seat back 40) can be suppressed.

  Further, when the occupant leaves the seat after the vehicle stops, as shown in FIG. 8, the load from the upper side of the seat on the storage container 76 in the input unit 74 is released, and the storage container 76 is restored to its original shape. At this time, a part of the hydraulic oil in the pipe 78 flows into the storage container 76, a part of the hydraulic oil in the contraction body 84 in the output unit 80 flows out to the pipe 78, and the piston 86 is biased by the biasing force of the coil spring 88. Moves inward in the sheet width direction. That is, when the hydraulic pressure (hydraulic pressure) in the contracting body 84 is lowered, the piston 86 is housed in the initial position by the urging force of the coil spring 88. For this reason, the output part 80 is deformed into the released state 80X, and the contact state between the side surface 44 side of the seat back 40 on the outer side in the vehicle width direction and the inner side surface 18A side of the vehicle body side part 18 is released.

  Further, when the slide lock release lever 36 is operated in the lock release direction by the occupant, as shown in FIG. 10B, the rod 96 and the piston 94 move in conjunction with the seat lower side. As a result, the path of the piping 78 is divided to block the flow of hydraulic oil toward the liquid chamber 76A (see FIG. 8), and the reservoir 79 is opened to connect to the output unit 80 (see FIG. 8) side. A part of the hydraulic oil in 78 is accommodated (retracted) in the reservoir 79. At this time, a part of the hydraulic oil in the contraction body 84 shown in FIG. 8 flows out into the pipe 78, the hydraulic pressure in the contraction body 84 decreases, and the piston 86 is moved inward in the seat width direction by the biasing force of the coil spring 88. Move to. For this reason, the output part 80 is deformed into the released state 80X, and the contact state between the side surface 44 side of the seat back 40 on the outer side in the vehicle width direction and the inner side surface 18A side of the vehicle body side part 18 is released.

[Supplementary explanation of the embodiment]
In the first to third embodiments, the contact means (the bulging mechanism 54, the electric telescopic body 68, and the output unit 80) of the operating states 54Y, 68Y, and 80Y are provided on the outer side in the vehicle width direction of the seat back 40. A part of the side surface 44 (side surface side of the seat back in the vehicle width direction) and a part of the inner side surface 18A of the vehicle body side portion 18 (inner side surface side of the vehicle body side portion) are brought into contact with each other. The “side surface side of the seat back in the vehicle width direction” contacted by the means may be a separate member protruding from the side surface of the seat back in the vehicle width direction outside, and the contact means in the operating state is in contact The “inner side surface of the vehicle body side portion” may be a separate member protruding from the inner surface of the vehicle body side portion.

  In the first to third embodiments, the contact means (the bulging mechanism 54, the electric telescopic body 68, and the output unit 80) are provided on the seat back 40 side. Other abutting means such as a protruding mechanism provided on the side of the vehicle body and capable of projecting to the side surface of the seat back in the vehicle width direction may be used. The operating state in which the side surface side of the back in the vehicle width direction and the inner surface side of the vehicle body side abut, and the contact state between the side surface of the seat back in the vehicle width direction outer side and the inner surface side of the vehicle body side portion It may be possible to deform between the released state and the released state.

  In the first to third embodiments, the contact means (the bulging mechanism 54, the electric telescopic body 68, and the output unit 80) are in an activated state according to the seating state and the detection speed of the vehicle speed sensor 62. However, for example, when the engine key is inserted into the key cylinder, when the ignition switch is turned on, when the engine is started, the contact means may be activated at another timing before the vehicle travels.

  In the first and second embodiments and the modifications thereof, the controller 60 is connected to the seating sensor (seat detection means) 34, the operation detection sensor 38, and the vehicle speed sensor (vehicle speed detection means) 62, so that the contact means. Although the deformation of the bulging mechanism 54 and the electric expansion / contraction body 68 is controlled, for example, an operation switch that outputs a signal that instructs the deformation to the operation state and the release state of the contact means when operated, The controller (60) may be connected to the controller (60), and the controller (60) may deform the contact means between the operation state and the release state in accordance with a signal output from the operation switch.

  Further, in the first to third embodiments, the vehicle seat devices 20, 66, and 70 are applied to the vehicle rear seat (rear seat), but the vehicle seat device is used as the vehicle front seat (front seat). ).

  In the modified examples of the first and second embodiments, the vehicle speed detection means is the vehicle speed sensor 62 disposed at an appropriate position of the vehicle. The vehicle speed detection means uses, for example, information communication technology. Other vehicle speed detection means such as detecting the speed of the vehicle by receiving vehicle speed information from outside the vehicle by an intelligent transport system (ITS) that is an intelligent road traffic system may be used.

1 is a schematic overall configuration diagram showing the overall configuration of a vehicle to which a vehicle seat device according to a first embodiment of the present invention is applied, as viewed from the front of the vehicle. 1 is a perspective view showing a part of a vehicle seat device and a vehicle body side part according to a first embodiment of the present invention. 1 is an overall configuration diagram illustrating a vehicle seat device according to a first embodiment of the present invention as viewed from the front of a vehicle. A case where the bulging mechanism is in a released state is shown. 1 is an overall configuration diagram illustrating a vehicle seat device according to a first embodiment of the present invention as viewed from the front of a vehicle. The case where the bulging mechanism is in an operating state is shown. It is a whole block diagram which shows the vehicle seat apparatus which concerns on the 2nd Embodiment of this invention by vehicle front view. The case where an electric expansion-contraction body exists in a cancellation | release state is shown. It is a whole block diagram which shows the vehicle seat apparatus which concerns on the 2nd Embodiment of this invention by vehicle front view. The case where an electric expansion-contraction body exists in an operation state is shown. It is a perspective view which shows the expansion-contraction state of the electric expansion-contraction body in the 2nd Embodiment of this invention. FIG. 7A shows a contracted state of the electric stretchable body. FIG. 7B shows an extended state of the electric stretchable body. It is a whole block diagram which shows the vehicle seat apparatus which concerns on the 3rd Embodiment of this invention by vehicle front view. A case where the output unit is in a release state is shown. It is a whole block diagram which shows the vehicle seat apparatus which concerns on the 3rd Embodiment of this invention by vehicle front view. The case where an output part is in an operation state is shown. It is sectional drawing which shows the hydraulic pressure rise cancellation mechanism in the 3rd Embodiment of this invention. FIG. 10A shows a normal state. FIG. 10B shows a state where the slide lock release lever is operated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 18 Car body side part 18A Inner side surface 20 Vehicle seat apparatus 30 Seat cushion 34 Seating sensor (sitting detection means)
40 seat back 44 side surface in the vehicle width direction 54 bulge mechanism (contact means)
54X Release state 54Y Operating state 62 Vehicle speed sensor (vehicle speed detection means)
66 Vehicle seat device 68 Electric telescopic body (contact means)
68X Release state 68Y Operating state 70 Vehicle seat device 74 Input section (sitting detection means)
80 Output section (contact means)
80X release state 80Y operation state

Claims (4)

A seat cushion on which an occupant sits,
A seat back disposed at a rear end portion of the seat cushion to constitute a seat rear portion, a side surface on the outer side in the vehicle width direction being separated from an inner side surface of the vehicle body side portion; and
An operating state that is provided on the seat back side or the vehicle body side portion side and contacts the side surface side of the seat back in the vehicle width direction and the inner surface side of the vehicle body side portion; and the vehicle width direction of the seat back A contact means that is deformable between an outer side surface side and a released state in which the contact state between the inner side surface side of the vehicle body side portion is released; and
A vehicle seat device comprising:   2. The vehicle seat device according to claim 1, wherein the contact means is provided on the seat back side and protrudes toward an inner side surface of the vehicle body side portion in the operating state. Seating detecting means for detecting whether or not an occupant is seated on the seat cushion;
When the seating detection means detects the seating of an occupant, the contact means is set to the operating state except when an operation for setting the contact means to the release state is performed. The vehicle seat device according to claim 1 or 2. Vehicle speed detecting means for detecting the speed of the vehicle,
When the vehicle speed detection means detects a speed exceeding a predetermined value, the contact means is set to the operating state except when an operation for setting the contact means to the release state is performed. The vehicle seat device according to claim 1 or 2.

Images