JP2018070075A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which can effectively provide vibration while reducing foreign-body feeling to a seated occupant.SOLUTION: A vehicle seat 10 includes: a seat body 12 which is formed including a seat cushion 14 and a seat back 16 and provided with a seat pad 20 located therein; a vibration member 24 disposed on a surface of the seat pad 20 which is located at the opposite side of a surface supporting an occupant P; and an air bag 30 which is provided at the opposite side of the vibration member 24 across the seat pad 20, is supplied with air to expand, and is shrunk by air being discharged therefrom.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle seat that can impart vibration to a seated occupant.

  As a vehicle seat having a structure capable of locally applying vibration to a seated occupant, a structure in which a plurality of vibration members are arranged inside a seat back is conventionally known (see, for example, Patent Document 1). ).

JP 2007-242390 A

  However, when a plurality of vibration members are arranged inside the seat back, when the seated occupant comes into contact with the seat back, the vibration member may feel a foreign object. In order to reduce the feeling of foreign matter in the seat back with respect to the seated occupant, it is preferable to arrange the vibration member on the back side of the seat back. In this case, vibration is effectively applied to the seated occupant. It becomes difficult. As described above, there is still room for improvement in the structure that effectively gives vibration to the seated occupant while reducing the foreign object feeling.

  Therefore, an object of the present invention is to obtain a vehicle seat that can effectively impart vibration to a seated occupant while reducing the feeling of foreign objects.

  In order to achieve the above object, a vehicle seat according to claim 1 of the present invention includes a seat cushion and a seat back, and includes a seat body provided with a seat pad therein, and the seat. A vibration member disposed on the surface of the pad opposite to the surface supporting the occupant, and provided on the opposite side of the vibration member across the seat pad, expands when air is supplied, and discharges the air And an air bag that contracts by being compressed.

  According to the first aspect of the present invention, the vibration member is disposed on the surface opposite to the surface of the seat pad provided inside the seat body that supports the occupant, and is opposite to the vibration member across the seat pad. On the side, there is provided an air bag that expands when air is supplied and contracts when air is discharged.

  Therefore, a foreign object feeling for the seated occupant is reduced as compared with the configuration in which the vibration member is disposed on the surface of the seat pad that supports the occupant. In addition, the seat pad is locally compressed by the inflated air bag, and the rigidity of the portion interposed between the occupant and the vibration member is improved by pressing a part of the occupant's body through the skin. Is done. Therefore, the vibration from the vibration member is effectively applied to the occupant.

  As described above, according to the present invention, it is possible to effectively apply vibration to the seated occupant while reducing the foreign object feeling.

It is a perspective view which shows the vehicle seat which concerns on this embodiment. It is a side view which shows a seat back when an air bag contracts in the state where a crew member sits on a vehicle seat concerning this embodiment in a section. It is a partial expanded sectional view of a seat back showing when an air bag is inflated in the state where a crew member sits on a vehicle seat concerning this embodiment. (A) It is a perspective view which shows an example of the vibration member arrange | positioned at the vehicle seat which concerns on this embodiment. (B) It is a perspective view which shows another example of the vibration member arrange | positioned at the vehicle seat which concerns on this embodiment.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. For convenience of explanation, an arrow UP appropriately shown in each drawing is an upward direction of the vehicle seat 10, an arrow FR is a forward direction of the vehicle seat 10, and an arrow RH is a right direction of the vehicle seat 10. Therefore, in the following description, when the vertical, front / rear, and left / right directions are described without special mention, the vertical / vertical direction, the front / rear front / rear, and the left / right (vehicle width direction) of the vehicle seat 10 are shown. Shall.

  In the vehicle seat 10 according to the present embodiment, a surface that supports an occupant (where an occupant is seated) is referred to as a “front surface”, and a surface that is opposite to the front surface is referred to as a “back surface”. Therefore, also in a seat pad 20 and an air bag 30 which will be described later constituting the vehicle seat 10, the surface side on which the occupant is seated is the "front surface" side, and the surface side opposite to the front surface side is the "back surface" ”Side.

  As shown in FIG. 1, the vehicle seat 10 extends upward from a seat cushion 14 that supports the buttocks and thighs of a seated occupant P (see FIG. 2) and the rear end of the seat cushion 14. And a seat back 16 including a seat back 16 that supports the waist and back of the occupant P. A headrest 18 that supports the head of the occupant P is provided at the upper end of the seat back 16.

  As shown in FIGS. 2 and 3, the seat back 16 includes a seat pad 20 made of a cushion body and a skin 22 that covers the seat pad 20. The seat pad 20 is made of, for example, a foamed resin such as urethane foam, and at least the surface skin 22 is configured to be able to bulge as the air bag 30 described later inflates. The skin 22 also constitutes the design surface of the vehicle seat 10.

  The seat cushion 14 also has a seat pad (not shown) made of a cushion body and a skin 22 (see FIG. 1) covering the seat pad. A plurality of vibration members 24 electrically connected to a control device, which will be described later, are disposed on the back surface (back surface) of the seat back 16, and the control device is also disposed on the back surface (lower surface) of the seat cushion 14. A plurality of electrically connected vibration members (not shown) are arranged.

  That is, each vibration member 24 is attached to a support member 17 provided on the back side of the seat back 16 and a support member (not shown) provided on the back side of the seat cushion 14. As the vibrating member 24, a known eccentric motor type vibrator 26 as shown in FIG. 4A, a known voice coil type vibrator 28 as shown in FIG. .

  In the eccentric motor type vibrator 26, the eccentric pendulum 26 </ b> B is rotated by a motor provided in the vibrator body 26 </ b> A, so that a plurality of continuous vibrations can be applied to the occupant P. In the voice coil vibrator 28, the coil bobbin 28B enters and exits in the direction of the arrow by an electromagnet provided in the vibrator main body 28A, so that only one vibration can be applied to the occupant P.

  1 to 3, a plurality of air bags 30 are provided inside the seat cushion 14 and the seat back 16 constituting the seat body 12 of the vehicle seat 10. More specifically, in the seat back 16, the air bag 30 expands when air is supplied to the opposite side of each vibration member 24 across the seat pad 20 and contracts when air is discharged. Is provided.

  Similarly, in the seat cushion 14, the air bag 30 (see FIG. 1) expands when air is supplied to the opposite sides of each vibration member across the seat pad and contracts when air is discharged. ) Is provided. Each air bag 30 and each vibration member 24 are arranged in a pair of left and right at a substantially central portion in the vertical direction in the seat back 16, for example, as shown in FIG. 1, and at a substantially central portion in the front and rear direction in the seat cushion 14. It is arranged in a pair of left and right.

  Each air bag 30 is made of a stretchable material such as a resin material such as polyurethane or a rubber material, and has a substantially circular shape when viewed from the direction orthogonal to the left-right direction (vehicle width direction). A large-diameter portion 32 and a small-diameter portion 34 formed integrally with the large-diameter portion 32 and capable of communicating with air are configured (see FIG. 3).

  For example, the air bag 30 provided on the seat back 16 is provided between the seat pad 20 and the skin 22 by fixing the back surface of the air bag 30 to the front surface of the seat pad 20 with a double-sided tape or an adhesive. That is, the back surface of the large diameter portion 32 is fixed to the surface of the seat pad 20, and the surface of the small diameter portion 34 is arranged in contact with the back surface of the skin 22.

  Further, in the seat body 12 (in the seat back 16 or the seat cushion 14), air is supplied to and discharged from each air bag 30, and at least the air bag 30 on the seat back 16 side and the seat cushion 14 side. An air supply / exhaust device (not shown) for individually inflating and contracting the air bag 30 and a control device (not shown) for controlling the air supply / exhaust device and each vibration member 24 are provided. The control device is electrically connected to a peripheral information detection sensor (not shown) and the like.

  Therefore, the control device controls the air supply / exhaust device and each vibration member 24 based on the detection result detected by the peripheral information detection sensor or the like, thereby inflating each air bag 30 (individually) to thereby change the seat pad 20. While compressing in the thickness direction, the back and thighs (part of the body) of the occupant P are pressed through the skin 22 and the vibration member 24 is vibrated. Thereby, as will be described later, vibration is easily transmitted to the back and thighs of the occupant P via each air bag 30.

  Next, the operation of the vehicle seat 10 according to the present embodiment configured as described above will be described.

  For example, when the vehicle is parked or departed, or when turning around an intersection or an alley, the surrounding information detection sensor detects that a person or an obstacle is present at a position that becomes a blind spot from the occupant P. Under the control of the control device, for example, the air bag 30 on the seat back 16 side is inflated as shown in FIG.

  That is, the seat pad 20 is compressed in the thickness direction by the inflated air bag 30, and the skin 22 is inflated toward the occupant P, and the back portion of the occupant P is pressed. In other words, the rigidity of a part of the seat back 16 including the inclusion between the vibration member 24 and the occupant P, that is, the seat pad 20 and the air bag 30 is increased.

  Therefore, along with this state, when the vibration member 24 on the seat back 16 side vibrates under the control of the control device, the vibration is spot-like on the back of the occupant P via the inclusion (a part of the seat back 16). It is transmitted directly (effectively). Thereby, the passenger | crew P can recognize correctly that a person, an obstruction, etc. exist in the position used as the blind spot, and can improve the safety | security in a vehicle.

  Thus, according to the vehicle seat 10 according to the present embodiment, the vibration from the vibration member 24 can be effectively applied to the occupant P using the air bag 30. When the vibrating member 24 is not disposed on the surface side of the seat pad 20 and the air bag 30 is not inflated as shown in FIG. 2, the skin 22 is not inflated by the air bag 30. In normal times, the occupant P seated on the vehicle seat 10 does not feel a foreign object (reducing the sensation of a foreign object), and there is no possibility that the comfort of the occupant P is impaired.

  Further, what is electrically connected to the control device is not limited to the peripheral information detection sensor, and senses, for example, an in-vehicle camera (not shown) and a biological signal (respiration rate, heart rate, etc.) of the occupant P. A state detection sensor (not shown) or the like may be used. That is, the state of the occupant P to be driven may be detected by an in-vehicle camera or a state detection sensor, and each air bag 30 may be inflated and each vibration member 24 may be vibrated based on the detection result.

  More specifically, for example, when it is detected by the in-vehicle camera or the state detection sensor that the occupant P who is driving has a tendency to fall asleep, each air bag 30 is inflated by the control of the control device, and from each vibration member 24. May be transmitted (applied) to the passenger P effectively. According to this, the wake-up effect can be quickly given to the occupant P who tends to fall asleep (being attacked by a sleeper), and the occupant P can be effectively prevented from falling asleep.

  Further, in an autonomous driving vehicle, when the necessity of switching from the automatic driving mode to the manual driving mode (including the driving support mode) occurs, the awakening effect is given to the occupant P who is scheduled to go to sleep in the automatic driving mode. Also when giving, the vehicle seat 10 which concerns on this embodiment becomes effective.

  That is, in the automatic driving mode, when the in-vehicle camera or the state detection sensor detects that the occupant P scheduled to drive is falling asleep, for example, when arriving at the destination, there is a need to switch to the manual driving mode. When detected by a car navigation system (not shown) or the like, the control device controls to inflate each air bag 30 and vibrate each vibration member 24, so that the occupant P who is going to sleep is expected to sleep. Awakening effect can be given.

  The “automatic driving mode” refers to a controller (not shown) provided in the automatic driving vehicle based on the peripheral information detected by the peripheral information detection sensor provided in the automatic driving vehicle. Is a mode for driving. The “manual operation mode” is a mode in which the occupant P operates the automatic driving vehicle by operating the steering wheel (not shown) or the like.

  The vehicle seat 10 according to the present embodiment has been described with reference to the drawings. However, the vehicle seat 10 according to the present embodiment is not limited to the illustrated one, and does not depart from the gist of the present invention. The design can be changed as appropriate. For example, the position where the air bag 30 is provided and the quantity of the air bags 30 are not limited to the position and quantity shown in FIG.

  In the present embodiment, the air supply / exhaust device is provided inside the seat body 12 (in the seat back 16 or in the seat cushion 14). However, the present invention is not limited to this. It is good also as a structure provided in the back surface of the seat back 16, the lower surface of the seat cushion 14, etc.).

  Further, in the present embodiment, the air bag 30 on the seat back 16 side and the air bag 30 on the seat cushion 14 side are individually inflated and contracted, but the present invention is not limited to this. The air bag 30 on the side and the air bag 30 on the seat cushion 14 side may be inflated and contracted simultaneously. Further, for example, the left and right air bags 30 on the seat back 16 side and the left and right air bags 30 on the seat cushion 14 side may be alternately expanded and contracted.

  Alternatively, the air bag 30 on the seat back 16 side and the air bag 30 on the seat cushion 14 side may be inflated in a predetermined order to transmit vibration. According to such a configuration, the occupant P can predict in advance through which air bag 30 the vibration is applied, so that the occupant P who tends to fall asleep is particularly uncomfortable. Without being able to effectively provide an awakening effect.

  Alternatively, vibration may be transmitted by inflating the air bag 30 on the seat back 16 side and the air bag 30 on the seat cushion 14 side at random. According to such a configuration, since the occupant P cannot predict in advance through which air bag 30 vibration is applied, vibration is applied through the air bag 30 at a position where the occupant P is determined. You can avoid getting used to it. Therefore, the awakening effect can be more effectively given to the occupant P who tends to fall asleep.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 12 Seat main body 14 Seat cushion 16 Seat back 20 Seat pad 24 Vibration member 30 Air bag P Crew

Claims (1)

A seat body including a seat cushion and a seat back, and a seat pad provided therein;
A vibration member disposed on a surface opposite to a surface that supports an occupant of the seat pad;
An air bag that is provided on the opposite side of the vibration member across the seat pad, expands when air is supplied, and contracts when air is discharged;
Vehicle seat equipped with