JP2015221604A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a vibrational state of a vibration member to be more clearly transmitted by a relatively simple structure.SOLUTION: A vibration member (10a) has a bag-like body part 12 that is expanded by supply of a fluid and contracted by discharge of the fluid, a supply part 14 capable of supplying the fluid to the body part 12, and a discharge part 16 capable of discharging the fluid from the body part 12. The body part 12, which is arranged on the inside of a seat with respect to a seat cover, transmits a vibrational state, which is brought about by repeating the operation of discharging the fluid from the discharge part (16) by making the body part pushed by an occupant in a sitting state after the body part is expanded by the fluid supplied from the supply part 14, to the occupant.

Description

  The present invention relates to a vehicle seat provided with a vibration member (a member capable of transmitting vibration to an occupant).

  In this type of vehicle seat, from the viewpoint of improving performance, information outside the vehicle (proximity of other vehicles and the human body, etc.) and information inside the vehicle (changes in the posture of the passenger due to falling asleep or fatigue, etc.) It is desirable to communicate to For example, in the vehicle seat disclosed in Patent Document 1, a plurality of vibration members are embedded on the seat back side of the seat back in a state where the vibration state can be sensed by the occupant. Each vibration member includes, for example, a conventionally known vibrator (vibrator that vibrates by a motor). Information on the inside and outside of the vehicle can be transmitted to the occupant by vibrating each vibration member with a signal from a sensor that senses information inside and outside the vehicle.

JP 2007-242390 A

  By the way, in the above-described seat configuration, it is desired that the vibration of the vibration member can be clearly transmitted to the occupant. For example, when the vibration frequency of the vibration member is large (about 100 Hz), it is felt that the vibration is diffused. Therefore, it is desirable to reduce the vibration frequency (for example, suppress it to 40 Hz or less). However, the known vibration member uses a slightly small vibrator (vibrator that vibrates by a motor) in consideration of the space in the seat, and therefore the vibration frequency tends to increase. Of course, it is possible to lower the frequency of vibration by assembling a cam or the like to the motor, but this will complicate or enlarge the structure of the vibration member. The present invention has been devised in view of the above points, and a problem to be solved by the present invention is to make it possible to more clearly transmit the vibration state of the vibration member with a relatively simple configuration. .

  As means for solving the above problems, the vehicle seat of the first invention is capable of transmitting a vibration state to the occupant, a seat pad that elastically supports the occupant, a seat cover that covers the seating side of the seat pad, and A vibration member. In the present invention, for example, information on the inside and outside of the vehicle is transmitted to the occupant by the vibration of the vibration member. With this type of configuration, the vibration state of the vibration member can be transmitted more clearly with a relatively simple configuration. desirable.

  Accordingly, in the present invention, the vibrating member expands when the fluid is supplied and contracts when the fluid is discharged, the supply portion that can supply the fluid to the main portion, and the discharge portion that can discharge the fluid from the main portion. And have. The main body is arranged on the inner side of the seat with respect to the seat cover, and after expanding with the fluid supplied from the supply unit, the operation of discharging the fluid from the discharge unit by pressing from the seated passenger is repeated. It is the structure which transmits the vibration state which arises to a passenger | crew. In the present invention, by adjusting the inflow amount of the fluid (with a relatively simple configuration), the main body portion can be preferably vibrated (the vibration state can be clearly transmitted).

  The vehicle seat of the second invention is the vehicle seat of the first invention, and the vibration member has a storage part capable of storing the fluid supplied from the supply part. Therefore, in the present invention, the fluid supplied from the supply unit is stored in the storage unit, and then the vibration is started by supplying the fluid to the main body unit simultaneously or sequentially from the supply unit and the storage unit. In the present invention, even if the initial fluid supply amount of the supply unit is relatively small (even if a relatively small and simple supply unit is used), the main body is made up by supplementing it with the fluid of the storage unit. The part can be appropriately vibrated from the beginning.

  According to the first aspect of the present invention, the vibration state of the vibration member can be transmitted more clearly with a relatively simple configuration. According to the second invention, the vibration state of the vibration member can be transmitted more clearly with a simpler configuration.

It is a perspective view of a vehicle seat. It is a schematic sectional drawing of a part of seat cushion. It is a perspective view of a main-body part. It is sectional drawing of a main-body part. It is the schematic of a vibration member. 10 is a schematic view of a vibrating member according to Modification 1. FIG. 10 is a schematic view of a vibrating member according to Modification 2. FIG. It is a perspective view of the main-body part concerning the modification 3. It is sectional drawing of the main-body part concerning the modification 3.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In each figure, a reference symbol F is attached to the front of the vehicle seat, a reference symbol B to the rear of the vehicle seat, a reference symbol UP to the upper side of the vehicle seat, and a reference symbol DW to the lower side of the vehicle seat. The vehicle seat 2 in FIG. 1 includes a seat cushion 4, a seat back 6, and a headrest 8. These seat components include a seat frame (4F, 6F, 8F) forming a seat skeleton, a seat pad (4P, 6P, 8P) forming a seat outer shape, and a seat cover (4S, 6S, 8S) covering the seat pad. Have Here, the seat back 6 is connected to the rear portion of the seat cushion 4 so as to be able to rise and fall, and the headrest 8 is disposed on the upper portion of the seat back 6 (standing state).

  In the present embodiment, a plurality of vibration members 10a to 10f (details will be described later) are disposed at appropriate positions of the seat cushion 4 and the seat back 6 (see FIG. 1). For example, the pair of vibration members 10a and 10b are disposed at the rear portion (top plate main portion) of the seat cushion 4 and are disposed at positions where they can face the occupant's buttocks. Further, the plurality of vibration members 10c to 10f are disposed in the lower portion (top plate main portion) of the seat back 6 in the standing state, and are disposed at positions where they can face the occupant's waist.

  Each of the vibration members 10a to 10f is a member capable of transmitting a vibration state to the occupant, and can be vibrated (in conjunction with or independently) by a signal from a sensor (not shown) that senses information inside and outside the vehicle. Here, the sensor is disposed inside or outside the vehicle. For example, information outside the vehicle (such as proximity of other vehicles or the human body), information inside the vehicle (changes in the posture of the occupant due to falling asleep or fatigue, etc.) Can be detected. In this type of configuration, it is desirable to vibrate each of the vibration members 10a to 10f more appropriately with a relatively simple configuration. Therefore, in this embodiment, the vibration members 10a to 10f are more appropriately vibrated with a simple configuration described later. Hereinafter, each configuration will be described in detail. Here, in this embodiment, the vibrating members 10a to 10f have substantially the same basic configuration. Therefore, in this embodiment, the configuration of the vibration member 10a provided on the seat cushion 4 will be described as an example.

(Vibration member)
The vibration member 10a of the present embodiment includes a main body portion 12, a supply portion 14, a discharge portion 16, and a pipe material 20 (see FIGS. 2 to 5). The main body 12 is a substantially rectangular (upward view) planar member, and the central portion (inflatable portion 13) is formed into a bag shape (see FIGS. 3 and 4). The expansion part 13 of the present embodiment is a substantially circular (upward view) part, and can be expanded and contracted by the inflow and outflow of fluid (gas such as gas or air). In addition, the capacity | capacitance (magnitude | size of a vibration) of the expansion part 13 is not specifically limited as long as a vibration state can be transmitted to a passenger | crew. Moreover, the discharge part 16 is a site | part which can discharge | emit fluid from the main-body part 12, and is a hole part (through-hole connected inside and outside) provided in the expansion | swelling part 13 in a present Example (FIG.3 and FIG.5). reference).

  The supply unit 14 is a member capable of supplying a fluid to the main body unit 12 and includes various pump members such as a capacity type (rotary type, reciprocating type) and a turbo type (centrifugal type, axial flow type, diagonal flow type). Can be employed (see FIG. 5). And the pipe material 20 is a member (pipe shape) which can pass a fluid, and is arrange | positioned between the main-body part 12 and the supply part 14, and connects these (refer FIG. 5). In the present embodiment, the valve material 30 (solenoid valve) is provided in the middle of the pipe material 20, and the fluid supplied from the supply unit 14 can be damped in the middle.

  In the present embodiment, the main body 12 is disposed on the inner side of the seat with respect to the seat cover 4S (see FIG. 2). For example, the main body 12 can be disposed between the seat pad 4P and the seat cover 4S, or can be disposed on the back side of the seat pad 4P. And the main-body part 12 will be pressed by the passenger | crew at the time of a seating state through seat cover 4S (and seat pad 4P). Further, the supply unit 14 is fixed to the seat frame 4F and disposed in the seat (typically on the back side of the seat pad 4P). And while routing the pipe material 20 from the seat to the seat cover 4S side, one end side of the pipe material 20 is communicated with the supply unit 14, and the other end side of the pipe material 20 is inserted into the main body part 12 to expand the expansion part. 13 (bag shape) (see FIG. 5). In this way, in this embodiment, the fluid supplied from the supply unit 14 can flow into the main body 12 by communicating the supply unit 14 and the main body 12 via the pipe member 20.

(Operation of vibration member)
Referring to FIGS. 1 and 5, when a passenger is seated, a control unit (not shown) is activated by a signal from a sensor that senses information inside and outside the vehicle, the supply unit 14 is activated, and the valve member 30 is opened. It is said. Accordingly, at least one of the vibrating members 10a to 10f (main body portion 12) is appropriately expanded against the pressing of the occupant by supplying the fluid (in FIG. 5, the moving direction of the fluid is indicated by a hollow arrow). And by making the valve material 30 into a closed state, fluid is discharged | emitted from the discharge part 16 (hole) by the press from a passenger | crew, and the main-body part 12 is contracted. Thus, after the main body 12 is expanded with the fluid supplied from the supply unit 14, the operation of discharging the fluid from the discharge unit 16 by pressing from the occupant can be repeated (vibrated). In this embodiment, the frequency of vibration of the main body 12 (the number of peaks at the time of expansion and the number of valleys at the time of contraction) can be appropriately set (for example, set to 40 Hz or less) by adjusting the amount of fluid flowing in. In this way, in the present embodiment, the vibration state generated by repeated expansion and contraction can be clearly transmitted to the occupant without extremely increasing the size of the main body 12.

  As described above, according to the present embodiment, the main body 12 can be suitably vibrated by adjusting the inflow amount of the fluid (by a relatively simple configuration). For this reason, according to the present embodiment, the vibration state of each of the vibration members 10a to 10f can be transmitted more clearly with a relatively simple configuration.

[Modification 1]
Here, the configuration of the vibration member may take various configurations in addition to the above-described configuration. For example, the vibration member 11A of Modification 1 includes a main body portion 12 (same configuration as that of the embodiment), a discharge portion 16 (same configuration as that of the embodiment), a supply portion 14a (details will be described later), a storage portion 18, and a pipe material 20a. (See FIG. 6). The storage unit 18 is a member capable of storing the fluid supplied from the supply unit 14a, and is fixed to the seat frame 4F and disposed in the seat (typically on the back side of the seat pad 4P). And the pipe material 20a is divided into two forks on the way, and has a first pipe part 21 and a second pipe part 22. The 1st pipe part 21 is a pipe part which connects the supply part 14a and the main-body part 12, and the 1st valve material 31 (electromagnetic valve) is provided in the middle. Moreover, the 2nd pipe part 22 is a pipe part connected in the middle (between the 1st valve material 31 and the supply part 14a) of the 1st pipe part 21, and the 2nd valve material 32 (solenoid valve) is in the middle. Provided. In this embodiment, the reservoir 18 and the first pipe 21 are communicated with each other via the second valve member 32 by the second pipe 22.

  And in this modification, the small supply part 14a can be used in consideration of the space in a sheet | seat. A pump member (for example, a diaphragm reciprocating pump member) having a maximum air volume of 10 to 30 L / min and a maximum discharge pressure of 0.05 MPa to 0.2 MPa can be used as the small supply unit 14a. And in the small supply part 14a, it is known that the air volume at the initial stage of driving is lower than that in the steady operation.

  Therefore, in this modification, after the fluid supplied from the supply unit 14a is stored in the storage unit 18, the fluid is supplied to the main body unit 12 from both the supply unit 14a and the storage unit 18 (simultaneously) to start vibration. The configuration. That is, prior to the expansion of the main body 12, the fluid in the supply unit 14 a is supplied to the storage unit 18 while the first valve member 31 is closed by the sensor (control unit) and the second valve member 32 is opened. And after storing the fluid in the storage part 18, the 2nd valve material 32 is made into a closed state. And while operating the supply part 14a and making both valve members 31 and 32 into an open state with a sensor (control part), fluid is supplied to the main-body part 12 from both the supply part 14a and the storage part 18. Start vibration. For this reason, in this modification, even if the initial fluid supply amount of the supply unit 14a is relatively small, the supply unit 14a is preferably vibrated from the beginning by supplementing it with the fluid of the storage unit 18. Can do.

[Modification 2]
In addition to the above-described configuration, the configuration of the vibration member (discharge unit) can take various configurations. For example, the vibration member 11B of Modification 2 includes a main body portion 12a, a supply portion 14 (the same configuration as that of the embodiment), and a tube material 20b (discharge portion 16a) (see FIG. 7). The main body 12a has substantially the same configuration as the main body 12a of the first embodiment, but no hole is formed in the inflatable portion 13a. And the pipe material 20b is divided into the forked part in the middle, and has the main body pipe part 24 and the discharge part 16a. The main body pipe portion 24 is a pipe portion that allows the supply portion 14 and the main body portion 12a to communicate with each other, and the first valve material 31 is provided in the middle thereof. The discharge part 16a is a pipe part communicating with the middle of the main body pipe part 24 (between the first valve material 31 and the main body part 12a), and a third valve material 33 (electromagnetic valve) is provided in the middle. Communicate to the outside.

  And in this modification, vibration member 11B (main-body part 12a) expands against a passenger | crew's press by supply of a fluid. Then, the first valve member 31 is closed by the sensor (control unit) and the third valve member 33 is opened, so that the fluid is discharged from the discharge portion 16a by the pressure from the occupant and the main body portion 12a is removed. Can be shrunk. In the present modification, the supply unit 14 and the discharge unit 16a are communicated (circulation configuration), so that a liquid can be used as the fluid.

[Modification 3]
In addition to the above-described configuration, the configuration of the vibrating member (expanding portion) can take various configurations. For example, in the vibration member 11 </ b> C of the third modification, the expansion portion 13 b of the main body portion 12 b includes a first expansion portion 41 (substantially the same configuration as the expansion portion of the first embodiment) and a second expansion portion 42 (the expansion portion of the first embodiment). (Refer to FIG. 8 and FIG. 9). In the present modification, the second inflating portion 42 is disposed so as to overlap the seating side of the first inflating portion 41, and communicates with each other at the contact points (the fluid can flow in and out). Then, the vibration member 11C (inflatable portion 13b) expands against the occupant's pressing by supplying the fluid. At this time, in the present modification, the vibration state of the vibration member 11C is clearly transmitted to the occupant by the second inflating portion 42 being inflated toward the seating side together with the first inflating portion 41 (projecting greatly during inflation). Can do. In this modified example, three or more inflating portions can be stacked.

  The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments. For example, in the present embodiment, the configuration of the vibration members 10a to 10f (shape, dimensions, number of arrangements, arrangement position, vibration frequency, etc.) is exemplified, but the configuration of the members is not intended to be limited. For example, a plurality of or a single vibration member can be disposed in at least one of the seat cushion, the seat back, and the headrest. Further, the shape and dimensions of the vibration member can be appropriately changed, and can be provided inside the seat pad as long as vibration can be transmitted to the occupant. The frequency of vibration can be appropriately changed according to the seat configuration.

  Moreover, in this embodiment, although the structure of the main-body part 12, the supply part 14, the discharge part 16, the storage part 18, and the pipe material 20 was illustrated, the structure (a shape, a dimension, an arrangement position, the number of arrangements, etc.) of these each part is shown. It is not intended to be limited. For example, each vibration member can be connected to a single supply unit or the like with the same pipe material, and a configuration in which a supply unit or the like is provided for each vibration member can also be employed. Moreover, a hollow housing | casing and a bag-shaped member can be used for a storage part. And when employ | adopting a bag-shaped storage part, a several bag site | part (storage site | part) can be divided and provided. By doing so, it is possible to suitably prevent each storage site during expansion from excessively projecting in the thickness direction of the storage part (becomes a configuration that does not require excessive storage space in the seat). Further, the main body can be vibrated by intermittently opening and closing the valve material (intermittently putting fluid in and out of the main body).

  Further, in the present embodiment (Modification 1), an example has been described in which fluid is supplied to the main body from both the supply unit and the storage unit (simultaneously) to start expansion. In contrast, it is also possible to start the expansion by supplying fluid to the main body part sequentially from the supply part and the storage part. For example, the fluid can be supplied from the supply part to the main body part, and then the fluid can be supplied from the supply part (or the fluid can be supplied in the reverse procedure by adding a valve material or the like).

  The configuration of the present embodiment can be applied to all vehicle seats such as vehicles, airplanes, and trains. The configuration of the vehicle seat can be changed as appropriate. And the structure of an Example and the structure of a modification can be used in combination as appropriate.

DESCRIPTION OF SYMBOLS 2 Vehicle seat 4 Seat cushion 6 Seat back 8 Headrest 4F Seat frame 4P Seat pad 4S Seat cover 10a-10f Vibration member 12 Main body part 13 Expansion part 14 Supply part 16 Discharge part 18 Storage part 20 Pipe material 30 Valve material

Claims (2)

In a vehicle seat comprising: a seat pad that elastically supports an occupant; a seat cover that covers a seating side of the seat pad; and a vibration member capable of transmitting a vibration state to the occupant.
The vibrating member expands by supply of fluid and shrinks by discharge of the fluid, a supply unit capable of supplying fluid to the main body, and a discharge unit capable of discharging fluid from the main body. Have
The main body portion is disposed on the inner side of the seat with respect to the seat cover, and after being expanded by the fluid supplied from the supply portion, the fluid is discharged from the discharge portion by pressing from the seated occupant. The vehicle seat is configured to transmit a vibration state generated by repeating the operation to the occupant. The vibration member has a storage part capable of storing the fluid supplied from the supply part,
The configuration is such that after the fluid supplied from the supply unit is stored in the storage unit, the fluid is supplied to the main body unit simultaneously or sequentially from the supply unit and the storage unit to start vibration. Vehicle seat described in 1.

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