JP2016222107A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which controls blowing from a blowing port with preferable performance in accordance with a physical relationship of an occupant and the blowing port.SOLUTION: A vehicle seat is provided with a measurement member 40 capable of measuring a distance between a part of (CM1) of an occupant and a blowing port 10a in a seating state of the occupant CM, stops at least one member of a temperature control member 20 and a blowing member 30 when detecting transition from a first state ST1 (such a state that the blowing port is separated from a part of the occupant) to a second state ST2 (such a state that the blowing port comes close to a part of the occupant) with the measurement member 40 and, on the other hand, actuates at least one member in the stopping state when detecting the transition from the second state ST2 to the first state ST1.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle seat including a blower member, a temperature adjustment member, and a blower opening (opening at a position where it can face a part of an occupant and allowing gas to pass through).

  In this type of vehicle seat, in consideration of passenger comfort and the like, an air blowing member is disposed in the seat and air is often blown toward the passenger from an air outlet opening on the seating side. In the field of vehicle seats, from the viewpoint of further improving comfort, for example, after raising the gas temperature of the blower member with a heater member (corresponding to a temperature control member), warm air is blown out of the seat from the blower opening. May be sent out. At this time, it is common to set the temperature of the gas to be sent and the air volume, assuming that the gas hits an occupant moderately away from the air outlet.

  Here, as this kind of configuration, a seat constituent member (seat, backrest, armrest, etc.), a blower member, a blower opening, and an office chair provided with detection means are known (see Patent Document 1). A ventilation opening is an opening which sends gas toward the user (equivalent to a passenger | crew) outside a seat, for example, is formed in an armrest. The detection means is a non-contact type sensor and can detect whether the user is seated. And in a well-known technique, after detecting that a user is in a seating state with a detection means, a ventilation member is operated and air of a fixed air volume is sent toward a user from a ventilation opening. Moreover, it detects with a detection means that a user is in a non-seating state, stops a ventilation member, and stops the ventilation from an air outlet.

JP 2012-196335 A

  By the way, in the field of vehicle seats, the position of the occupant may change when the vehicle is traveling, and the air outlet and the occupant may approach or separate from each other. However, in the known technology, a constant amount of gas is always sent out from the air outlet when the user is seated on the office chair. For this reason, when the configuration of the known technology is applied to the vehicle seat, even if the occupant is extremely close to the air blowing port, a certain amount of warm air is sent out in the same manner as in a properly spaced state, causing uncomfortable feeling. There was a fear (they tended to be a less comfortable configuration). The present invention was devised in view of the above points, and a problem to be solved by the present invention is to adjust the blowing from the blowing port with good performance according to the positional relationship between the blowing port and the occupant. .

  As means for solving the above problems, the vehicle seat according to the first aspect of the present invention is such that the air blowing member capable of sending out gas, the temperature adjusting member capable of adjusting the ambient temperature, and the position where it can face a part of the occupant. And an air blowing port through which gas can pass. In the present invention, the gas whose temperature is adjusted by the temperature adjusting member is sent out of the sheet from the air blowing port by the air blowing member. At this time, in the vehicle seat, a transition is made between a first state in which a part of the occupant is separated from the air outlet and a second state in which a part of the occupant is closer to the air outlet than in the first state. And the temperature and the air volume of the gas sent out from the air outlet are set based on the first state, but in this type of seat configuration, depending on the positional relationship between the occupant (part) and the air outlet, It is desirable to adjust the ventilation of the air with good performance.

  Therefore, in the present invention, the vehicle seat is provided with a measuring member capable of measuring the distance between a part of the occupant and the air outlet in the seated state of the occupant. Then, the measurement member detects the transition from the first state to the second state, stops at least one member of the temperature adjustment member and the air blowing member, and detects the transition from the second state to the first state. Thus, at least one member in a stopped state is operated. In this invention, according to the distance of a part of passenger | crew measured with the measurement member and the ventilation opening, the ventilation from a ventilation opening can be adjusted with sufficient performance (the intensity | strength of an air volume is made or temperature is raised / lowered). .

  According to the 1st invention concerning the present invention, according to the position relation between a crew member and an air outlet, the air blow from an air outlet can be adjusted with sufficient performance.

It is a front view of a vehicle seat. It is a schematic side view of a vehicle seat. It is sectional drawing of a part of seat cushion. It is a control figure of a ventilation member.

  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. Each of these seat constituent members includes 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). In the present embodiment, 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 a headrest 8 is disposed on the upper portion of the seat back 6 (in a standing state) (see FIG. 2).

[Seat cushion]
The seat cushion 4 has the above-described basic configuration (4F, 4P, 4S), the air blowing ports 10a, 10b, and related configurations (the duct member 12, the temperature adjusting member 20, the air blowing member 30, and the measurement member 40) (FIG. 2). And FIG. 3). In this embodiment, when the occupant CM is seated on the vehicle seat 2, the occupant calf CM1 (a part of the occupant) is disposed in a face-to-face manner on the front side (the air blowing ports 10a and 10b) of the seat cushion 4. Then, as will be described later, the gas (typically air) emitted from the air blowing member 30 is heated (or lowered) by the temperature adjusting member 20, and sent out of the seat from the front side of the seat cushion 4 (air blowing ports 10a and 10b). It is.

  At this time, in this embodiment, it is assumed that the occupant CM takes a natural sitting posture and the occupant calf CM1 is appropriately separated from the air blowing ports 10a and 10b (first state ST1) (see FIGS. 2 and 3). . A comfortable environment for the occupant CM is established by setting the temperature and air volume (air blowing conditions) of the gas sent from the air outlets 10a and 10b with the first state ST1 as a reference. Here, the distance between the air outlets 10a, 10b and the occupant calf CM1 in the first state ST1 can typically be set as appropriate according to the physique of the occupant CM (details will be described later). For example, in this embodiment, an occupant having an intermediate physique between an occupant model corresponding to AM95 in the SAE standard and an occupant model corresponding to JF05 is assumed as an occupant CM having a general physique.

  In the vehicle seat 2 of the present embodiment, the occupant calf CM1 comes closer to the air vents 10a, 10b than the first state ST1 (changes to the second state ST2) due to the posture change of the occupant CM. (See FIG. 3). For example, in the present embodiment, the distance between the air outlets 10a, 10b and the occupant calf CM1 in the second state ST2 can be set to less than half that in the first state ST1 (details will be described later). At this time, in consideration of the comfort of the occupant CM and the like, it is desirable that the air blown from the air blowing ports 10a and 10b (the temperature and the air volume of the gas sent out) can be appropriately adjusted in the first state ST1 and the second state ST2. Therefore, in this embodiment, with the configuration described later, the air blowing from the air blowing ports 10a and 10b is adjusted with good performance according to the positional relationship between the occupant CM and the air blowing ports 10a and 10b. Hereinafter, each configuration will be described in detail.

[Basic configuration]
The seat cushion 4 of the present embodiment is formed by covering the seat pad 4P with the seat cover 4S while being disposed on the seat frame 4F (see FIGS. 1 and 3). Here, the seat frame 4F is a substantially rectangular frame, and can be formed of a material (metal, hard resin, etc.) excellent in rigidity. The seat cover 4S is a bag-shaped face material, and can be formed of fabric (woven fabric, knitted fabric, non-woven fabric) or leather (natural leather, synthetic leather). The seat pad 4P is a member that can elastically support the occupant CM, and has a configuration (a pair of air outlets 10a and 10b and a duct member 12) described later. The material of the seat pad 4P is not particularly limited, but can be formed of a foamed resin such as polyurethane foam (density: 10 kg / m ^{3 to} 60 kg / m ³ ).

[Blower]
The pair of air outlets 10a and 10b are openings through which gas can pass, and are arranged so as to be able to face the occupant calf CM1 (part of the occupant) with reference to the seating state (see FIGS. 1 to 3). . In the present embodiment, a pair of air outlets 10a and 10b (substantially rectangular shape in front view) are arranged at positions where they can face the occupant calf CM1 while being juxtaposed in the seat width direction on the front surface of the seat cushion 4 (FIG. 1). See). In addition, each ventilation port 10a, 10b can be coat | covered with the surface material (fabric, leather, mesh material, etc.) provided with air permeability in consideration of the appearance of a sheet | seat.

  Further, the duct member 12 is a tube member (substantially rectangular parallelepiped shape) that is open at both ends, and is long in the front-rear direction of the seat (see FIGS. 2 and 3). In the present embodiment, the front side of the duct member 12 is disposed so as to be embedded in the seat pad 4P, and is divided into two in the middle and communicates with the air blowing ports 10a and 10b, respectively. Further, the rear side of the duct member 12 is exposed to the back side in the middle of the seat pad 4P. The rear end of the duct member 12 communicates with the blower member 30 (described later), whereby the blower ports 10a and 10b and the blower member 30 can be communicated with each other via the duct member 12.

[Temperature control member]
The temperature adjustment member 20 is a member capable of adjusting the ambient temperature, and can be provided in the middle of the movement path of the gas sent out by the air blowing member 30 (described later) (see FIG. 3). Examples of this type of temperature control member 20 include a heater member that raises the ambient temperature (for example, a heating wire heater such as a PTC heater) and a cooler member that lowers the ambient temperature. In the present embodiment, the heater member as the temperature adjustment member 20 is fixed in the duct member 12 and disposed in the middle of the gas movement path (front side of the air blowing member 30 described later). By doing so, the gas sent out by the air blowing member 30 goes to the air blowing ports 10 a and 10 b while being heated by the temperature adjusting member 20. The temperature control member 20 has a configuration (shape) that does not extremely impede the flow of gas. For example, the temperature control member 20 has a member having a diameter larger than that of the duct member 12 and an opening through which gas can pass. It is a member. And the temperature control member 20 may have a structure integrated with a blower member 30 described later, or may be a separate structure from the blower member 30.

[Blowing member]
The blower member 30 is a hollow box (substantially cubic) and incorporates a blower mechanism (fan) (see FIG. 3). Examples of the blower mechanism include an axial flow mechanism (a mechanism that sucks and blows air along the apparatus axial direction) and a centrifugal mechanism (a mechanism that blows air in the centrifugal direction while sucking air from the apparatus axial direction). In this embodiment, the air blowing member 30 (axial flow type) is fixed to the seat frame 4F or the like while being arranged on the back surface side of the seat pad 4P. And as above-mentioned, by connecting the ventilation member 30 to the rear end of the duct member 12, the gas sent out from the ventilation member 30 can be sent to the ventilation ports 10a and 10b via the duct member 12.

[Control method of blower member]
Here, the control method of the blowing member 30 (blowing mechanism) is not particularly limited, but it is desirable to perform PWM control (ON-OFF control) from the viewpoint of optimizing the blowing conditions (temperature and air volume) in the first state ST1. (See FIGS. 3 and 4). For example, in the present embodiment, the air blowing member 30 (the air blowing mechanism in the operating state) is set to an appropriate duty ratio (duty ratio (D) = τ / T (where τ is the pulse width) while considering the temperature in the vehicle compartment. And T indicates the cycle))). At this time, it is preferable to set the duty ratio of the air blowing member 30 in the range of 20% to 90% (preferably 30% to 85%) in consideration of the set temperature of the temperature adjustment member 20. By appropriately setting the duty ratio (adjusting the air volume) in this way, the temperature of the gas hitting the occupant calf CM1 in the first state ST1 can be optimized.

For example, it is assumed that the air temperature in the vehicle interior is 10 ° C. and the temperature setting member 20 is set to 100 ° C. At this time, in the present embodiment, the duty ratio of the blowing member 30 (set to an air volume of 20 to 30 m ³ / min) is set to a range of 30% to 85%. By carrying out like this, the gas temperature of the position about 150 mm away from the ventilation openings 10a and 10b (position of passenger | crew calf CM1 at the time of 1st state ST1) can be stored in the range of 50 to 60 degreeC. Further, when the room temperature is 23 ° C., the gas temperature at a position about 150 mm to 100 mm away from the air blowing ports 10a and 10b is set in the range of 50 ° C. to 60 ° C. by setting the duty ratio of the air blowing member 30 to 85%. be able to. Under the above conditions, the gas temperature at a position about 50 mm away from the air vents 10a, 10b (the position of the occupant calf CM1 in the second state ST2) is 80 ° C. or higher, and about 100 ° C. at the position closest to the air vents 10a, 10b. It becomes.

[Measuring member]
The measurement member 40 is a member that can measure the distance between the air outlets 10a and 10b and the occupant calf CM1 (a part of the occupant facing the air outlet in the seated state) (see FIG. 3). As this type of measurement member 40 (mechanism), a non-contact type distance sensor (an ultrasonic type, a laser type, an eddy current type, a thermal type such as a radiation thermometer) can be exemplified. In the present embodiment, the measuring member 40 is disposed in the middle of the duct member 12 (portions near the air outlets 10a and 10b), and the occupant calf CM1 (part of the occupant) is disposed so as to be detectable. The distance between the air vents 10a, 10b and the occupant calf CM1 occupant (sitting state) can be measured by the measuring member 40, and this distance information can be sent to a control device (typically ECU) (not shown).

[Blower control]
With reference to FIG. 1 and FIG. 3, in a state where the occupant CM is seated, the air is blown from the air blowing ports 10 a and 10 b toward the occupant calf CM <b> 1 (each member is in an operating state). At this time, in this embodiment, the measurement member 40 detects the distance between the air blowing ports 10a and 10b and the occupant calf CM1, and these are in the first state ST1 (in this embodiment, the distance between the two is about 150 mm). Is detected by the control device (see the two-dot broken line state in FIG. 3). In the first state ST1, both the temperature adjusting member 20 and the air blowing member 30 are operated via the control device, and hot air is sent from the air blowing ports 10a and 10b toward the passenger calf CM1. At this time, in the present embodiment, the temperature of the gas hitting the occupant calf CM1 can be kept within an appropriate range (for example, a range of 50 ° C. to 60 ° C.) by performing PWM control on the air blowing member 30 to optimize the air blowing conditions.

  In this type of configuration, the occupant calf CM1 may be close to the air blowing ports 10a and 10b (at least one) due to a change in the posture of the occupant CM. For example, in the present embodiment, it is assumed that the distance between the air blowing ports 10a and 10b and the occupant calf CM1 is 50 mm or less (the second state ST2 is set) (see the broken line state in FIG. 3). At this time, considering the comfort of the occupant CM and the like, it is desirable that the temperature and air volume (air blowing conditions) of the gas sent from the air blowing ports 10a and 10b can be appropriately adjusted in the first state ST1 and the second state ST2. Therefore, in this embodiment, the measurement member 40 detects the distance between the air blowing ports 10a, 10b and the occupant calf CM1 and is in the process of changing from the first state ST1 to the second state ST2 (for example, the distance between the two is 75 mm). The control device detects that the following has occurred. Therefore, by stopping the blower member 30 via the control device and rapidly reducing the amount of blown gas, a high-temperature gas (for example, a gas of 80 ° C. or higher) is applied to the passenger calf CM1 in the second state ST2. It can avoid suitably. In this embodiment, the temperature around the occupant calf CM1 can be set to an appropriate temperature (for example, about 40 ° C.) in the second state ST2 by rapidly reducing the amount of gas blown under the above-described conditions. In this embodiment, the operating state of the temperature control member 20 can be maintained, but the same member can be stopped simultaneously or the set temperature can be lowered.

  In this embodiment, the measuring member 40 detects that the measuring member 40 is in the process of changing from the second state ST2 to the first state ST1 (for example, the distance between the two exceeds 75 mm), and the blowing member 30 in the stopped state. And so on. Thus, in this embodiment, when the state returns to the first state ST1, both the temperature adjustment member 20 and the air blowing member 30 are activated, and hot air can be appropriately sent out from the air blowing ports 10a and 10b.

  As described above, in the present embodiment, the air blowing from the air blowing ports 10a and 10b can be adjusted with good performance according to the distance between the air blowing ports 10a and 10b measured by the measuring member 40 and the passenger calf CM1. Further, in this embodiment, by performing PWM control of the air blowing member 30, the air blowing conditions (temperature and air volume) in the first state ST1 can be suitably optimized. For this reason, according to the present Example, according to the positional relationship of passenger | crew CM and the ventilation openings 10a and 10b, the ventilation from the ventilation openings 10a and 10b can be adjusted with sufficient performance.

[Modification]
Moreover, the formation position of a ventilation port can be set to various positions other than the above-mentioned seat cushion front part. For example, in the first modification, a pair of air vents 10c and 10d are provided on the upper part of the seat back 6 (both sides viewed in the seat width direction), and are arranged facing each other on both shoulders of the occupant CM (FIGS. See). At this time, also in this modified example, the gas sent out from the air blowing member (not shown) is sent out of the seat from the air blowing ports 10c and 10d through the duct member 12a while being heated by the temperature adjusting member (not shown). It is. Therefore, also in the present modification, the air blowing from the air blowing ports 10c and 10d can be adjusted with high performance according to the distance between the passenger shoulder (a part of the passenger) measured by the measuring member and the air blowing ports 10c and 10d.

  The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments. In the present embodiment, the configurations (shape, dimensions, number of arrangements, arrangement positions, etc.) of the temperature control member 20, the air blowing member 30, and the measurement member 40 are exemplified, but the configuration of each of these members depends on the sheet configuration. It can be changed as appropriate. For example, the temperature control member, the air blowing member, and the measurement member can be provided at appropriate positions of the duct member. At this time, a temperature control member can also be arrange | positioned to the sheet | seat rear side of a ventilation member. In this case, the gas whose temperature is adjusted by the temperature adjusting member can be sent out to the front side of the sheet while being sucked by the blowing member. The air blowing member and the temperature adjustment member can be PWM controlled.

  In the present embodiment, the example in which the air blowing member 30 is stopped exclusively at the time of state transition has been described. In the configuration of the present embodiment, at least one member of the temperature adjustment member and the air blowing member can be stopped during the state transition. For example, by operating or stopping the temperature adjustment member in accordance with the state change, the temperature of the gas sent out from the air blowing port (air blowing condition) can be adjusted appropriately. And at least the other member of the temperature control member and the air blowing member can be set to stop or weaken the output (decrease the air volume or temperature) in accordance with the stop of one member. In addition, the timing which stops at least one member of a temperature control member and a ventilation member can be set to the suitable timing in the middle of a state transition according to the setting (air volume setting, temperature setting, etc.) of each member. In addition, the distance between a part of the occupant and the air outlet in the second state can be set as appropriate based on the conditions in the first state (the distance between the part of the occupant and the air outlet and the air blowing conditions).

  Further, in the present embodiment, the configuration (shape, dimensions, number of formation, formation position, etc.) of the air outlets 10a to 10d is illustrated, but the configuration of the same part can be appropriately changed according to the sheet configuration. That is, a plurality or a single number of air outlets can be formed at appropriate positions (upper surface and peripheral surface) of the seat cushion, and a plurality or a single number can be formed at appropriate positions (front surface and peripheral surface) of the seat back.

  In the present embodiment, the seat cushion and the seat back have been described as an example. However, the configuration of the present embodiment can be applied to various seat components such as a headrest, an armrest, and a footrest. And the setting distance of a 1st state and a 2nd state can also be set suitably according to a sheet | seat structural member. The configuration of the present embodiment is applicable to all vehicle seats such as vehicles, airplanes, and trains.

2 Vehicle Seat 4 Seat Cushion 6 Seat Back 8 Headrest 4S Seat Cover 4P Seat Pad 4F Seat Frame 10a, 10b Blower Port 12 Duct Member 20 Temperature Control Member 30 Blower Member 40 Measuring Member CM Crew CM1 Crew Crew (Part of Crew)
ST1 First state ST2 Second state

Claims (1)

A blowing member capable of sending gas, a temperature adjusting member capable of adjusting the ambient temperature, and a blowing port through which the gas can pass by opening at a position where it can face a part of an occupant,
When the gas whose temperature is adjusted by the temperature control member is sent out of the seat from the air blowing port by the air blowing member, a part of the occupant and the air blowing port are separated from each other, and the first state The vehicle is configured to change between the second state in which a part of the occupant is closer to the air outlet and to set the temperature and air volume of the gas sent from the air outlet on the basis of the first state. In the sheet for
The vehicle seat is provided with a measurement member capable of measuring a distance between a part of the occupant and the air outlet in the seated state of the occupant,
In the measurement member, the transition from the first state to the second state is detected and at least one member of the temperature adjustment member and the air blowing member is stopped, and the second state is changed to the first state. A vehicle seat that is configured to actuate the at least one member in a stopped state upon detection of a transition to the position.

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