JP2016185760A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular seat capable of promptly raising seating surface temperature, and adjusting each position on a seating surface to be suitable temperature, even if only one temperature sensor is provided.SOLUTION: A vehicular seat (a vehicular seat S) is equipped with a first heater 10; a second heater 20; a temperature sensor 30 provided at a part corresponding to the first heater 10; and a control device 100 which controls the output of the first heater 10 and the second heater 20 on the basis of detection temperature obtained from the temperature sensor 30. The control device 100 decides the output of the second heater 20 on the basis of the amount of integrated power obtained by integrating the amount of power outputted to the first heater 10, during a heating period in which the detection temperature is raised to target temperature when an instruction of heating of the vehicular seat S is received.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle seat including a heater capable of heating a seating surface.

  In a seat provided with a heater capable of heating the seating surface, a reference heater is based on the detection result of the temperature sensor so that a plurality of heaters provided on the seat can be appropriately heated by one temperature sensor. There is known a seat heater that sets the energization amount (reference energization amount) and controls the energization by calculation based on the reference energization amount for the other heaters.

JP 2013-1360 A

  By the way, the seat heater described in Patent Document 1 has a problem that although it can approach a temperature close to the target temperature, the temperature of the seat surface does not rise easily at a low temperature, which is not comfortable. In particular, in a vehicle seat in which a heater is energized by a battery, there is a problem in that it is difficult to quickly raise the temperature of the seat because an upper limit may be set for the power that can be used in the entire seat.

  The present invention has been made in view of the background as described above. Even if there is only one temperature sensor, the seat surface temperature can be quickly raised and each position of the seat surface can be adjusted to an appropriate temperature. An object is to provide a vehicle seat.

  The vehicle seat of the present invention that solves the above-described problems is based on the first heater, the second heater, a temperature sensor provided in a portion corresponding to the first heater, and a detected temperature acquired from the temperature sensor. And a control device for controlling outputs of the first heater and the second heater. Then, the control device performs the first operation based on the integrated electric energy obtained by integrating the electric energy output to the first heater in the heating period in which the detected temperature is increased toward the target temperature when receiving an instruction to heat the vehicle seat. The output of two heaters is determined.

  According to such a configuration, in the heating period when the instruction to heat the sheet is received, the output balance between the first heater and the second heater is made different from that during the temperature maintenance after the detected temperature reaches the target temperature. Even so, by determining the output of the second heater based on the integrated electric energy output to the first heater, the temperature of the part corresponding to the first heater and the temperature of the part corresponding to the second heater can be appropriately controlled. Can be adjusted. For this reason, the seat surface temperature can be quickly felt as an appropriate temperature by, for example, quickly heating a part where the temperature is easily felt, and the temperature balance between the part corresponding to the first heater and the part corresponding to the second heater. Can also be adjusted to make a comfortable seat.

  In the vehicle seat described above, the control device supplies power only to the first heater if the detected temperature does not reach the first temperature lower than the target temperature during the heating period.

  According to such a configuration, by arranging the first heater at a part where the temperature is particularly sensitive, even if there is a limit to the total output to the heater, the part corresponding to the first heater can be quickly provided. Can be heated.

  In the vehicle seat described above, the control device can start supplying power to the second heater when the detected temperature reaches the first temperature during the heating period.

  In the vehicle seat described above, the control device supplies power to both the first heater and the second heater when the detected temperature reaches the first temperature lower than the target temperature during the heating period. Can do.

  In the above vehicle seat, when the detected temperature reaches the first temperature during the heating period, the control device causes the second heater of the second heater to exceed the first output ratio that is the ratio of the output to the maximum output of the first heater. Electric power can be supplied to the first heater and the second heater so that the second output ratio, which is the ratio of the output to the maximum output, is larger.

  With this configuration, after the detected temperature detected by the temperature sensor at the portion corresponding to the first heater reaches the first temperature, the second output ratio of the second heater is increased, and the second heater is The temperature of the corresponding part can be brought close to the temperature of the part corresponding to the first heater.

  In the vehicle seat described above, the first output ratio can be 50% or less, and the second output ratio can be 100%.

  In the vehicle seat described above, the control device calculates a required control amount based on the target temperature and the detected temperature when the detected temperature reaches the first temperature during the heating period, and the required control amount is a predetermined upper limit. When the value is equal to or smaller than the value, the first heater is controlled with the necessary control amount. When the necessary control amount is larger than the predetermined upper limit value, the first heater can be controlled with the upper limit value as the control amount.

  According to such a structure, it can suppress that the site | part corresponding to a 1st heater is heated more quickly than needed, and the balance with the temperature of the part corresponding to a 2nd heater is lost.

  In the vehicle seat described above, the control device integrates the amount of power output to the first heater every predetermined time until the detected temperature reaches the first temperature lower than the target temperature during the heating period. It can be set as the structure which calculates quantity.

  In the vehicle seat described above, the control device starts supplying power to the second heater when the detected temperature reaches the first temperature during the heating period, and then supplies power to the second heater every predetermined time. The amount can be subtracted from the integrated power amount.

  In the above-described configuration, when the detected temperature reaches the first temperature during the heating period, the control device supplies power to both the first heater and the second heater and outputs the power to the first heater every predetermined time. The power amount can be added to the integrated power amount and the power amount output to the second heater can be subtracted from the integrated power amount.

  In the configuration described above, the control device adds a value obtained by multiplying the amount of power supplied to the first heater by the first coefficient to the integrated power amount, and sets a value obtained by multiplying the amount of power supplied to the second heater by the second coefficient. The second coefficient may be larger than the first coefficient by subtracting from the integrated power amount.

  According to such a configuration, since the second coefficient is larger than the first coefficient, it corresponds to the first heater according to the heat capacity of the part corresponding to the first heater and the part corresponding to the second heater. The temperature of the part and the part corresponding to the second heater can be balanced.

  In the configuration described above, the control device calculates a required control amount based on the target temperature and the detected temperature when the integrated power amount becomes a predetermined value or less, and controls the first heater with the required control amount. can do.

  According to such a structure, it can transfer to the control according to a required control amount according to the heating amount to the site | part corresponding to a 2nd heater.

  In the configuration described above, the control device has the same output ratio as the ratio of the output with respect to the maximum output of the first heater when the first heater is controlled with the required control amount when the integrated power amount becomes a predetermined value or less. It can be set as the structure which controls a 2nd heater.

  According to such a configuration, it is possible to shift to control according to the required control amount in accordance with the amount of heating to the part corresponding to the second heater, and simple control of the first heater and the second heater. However, the temperature of the part corresponding to the first heater and the temperature of the part corresponding to the second heater can be balanced.

  In the configuration described above, the first heater is provided on the seat surface portion of the seat, and the second heater is provided on the left and right outer sides of the seat surface portion, and is provided on the overhanging portion that protrudes toward the occupant side to support the occupant side portion. It can be set as the structure comprised.

  According to such a configuration, it becomes possible to preferentially heat the temperature of the seat surface part where the passenger can easily feel the temperature. In the present invention, the seat surface portion means the seat surface portion (the center portion of the seat that comes into contact with the back of the occupant or the back side of the buttocks and the thigh) in the seat back or the seat cushion. The overhanging portion also means an overhanging portion in the seat back or seat cushion.

  In the vehicle seat described above, the maximum output of the first heater can be larger than the maximum output of the second heater.

  According to the present invention, in the heating period when the instruction to heat the sheet is received, the output balance between the first heater and the second heater is made different from that during the temperature maintenance after the detected temperature reaches the target temperature. However, by determining the output of the second heater based on the integrated electric energy output to the first heater, the temperature of the part corresponding to the first heater and the part corresponding to the second heater are both adjusted to an appropriate temperature. can do. For this reason, the seat surface temperature can be quickly felt as an appropriate temperature by, for example, quickly heating a part where the temperature is easily felt, and the temperature balance between the part corresponding to the first heater and the part corresponding to the second heater. Can also be adjusted to make a comfortable seat.

  According to the present invention, by arranging the first heater at a part where the temperature is particularly sensitive, even if the total output to the heater is limited, the part corresponding to the first heater is quickly heated. be able to.

  According to the present invention, after the detected temperature detected by the temperature sensor at the portion corresponding to the first heater reaches the first temperature, the second output ratio of the second heater is increased to correspond to the second heater. The temperature of the part can be brought close to the temperature of the part corresponding to the first heater.

  According to the present invention, it is possible to balance the temperature of the portion corresponding to the first heater and the temperature of the portion corresponding to the second heater.

1 is a perspective view of a vehicle seat showing an embodiment of a vehicle seat according to the present invention. It is a flowchart which shows the process of a control apparatus. It is the graph (a) which shows the temperature change of the seat surface part and overhang | projection part in a heating period, the graph (b) which shows the output of a 1st heater and a 2nd heater, and the graph of integrated electric energy W.

  Hereinafter, an embodiment of a vehicle seat according to the present invention will be described with reference to the accompanying drawings. For example, as shown in FIG. 1, the vehicle seat according to the embodiment is configured as a vehicle seat S mounted on an automobile. The vehicle seat S includes a seat cushion S1, a seat back S2, and a headrest S3 in which a pad material made of a cushion material such as urethane foam is covered with a skin material such as synthetic leather or fabric.

The seat cushion S1 is disposed on the left and right sides of the seat surface portion S11 and the seat surface portion S11, which is disposed in the center of the left and right to support and support the occupant's buttocks and thighs from below. In order to support, it has the overhang | projection part S12 which protruded on the passenger | crew side.
Similarly, the seat back S2 is disposed at the center of the left and right sides, and is disposed on both the left and right sides of the seat surface portion S21 and the seat surface portion S21 that contacts the back of the occupant and supports the back from behind. In order to support the side portion, an overhang portion S22 that protrudes toward the passenger side is provided.

  Center heaters 11 and 12 are arranged as first heaters 10 on the inner surface of the seat surface S11 of the seat cushion S1 and the seat surface S21 of the seat back S2, respectively. In addition, side heaters 21 and 22 are arranged as second heaters 20 on the inner side of the outer skin of the overhanging portion S12 of the seat cushion S1 and the overhanging portion S22 of the seat back S2, respectively. That is, the portions corresponding to the first heater 10 are the seat surface portions S11 and S21, and the portions corresponding to the second heater 20 are the overhang portions S12 and S22.

  The seat surface S21 of the seat back S2 incorporates a temperature sensor 30 in a portion corresponding to the first heater 10 inside the skin. The temperature sensor 30 is disposed at a position that is not affected by the body temperature of the occupant. For example, the temperature sensor 30 can be disposed at the lower part of the seat back S2 or the rear part of the seat cushion S1. Note that there is a substantially constant correlation between the temperature detected by the temperature sensor 30 and the temperature of the portion of the seat surface portion S21 where the occupant contacts. The control device 100 may perform the control using the temperature itself detected by the temperature sensor 30 as the detected temperature, or estimates the temperature of the portion in contact with the occupant based on the above-described correlation and detects the estimated temperature. Control may be performed as the temperature T.

  In the vehicle seat S, a control device 100 is disposed at an appropriate position. The temperature sensor 30 described above is connected to the control device 100 so as to output a signal of the detected temperature T to the control device 100. The first heater 10 and the second heater 20 are connected to the control device 100. The control device 100 is supplied with electric power from a power supply device 90 driven by a battery mounted on the vehicle, and the electric power is supplied to the first heater 10 and the second heater based on the detected temperature T acquired from the temperature sensor 30. The output of the heater 20 is configured to be controlled. The power supply device 90 is configured to supply power within the range of a predetermined upper limit output for the first heater 10 and the second heater 20 of the vehicle seat S. In the present embodiment, 100 W is used as an example. The upper limit.

The control device 100 is connected to an operation switch of a heater mounted on the vehicle, receives a command for heating the vehicle seat S from the operation switch, and controls the first heater 10 and the second heater 20. In the heating period in which the control device 100 increases the detected temperature T toward the target temperature T2 when receiving an instruction from the operation switch, the control device 100 intensively heats the first heater 10 to contact the occupants. The first stage that quickly raises the temperature, the second stage that starts heating the second heater 20 and brings the temperature of the overhang portions S12 and S22 closer to the temperature of the seat surface portions S11 and S21, and the overhang portions S12 and S22 After the temperature has risen to some extent, a third stage that adjusts the detected temperature T to match the target temperature T2 is executed.
In addition, when the heater is used once before the operation of the operation switch or when it is warm, the detected temperature T may already be higher than the target temperature T2 when a heating instruction is received by the operation switch. . In that case, the control apparatus 100 does not execute the control of the heating period here, and performs control in the same manner as in the third stage.

For this reason, the control device 100 determines whether or not the detected temperature T has reached the first temperature T1 lower than the target temperature T2 as a reference for switching from the first stage to the second stage. In the first stage in which the detected temperature T does not reach the first temperature T1, the control device 100 supplies power only to the first heater 10, does not supply power to the second heater 20, and does not supply power. Is controlled at a first output ratio of 100%.
In the present specification, the ratio of the output with respect to the maximum output of the first heater 10 is referred to as a first output ratio, and the ratio of the output with respect to the maximum output of the second heater 20 is referred to as a second output ratio. For ease of understanding, the maximum output of the first heater 10 and the second heater 20 is exemplified. The maximum output of the first heater 10 is the total allowable maximum output of the first heater 10 and the second heater 20 ( 100W), and the maximum output of the second heater 20 is 50W. That is, when the first heater 10 is output at 100% in the first stage, 100 W of power is supplied.
The control device 100 does not return to the first stage after the detected temperature T once reaches the first temperature T1 and proceeds to the second stage. Therefore, when the detected temperature T reaches the first temperature T1, the control device 100 sets a flag F indicating that to 1. Note that the initial value of the flag F is 0, and is reset to 0 when power is not supplied to the control device 100 such as when the operation switch is turned off.

Further, in the second stage after the detected temperature T reaches the first temperature T1, the control device 100 uses the capacity of the second heater 20 as much as possible to set the temperature of the overhang portions S12, S22 of the seat surface portions S11, S21. In order to approach the temperature, the second output ratio is set to 100%, and the first output ratio is set to an appropriate value within the allowable maximum output range. Therefore, the control device 100 supplies power to the second heater 20 at the second output ratio of 100% in the second stage. That is, the control device 100 supplies power to the second heater at 50W. On the other hand, for control of the first heater 10, the control device 100 calculates the necessary control amount mv based on the detected temperature T and the target temperature T2. The necessary control amount mv is, for example, a necessary control amount for so-called PI control.
mv = Kp × e + ie / Ki
Can be calculated.

  Here, e is a difference between the target temperature T2 and the detected temperature T, Kp is a proportional control constant, ie is an integral (integration) of e within a predetermined period in the past, and Ki is an integral control constant. It is. The constants Kp and Ki are used as necessary instruction values mv as output instruction values (values indicating the first output ratio and the second output ratio) in the third stage after the detected temperature T approaches the target temperature T2. It is set to be possible. In addition, the detected temperature T and the target temperature T2 do not need to be a unit such as “° C.” in the calculation here, and may be a numerical value of the voltage output from the temperature sensor 30. The constants Kp and Ki may be adjusted as appropriate according to the scale of these temperature values. Note that, according to the above calculation, mv is 100 in the first stage and the second stage (that is, in a state where heating is desired to be performed with as high an output as possible) because the difference e between the target temperature T2 and the detected temperature T is large. It may exceed. Since power is supplied to the first heater 10 and the second heater 20 at a value of the output ratio (0 to 100%), when mv exceeds 100, 100 is set. The That is, mv is calculated in the range of 100 or less of the upper limit value.

  In the second stage, power is supplied to the second heater 20 at 50 W, so the remaining allowable maximum output 100 W is 50 W. For this reason, in the second stage, the first heater 10 needs to be controlled at 50 W or less. Therefore, when the calculated required control amount mv is greater than 50, the control device 100 sets the first heater 10 to 50 W, that is, When the control is performed at the first output ratio of 50% and the required control amount mv is 50 or less, the first heater 10 is controlled using the calculated required control amount mv as the first output ratio. Accordingly, the first heater 10 is controlled at an output ratio of 50% or less in the second stage.

  Switching between the second stage and the third stage is performed when the temperature of the overhanging portions S12 and S22 approaches the temperature of the seating surface portions S11 and S21. In this embodiment, since only one temperature sensor 30 is provided on the seat surface portion S21, the control device 100 estimates that the temperature of the overhang portions S12 and S22 has approached the temperature of the seat surface portions S11 and S21. Is performed on the basis of the amount of heat supplied to the seating surface portions S11 and S21 by the first heater 10 from the start of heating, that is, the integrated power amount.

  For example, the heat capacity of the seat surface portions S11 and S21 and the heat capacity of the overhang portions S12 and S22 are the same, and the temperatures of both portions at the start of heating are the same, and are supplied to the seat surface portions S11 and S21 and the overhang portions S12 and S22. If the total heat is the same, both parts should rise to approximately the same temperature. Of course, for the part that started heating earlier, the amount of heat released increases as long as the temperature is high, so the temperature does not exactly match, but if you adjust the amount of heat supplied based on the heating test results The temperature can be adjusted to a sufficiently similar level. Similarly, the difference between the heat capacities of the seat surface portions S11 and S21 and the overhang portions S12 and S22 is a case where power is supplied prior to the first heater 10 by adjusting the amount of heat supplied based on the heating test result. However, it can be adjusted to the same temperature.

Therefore, in the present embodiment, the control device 100 determines the accumulated power amount W as a predetermined first coefficient for the supplied power amount (wattage) at a predetermined time, for example, every control cycle (for example, 10 msec). The value multiplied by A1 is integrated. That is, in the first stage that outputs the first heater 10 at 100% (100 W),
W = W + 100 × A1
Then, the integrated power amount W is calculated.

  In the second stage, the first heater 10 is controlled as 50 W (50%) or the value of the required control amount mv as the first output ratio, so that 50 × A1 or mv × A1 is set for each control cycle. Add to the integrated power amount W.

On the other hand, from the start of heating, it is determined whether or not the amount of power per unit area (heat amount) supplied to the seating surface portions S11 and S21 is equal to the amount of power per unit area supplied to the overhang portions S12 and S22. Therefore, in the second stage, the control device 100 subtracts, from the integrated power amount W, a value obtained by multiplying the power amount (wattage) supplied to the second heater 20 by the second coefficient A2. In the second stage, since the second heater 20 is controlled at 50 W, which is the maximum output of the second heater 20, 50 × A2 is subtracted from the integrated power amount W. Then, when the integrated power amount W becomes a predetermined value or less, for example, 0 or less, the second stage is finished, and the process proceeds to the third stage.
In the present embodiment, the second coefficient A2 is larger than the first coefficient A1, and as an example, the first coefficient A1 is 0.01 and the second coefficient A2 is 0.04.

  In the third stage, the temperatures of the seating surface portions S11, S21 and the overhang portions S12, S22 are already close to some extent, and are also close to the target temperature T2, so both the first heater 10 and the second heater 20 are necessary. It is controlled by the control amount mv. In the present embodiment, the first heater 10 and the second heater 20 have the same necessary control amount (output ratio) mv after the temperatures of the seat surface portions S11 and S21 and the overhang portions S12 and S22 approach the target temperature T2. When the capacities of the first heater 10 and the second heater 20 (maximum output) are selected so that the control can be performed in the above, the capacities of the first heater 10 and the second heater 20 are not selected as such. Alternatively, individual coefficients B1 and B2 prepared corresponding to the first heater 10 and the second heater 20 may be controlled by multiplying them by mv. For example, the first heater 10 can be controlled at an output ratio of mv × B1, and the second heater 20 can be controlled at an output ratio of mv × B2.

Processing of the control device 100 in the vehicle seat S as described above will be described with reference to FIG.
The control device 100 repeatedly performs the processing from the start to the end shown in FIG. 2 for each control cycle. First, the control device 100 determines whether or not a heater heating instruction has been received. If there is no instruction (S1, No), the process ends. If there is an instruction (S1, Yes), the process proceeds to step S2.
When there is an instruction to heat the heater, the control device 100 calculates the necessary control amount mv (S2), and acquires the detected temperature T from the temperature sensor 30 (S3).

  Then, the control device 100 determines whether or not the flag F is 1, and if it is not 1 (S4, No), it proceeds to step S10, and if it is 1 (S4, Yes), it enters the first stage in step S10. Without determining whether or not, the process proceeds to step S20.

  Then, the control device 100 determines whether or not the detected temperature T is equal to or higher than the first temperature T1. When the detected temperature T is not equal to or higher than the first temperature T1 (S10, No), the first heater 10 is set to 100% as the first stage, that is, The power is output at 100 W (S11), the integrated electric energy W is calculated by W = W + 100 × A1 (S12), and the process is terminated.

  On the other hand, when the detected temperature T is equal to or higher than the first temperature T1 (S10, Yes), the flag F is set to 1 (S13), and it is further determined whether or not the integrated power amount W is 0 or less. When the integrated power amount W is 0 or less (S20, Yes), since it is the third stage, the control device 100 controls the first heater 10 and the second heater 20 with the required control amount mv (S21), and the process Exit.

  When the integrated power amount W is not 0 or less (No at S20), since it is the second stage, the control device 100 determines whether or not the necessary control amount mv is larger than 50. When the necessary control amount mv is larger than the upper limit value 50 (S30, Yes), the control device 100 outputs the first heater 10 at 50% (50 W) and outputs the second heater 20 at 100% (50 W). (S31). Then, the integrated power amount W is calculated as W = W + 50 × A1-50 × A2 (S32), and the process is terminated.

  On the other hand, when the necessary control amount mv is not larger than the upper limit value of 50 (S30, No), the control device 100 outputs the first heater 10 at mv (less than 50W, 100W × mv), and the second heater. 20 is output at 100% (50 W) (S33). Then, the integrated power amount W is calculated as W = W + mv × A1-50 × A2 (S34), and the process is terminated.

According to the processing described above, when the passenger operates the operation switch at low temperatures to start heating the vehicle seat S, the first heater 10 and the second heater 10 as shown in FIGS. The output of 20 and the temperatures of the seat surface portions S11 and S21 and the overhang portions S12 and S22 change. In the first stage up to time t1, all the allowable maximum output of 100 W is used by the first heater 10 to heat the temperature of the seating surface portions S11 and S21 as quickly as possible. As a result, the contact from the occupant is strong, and the portion from the waist to the back where the occupant is particularly sensitive to temperature can be warmed to give the occupant a comfortable seating feeling. It should be noted that the temperature of the overhang portions S12 and S22 is increased up to time t1 because the seat is warmed by the occupant's heat.
In the first stage, as shown in FIG. 3C, the integrated power amount W is integrated with the power output to the first heater 10.

  When the detected temperature T detected by the temperature sensor 30 reaches the first temperature T1 lower than the target temperature T2 at time t1, the process proceeds to the second stage. In the second stage, as shown in FIG. 3B, power is supplied to the second heater 20 with a maximum output of 50 W (100%), and the remaining 50 W of power is supplied to the first heater 10. To do. In FIG. 3C, the integrated power amount W decreases as power is supplied to the second heater 20 until time t2.

  Then, in the second stage (time t1 to t3), when the detected temperature T approaches the target temperature T, the difference e becomes smaller. As a result, the mv becomes 50 or less, so the first heater 10 has a value of 50 or less. Control is performed with the necessary control amount mv (power of 50 W or less) (time t2 to t3).

  Then, at time t3, as shown in FIG. 3C, when the integrated power amount W becomes 0 or less, the process proceeds to the third stage. In the third stage, since the temperatures of the seating surface portions S11 and S21 and the overhang portions S12 and S22 are already close to the target temperature T2, the first heater 10 and the second heater 20 are controlled with the necessary control amount mv. In the present embodiment, since the maximum output of the second heater 20 is half of the maximum output of the first heater 10, when controlled with the same required control amount mv, the power (wattage) of the second heater 20 is the first output. Half of one heater 10.

  According to the vehicle seat S of the present embodiment described above, the detected temperature T indicates the output balance of the first heater 10 and the second heater 20 during the heating period when the instruction for heating the vehicle seat S is received. Even if the temperature is different from that at the time of maintaining the temperature after reaching the target temperature T2, the output of the second heater 20 is determined based on the integrated power amount W output to the first heater 10, thereby overhanging the seating surface portions S11 and S21. The temperatures of the parts S12 and S22 can both be adjusted to appropriate temperatures. Specifically, in the first stage, electric power is supplied only to the first heater 10 at an output rate of 100%, and electric power is not supplied to the second heater 20, so that the seating surface portion at the end of the first stage. Although a temperature difference between S11, S21 and the overhang portions S12, S22 occurs, the integrated power amount per unit area supplied to the second heater 20 in the subsequent second stage per unit area supplied to the first heater 10 By combining with the integrated electric energy, the temperature difference between the seating surface portions S11 and S21 and the overhang portions S12 and S22 can be almost eliminated in the third stage. In this way, the seat surface portions S11 and S21 that are easy to feel the temperature can be quickly brought to an appropriate temperature, and the temperature difference between the seat surface portions S11 and S21 and the overhang portions S12 and S22 is suppressed to provide a comfortable seat. be able to. Further, it is possible to realize control with a simple configuration, in which the temperature at a plurality of locations is preferentially heated by one temperature sensor 30 and finally the temperature is set to the same temperature.

  Further, in the vehicle seat S, the first heater 10 is arranged on the seat surface portions S11 and S21 that are particularly sensitive to temperature, so that even if the total output to the heater is limited, the seat surface portions S11 and S21. The part corresponding to can be heated quickly.

  Moreover, since the control apparatus 100 makes the 2nd output ratio of the 2nd heater 20 larger than the 1st output ratio of the 1st heater 10 in a 2nd stage, the temperature of overhang | projection part S12, S22 corresponding to the 2nd heater 20 is carried out. Can be brought close to the temperature of the seating surface portions S11 and S21 corresponding to the first heater 10.

  Further, in the second stage, when the required control amount mv is equal to or lower than the upper limit value, the control device 100 controls the first heater 10 with the required control amount mv, so that the seating surface portions S11 and S21 are heated faster than necessary. Thus, it is possible to prevent the balance with the temperature of the overhang portions S12 and S22 corresponding to the second heater 20 from being lost.

  Further, since the second coefficient A2 is larger than the first coefficient A1, the heat capacity of the seating surface portions S11, S21 corresponding to the first heater 10 and the overhang portions S12, S22 corresponding to the second heater 20 is matched. Thus, it is possible to balance the temperatures of the seat surface portions S11 and S21 and the overhang portions S12 and S22.

  The vehicle seat S as one embodiment of the vehicle seat according to the present invention has been described above, but the vehicle seat according to the present invention is not limited to the vehicle seat S according to the embodiment, and the structure thereof. Can be appropriately changed.

  For example, in the above-described embodiment, an independent type seat that is employed in a driver's seat of a passenger car is illustrated, but it can also be employed in a bench type seat that is often employed in a rear seat of a passenger car.

  In the above embodiment, the first heater is provided on the seat surface portion and the second heater is provided on the overhanging portion, but the arrangement of the first heater and the second heater is not particularly limited. For example, the first heater may be a seat back heater and the second heater may be a seat cushion heater.

  In the embodiment, the vehicle seat is exemplified as the vehicle seat, but the vehicle seat may be configured as a boat seat or an aircraft seat.

DESCRIPTION OF SYMBOLS 10 1st heater 11, 12 Center heater 20 2nd heater 21, 22 Side heater 30 Temperature sensor 100 Control device S Vehicle seat S1 Seat cushion S2 Seat back S11, S21 Seat surface part S12, S22 Overhang part

Claims (15)

The outputs of the first heater and the second heater are controlled based on a first heater and a second heater, a temperature sensor provided in a portion corresponding to the first heater, and a detected temperature acquired from the temperature sensor. A vehicle seat equipped with a control device,
The control device is based on an integrated electric energy obtained by integrating the electric energy output to the first heater in a heating period in which the detected temperature is increased toward the target temperature when receiving an instruction to heat the vehicle seat. A vehicle seat that determines an output of the second heater.   The said control apparatus supplies electric power only to a said 1st heater, if the said detected temperature has not reached the 1st temperature lower than the said target temperature in the said heating period. Vehicle seat.   The vehicle seat according to claim 2, wherein the control device starts power supply to the second heater when the detected temperature reaches the first temperature during the heating period.   The control device supplies power to both the first heater and the second heater when the detected temperature reaches a first temperature lower than the target temperature in the heating period. The vehicle seat according to any one of claims 1 to 3.   In the heating period, when the detected temperature reaches the first temperature, the control device has a maximum output of the second heater that is higher than a first output ratio that is a ratio of an output to a maximum output of the first heater. 5. The vehicle seat according to claim 4, wherein electric power is supplied to the first heater and the second heater such that a second output ratio, which is a ratio of output to output, is larger.   The vehicle seat according to claim 5, wherein the first output ratio is 50% or less and the second output ratio is 100%.   The control device calculates a required control amount based on the target temperature and the detected temperature when the detected temperature reaches the first temperature in the heating period, and the required control amount is a predetermined upper limit value. The first heater is controlled with the necessary control amount in the following cases, and when the necessary control amount is larger than a predetermined upper limit value, the first heater is controlled with the upper limit value as a control amount. The vehicle seat according to any one of claims 4 to 6.   The control device integrates the amount of power output to the first heater every predetermined time until the detected temperature reaches a first temperature lower than the target temperature in the heating period, and the integrated power amount The vehicle seat according to claim 1, wherein the vehicle seat is calculated.   The control device starts power supply to the second heater when the detected temperature reaches the target temperature during the heating period, and then the amount of power supplied to the second heater every predetermined time. The vehicle seat according to claim 8, wherein is subtracted from the integrated power amount.   The control device supplies power to both the first heater and the second heater when the detected temperature reaches the target temperature during the heating period, and outputs the power to the first heater every predetermined time. The vehicle seat according to claim 8, wherein the power amount output to the second heater is subtracted from the cumulative power amount while adding the calculated power amount to the cumulative power amount.   The control device adds a value obtained by multiplying the amount of power supplied to the first heater by a first coefficient to the integrated power amount, and sets a value obtained by multiplying the amount of power supplied to the second heater by a second coefficient. The vehicle seat according to claim 9 or 10, wherein the second coefficient is larger than the first coefficient by subtracting from an integrated electric energy.   The control device calculates a required control amount based on the target temperature and the detected temperature and controls the first heater with the required control amount when the integrated power amount becomes a predetermined value or less. The vehicle seat according to any one of claims 9 to 11, wherein the vehicle seat is a vehicle seat.   The control device has the same output ratio as the ratio of the output with respect to the maximum output of the first heater when the first heater is controlled with the required control amount when the integrated power amount becomes a predetermined value or less. The vehicle seat according to claim 12, wherein the second heater is controlled. The first heater is provided on a seat surface portion of a seat,
The said 2nd heater is arrange | positioned in the overhang | projection part which is arrange | positioned in the left-right outer side of the said seat surface part, and protruded on the passenger | crew side in order to support a passenger | crew's side part. The vehicle seat according to claim 1.   The vehicle seat according to any one of claims 1 to 14, wherein a maximum output of the first heater is larger than a maximum output of the second heater.

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