JP5655227B2 - Vehicle seat drive device - Google Patents

Description

  The present invention relates to a vehicle seat drive device capable of moving a seat used when an elderly person or a disabled person gets on and off a vehicle between a predetermined position and a boarding position in a vehicle interior.

A related sheet driving apparatus is described in Patent Document 1.
As shown in FIG. 11, the seat driving device 100 rotates a seat body 102 used as a passenger seat left by about 90 ° from a predetermined position I in the passenger compartment to the entrance / exit 104 side. It is configured to be moved to an outdoor entry / exit position II.
Further, the seat body 102 is provided with a seating sensor (not shown) that detects the presence or absence of a seated person. When a seated person is not detected by the seating sensor, that is, when a person is not seated on the seat body 102 (when it is empty), the moving speed of the seat body 102 is higher than that when a seated person is seated. It is configured to be able to. For this reason, for example, when an elderly person gets on the vehicle, it is possible to shorten the time for moving the seat body 102 in the vehicle interior to the boarding / exiting position II outside the vehicle interior, which improves usability.

JP 2007-161010 A

  In the seat driving device 100 described above, the individual operations of the seat driving device 100 are the same and only the moving speed is different between when the seat body 102 is empty and when a person is seated on the seat body 102. . However, when the seat body 102 is empty, for example, there is no need to consider interference between the seated person and the entrance / exit edge, so that the seat body 102 does not have to be operated as in the case where a person is seated. There is a good case. For this reason, when the sheet main body 102 is empty, the method of speeding up all the operations of the sheet driving device places a burden on the motor that is the driving source, resulting in wasted power consumption.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the problem to be solved by the present invention is to reduce the operating time of the seat body when the seat body is empty, so that the vehicle seat can be shortened. This is to improve the usability of the motor and to avoid unnecessary speedup and to avoid waste of motor power consumption.

The above-described problems are solved by the inventions of the claims.
The invention according to claim 1 is a vehicle seat drive device capable of moving a seat body between a predetermined position in a vehicle interior and a boarding / alighting position outside the vehicle interior, and seating of the seat body A series of driving operations when a seated person is not detected by the seating sensor, a series of driving operations when the seated person is detected by the seating sensor, A part of the driving operation is omitted.

According to the present invention, when a seated person is not detected by the seating sensor, that is, when the seat body is empty, the driving operation of the seat driving device is performed when the person is seated on the seat body. In contrast to the operation, some driving operations are omitted.
For this reason, when the seat body is empty, the operating time for moving the seat body between a predetermined position in the passenger compartment and a boarding / exiting position outside the passenger compartment is shortened compared to when a person is seated on the seat body. become able to. Therefore, the usability of the vehicle seat is improved.
Further, since the operation time of the seat driving device is shortened by omitting a part of the driving operation of the seat driving device, the power consumption of the motor can be reduced.
Here, “a part of the drive operation is omitted” includes not only a case where a part of the plurality of drive operations is omitted, but also a case where the drive distance of the same drive operation is shortened.
The “seat body” includes not only the seat body of the vehicle seat but also a wheelchair.

According to the invention of claim 2, it has a front-rear slide mechanism that slides the seat body in the vehicle front-rear direction in the passenger compartment, and a rotation mechanism that horizontally rotates the seat body between a vehicle forward position and a vehicle lateral position. The origin position of the seat body when a seated person is not detected by the seating sensor and the origin position of the seat body when a seated person is detected by the seating sensor are shifted in the vehicle front-rear direction, and the seating When the person is not detected, the front / rear slide amount of the seat body is set smaller than the front / rear slide amount when the seated person is detected.
For this reason, the slide time when the seat body is empty can be shortened, and the power consumption of the motor can be reduced.

According to the invention of claim 3, the seat body rotation speed of the rotation mechanism when the seated person is not detected by the seating sensor is larger than the seat body rotation speed of the rotation mechanism when the seated person is detected by the seating sensor. It is characterized by being set.
For this reason, it becomes possible to shorten the sheet body rotation time when the sheet body is empty. Here, since the rotation angle of the seat body is the same when the seat body is empty and when a person is seated, even if the seat body rotation speed is set large when the seat body is empty, there is no waste of power. .

According to the invention of claim 4, the reclining mechanism is provided that can adjust the inclination angle of the seat back with respect to the seat cushion of the seat body, and when the seated person is detected by the seating sensor, the seat body is being moved. When the reclining mechanism is operated and no seated person is detected by the seating sensor, the operation of the reclining mechanism is omitted.
As described above, since the operation of the reclining mechanism is omitted when the seat body is empty, the operation time of the seat driving device is shortened by the omission of the operation of the reclining mechanism, and the power consumption of the motor can be reduced. it can.

  According to the present invention, when the seat body is empty, the operation time of the seat body can be shortened, so that the usability of the vehicle seat can be improved. Furthermore, waste of power consumption of the motor that is the drive source can be eliminated.

It is the model perspective view which looked at the vehicle seat which concerns on Embodiment 1 of this invention from diagonally backward of the vehicle. It is a model side view showing the reclining mechanism in the seat drive device of the said vehicle seat. It is the schematic diagram which looked at the seat drive device of the above-mentioned vehicular seat from the back of a seat. It is a perspective view showing the front-and-rear slide mechanism, the rotation mechanism, the rotation base, and the like of the vehicle seat drive device. It is a model side view showing operation | movement of the seat drive device of the said vehicle seat. It is a model side view showing operation | movement of the seat drive device of the said vehicle seat. It is a model side view showing operation | movement of the seat drive device of the said vehicle seat. It is a schematic plan view showing the movement operation | movement of the said vehicle seat (A figure, B figure, C figure, D figure, E figure). It is a time chart showing operation | movement of a seat drive device when the person is sitting on the seat main body in the said vehicle seat. It is a time chart showing operation | movement of a seat drive device when a seat main body is empty in the said vehicle seat. It is a schematic plan view showing the movement operation | movement of the conventional vehicle seat.

[Embodiment 1]
Hereinafter, based on FIGS. 1-10, the vehicle seat drive device which concerns on Embodiment 1 of this invention is demonstrated. The vehicle seat drive device according to the present embodiment is a vehicle seat drive device used when an elderly person or a disabled person gets on and off the vehicle.
Here, front and rear, right and left and up and down in the figure correspond to front and rear, left and right and up and down of the vehicle.

<About the outline of the vehicle seat S>
As shown in FIG. 1 and the like, the vehicle seat S is a seat used as a passenger seat of the vehicle C, and the seat body 10 and the seat body 10 are placed between a predetermined position in the vehicle interior and a boarding / exiting position outside the vehicle interior. The seat driving device 200 is configured to move and further perform a reclining operation of the seat body 10 during the movement.
The seat drive device 200 includes a front / rear slide mechanism 20 installed on the vehicle floor F, and a rotation mechanism 30 installed on the front / rear slide base 21 of the front / rear slide mechanism 20, as shown in a schematic diagram of FIG. The lift mechanism 50 installed on the rotation base 35 of the rotation mechanism 30 and the outer / inner slide mechanism 70 are provided. The seat body 10 is installed on the outer / inner slide mechanism 70.
Further, as shown in FIG. 2, the seat driving device 200 includes a reclining mechanism 90 provided in the seat body 10.

<Fore-and-aft slide mechanism 20>
The front / rear slide mechanism 20 of the seat drive device 200 is a mechanism that moves the seat body 10 in the vehicle front-rear direction in the vehicle interior. As shown in FIGS. 3 and 4, the front-rear slide mechanism 20 includes a pair of left and right fixed-side rails 22 that are installed on the fixed base 23 of the vehicle floor F so as to extend in the vehicle front-rear direction, and those fixed-side rails 22. It is comprised from the front-and-back slide base 21 supported in the state which can be slid back and forth, and the drive part 24 (refer FIG. 3) of the front-and-back slide mechanism 20. In FIG. The drive unit 24 includes a drive motor 24 a installed on the fixed base 23, a screw shaft 24 b rotated by the drive motor 24 a, and a nut portion 24 c fixed to the lower surface of the front and rear slide base 21. . The front / rear slide base 21 is configured to slide back and forth by the screwing action of the screw shaft 24b and the nut portion 24c of the drive unit 24.

<About Rotating Mechanism 30>
As shown in FIGS. 3 and 4, a rotation mechanism 30 is installed on the front / rear slide base 21. The rotation mechanism 30 is a mechanism that horizontally rotates the seat body 10 about 100 degrees between a seating position facing forward of the vehicle and a lateral position facing the entrance / exit D.
As shown in FIG. 3 and the like, the rotation mechanism 30 includes an inner ring 31a fixed on the front / rear slide base 21, an outer ring 31b rotatably supported on the inner ring 31a, and a rotation base fixed on the outer ring 31b. 35 and a drive unit 32 (see FIG. 3, omitted in FIG. 4) for rotating the outer ring 31b with respect to the inner ring 31a. The drive unit 32 includes a rotary motor 32m and a gear transmission mechanism 32a installed on the upper surface of the front and rear slide base 21. Then, the rotation output of the rotary motor 32m is transmitted to the outer ring 31b via the gear transmission mechanism 32a, so that the rotation base 35 rotates horizontally with respect to the front / rear slide base 21.

<About lifting mechanism 50>
An elevating mechanism 50 is installed on the rotation base 35. As shown in FIGS. 4 to 7, the elevating mechanism 50 is a mechanism for elevating the seat body 10 outside the passenger compartment, and a horizontal slide mechanism 40 (see FIGS. 4 and 7) serving as a horizontal driving source, A four-bar linkage mechanism 51 (see FIG. 7 and the like) that rotates in the vertical direction in response to the slide operation of the slide mechanism 40, a lifting guide member 57 (see FIG. 4) that guides the four-bar link mechanism 51, and a four-bar link An elevating base 55 (see FIG. 7 and the like) that is moved up and down by the mechanism 51 is provided. The seat body 10 is installed on the elevating base 55 via an outer / inner slide mechanism 70 (described later).
As shown in FIGS. 3 and 4, the lateral slide mechanism 40 includes a pair of guide rails 41 attached in parallel along the left and right edges of the rotation base 35, and a slider that slides along the guide rails 41. 42, a horizontal slide base 44 placed on the slider 42, and a drive unit 45 (see FIG. 3, omitted in FIG. 4) for sliding the horizontal slide base 44 along the guide rail 41. . As shown in FIG. 3, the drive unit 45 is fixed to a lower surface of the horizontal slide base 44, a screw shaft 45 b arranged along the slide direction on the rotation base 35, a drive motor 45 a that rotates the screw shaft 45 b. And a nut 45c screwed with the screw shaft 45b.

As shown in FIG. 5 and the like, the base end portions of the pair of left and right four-bar linkage mechanisms 51 are connected to the horizontal slide base 44 so as to be vertically rotatable. The four-bar linkage mechanism 51 is a mechanism that raises and lowers the elevating base 55 in a horizontal state, and includes an inner link arm 53 and an outer link arm 52. The base ends of the link arms 52 and 53 are supported by the side portions of the horizontal slide base 44 of the horizontal slide mechanism 40 so as to be vertically rotatable via a support shaft (not shown). Further, the side walls of the elevating base 55 are connected to the distal ends of the link arms 52 and 53 through a support shaft in a state in which the side walls can be vertically rotated.
In addition, as shown in FIG. 4, the rotary base 35 is provided with an elevating guide member 57 that supports the left and right outer link arms 52 of the four-bar linkage mechanism 51 from below at the outer positions of the left and right guide rails 41. . The raising / lowering guide member 57 can convert the operation in which the four-bar linkage mechanism 51 moves forward or backward together with the lateral slide base 44 into a downward rotation operation or an upward rotation operation of the four-bar linkage mechanism 51. It is configured. 5 to 7, the lifting guide member 57 is omitted.

<About the outer / inner slide mechanism 70>
On the lift base 55 of the lift mechanism 50, as shown in FIGS. 6 and 7, etc., an outer / inner slide mechanism 70 for moving the seat body 10 forward or backward relative to the lift base 55 is provided. As shown in FIG. 3, the outer / inner slide mechanism 70 includes a seat base 75 that supports the seat body 10, a pair of left and right guide rails 74 a fixed to the lower surface side of the seat base 75, and a lift base 55. The slider 74b that slidably supports the guide rail 74a, and a drive unit 76 that is a drive source of the outer / inner slide mechanism 70 are provided.
The drive unit 76 rotates a rack 73 provided parallel to the guide rail 74 a on the lower surface of the seat base 75, a pinion 72 provided so as to mesh with the rack 73 on the lifting base 55, and the pinion 72. And a drive motor 71.

<About the seat body 10 and the reclining mechanism 90>
As shown in FIG. 1 and the like, the seat body 10 includes a seat cushion 11 and a seat back 12, and a frame of the seat cushion 11 is connected to a seat base 75 of the outer / inner slide mechanism 70 (see FIG. 1). 3 etc.).
As shown in FIG. 1 and the like, the seat cushion 11 of the seat body 10 is provided with a seating sensor 80 that receives the weight when a person is seated on the seat body 10 and detects the presence or absence of a seated person.
Further, as shown in FIGS. 1 and 2, the seat body 10 is provided with a reclining mechanism 90 that adjusts the inclination of the seat back 12 with respect to the seat cushion 11. As shown in FIG. 2, the reclining mechanism 90 is provided so as to surround the external gear 92 provided on the frame side of the seat back 12 and the external gear 92 on the frame side of the seat cushion 11. An internal gear 94 that meshes with the tooth gear 92, a recliner motor (not shown) that rotates the external gear 92, and a limit switch 96 that detects the reclining origin are configured.
Further, the seat body 10 is provided with a dismounting switch (not shown) for performing the dismounting operation of the seat body 10 and a boarding switch (not illustrated) for performing the riding operation of the seat body 10. .
Here, the electric signals of the getting-on switch, the getting-off switch, and the seating sensor 80 are input to a vehicle control unit (ECU), and the ECU performs the vehicle seat S based on the electric signal and the like. The front / rear slide mechanism 20, the rotation mechanism 30, the elevating mechanism 50, the outer / inner slide mechanism 70, and the reclining mechanism 90 are operated.

<Operation of vehicle seat S>
First, the operation of the vehicle seat S when a person is seated on the seat body 10 will be described with reference to FIGS.
When a person is seated on the seat body 10, the seating sensor 80 is turned on, and the on signal is input to the ECU.
When the seating sensor 80 is on, the seat body 10 in the passenger compartment is held at the rear origin position (see timing I in FIG. 8A and FIG. 9). In order to move the seat body 10 from this state to the boarding / exiting position outside the passenger compartment, after the door Dr of the vehicle C is opened, the getting-off switch is operated.
Thereby, a rotation signal is output from the ECU, and the rotation mechanism 30 operates in a direction to rotate the seat body 10 counterclockwise. Then, a forward slide signal is output from the ECU while the seat body 10 is rotated counterclockwise by a certain angle (see timing II in FIG. 8B). Thereby, in a state where the operation of the rotation mechanism 30 is continued, the front / rear slide mechanism 20 operates in a direction to slide the front / rear slide base 21 forward. That is, the seat body 10 rotates counterclockwise while moving forward from the rear origin position (rotating slide). As a result, interference between the seat body 10 and the center pillar P of the vehicle C is avoided as shown by the two-dot chain line in FIG.

When the rotary slide of the seat body 10 is started, as shown in FIG. 9, a reclining signal is output from the ECU, and the reclining mechanism 90 operates in a direction to tilt the seat back 12 of the seat body 10 backward by a certain angle. Thereby, interference with a seated person's head and a vehicle ceiling part can be avoided. Further, while the seat body 10 is rotating and sliding, a forward signal (downward signal) is output from the ECU to the lateral slide mechanism 40 of the elevating mechanism 50 for a certain period of time, and the lateral slide base 44 moves forward by a certain amount, thereby the seat body. 10 slide lock is released.
Thus, as shown in FIG. 5, when the seat body 10 rotates about 90 ° and faces the entrance D side, an external slide signal is output from the ECU to the outer / inner slide mechanism 70 during the rotation slide. (See timing III in FIG. 9). As a result, the outer / inner slide mechanism 70 operates and the seat body 10 moves forward relative to the lifting base 55 of the lifting mechanism 50 as shown in FIG. That is, the seat body 10 is swung out of the passenger compartment from the entrance D (outside slide). Then, after the outer slide is started, the rotation mechanism 30 and the front / rear slide mechanism 20 are stopped to complete the rotation slide (see FIG. 8C). In this state, the seat body 10 rotates about 100 ° from the vehicle forward position. Further, after the rotation slide is completed, as shown in FIG. 9, the reclining signal is output again from the ECU, and the reclining mechanism 90 operates in a direction in which the seat back 12 of the seat body 10 is tilted by a certain angle.

Next, a forward signal (downward signal) is output from the ECU to the lateral slide mechanism 40 of the lifting mechanism 50 during the outer slide (see timing IV in FIG. 9). As a result, the horizontal slide base 44 of the horizontal slide mechanism 40 advances the four-bar linkage mechanism 51. As a result, as shown in FIG. 7, the four-bar linkage mechanism 51 is rotated downward by the action of the lifting guide member 57, and the seat body 10 is lowered horizontally together with the lifting base 55 (FIG. 8). (See (D)).
Further, a reclining signal is output from the ECU during the lowering process of the seat body 10, and the reclining mechanism 90 operates in a direction to raise the seat back 12 of the seat body 10 at a certain angle. Then, when the seat body 10 reaches the getting-on / off position, the lifting mechanism 50 stops (timing V in FIG. 8E and FIG. 9), and the reclining mechanism 90 returns the seat back 12 of the seat body 10 to the original position again. A series of operations of the vehicle seat S (seat driving device 200) is completed by standing.
When the seat body 10 on which a person is seated is moved from the getting-on / off position to the vehicle interior, the vehicle seat S is operated in the reverse operation to that described above by operating the boarding switch.

Next, the operation of the vehicle seat S when a person is not seated on the seat body 10 (when empty) will be described with reference to FIG.
When a person is not seated on the seat body 10 (when it is empty), the seating sensor 80 is off, and the off signal is input to the ECU.
When the seating sensor 80 is off, the seat body 10 in the passenger compartment is held at the front origin position. That is, the seat body 10 in an empty state is positioned a certain distance ahead of when a person is seated (rear origin position). In this state, when the exit switch is operated after the door Dr of the vehicle C is opened, as shown in FIG. 10, the rotation mechanism 30 and the front / rear slide mechanism 20 operate simultaneously, and the seat body 10 moves to the front origin position. Rotate left while moving forward (rotating slide).
Here, since the seat body 10 in the empty state starts to advance from the front origin position, the operating time of the front / rear slide mechanism 20 is shorter than when a person is seated. For this reason, the operation time of the rotation mechanism 30 that operates simultaneously with the front / rear slide mechanism 20 is also shortened. However, since the rotation angle of the seat body 10 is the same when it is empty and when a person is seated, the rotation speed of the rotation mechanism 30 is high when the seat body 10 is empty.

Further, when the seat body 10 is empty, it is not necessary to consider the interference between the seated person's head and the vehicle ceiling, and therefore the reclining mechanism 90 is not operated.
Next, as shown in FIG. 10, the slide lock of the seat body 10 is released during the rotation slide of the seat body 10. Then, as shown in FIG. 5 and the like, when the seat body 10 rotates about 90 ° and faces the entrance / exit D, the outer / inner slide mechanism 70 operates during the rotation slide, and FIG. 6 and FIG. As shown, the seat body 10 is swung out of the passenger compartment from the entrance D (outside slide). Then, after the outer slide is started, the rotation mechanism 30 and the front / rear slide mechanism 20 are stopped to complete the rotation slide.
Next, during the outer slide, the operation of the elevating mechanism 50 is started, and the seat body 10 moves downward while moving forward by the functions of the lateral slide mechanism 40 and the four-bar linkage mechanism 51. Then, when the seat body 10 reaches the boarding / alighting position, the elevating mechanism 50 stops, and a series of operations of the vehicle seat S (seat driving device 200) is completed.
When the empty seat body 10 is moved from the boarding / exiting position to the vehicle interior, the vehicle seat S is operated in the reverse operation to that described above by operating the boarding switch.

<Advantages of Sheet Driving Device 200 According to the Present Embodiment>
According to the present invention, when the seat main body 10 is empty, the driving operation of the seat driving device 200 is a part of the driving operation of the seat driving device 200 when a person is seated on the seat main body 10. It is omitted.
For this reason, when the seat body 10 is empty, compared to a case where a person is seated on the seat body 10, the operation when the seat body 10 is moved between a predetermined position in the vehicle interior and a boarding / exiting position outside the vehicle interior. Time can be shortened. Therefore, the usability of the vehicle seat is improved.
Further, since the operation time of the seat driving device is shortened by omitting a part of the driving operation of the seat driving device 200, the power consumption of the motor can be reduced.

In addition, the origin position (front origin position) of the seat body 10 in the empty state and the origin position (rear origin position) of the seat body 10 when a person is seated are shifted in the vehicle front-rear direction. The forward / backward slide amount of the seat body 10 in this state is set smaller than the forward / backward slide amount of the seat body 10 when a person is seated. For this reason, the slide time when the seat body 10 is empty can be shortened, and the power consumption of the motor can be reduced.
The rotation speed of the rotation mechanism 30 when the seat body 10 is empty is set to be higher than the rotation speed of the rotation mechanism 30 when a person is seated on the seat body 10. For this reason, it becomes possible to shorten the sheet body rotation time when the sheet body 10 is empty.
Further, since the operation of the reclining mechanism 90 is omitted when the seat main body 10 is empty, the operation time of the seat driving device 200 is shortened by an amount corresponding to the omission of the operation of the reclining mechanism 90 and the power consumption of the motor is reduced. be able to.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the present embodiment, the seat driving device 200 including the front / rear slide mechanism 20, the rotation mechanism 30, the elevating mechanism 50, the outer / inner slide mechanism 70, and the reclining mechanism 90 is illustrated. However, for example, the present invention can also be applied to the seat driving device 200 that does not have the lifting mechanism 50 or the reclining mechanism 90 and the boarding / alighting position is in the passenger compartment.
Further, the present invention can also be applied to a vehicle seat including a front / rear slide mechanism 20, a rotation mechanism 30, and a tilt mechanism that tilts the seat body 10 forward or backward.
Further, in the present embodiment, an example in which the vehicle seat S is used as a passenger seat of the vehicle is shown, but it is also possible to use it as a driver seat, for example.
Furthermore, in this embodiment, the example which applies the seat drive device 200 which concerns on this invention to the vehicle seat S was shown, However, For example, the wheelchair lifter (seat | seat) which gets on and off a wheelchair (seat body) from the rear opening of a one-box vehicle The present invention can also be applied to a drive device.

DESCRIPTION OF SYMBOLS 10 .... Seat body 20 ... Front / back slide mechanism 30 ... Rotation mechanism 80 ... Seating sensor 90 ... Reclining mechanism 200 ... Seat drive device

Claims (4)

A vehicle seat drive device capable of moving a seat body between a predetermined position in a vehicle interior and a boarding / alighting position outside the vehicle interior,
It comprises a seating sensor that detects the presence or absence of a seated person on the seat body,
The series of driving operations in the case where no seated person is detected by the seating sensor is omitted in part of the series of driving operations in the case where the seated person is detected by the seating sensor. A vehicle seat drive device. A vehicle seat drive device according to claim 1,
A front / rear slide mechanism that slides the seat body in the longitudinal direction of the vehicle in a passenger compartment, and a rotation mechanism that horizontally rotates the seat body between a vehicle forward position and a vehicle lateral position;
The origin position of the seat body when a seated person is not detected by the seating sensor and the origin position of the seat body when a seated person is detected by the seating sensor are shifted in the vehicle longitudinal direction,
The seat drive device for a vehicle according to claim 1, wherein a front / rear slide amount of the seat body when the seated person is not detected is set smaller than a front / rear slide amount when the seated person is detected. A vehicle seat drive device according to claim 2,
The seat body rotation speed of the rotating mechanism when no seated person is detected by the seating sensor is set to be larger than the seat body rotating speed of the rotating mechanism when the seated person is detected by the seating sensor. A vehicle seat drive device. A vehicle seat drive device according to any one of claims 1 to 3,
It has a reclining mechanism that can adjust the inclination angle of the seat back with respect to the seat cushion of the seat body,
When a seated person is detected by the seating sensor, the reclining mechanism operates during the movement of the seat body,
The seat drive device for a vehicle according to claim 1, wherein when a seated person is not detected by the seating sensor, the operation of the reclining mechanism is omitted.

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