JPH0513631Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a power seat control device for a vehicle, and more particularly to a power seat control device for a vehicle that aims at the safety of rear seat occupants.

<<Prior Art>> Generally, a power seat includes a slide mechanism that moves the seat cushion back and forth, and a reclining mechanism that adjusts the inclination angle of the seat back.

The slide mechanism section and the reclining mechanism section are unilaterally controlled to move the seat cushion or tilt the seat back within a preset range.

<<Problem to be solved by the invention>> However, when the slide mechanism and the reclining mechanism are centrally controlled within a preset range, it is possible to control the slide mechanism and the reclining mechanism freely within the range, regardless of whether or not there is a person sitting in the rear seat. Because the front seats can be moved to the rear, there is a risk that the front seats may come into contact with rear seat occupants. Or even without contact,
There is a risk that the leg space in the rear seat will become extremely narrow.

The present invention aims to provide a power seat control device for a vehicle that regulates the movement of the seat cushion and the tilting of the seat back depending on the presence or absence of a person sitting on the rear seat, thereby improving the safety and comfort of the person sitting on the rear seat. purpose.

<Means for Solving the Problems> The vehicle power seat control device of the present invention includes a drive means for adjusting the position of the seat cushion of the front seat and an inclination angle of the seat back, and a drive means for adjusting the position of the seat cushion of the front seat and the inclination angle of the seat back. a pressure sensor that detects the presence of a person, and a normal operation that receives a signal from the pressure sensor and secures a sliding amount within the entire front area and rear area of the front seat when the presence of a seated person is not confirmed. and a controller that controls the driving means so that the front seat does not move backward beyond a set position when the pressure sensor confirms the presence of a seated person.

<<Operation>> When the pressure sensor confirms the presence of a person sitting on the rear seat, the controller controls the drive means based on a signal from the pressure sensor to prevent the front seat from moving backward beyond a set position. This makes it possible to consider the safety of rear seat occupants and ensure sufficient leg space.

<<Example>> FIG. 1 is a perspective view showing the overall configuration of a power seat control device for a vehicle according to the present invention, and FIG. 2 is a schematic front view showing a front seat and a rear seat according to the present invention.

Reference numbers 1 and 2 in the figure indicate that the lower side is the vehicle body floor 3.
The figure shows two base frames to which the seat cushion 4a of the front seat 4 is attached via a sliding rail (not shown) on the upper side.

Threaded rods 5 and 6 are rotatably provided on opposite sides of the base frames 1 and 2 along their longitudinal directions, respectively. The surfaces of the threaded rods 5 and 6 are threaded over their entire length. The threaded rods 5, 6 are provided with sliding pieces 7, 8 which are screwed together and slide in the axial direction as the threaded rods 5, 6 rotate.

A bevel gear (not shown) is attached to one end of each of the threaded rods 5, 6, and a bevel gear (not shown) is attached to both ends of a connecting rod 9, which is arranged to span the two base frames 1, 2. The bevel gear and the bevel gears of the threaded rods 5 and 6 are configured to mesh and interlock with each other. The rotation of each of the threaded rods 5 and 6 is controlled by a drive motor 10 as a drive means, which is fixed to the base frame 1 and connected to the rod 9.

The sliding pieces 7, 8 are fixed to a seat cushion 4a attached to the base frames 1, 2 via rails (not shown), and the cushion 4a,
In other words, the entire front seat 4 is movable in the longitudinal direction of the vehicle. The drive motor 10
has a built-in sensor that allows it to determine its own rotational speed, that is, the distance traveled by the front seat 4.

A support plate 12 is attached to the base frame 1 along the longitudinal direction of the threaded rod 5, and a limit switch 13 for regulating the movement of the sliding pieces 7 and 8 is attached to the support plate 12. .

The seat back 15a of the rear seat 15 is provided with a body pressure sensor 16 as a pressure sensor for detecting the presence or absence of a seated person.
6. Drive motor 10 and limit switch 13
are connected to the controller 17, respectively. Furthermore, an operation section 18 for controlling the amount of operation of the motor 10 is connected to the controller 17 .

The limit switch 13 is turned on when the sliding pieces 7 and 8 touch or approach the protruding piece 13a of the switch 13, and the controller 17 uses the signal from the limit switch 3 and the signal from the body pressure sensor 16. The movement of the drive motor 10 is regulated.

This restricts the front and back movement of the front seat 4 at the boundary line 2 as the setting position shown in FIG.
This is carried out as appropriate in an area 21 rearward from 0 (hereinafter referred to as "rear area"). Here, the boundary line 20 refers to this line 2 when the front seat 4 moves rearward.
0 is a line that does not come into contact with the person seated on the rear seat 15 and still provides a certain amount of leg space.

In the power seat control device configured as described above, when the position of the seat 4 is selected using the operation unit 18, the controller 17 reacts to control the drive motor 10.
Rotate by a predetermined number of revolutions. As a result, the threaded rods 5 and 6 rotate to move the sliding pieces 7 and 8 by a predetermined distance, thereby freely adjusting the position of the seat 4.

When a person sits on the rear seat 15, the body pressure sensor 16 senses this and sends a signal to the controller 17. Upon receiving this signal, the controller 17 drives the drive motor 10 based on the operation signal from the operation unit 18, but the front seat 4 is in the front area 2.
2 attempts to cross the boundary line 20 and enter the rear area 21, the limit switch 13 detects this and sends the signal to the controller 17. Combined with the signal from the body pressure sensor 16, the controller 17 immediately activates the drive motor 10. to stop.

Further, when a person is seated on the rear seat 15 with the front seat 4 intruding into the rear area 21, the body pressure sensor 16 that senses this sends a signal to the controller 17, and the controller 17 uses the sensor built in the drive motor 10. The current position of the front seat 4 is confirmed. Alternatively, the controller 17 is made to always recognize the current position of the front seat 4. Then, the controller 17 confirms that the front seat 4 is within the rear area 21 and drives the drive motor 10 to move the seat 4 to the boundary line 20.

The operation of this controller 17 will be explained according to a flowchart as shown in FIG. First, the body pressure sensor 16 determines whether or not it has detected the presence of a person seated on the rear seat 15 (step 101). If not, the entire front area 22 and rear area 21 of the front seat 4 A normal operation is performed to ensure the sliding amount within the area (step 102).

When the body pressure sensor 16 detects the presence of a seated person, the current position of the front seat 4 is checked using the sensor built into the drive motor 10 (step
103), it is determined whether the front seat 4 is within the rear area 21 (step 104). If the front seat 4 is within the rear area 21, the drive motor 10 is driven to move the front seat 4 to the boundary line 20.
(step 105), and perform normal operation within the front area 22 (step 106). Next, it is determined whether the front seat 4 has crossed the boundary line 20 from the front area 22 side (step
107).

In step 104, the front seat 4
is not within the rear area 21, the process advances to step 107.

In step 107, if the front seat 4 crosses the boundary line 20 from the front area 22 side, the drive motor 10 is immediately stopped by signals from the body pressure sensor 16 and the limit switch 13 to prevent it from entering the rear area. (Step 108). If the front seat 4 does not cross the boundary line 20, normal driving is performed within the front area (step 109).

Then go back to the start.

As described above, the front seat 4 is automatically restricted from moving rearward beyond the boundary line 20 due to the presence of a person sitting on the rear seat 15.
This eliminates erroneous operation due to carelessness, maintains the safety of rear seat occupants, and ensures sufficient leg space.

In this embodiment, the description has been made based on an example in which only the drive motor 10 for adjusting the position of the seat cushion 4a is provided as the drive means for the front seat. Even when a drive motor for adjustment is provided, the same functions and effects as described above can be obtained. In this case, the seat cushion 4a
There are a plurality of patterns in which the boundary line 20 is exceeded depending on the combination of the moving distance and the inclination angle of the seat back 4b, and all of these patterns are programmed into the controller 17.

<<Effects of the invention>> In the vehicle power seat control device of the present invention, the pressure sensor detects the presence of a person sitting on the rear seat, and if the pressure sensor does not detect the presence of a person sitting on the rear seat, the controller detects the presence of a person sitting on the rear seat. In response to the signal from the pressure sensor, the driving means is operated normally within the entire area of the front area and the rear area, and the front seat is slid and controlled so that the front seat can be set to the desired position of the person sitting in the front seat. As a result, compared to the case where the sliding amount of the front seat sliding mechanism is simply restricted from the standpoint of protecting the rear seat occupant, the sliding amount can be set to be larger, and the height of the front seat occupant is wider. You can select the front seat position that suits your weight, preferences, etc.

Additionally, when the pressure sensor detects the presence of a person sitting on the rear seat, the controller receives the signal from the pressure sensor and operates the drive means so that the front seat does not move backward beyond the set position. As a result, the front seat is automatically prevented from moving backwards beyond the set value due to the presence of a person sitting in the rear seat, eliminating erroneous operations due to carelessness, ensuring the safety of rear seat occupants, and ensuring sufficient safety. You can secure sufficient leg space.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall configuration of a power seat control device for a vehicle according to the present invention, FIG. 2 is a schematic side view showing a front seat and a rear seat according to the present invention, and FIG. 3 is a flowchart showing the operation of the controller. It is. 4...front seat, 4a...seat cushion, 4b...seat back, 10...drive motor, 15...rear seat, 16...body pressure sensor,
17... Controller.

Claims (1)

[Scope of utility model registration request] A driving means for adjusting the position of the seat cushion of the front seat and the inclination angle of the seat back; a pressure sensor provided on the rear seat for detecting the presence of a person sitting on the rear seat; When the presence of a person is not confirmed, normal operation is performed to ensure a sliding amount within the entire front area and rear area of the front seat, and when the pressure sensor confirms the presence of a person, the front seat is set. A power seat control device for a vehicle, comprising: a controller that controls the drive means so as not to move backward beyond a position.