JPH0710944Y2 - Power seat positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a power seat positioning device.

<Prior Art> A vehicle seat, especially a driver's seat, is
It is equipped with a slide adjuster that can be moved forward and backward to ensure an optimal posture according to your preferences. This slide adjuster is generally configured to be manually operated. Further, a drive device for moving the seat back and forth through a gear system by a drive motor and a positioning device for setting the position of the seat are provided, and the seat is automatically moved to a preset position by a switch operation. There is a power sheet.

Here, the power sheet developed previously will be described.

As shown in FIG. 2, in this power seat 1, a bracket 4 (one is attached to the rear end of the upper rails 3 and 3 slidably arranged on the lower rails 2 and 2 arranged in parallel on the floor surface of the vehicle. Both sides of the rear end of the seat 5 are supported via (only the side is shown). On the other hand, both sides of the front end of the seat 5 are rotatably supported by both ends of the upper shaft of the swing arm 7 whose upper portion is rotatable in the front-rear direction. And the main switch 9
Is operated to rotate a drive motor (not shown) of the drive device housed in the seat 5, and this rotational force is fixed to the swing arm 7 via a gear system (not shown). 8 and the swing arm 7 is rotated forward or backward to move the seat 5 forward or backward.

A sheet positioning device 10 is disposed on one side (outer side) of the sheet 5 as illustrated. The positioning device 10 includes a guide plate 11, a guide bar 12, a lever 13, an adjusting memory knob 14, and a position detecting sensor such as a limit switch 15.

The guide plate 11 has a lower rail 2 as shown in FIG.
It has a substantially elongated rectangular shape slightly shorter than the lower rail 2 and is arranged below the lower rail 2 and fixed to the bottom surface of the lower rail 2. At both front and rear ends on one side (outer side) of the guide plate 11, there are provided support portions 11a, 11b which are vertically erected vertically to the plate surface and whose tips are bent substantially outward to form an inverted L shape. It is integrally formed and the other end (inside)
As shown in FIG. 4, a stopper 11c is integrally formed at the rear end of the plate so as to stand substantially perpendicular to the plate surface. These supports
11a, 11b and the stopper 11c are set higher than the upper rail 3.

The guide bar 12 has a round bar shape and is arranged in parallel to the lower rail 2 and has both ends thereof at the front and rear support portions of the guide plate 11.
It is placed and fixed on 11a and 11b. Therefore, the guide bar 12 is located outside the upper rail 3 and at a position higher than the upper rail 2. On the lower side of the peripheral surface of the guide bar 12, a large number of V grooves 12a are formed at a predetermined interval (pitch) so as to be orthogonal to the axial direction as shown in FIG.

As shown in FIG. 3, one end 13a of the lever 13 is L at a substantially right angle.
The upper end 3c is bent upward in a letter shape, the other end 13b is folded back in a substantially U shape, and is further bent vertically in an L shape so as to extend higher than the upper rail 3 and the tip 13c thereof faces rearward and the stopper 1 is formed.
It is formed so as to face the upper end of 1c. And this tip
13c is used as a positioning stopper (hereinafter referred to as the tip 1
3c is called a stopper). An adjust memory knob 14 is attached to one end 13a of the lever 13.

As shown in FIG. 5, the adjusting memory knob 14 has a substantially T-shape in a side view, a shaft hole 14c is horizontally formed in an upper portion 14a, and a central portion 14b is provided with a vertical hole 14d communicating with the shaft hole 14c. Has been drilled. And this adjust memory knob 14
Is penetrated through the guide bar 12 through the shaft hole 14c and is slidable in the axial direction of the guide bar 12. On the other hand, vertical hole 14d
A hard ball 17 is fitted in the spring 16 via a spring 16.
The rigid ball 17 is pressed against the lower surface of the peripheral surface of the guide bar 12 by the spring force of the spring 16, and rolls or slides when the adjusting memory knob 14 slides on the guide bar 12 to cause the respective V grooves 12 to move.
It can be sequentially engaged with a. These guide bars 12
The V groove 12a, the spring 16, and the hard sphere 17 constitute a moderating mechanism of the adjust memory knob 14.

One end 13a of the lever 13 is fixed to the lower end of the central portion 14b of the adjust memory knob 14, and the central portion of the lever 13 has the guide plate 1
The other end 13b which crosses under 1 and has a substantially U shape is slidably fitted on the other side of the guide plate 11. That is, the lever 13 has one end 13a on the adjust memory knob 14 and the other end 13b.
Is supported by the other side of the guide plate 11 and is movable in the front-rear direction integrally with the adjust memory knob 14.

The limit switch 15 is disposed on the upper surface and the rear end of the upper rail 3, and the actuator 15a is provided on the upper rail 3
Tip 13c of lever 13 when moving forward or backward
Alternatively, it can be engaged with the tip of the stopper 11c at the rear end of the guide plate 11, and is pressed by these to be switched off. The limit switch 15 is connected to the drive device of the power seat 1 via a harness 19. The main switch 9 arranged on the seat 5 is also connected to the drive device.

The operation will be described below.

The passenger sits on the seat 5 and grasps the adjustment memory knob 14 to move it along the guide bar 12 to a predetermined position. At this time, the hard spheres 17 sequentially enter and leave the V groove 12a of the guide bar 12,
A sense of moderation is imparted. Then, the adjust memory knob 14 is stopped at the desired seat stop position, and the hard sphere 17 is engaged with the V groove 12a at or near that position. As a result, the adjustment memory knob 14 is reliably positioned and locked at the seat stop position.

Next, when the passenger turns on the main switch 9 (Fig. 2) to the "forward" position, the motor of the drive device rotates forward to rotate the swing arm 7 forward, causing the upper rail 3 to slide forward. The seat 5 is moved forward. The limit switch 15 moves together with the upper rail 3, and when the operator 15a comes into contact with the stopper 13c of the lever 13, the limit switch 15 is turned off. The drive device receives the signal from the limit switch 15 and stops the motor. As a result, the seat 5 stops at the position set by the adjusting memory knob 14.

Further, when moving the seat 5 rearward from the set stop position, the passenger does not have to move the main switch 9 (second
When the drawing) is put in the "reverse" position, the motor of the drive device rotates in the reverse direction to rotate the swing arm 7 rearward, and the upper rail 3 slides rearward to move the seat 5 rearward. The limit switch 15 moves together with the upper rail 3 and is turned off when the actuator 15a comes into contact with the stopper 11c at the rear end of the guide plate 11. The drive device receives the signal from the limit switch 15 to stop the motor, and stops the seat 5 at that position. As a result, the seat 5 is retracted to the maximum retracted position of the upper rail 3.
In this way, the sheet 5 is positioned.

<Problems to be Solved by the Invention> In the power seat 1 described above, the seat 5 cannot be moved forward of the position set by the adjust memory knob 14. Therefore, for example, when another person temporarily rents the car of an individual owner, when adjusting the position of the seat 5 according to the physique of the other person, the position of the adjust memory knob 14 must be changed, and When returning to the owner, it is troublesome that the position of the adjust memory knob 14 must be returned to a position suitable for the physique of the owner. In such a case, it is desirable that the position of the seat 5 can be arbitrarily changed without changing the set position of the adjustment memory knob 14, that is, the position of the positioning stopper 13c. 2 if you can do this
It is convenient and convenient to move the seat 5 forward without operating the adjust memory knob 14 when entering or leaving the rear seat of the door car.

In view of the above demands, the present invention provides a power seat positioning device that can move a seat forward of the stopper position without adjusting (changing) the stopper position for positioning.

<Means for Solving the Problems> In the configuration of the present invention for solving the above problems, the seat is attached to the upper rail that slides on the lower rail, and the upper rail slides when the drive device drives and the seat moves in the front-back direction. A power seat positioning device that moves to a lower position, which includes a forward limit stopper disposed near the front end position of the lower rail, a backward limit stopper disposed near the rear end position of the lower rail, and a forward limit stopper located at a position along the lower rail. And a retreat limit stopper, which is provided for the positioning so that it can be moved arbitrarily, and the upper rail is provided with. And the position of this backward limit stopper is detected by contacting and colliding with the backward limit stopper when the vehicle moves backward. First
And a second sensor that is provided on the upper rail and that detects the position of the positioning stopper by contacting and colliding with the positioning stopper when the upper rail slides. To do.

<Embodiment> An embodiment of the present invention will be described in detail below with reference to the drawings.
The same parts as those in the conventional technique are designated by the same reference numerals.

FIG. 1 is a perspective view showing an embodiment of the present invention. As shown in the figure, an upper rail 3 is slidably arranged on a lower rail 2 fixed to a floor surface of a vehicle, and a rear end of a seat is attached to a rear end of the upper rail 3. Guide plate 11
Is fixed to the lower rail 2 and its supporting portions 11A, 11
B supports the guide bar 12. The adjust memory knob 14 slides along the guide bar 12, and the lever 13 is fixed to the memory knob 14.

In this embodiment, the guide plate 11 is provided with a backward limit stopper 11C.
Also, a forward limit stopper 11D is formed, and a lever 13 is formed with a positioning stopper 13B. These stoppers 1
1C, 11D, 13B are located side by side along the lower rail 2,
The stopper 13B is higher than the stoppers 11C and 11D in the vertical direction (vertical direction), and the stoppers 11C and 11D are closer to the lower rail 2 (upper rail 3) in the horizontal direction (width direction), and the stopper 13B is closer to the lower rail 2 (upper rail 3). is seperated.

Further, not only the limit switch 15 but also the micro switch 20 is provided on the upper rail 3. in this case,
When the upper rail 3 slides in the front-rear direction, the operator 15a of the limit switch 15 can contact and collide with the stopper 11C and the stopper 11D, but contact the stopper 13B because it is horizontally separated from the stopper 13B.・ There is no collision. Further, when the upper rail 3 slides, the actuator 20a of the micro switch 20 can contact and collide with the stopper 13B, but even if it moves forward, it does not contact or collide with the stopper 11D simply by passing above the stopper 11D. Absent. Limit switch 15 has actuator 15a with stopper 1
When it contacts or collides with 1C and 11D, it is open (OFF), and it is closed (ON) at other times. Also a micro switch
When the actuator 20a comes into contact with or collides with the stopper 13B, 20 is in the open state (OFF) and is in the closed state (ON) at other times. The drive unit housed in the seat 5 is a main switch 9,
The drive motor is controlled as follows according to the states of the limit switch 15 and the micro switch 20.

(B) When the main switch 9 is turned to the "forward" position while both the limit switch 15 and the micro switch 20 are in the ON state. At this time, the drive motor is normally rotated to move the seat 5 and the upper rail 3 forward.

(B) When the main switch 9 is turned to the "reverse" position while the limit switch 15 and the micro switch 20 are both in the ON state. At this time, the drive motor is reversely rotated to move the seat 5 and the upper rail 3 backward.

(C) When the limit switch 15 or the micro switch 20 changes from the ON state to the OFF state while the drive motor is rotationally driven, the drive motor is stopped.

(D) When the main switch 9 is turned to the “forward” position while the micro switch 20 is in the OFF state, the stopped drive motor is rotated in the normal direction, and the seat 5 and the upper rail 3 are moved forward.

(E) If the main switch 9 is turned to the "reverse" position while the micro switch 20 is in the OFF state, the drive motor that has been stopped is rotated in the reverse direction, and the seat 5 and the upper rail 3 are retracted.

(F) When the main switch 9 is turned to the "forward" position while the limit switch 15 is in the OFF state due to the actuator 15a coming into contact with and colliding with the reverse limit stopper 11C. At this time, the stopped motor is rotated in the normal direction to move the seat 5 and the upper rail 3 forward. In addition, even if the main switch 9 is turned to the "reverse" position while the limit switch 15 is in the OFF state in the above state, the motor is kept stopped.

(G) When the main switch 9 is turned to the "reverse" position while the limit switch 15 is in the OFF state due to the actuator 15a coming into contact with and colliding with the forward limit stopper 11D. At this time, the stopped motor is reversely rotated to move the seat 5 and the upper rail 3 backward. In addition, even if the main switch 9 is turned to the "advanced" position while the limit switch 15 is in the OFF state in the above state, the motor is kept stopped.

The limit switch 15 and the micro switch 20 are ordinary commercial products, and the actuators 15a and 20a tilt obliquely when an external force is applied, and return to the neutral position by a spring force when the external force is released. That is, in the limit switch 15, the actuator 15a
Is contacted and collides with the reverse limit stopper 11C and tilts, the first O
In the FF state, the actuator 15a contacts the forward limit stopper 11D.
The second OFF state occurs when the vehicle collides and leans in the direction opposite to the above state, and the second state becomes the ON state when the operator 15a separates from the stoppers 11C and 11D and returns to the neutral state. Further, in the micro switch 20, when the actuator 20a contacts and collides with the positioning stopper 13B and tilts, it becomes an OFF state, and when the actuator 20a leaves the stopper 13B and returns to the neutral position, it becomes an ON state. After sliding the upper rail 3 and causing the actuator 20a of the microswitch 20 to contact / collide with the stopper 13B and tilt,
When the upper rail 3 is further slid in the same direction, the actuator 20a slides over the stopper 13B while slantingly inclining, and upon completion of the ride, the actuator 20a returns to the neutral position by the spring force, and the micro switch 20 returns to the ON state.

On the other hand, the buzzer 21 is built in the cushion of the seat.

Limit switch 15, micro switch 20, buzzer 21
Is connected to the drive device for the power seat via a harness. The main switch (similar to that in FIG. 2) is also connected to the drive.

The operation will be described below.

The passenger is seated on the seat and operates the adjustment memory knob 14 to set the stopper 13B at a position that suits one's physique and taste.

Next, when the main switch is turned to the "forward" position, the motor of the drive device rotates in the normal direction and the seat moves forward. When the actuator 20a of the micro switch 20 contacts and collides with the stopper 13B and the micro switch 20 is turned off, the motor stops. Thus, the seat is an adjust memory knob
Stop at the position set in 14.

In the above state, that is, when the seat is at the setting position of the adjustment memory knob 14, when the main switch is turned to the "forward" position again, the drive motor is rotated in the forward direction again, and the seat is adjusted by the adjustment memory knob 14. Go forward beyond the set position. Then "stop" the main switch
The drive motor is stopped at the point where is set to, and the advance of the seat ends. If the main switch is left in the "closed" position, the seat will move to the forward limit position and the actuator 15a of the limit switch 15 will contact / collide with the stopper 11D and the limit switch
15 is turned off.

When the limit switch 15 is turned off in this way, the drive motor is stopped, and the sheet stops at the forward limit position.

When the main switch is turned to the "reverse" position, the drive motor of the drive device reverses and the seat moves backward. When the seat is moving backward, the buzzer 21 sounds and an alarm is issued. When the sheet moves backward from the forward limit position, the actuator 20a of the microswitch 20 comes into contact with and collides with the stopper 13B, at which point the drive motor stops and the sheet stops. At this time, if the closing position of the main switch is kept at the "reverse" position, the drive motor continues to rotate in the reverse direction and the seat moves backward. When the seat moves backward, the actuator 15a of the limit switch 15 comes into contact with and collides with the stopper 11C, and the limit switch 15
When is turned off, the drive motor stops and the seat stops.

As described above, in this embodiment, the seat can be moved to the front of the position of the stopper 13B set by the adjustment memory knob 14.

<Advantages of the Invention> As described in detail with the embodiments above, according to the present invention, the seat can be automatically positioned and the seat can be moved to a position other than the set position.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention, FIG. 2 is a perspective view of a main part of a conventional power seat positioning device, FIG. 3 is an enlarged perspective view of the positioning device of FIG. 2, and FIG. 3 is an enlarged perspective view of a main part of FIG. 3, and FIG. 5 is a sectional view of the adjustment memory knob shown in FIG. In the drawings, 1 is a power seat, 2 is a lower rail, 3 is an upper rail, 5 is a seat, 7 is a swing arm, 9 is a main switch, 10 is a positioning device, 11 is a guide plate, 12 is a guide bar, 13 is a lever, 14 Adjust memory knob, 15
Is a limit switch, 16 is a spring, 17 is a hard ball, 11C,
11D and 13B are stoppers.

Claims (1)

[Scope of utility model registration request] 1. A power seat positioning device in which a seat is attached to an upper rail that slides on a lower rail, and the upper rail slides when the driving device drives to move the seat in the front-rear direction, the front end of the lower rail. Position of the forward limit stopper, the rear end stopper of the lower rail near the rear end of the lower rail, and a position along the lower rail so that the movable end can be moved freely between the forward limit stopper and the backward limit stopper. It is equipped with a positioning stopper and the upper rail, which contacts and collides with the forward limit stopper when it moves forward, and detects the position of this forward limit stopper, and when it moves backward, it contacts the backward limit stopper. The first to detect the position of this backward limit stopper upon collision
And a second sensor that is provided on the upper rail and that detects the position of the positioning stopper by contacting and colliding with the positioning stopper when the upper rail slides. Power seat positioning device.