JP2007145278A - Seat sliding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for sliding a seat by an electric equipment capable of arbitrarily varying a movement speed to a front/rear side of the seat by applying strength of operation force to an operation lever in a movement riding instrument (for example, automobile). <P>SOLUTION: A torque sensor 11 is installed on a distal end of an operation lever 12 set on the seat 13 on which a driver sits, by operating the operation lever forwardly or backwardly, the force is applied to the torque sensor, the number of rotations of a motor 15 of a seat sliding device can be freely changed by a signal from the torque sensor 11 and the variable state of the speed of seat slide can be arbitrarily obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seat slide device capable of adjusting the position of a seat by moving a seat of a moving passenger device in a front-rear direction relative to a seat-side rail via a motor drive unit.

  Although there are many types of seat slide devices, there is one shown in FIG. 11 as an example, and an ON-OFF signal is given to the motor by a switch installed at the lower part of the seat, and the seat is moved back and forth by sliding of the drive unit. .

  A rail 4 integrated with a seat is combined with a rail 3 on the vehicle body side installed on the floor 1 of the automobile body so as to be movable back and forth. A drive unit 5 for moving the rail 4 on the seat 13 side back and forth by a motor (not shown in FIG. 11) exists in the gap between the rails 3 and 4.

  The drive unit 5 is screwed to the screw member 9 rotatably supported by the rail 4 on the seat side, and is rotatably fitted to the screw member 9, and is mounted on the rail 3 on the vehicle body side so that it cannot move back and forth and cannot rotate. And a nut member 10. The nut member 10 is fixed to the rail 3.

  In FIG. 11, a worm gear 7 coming out of the gear case 6 to drive the seat slide unit 4 a rotates the screw member rotating gear 8, so that the driving unit 5 is further moved relative to the fixed nut member 10, and further the driving unit 5. The seat 13 attached to is moved back and forth. FIG. 12 shows a state where the seat 13 has moved forward. The change of the movement distance L in the figure is the difference between the contents of FIG. 11 and FIG. 12, and the driving unit 5 such as the seat 13 comes out of the rail 3 by L. FIG. 13 is a cross-sectional view of the seat slide unit 4a of FIG. 11, and the rail 4 integral with the seat is installed on the rail 3 on the vehicle body side so as to be slidable via a bearing.

Further, Patent Document 1 (a seat slide device that achieves both manual operation and electric operation) allows not only electric sheet movement but also manual movement of the seat back and forth arbitrarily.
Japanese Patent Laid-Open No. 2005-22475

  However, in the driving by the conventional seat slide device, the range of the operator who can move the seat is recognizable (because it is difficult to adjust to an appropriate position if the speed is fast, and it takes too much time if the speed is slow), that is, halfway speed For this reason, both of them have a problem that neither the instantaneous movement nor the delicate position adjustment can be satisfied.

  Further, in Patent Document 1, as a countermeasure for the rapid movement that is a weak point of the seat slide device, a configuration in which the coupling between the drive unit and the rail unit is interrupted by a clutch is adopted, but the configuration is complicated, and At the time of manual operation, there has been a problem that the sheet moves rapidly when the clutch is disengaged.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a seat slide device that quickly and definitely arrives at an optimum seat position by changing the speed of sheet movement with a single operation lever. And

  In order to solve the above-described conventional problems, the seat slide device of the present invention has a torque sensor (operating force detection sensor) connected to a switch unit for instructing driving by a motor for moving the seat, and the strength of the operating force is reduced. Is confirmed by a torque sensor, and the rotational speed of the motor is changed through a control circuit to change the moving speed of the sheet.

  As a result, the driver can move the driver's seat to the optimum position in a short time before starting driving.

  The seat slide device according to the present invention is capable of moving quickly and finely setting the seat position for ensuring the safety of the driver.

  According to the first invention, the seat can be moved back and forth and adjusted by the operator's free will, such that a large movement is a large operating force on the lever and a slight adjustment is a small operating force on the lever. It can be used as a countermeasure against sudden movements that are problems with electric seats and the difficulty of fine adjustment.

  In the second invention, the passenger sitting on the rear seat from the rear seat does not release the seat lock of all the seats with the foot lever, but the foot lever with the built-in torque sensor attached to all the seats is set to an arbitrary pedaling force. By increasing the speed of movement of the electric seat in the front seat by operating the control, it is possible to obtain a sense of security that moderate speed is possible rather than excessive movement.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, this invention is not limited by this Example.

Example 1
FIG. 1 shows a transverse sectional view of a seat slide device according to a first embodiment of the present invention. The vertical view has already been described with reference to FIG. 11 as an example of the conventional method, and the same reference numerals are given to those having the same function, and the description thereof is incorporated.

  In FIG. 1, an operation lever 12 is attached to the side of the seat 13, and a torque sensor (a magnetostrictive sensor in this example) 11 is set at the tip of the operation lever 12. From the torque sensor 11, a lead wire 24 is connected to a control board 16 provided along with the motor 15.

  FIG. 2 is a perspective cross-sectional view of the mounting relationship between the operation lever 12 and the torque sensor 11 as viewed obliquely. The operation lever side terminal 20 extending from the tip of the slide lever 12 includes two shafts 17 of the torque sensor 11. The torque sensor side terminal 21 is fitted and installed in a gear state.

  FIG. 3 is a perspective view of the torque sensor, and FIG. 4 is an exploded perspective view for explaining that the detection coil 19 covers the periphery of the amorphous magnetostrictive sensor 18 attached to the shaft 17 of the torque sensor 11. . FIG. 6 is a principle diagram showing how the amorphous magnetostrictive sensor 18 is attached to the shaft 17 and how the detection coil 19 is covered with the amorphous magnetostrictive sensor 18.

  The relationship between the torque and the generated voltage is directly proportional as shown in FIG. 7, and using this as a signal, the relationship between the lever operation and the motor speed can be set as shown in FIG. 7 and 8, when the operating lever 12 is moved forward or backward, torque is generated in accordance with the operating force. If the generated torque is large, the generated voltage increases, and as a result, the motor speed increases. It will be.

  The operation and action of the seat slide device configured as described above will be described below.

  In FIG. 2, when the operation lever 12 attached to the side of the seat 13 is moved, for example, in the forward direction (right direction in the figure), the state shown in FIG. When the operation lever side terminal 20 presses the torque sensor side terminal 21 of the shaft 17 of the torque sensor 11, the shaft 17 shown in FIG. A voltage as shown in FIG. 7 is generated by the amorphous magnetostrictive sensor 18 and the detection coil 19 installed on the shaft 17, and the number of revolutions of the motor shown in FIG. 8 is converted by sending a signal to the control board in FIG. . In FIG. 8, when the operating lever 12 is still pushed forward, the generated torque becomes larger and the rotational speed of the motor also increases. When the operation lever 12 is pushed rearward (FIG. 5C), it works on the minus side in FIG. 8, and the motor also moves in the reverse direction. In this case as well, if a strong operating force is applied, the motor rotational speed increases in the opposite direction.

  As described above, in this embodiment, by moving the operating lever installed on the seat, the rotational speed of the motor is made variable according to the operating force, and the moving speed in the front-rear direction of the seat is arbitrarily changed. It can be made to.

(Example 2)
9 and 10 are configuration diagrams in the horizontal and vertical directions of the seat slide device according to the second embodiment of the present invention. By pressing the operation pedal 22 installed in the lower rear part of the front seat, a rotational force, that is, torque is applied to the operation pedal side torque sensor 23 connected to the operation pedal 22, and the rotational speed of the motor similar to that shown in FIG. Can be changed.

  In a two-door car, etc., the front seat can be operated with the desired stepping force of the passenger in the rear seat. Will move. In this embodiment, since the operating force from the rear seat is a foot force, the degree of torque generation can be increased and the motor speed can be increased. It is also possible to make a difference in the moving speed of the seat when moving the passenger and when the passenger moves later.

  Since the seat slide device according to the present invention can change the speed of the drive unit by an arbitrary operation force of the user, if this is applied, the seat slide device according to the present invention can be used for sliding a seat in an aircraft / railway. It can also be applied to applications.

The operation part of a seat slide device in one example of the present invention, and a motor attachment related view The operation perspective view of the operation lever and the torque sensor in one embodiment of the present invention 1 is a conceptual perspective view of a torque sensor in one embodiment of the present invention. 1 is an exploded perspective view of a torque sensor according to an embodiment of the present invention. (A) is a positional relationship diagram with the torque sensor when the operation lever is operated in one embodiment of the present invention, (b) is a positional relationship diagram with the torque sensor when the operation lever is operated, and (c) is an operation lever operation. Of positional relationship with torque sensor Principle diagram of torque sensor in one embodiment of the present invention The torque-generated voltage correlation diagram of the torque sensor in one embodiment of the present invention FIG. 3 is a correlation diagram of the amount of movement when the operating lever is operated and the motor rotational speed in one embodiment of the present invention Seat slide device lateral view and longitudinal sectional view in another embodiment of the present invention The operation part of the seat slide apparatus and motor attachment related figure in other Example of this invention Cross-sectional view of a conventional seat slide device drive unit State change diagram when moving the conventional seat forward Conventional seat slide device rail longitudinal section

Explanation of symbols

4a Seat slide unit 5 Drive unit 11 Torque sensor 12 Operation lever 15 Motor 17 Shaft 18 Amorphous magnetostrictive sensor 20 Operation lever side terminal 21 Torque sensor side terminal 22 Operation pedal 23 Operation pedal side torque sensor

Claims (2)

A rail unit composed of a rail fixed to the main body side of the passenger equipment for movement, and a rail fixed to a seat that is slidable on the rail fixed to the main body side and relatively movable in the front-rear direction; A switch unit interlocked with a torque sensor provided in the vicinity of the seat which can be operated by a passenger on the seat side surface or the seat, and a rail fixed to the seat via a drive unit with a signal from the torque sensor The seat slide device which can change the speed at the time of the seat movement which can slide along the rail fixed to the main body side and can adjust the front-rear direction. Passengers sitting on the rear seats can move the front seats while sitting on the rear seats by operating the stepper pedal-shaped switch connected to the rail unit or the torque sensor attached to the seat. The seat slide device according to claim 1.